Removed godep dependency.
Golang community are discuting a vendor aproach to go dependencies. This change will come as experimental in go 1.5. For now I am removing the godep dependency manager and using a vendor aproach. I still have to use the full path when importing dependencies, but when go1.5 released I just have to rename the imports and use a -vendor prefix when building the project.
This commit is contained in:
claudemiro
+9
@@ -0,0 +1,9 @@
|
||||
language: go
|
||||
|
||||
go:
|
||||
- 1.0
|
||||
- 1.1
|
||||
- 1.2
|
||||
- 1.3
|
||||
- 1.4
|
||||
- tip
|
||||
+27
@@ -0,0 +1,27 @@
|
||||
Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
+7
@@ -0,0 +1,7 @@
|
||||
context
|
||||
=======
|
||||
[](https://travis-ci.org/gorilla/context)
|
||||
|
||||
gorilla/context is a general purpose registry for global request variables.
|
||||
|
||||
Read the full documentation here: http://www.gorillatoolkit.org/pkg/context
|
||||
+143
@@ -0,0 +1,143 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package context
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
var (
|
||||
mutex sync.RWMutex
|
||||
data = make(map[*http.Request]map[interface{}]interface{})
|
||||
datat = make(map[*http.Request]int64)
|
||||
)
|
||||
|
||||
// Set stores a value for a given key in a given request.
|
||||
func Set(r *http.Request, key, val interface{}) {
|
||||
mutex.Lock()
|
||||
if data[r] == nil {
|
||||
data[r] = make(map[interface{}]interface{})
|
||||
datat[r] = time.Now().Unix()
|
||||
}
|
||||
data[r][key] = val
|
||||
mutex.Unlock()
|
||||
}
|
||||
|
||||
// Get returns a value stored for a given key in a given request.
|
||||
func Get(r *http.Request, key interface{}) interface{} {
|
||||
mutex.RLock()
|
||||
if ctx := data[r]; ctx != nil {
|
||||
value := ctx[key]
|
||||
mutex.RUnlock()
|
||||
return value
|
||||
}
|
||||
mutex.RUnlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
// GetOk returns stored value and presence state like multi-value return of map access.
|
||||
func GetOk(r *http.Request, key interface{}) (interface{}, bool) {
|
||||
mutex.RLock()
|
||||
if _, ok := data[r]; ok {
|
||||
value, ok := data[r][key]
|
||||
mutex.RUnlock()
|
||||
return value, ok
|
||||
}
|
||||
mutex.RUnlock()
|
||||
return nil, false
|
||||
}
|
||||
|
||||
// GetAll returns all stored values for the request as a map. Nil is returned for invalid requests.
|
||||
func GetAll(r *http.Request) map[interface{}]interface{} {
|
||||
mutex.RLock()
|
||||
if context, ok := data[r]; ok {
|
||||
result := make(map[interface{}]interface{}, len(context))
|
||||
for k, v := range context {
|
||||
result[k] = v
|
||||
}
|
||||
mutex.RUnlock()
|
||||
return result
|
||||
}
|
||||
mutex.RUnlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
// GetAllOk returns all stored values for the request as a map and a boolean value that indicates if
|
||||
// the request was registered.
|
||||
func GetAllOk(r *http.Request) (map[interface{}]interface{}, bool) {
|
||||
mutex.RLock()
|
||||
context, ok := data[r]
|
||||
result := make(map[interface{}]interface{}, len(context))
|
||||
for k, v := range context {
|
||||
result[k] = v
|
||||
}
|
||||
mutex.RUnlock()
|
||||
return result, ok
|
||||
}
|
||||
|
||||
// Delete removes a value stored for a given key in a given request.
|
||||
func Delete(r *http.Request, key interface{}) {
|
||||
mutex.Lock()
|
||||
if data[r] != nil {
|
||||
delete(data[r], key)
|
||||
}
|
||||
mutex.Unlock()
|
||||
}
|
||||
|
||||
// Clear removes all values stored for a given request.
|
||||
//
|
||||
// This is usually called by a handler wrapper to clean up request
|
||||
// variables at the end of a request lifetime. See ClearHandler().
|
||||
func Clear(r *http.Request) {
|
||||
mutex.Lock()
|
||||
clear(r)
|
||||
mutex.Unlock()
|
||||
}
|
||||
|
||||
// clear is Clear without the lock.
|
||||
func clear(r *http.Request) {
|
||||
delete(data, r)
|
||||
delete(datat, r)
|
||||
}
|
||||
|
||||
// Purge removes request data stored for longer than maxAge, in seconds.
|
||||
// It returns the amount of requests removed.
|
||||
//
|
||||
// If maxAge <= 0, all request data is removed.
|
||||
//
|
||||
// This is only used for sanity check: in case context cleaning was not
|
||||
// properly set some request data can be kept forever, consuming an increasing
|
||||
// amount of memory. In case this is detected, Purge() must be called
|
||||
// periodically until the problem is fixed.
|
||||
func Purge(maxAge int) int {
|
||||
mutex.Lock()
|
||||
count := 0
|
||||
if maxAge <= 0 {
|
||||
count = len(data)
|
||||
data = make(map[*http.Request]map[interface{}]interface{})
|
||||
datat = make(map[*http.Request]int64)
|
||||
} else {
|
||||
min := time.Now().Unix() - int64(maxAge)
|
||||
for r := range data {
|
||||
if datat[r] < min {
|
||||
clear(r)
|
||||
count++
|
||||
}
|
||||
}
|
||||
}
|
||||
mutex.Unlock()
|
||||
return count
|
||||
}
|
||||
|
||||
// ClearHandler wraps an http.Handler and clears request values at the end
|
||||
// of a request lifetime.
|
||||
func ClearHandler(h http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
defer Clear(r)
|
||||
h.ServeHTTP(w, r)
|
||||
})
|
||||
}
|
||||
+161
@@ -0,0 +1,161 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package context
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"testing"
|
||||
)
|
||||
|
||||
type keyType int
|
||||
|
||||
const (
|
||||
key1 keyType = iota
|
||||
key2
|
||||
)
|
||||
|
||||
func TestContext(t *testing.T) {
|
||||
assertEqual := func(val interface{}, exp interface{}) {
|
||||
if val != exp {
|
||||
t.Errorf("Expected %v, got %v.", exp, val)
|
||||
}
|
||||
}
|
||||
|
||||
r, _ := http.NewRequest("GET", "http://localhost:8080/", nil)
|
||||
emptyR, _ := http.NewRequest("GET", "http://localhost:8080/", nil)
|
||||
|
||||
// Get()
|
||||
assertEqual(Get(r, key1), nil)
|
||||
|
||||
// Set()
|
||||
Set(r, key1, "1")
|
||||
assertEqual(Get(r, key1), "1")
|
||||
assertEqual(len(data[r]), 1)
|
||||
|
||||
Set(r, key2, "2")
|
||||
assertEqual(Get(r, key2), "2")
|
||||
assertEqual(len(data[r]), 2)
|
||||
|
||||
//GetOk
|
||||
value, ok := GetOk(r, key1)
|
||||
assertEqual(value, "1")
|
||||
assertEqual(ok, true)
|
||||
|
||||
value, ok = GetOk(r, "not exists")
|
||||
assertEqual(value, nil)
|
||||
assertEqual(ok, false)
|
||||
|
||||
Set(r, "nil value", nil)
|
||||
value, ok = GetOk(r, "nil value")
|
||||
assertEqual(value, nil)
|
||||
assertEqual(ok, true)
|
||||
|
||||
// GetAll()
|
||||
values := GetAll(r)
|
||||
assertEqual(len(values), 3)
|
||||
|
||||
// GetAll() for empty request
|
||||
values = GetAll(emptyR)
|
||||
if values != nil {
|
||||
t.Error("GetAll didn't return nil value for invalid request")
|
||||
}
|
||||
|
||||
// GetAllOk()
|
||||
values, ok = GetAllOk(r)
|
||||
assertEqual(len(values), 3)
|
||||
assertEqual(ok, true)
|
||||
|
||||
// GetAllOk() for empty request
|
||||
values, ok = GetAllOk(emptyR)
|
||||
assertEqual(value, nil)
|
||||
assertEqual(ok, false)
|
||||
|
||||
// Delete()
|
||||
Delete(r, key1)
|
||||
assertEqual(Get(r, key1), nil)
|
||||
assertEqual(len(data[r]), 2)
|
||||
|
||||
Delete(r, key2)
|
||||
assertEqual(Get(r, key2), nil)
|
||||
assertEqual(len(data[r]), 1)
|
||||
|
||||
// Clear()
|
||||
Clear(r)
|
||||
assertEqual(len(data), 0)
|
||||
}
|
||||
|
||||
func parallelReader(r *http.Request, key string, iterations int, wait, done chan struct{}) {
|
||||
<-wait
|
||||
for i := 0; i < iterations; i++ {
|
||||
Get(r, key)
|
||||
}
|
||||
done <- struct{}{}
|
||||
|
||||
}
|
||||
|
||||
func parallelWriter(r *http.Request, key, value string, iterations int, wait, done chan struct{}) {
|
||||
<-wait
|
||||
for i := 0; i < iterations; i++ {
|
||||
Set(r, key, value)
|
||||
}
|
||||
done <- struct{}{}
|
||||
|
||||
}
|
||||
|
||||
func benchmarkMutex(b *testing.B, numReaders, numWriters, iterations int) {
|
||||
|
||||
b.StopTimer()
|
||||
r, _ := http.NewRequest("GET", "http://localhost:8080/", nil)
|
||||
done := make(chan struct{})
|
||||
b.StartTimer()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
wait := make(chan struct{})
|
||||
|
||||
for i := 0; i < numReaders; i++ {
|
||||
go parallelReader(r, "test", iterations, wait, done)
|
||||
}
|
||||
|
||||
for i := 0; i < numWriters; i++ {
|
||||
go parallelWriter(r, "test", "123", iterations, wait, done)
|
||||
}
|
||||
|
||||
close(wait)
|
||||
|
||||
for i := 0; i < numReaders+numWriters; i++ {
|
||||
<-done
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func BenchmarkMutexSameReadWrite1(b *testing.B) {
|
||||
benchmarkMutex(b, 1, 1, 32)
|
||||
}
|
||||
func BenchmarkMutexSameReadWrite2(b *testing.B) {
|
||||
benchmarkMutex(b, 2, 2, 32)
|
||||
}
|
||||
func BenchmarkMutexSameReadWrite4(b *testing.B) {
|
||||
benchmarkMutex(b, 4, 4, 32)
|
||||
}
|
||||
func BenchmarkMutex1(b *testing.B) {
|
||||
benchmarkMutex(b, 2, 8, 32)
|
||||
}
|
||||
func BenchmarkMutex2(b *testing.B) {
|
||||
benchmarkMutex(b, 16, 4, 64)
|
||||
}
|
||||
func BenchmarkMutex3(b *testing.B) {
|
||||
benchmarkMutex(b, 1, 2, 128)
|
||||
}
|
||||
func BenchmarkMutex4(b *testing.B) {
|
||||
benchmarkMutex(b, 128, 32, 256)
|
||||
}
|
||||
func BenchmarkMutex5(b *testing.B) {
|
||||
benchmarkMutex(b, 1024, 2048, 64)
|
||||
}
|
||||
func BenchmarkMutex6(b *testing.B) {
|
||||
benchmarkMutex(b, 2048, 1024, 512)
|
||||
}
|
||||
+82
@@ -0,0 +1,82 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
/*
|
||||
Package context stores values shared during a request lifetime.
|
||||
|
||||
For example, a router can set variables extracted from the URL and later
|
||||
application handlers can access those values, or it can be used to store
|
||||
sessions values to be saved at the end of a request. There are several
|
||||
others common uses.
|
||||
|
||||
The idea was posted by Brad Fitzpatrick to the go-nuts mailing list:
|
||||
|
||||
http://groups.google.com/group/golang-nuts/msg/e2d679d303aa5d53
|
||||
|
||||
Here's the basic usage: first define the keys that you will need. The key
|
||||
type is interface{} so a key can be of any type that supports equality.
|
||||
Here we define a key using a custom int type to avoid name collisions:
|
||||
|
||||
package foo
|
||||
|
||||
import (
|
||||
"github.com/gorilla/context"
|
||||
)
|
||||
|
||||
type key int
|
||||
|
||||
const MyKey key = 0
|
||||
|
||||
Then set a variable. Variables are bound to an http.Request object, so you
|
||||
need a request instance to set a value:
|
||||
|
||||
context.Set(r, MyKey, "bar")
|
||||
|
||||
The application can later access the variable using the same key you provided:
|
||||
|
||||
func MyHandler(w http.ResponseWriter, r *http.Request) {
|
||||
// val is "bar".
|
||||
val := context.Get(r, foo.MyKey)
|
||||
|
||||
// returns ("bar", true)
|
||||
val, ok := context.GetOk(r, foo.MyKey)
|
||||
// ...
|
||||
}
|
||||
|
||||
And that's all about the basic usage. We discuss some other ideas below.
|
||||
|
||||
Any type can be stored in the context. To enforce a given type, make the key
|
||||
private and wrap Get() and Set() to accept and return values of a specific
|
||||
type:
|
||||
|
||||
type key int
|
||||
|
||||
const mykey key = 0
|
||||
|
||||
// GetMyKey returns a value for this package from the request values.
|
||||
func GetMyKey(r *http.Request) SomeType {
|
||||
if rv := context.Get(r, mykey); rv != nil {
|
||||
return rv.(SomeType)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// SetMyKey sets a value for this package in the request values.
|
||||
func SetMyKey(r *http.Request, val SomeType) {
|
||||
context.Set(r, mykey, val)
|
||||
}
|
||||
|
||||
Variables must be cleared at the end of a request, to remove all values
|
||||
that were stored. This can be done in an http.Handler, after a request was
|
||||
served. Just call Clear() passing the request:
|
||||
|
||||
context.Clear(r)
|
||||
|
||||
...or use ClearHandler(), which conveniently wraps an http.Handler to clear
|
||||
variables at the end of a request lifetime.
|
||||
|
||||
The Routers from the packages gorilla/mux and gorilla/pat call Clear()
|
||||
so if you are using either of them you don't need to clear the context manually.
|
||||
*/
|
||||
package context
|
||||
+7
@@ -0,0 +1,7 @@
|
||||
language: go
|
||||
|
||||
go:
|
||||
- 1.0
|
||||
- 1.1
|
||||
- 1.2
|
||||
- tip
|
||||
+27
@@ -0,0 +1,27 @@
|
||||
Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
+7
@@ -0,0 +1,7 @@
|
||||
mux
|
||||
===
|
||||
[](https://travis-ci.org/gorilla/mux)
|
||||
|
||||
gorilla/mux is a powerful URL router and dispatcher.
|
||||
|
||||
Read the full documentation here: http://www.gorillatoolkit.org/pkg/mux
|
||||
+21
@@ -0,0 +1,21 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func BenchmarkMux(b *testing.B) {
|
||||
router := new(Router)
|
||||
handler := func(w http.ResponseWriter, r *http.Request) {}
|
||||
router.HandleFunc("/v1/{v1}", handler)
|
||||
|
||||
request, _ := http.NewRequest("GET", "/v1/anything", nil)
|
||||
for i := 0; i < b.N; i++ {
|
||||
router.ServeHTTP(nil, request)
|
||||
}
|
||||
}
|
||||
+199
@@ -0,0 +1,199 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
/*
|
||||
Package gorilla/mux implements a request router and dispatcher.
|
||||
|
||||
The name mux stands for "HTTP request multiplexer". Like the standard
|
||||
http.ServeMux, mux.Router matches incoming requests against a list of
|
||||
registered routes and calls a handler for the route that matches the URL
|
||||
or other conditions. The main features are:
|
||||
|
||||
* Requests can be matched based on URL host, path, path prefix, schemes,
|
||||
header and query values, HTTP methods or using custom matchers.
|
||||
* URL hosts and paths can have variables with an optional regular
|
||||
expression.
|
||||
* Registered URLs can be built, or "reversed", which helps maintaining
|
||||
references to resources.
|
||||
* Routes can be used as subrouters: nested routes are only tested if the
|
||||
parent route matches. This is useful to define groups of routes that
|
||||
share common conditions like a host, a path prefix or other repeated
|
||||
attributes. As a bonus, this optimizes request matching.
|
||||
* It implements the http.Handler interface so it is compatible with the
|
||||
standard http.ServeMux.
|
||||
|
||||
Let's start registering a couple of URL paths and handlers:
|
||||
|
||||
func main() {
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/", HomeHandler)
|
||||
r.HandleFunc("/products", ProductsHandler)
|
||||
r.HandleFunc("/articles", ArticlesHandler)
|
||||
http.Handle("/", r)
|
||||
}
|
||||
|
||||
Here we register three routes mapping URL paths to handlers. This is
|
||||
equivalent to how http.HandleFunc() works: if an incoming request URL matches
|
||||
one of the paths, the corresponding handler is called passing
|
||||
(http.ResponseWriter, *http.Request) as parameters.
|
||||
|
||||
Paths can have variables. They are defined using the format {name} or
|
||||
{name:pattern}. If a regular expression pattern is not defined, the matched
|
||||
variable will be anything until the next slash. For example:
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/products/{key}", ProductHandler)
|
||||
r.HandleFunc("/articles/{category}/", ArticlesCategoryHandler)
|
||||
r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler)
|
||||
|
||||
The names are used to create a map of route variables which can be retrieved
|
||||
calling mux.Vars():
|
||||
|
||||
vars := mux.Vars(request)
|
||||
category := vars["category"]
|
||||
|
||||
And this is all you need to know about the basic usage. More advanced options
|
||||
are explained below.
|
||||
|
||||
Routes can also be restricted to a domain or subdomain. Just define a host
|
||||
pattern to be matched. They can also have variables:
|
||||
|
||||
r := mux.NewRouter()
|
||||
// Only matches if domain is "www.domain.com".
|
||||
r.Host("www.domain.com")
|
||||
// Matches a dynamic subdomain.
|
||||
r.Host("{subdomain:[a-z]+}.domain.com")
|
||||
|
||||
There are several other matchers that can be added. To match path prefixes:
|
||||
|
||||
r.PathPrefix("/products/")
|
||||
|
||||
...or HTTP methods:
|
||||
|
||||
r.Methods("GET", "POST")
|
||||
|
||||
...or URL schemes:
|
||||
|
||||
r.Schemes("https")
|
||||
|
||||
...or header values:
|
||||
|
||||
r.Headers("X-Requested-With", "XMLHttpRequest")
|
||||
|
||||
...or query values:
|
||||
|
||||
r.Queries("key", "value")
|
||||
|
||||
...or to use a custom matcher function:
|
||||
|
||||
r.MatcherFunc(func(r *http.Request, rm *RouteMatch) bool {
|
||||
return r.ProtoMajor == 0
|
||||
})
|
||||
|
||||
...and finally, it is possible to combine several matchers in a single route:
|
||||
|
||||
r.HandleFunc("/products", ProductsHandler).
|
||||
Host("www.domain.com").
|
||||
Methods("GET").
|
||||
Schemes("http")
|
||||
|
||||
Setting the same matching conditions again and again can be boring, so we have
|
||||
a way to group several routes that share the same requirements.
|
||||
We call it "subrouting".
|
||||
|
||||
For example, let's say we have several URLs that should only match when the
|
||||
host is "www.domain.com". Create a route for that host and get a "subrouter"
|
||||
from it:
|
||||
|
||||
r := mux.NewRouter()
|
||||
s := r.Host("www.domain.com").Subrouter()
|
||||
|
||||
Then register routes in the subrouter:
|
||||
|
||||
s.HandleFunc("/products/", ProductsHandler)
|
||||
s.HandleFunc("/products/{key}", ProductHandler)
|
||||
s.HandleFunc("/articles/{category}/{id:[0-9]+}"), ArticleHandler)
|
||||
|
||||
The three URL paths we registered above will only be tested if the domain is
|
||||
"www.domain.com", because the subrouter is tested first. This is not
|
||||
only convenient, but also optimizes request matching. You can create
|
||||
subrouters combining any attribute matchers accepted by a route.
|
||||
|
||||
Subrouters can be used to create domain or path "namespaces": you define
|
||||
subrouters in a central place and then parts of the app can register its
|
||||
paths relatively to a given subrouter.
|
||||
|
||||
There's one more thing about subroutes. When a subrouter has a path prefix,
|
||||
the inner routes use it as base for their paths:
|
||||
|
||||
r := mux.NewRouter()
|
||||
s := r.PathPrefix("/products").Subrouter()
|
||||
// "/products/"
|
||||
s.HandleFunc("/", ProductsHandler)
|
||||
// "/products/{key}/"
|
||||
s.HandleFunc("/{key}/", ProductHandler)
|
||||
// "/products/{key}/details"
|
||||
s.HandleFunc("/{key}/details", ProductDetailsHandler)
|
||||
|
||||
Now let's see how to build registered URLs.
|
||||
|
||||
Routes can be named. All routes that define a name can have their URLs built,
|
||||
or "reversed". We define a name calling Name() on a route. For example:
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
To build a URL, get the route and call the URL() method, passing a sequence of
|
||||
key/value pairs for the route variables. For the previous route, we would do:
|
||||
|
||||
url, err := r.Get("article").URL("category", "technology", "id", "42")
|
||||
|
||||
...and the result will be a url.URL with the following path:
|
||||
|
||||
"/articles/technology/42"
|
||||
|
||||
This also works for host variables:
|
||||
|
||||
r := mux.NewRouter()
|
||||
r.Host("{subdomain}.domain.com").
|
||||
Path("/articles/{category}/{id:[0-9]+}").
|
||||
HandlerFunc(ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
// url.String() will be "http://news.domain.com/articles/technology/42"
|
||||
url, err := r.Get("article").URL("subdomain", "news",
|
||||
"category", "technology",
|
||||
"id", "42")
|
||||
|
||||
All variables defined in the route are required, and their values must
|
||||
conform to the corresponding patterns. These requirements guarantee that a
|
||||
generated URL will always match a registered route -- the only exception is
|
||||
for explicitly defined "build-only" routes which never match.
|
||||
|
||||
There's also a way to build only the URL host or path for a route:
|
||||
use the methods URLHost() or URLPath() instead. For the previous route,
|
||||
we would do:
|
||||
|
||||
// "http://news.domain.com/"
|
||||
host, err := r.Get("article").URLHost("subdomain", "news")
|
||||
|
||||
// "/articles/technology/42"
|
||||
path, err := r.Get("article").URLPath("category", "technology", "id", "42")
|
||||
|
||||
And if you use subrouters, host and path defined separately can be built
|
||||
as well:
|
||||
|
||||
r := mux.NewRouter()
|
||||
s := r.Host("{subdomain}.domain.com").Subrouter()
|
||||
s.Path("/articles/{category}/{id:[0-9]+}").
|
||||
HandlerFunc(ArticleHandler).
|
||||
Name("article")
|
||||
|
||||
// "http://news.domain.com/articles/technology/42"
|
||||
url, err := r.Get("article").URL("subdomain", "news",
|
||||
"category", "technology",
|
||||
"id", "42")
|
||||
*/
|
||||
package mux
|
||||
+366
@@ -0,0 +1,366 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net/http"
|
||||
"path"
|
||||
|
||||
"github.com/gorilla/context"
|
||||
)
|
||||
|
||||
// NewRouter returns a new router instance.
|
||||
func NewRouter() *Router {
|
||||
return &Router{namedRoutes: make(map[string]*Route), KeepContext: false}
|
||||
}
|
||||
|
||||
// Router registers routes to be matched and dispatches a handler.
|
||||
//
|
||||
// It implements the http.Handler interface, so it can be registered to serve
|
||||
// requests:
|
||||
//
|
||||
// var router = mux.NewRouter()
|
||||
//
|
||||
// func main() {
|
||||
// http.Handle("/", router)
|
||||
// }
|
||||
//
|
||||
// Or, for Google App Engine, register it in a init() function:
|
||||
//
|
||||
// func init() {
|
||||
// http.Handle("/", router)
|
||||
// }
|
||||
//
|
||||
// This will send all incoming requests to the router.
|
||||
type Router struct {
|
||||
// Configurable Handler to be used when no route matches.
|
||||
NotFoundHandler http.Handler
|
||||
// Parent route, if this is a subrouter.
|
||||
parent parentRoute
|
||||
// Routes to be matched, in order.
|
||||
routes []*Route
|
||||
// Routes by name for URL building.
|
||||
namedRoutes map[string]*Route
|
||||
// See Router.StrictSlash(). This defines the flag for new routes.
|
||||
strictSlash bool
|
||||
// If true, do not clear the request context after handling the request
|
||||
KeepContext bool
|
||||
}
|
||||
|
||||
// Match matches registered routes against the request.
|
||||
func (r *Router) Match(req *http.Request, match *RouteMatch) bool {
|
||||
for _, route := range r.routes {
|
||||
if route.Match(req, match) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// ServeHTTP dispatches the handler registered in the matched route.
|
||||
//
|
||||
// When there is a match, the route variables can be retrieved calling
|
||||
// mux.Vars(request).
|
||||
func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
|
||||
// Clean path to canonical form and redirect.
|
||||
if p := cleanPath(req.URL.Path); p != req.URL.Path {
|
||||
|
||||
// Added 3 lines (Philip Schlump) - It was droping the query string and #whatever from query.
|
||||
// This matches with fix in go 1.2 r.c. 4 for same problem. Go Issue:
|
||||
// http://code.google.com/p/go/issues/detail?id=5252
|
||||
url := *req.URL
|
||||
url.Path = p
|
||||
p = url.String()
|
||||
|
||||
w.Header().Set("Location", p)
|
||||
w.WriteHeader(http.StatusMovedPermanently)
|
||||
return
|
||||
}
|
||||
var match RouteMatch
|
||||
var handler http.Handler
|
||||
if r.Match(req, &match) {
|
||||
handler = match.Handler
|
||||
setVars(req, match.Vars)
|
||||
setCurrentRoute(req, match.Route)
|
||||
}
|
||||
if handler == nil {
|
||||
handler = r.NotFoundHandler
|
||||
if handler == nil {
|
||||
handler = http.NotFoundHandler()
|
||||
}
|
||||
}
|
||||
if !r.KeepContext {
|
||||
defer context.Clear(req)
|
||||
}
|
||||
handler.ServeHTTP(w, req)
|
||||
}
|
||||
|
||||
// Get returns a route registered with the given name.
|
||||
func (r *Router) Get(name string) *Route {
|
||||
return r.getNamedRoutes()[name]
|
||||
}
|
||||
|
||||
// GetRoute returns a route registered with the given name. This method
|
||||
// was renamed to Get() and remains here for backwards compatibility.
|
||||
func (r *Router) GetRoute(name string) *Route {
|
||||
return r.getNamedRoutes()[name]
|
||||
}
|
||||
|
||||
// StrictSlash defines the trailing slash behavior for new routes. The initial
|
||||
// value is false.
|
||||
//
|
||||
// When true, if the route path is "/path/", accessing "/path" will redirect
|
||||
// to the former and vice versa. In other words, your application will always
|
||||
// see the path as specified in the route.
|
||||
//
|
||||
// When false, if the route path is "/path", accessing "/path/" will not match
|
||||
// this route and vice versa.
|
||||
//
|
||||
// Special case: when a route sets a path prefix using the PathPrefix() method,
|
||||
// strict slash is ignored for that route because the redirect behavior can't
|
||||
// be determined from a prefix alone. However, any subrouters created from that
|
||||
// route inherit the original StrictSlash setting.
|
||||
func (r *Router) StrictSlash(value bool) *Router {
|
||||
r.strictSlash = value
|
||||
return r
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// parentRoute
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// getNamedRoutes returns the map where named routes are registered.
|
||||
func (r *Router) getNamedRoutes() map[string]*Route {
|
||||
if r.namedRoutes == nil {
|
||||
if r.parent != nil {
|
||||
r.namedRoutes = r.parent.getNamedRoutes()
|
||||
} else {
|
||||
r.namedRoutes = make(map[string]*Route)
|
||||
}
|
||||
}
|
||||
return r.namedRoutes
|
||||
}
|
||||
|
||||
// getRegexpGroup returns regexp definitions from the parent route, if any.
|
||||
func (r *Router) getRegexpGroup() *routeRegexpGroup {
|
||||
if r.parent != nil {
|
||||
return r.parent.getRegexpGroup()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *Router) buildVars(m map[string]string) map[string]string {
|
||||
if r.parent != nil {
|
||||
m = r.parent.buildVars(m)
|
||||
}
|
||||
return m
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Route factories
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// NewRoute registers an empty route.
|
||||
func (r *Router) NewRoute() *Route {
|
||||
route := &Route{parent: r, strictSlash: r.strictSlash}
|
||||
r.routes = append(r.routes, route)
|
||||
return route
|
||||
}
|
||||
|
||||
// Handle registers a new route with a matcher for the URL path.
|
||||
// See Route.Path() and Route.Handler().
|
||||
func (r *Router) Handle(path string, handler http.Handler) *Route {
|
||||
return r.NewRoute().Path(path).Handler(handler)
|
||||
}
|
||||
|
||||
// HandleFunc registers a new route with a matcher for the URL path.
|
||||
// See Route.Path() and Route.HandlerFunc().
|
||||
func (r *Router) HandleFunc(path string, f func(http.ResponseWriter,
|
||||
*http.Request)) *Route {
|
||||
return r.NewRoute().Path(path).HandlerFunc(f)
|
||||
}
|
||||
|
||||
// Headers registers a new route with a matcher for request header values.
|
||||
// See Route.Headers().
|
||||
func (r *Router) Headers(pairs ...string) *Route {
|
||||
return r.NewRoute().Headers(pairs...)
|
||||
}
|
||||
|
||||
// Host registers a new route with a matcher for the URL host.
|
||||
// See Route.Host().
|
||||
func (r *Router) Host(tpl string) *Route {
|
||||
return r.NewRoute().Host(tpl)
|
||||
}
|
||||
|
||||
// MatcherFunc registers a new route with a custom matcher function.
|
||||
// See Route.MatcherFunc().
|
||||
func (r *Router) MatcherFunc(f MatcherFunc) *Route {
|
||||
return r.NewRoute().MatcherFunc(f)
|
||||
}
|
||||
|
||||
// Methods registers a new route with a matcher for HTTP methods.
|
||||
// See Route.Methods().
|
||||
func (r *Router) Methods(methods ...string) *Route {
|
||||
return r.NewRoute().Methods(methods...)
|
||||
}
|
||||
|
||||
// Path registers a new route with a matcher for the URL path.
|
||||
// See Route.Path().
|
||||
func (r *Router) Path(tpl string) *Route {
|
||||
return r.NewRoute().Path(tpl)
|
||||
}
|
||||
|
||||
// PathPrefix registers a new route with a matcher for the URL path prefix.
|
||||
// See Route.PathPrefix().
|
||||
func (r *Router) PathPrefix(tpl string) *Route {
|
||||
return r.NewRoute().PathPrefix(tpl)
|
||||
}
|
||||
|
||||
// Queries registers a new route with a matcher for URL query values.
|
||||
// See Route.Queries().
|
||||
func (r *Router) Queries(pairs ...string) *Route {
|
||||
return r.NewRoute().Queries(pairs...)
|
||||
}
|
||||
|
||||
// Schemes registers a new route with a matcher for URL schemes.
|
||||
// See Route.Schemes().
|
||||
func (r *Router) Schemes(schemes ...string) *Route {
|
||||
return r.NewRoute().Schemes(schemes...)
|
||||
}
|
||||
|
||||
// BuildVars registers a new route with a custom function for modifying
|
||||
// route variables before building a URL.
|
||||
func (r *Router) BuildVarsFunc(f BuildVarsFunc) *Route {
|
||||
return r.NewRoute().BuildVarsFunc(f)
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Context
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// RouteMatch stores information about a matched route.
|
||||
type RouteMatch struct {
|
||||
Route *Route
|
||||
Handler http.Handler
|
||||
Vars map[string]string
|
||||
}
|
||||
|
||||
type contextKey int
|
||||
|
||||
const (
|
||||
varsKey contextKey = iota
|
||||
routeKey
|
||||
)
|
||||
|
||||
// Vars returns the route variables for the current request, if any.
|
||||
func Vars(r *http.Request) map[string]string {
|
||||
if rv := context.Get(r, varsKey); rv != nil {
|
||||
return rv.(map[string]string)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// CurrentRoute returns the matched route for the current request, if any.
|
||||
func CurrentRoute(r *http.Request) *Route {
|
||||
if rv := context.Get(r, routeKey); rv != nil {
|
||||
return rv.(*Route)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func setVars(r *http.Request, val interface{}) {
|
||||
context.Set(r, varsKey, val)
|
||||
}
|
||||
|
||||
func setCurrentRoute(r *http.Request, val interface{}) {
|
||||
context.Set(r, routeKey, val)
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Helpers
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// cleanPath returns the canonical path for p, eliminating . and .. elements.
|
||||
// Borrowed from the net/http package.
|
||||
func cleanPath(p string) string {
|
||||
if p == "" {
|
||||
return "/"
|
||||
}
|
||||
if p[0] != '/' {
|
||||
p = "/" + p
|
||||
}
|
||||
np := path.Clean(p)
|
||||
// path.Clean removes trailing slash except for root;
|
||||
// put the trailing slash back if necessary.
|
||||
if p[len(p)-1] == '/' && np != "/" {
|
||||
np += "/"
|
||||
}
|
||||
return np
|
||||
}
|
||||
|
||||
// uniqueVars returns an error if two slices contain duplicated strings.
|
||||
func uniqueVars(s1, s2 []string) error {
|
||||
for _, v1 := range s1 {
|
||||
for _, v2 := range s2 {
|
||||
if v1 == v2 {
|
||||
return fmt.Errorf("mux: duplicated route variable %q", v2)
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// mapFromPairs converts variadic string parameters to a string map.
|
||||
func mapFromPairs(pairs ...string) (map[string]string, error) {
|
||||
length := len(pairs)
|
||||
if length%2 != 0 {
|
||||
return nil, fmt.Errorf(
|
||||
"mux: number of parameters must be multiple of 2, got %v", pairs)
|
||||
}
|
||||
m := make(map[string]string, length/2)
|
||||
for i := 0; i < length; i += 2 {
|
||||
m[pairs[i]] = pairs[i+1]
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// matchInArray returns true if the given string value is in the array.
|
||||
func matchInArray(arr []string, value string) bool {
|
||||
for _, v := range arr {
|
||||
if v == value {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// matchMap returns true if the given key/value pairs exist in a given map.
|
||||
func matchMap(toCheck map[string]string, toMatch map[string][]string,
|
||||
canonicalKey bool) bool {
|
||||
for k, v := range toCheck {
|
||||
// Check if key exists.
|
||||
if canonicalKey {
|
||||
k = http.CanonicalHeaderKey(k)
|
||||
}
|
||||
if values := toMatch[k]; values == nil {
|
||||
return false
|
||||
} else if v != "" {
|
||||
// If value was defined as an empty string we only check that the
|
||||
// key exists. Otherwise we also check for equality.
|
||||
valueExists := false
|
||||
for _, value := range values {
|
||||
if v == value {
|
||||
valueExists = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !valueExists {
|
||||
return false
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
+1012
File diff suppressed because it is too large
Load Diff
+714
@@ -0,0 +1,714 @@
|
||||
// Old tests ported to Go1. This is a mess. Want to drop it one day.
|
||||
|
||||
// Copyright 2011 Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"net/http"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// ResponseRecorder
|
||||
// ----------------------------------------------------------------------------
|
||||
// Copyright 2009 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// ResponseRecorder is an implementation of http.ResponseWriter that
|
||||
// records its mutations for later inspection in tests.
|
||||
type ResponseRecorder struct {
|
||||
Code int // the HTTP response code from WriteHeader
|
||||
HeaderMap http.Header // the HTTP response headers
|
||||
Body *bytes.Buffer // if non-nil, the bytes.Buffer to append written data to
|
||||
Flushed bool
|
||||
}
|
||||
|
||||
// NewRecorder returns an initialized ResponseRecorder.
|
||||
func NewRecorder() *ResponseRecorder {
|
||||
return &ResponseRecorder{
|
||||
HeaderMap: make(http.Header),
|
||||
Body: new(bytes.Buffer),
|
||||
}
|
||||
}
|
||||
|
||||
// DefaultRemoteAddr is the default remote address to return in RemoteAddr if
|
||||
// an explicit DefaultRemoteAddr isn't set on ResponseRecorder.
|
||||
const DefaultRemoteAddr = "1.2.3.4"
|
||||
|
||||
// Header returns the response headers.
|
||||
func (rw *ResponseRecorder) Header() http.Header {
|
||||
return rw.HeaderMap
|
||||
}
|
||||
|
||||
// Write always succeeds and writes to rw.Body, if not nil.
|
||||
func (rw *ResponseRecorder) Write(buf []byte) (int, error) {
|
||||
if rw.Body != nil {
|
||||
rw.Body.Write(buf)
|
||||
}
|
||||
if rw.Code == 0 {
|
||||
rw.Code = http.StatusOK
|
||||
}
|
||||
return len(buf), nil
|
||||
}
|
||||
|
||||
// WriteHeader sets rw.Code.
|
||||
func (rw *ResponseRecorder) WriteHeader(code int) {
|
||||
rw.Code = code
|
||||
}
|
||||
|
||||
// Flush sets rw.Flushed to true.
|
||||
func (rw *ResponseRecorder) Flush() {
|
||||
rw.Flushed = true
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
func TestRouteMatchers(t *testing.T) {
|
||||
var scheme, host, path, query, method string
|
||||
var headers map[string]string
|
||||
var resultVars map[bool]map[string]string
|
||||
|
||||
router := NewRouter()
|
||||
router.NewRoute().Host("{var1}.google.com").
|
||||
Path("/{var2:[a-z]+}/{var3:[0-9]+}").
|
||||
Queries("foo", "bar").
|
||||
Methods("GET").
|
||||
Schemes("https").
|
||||
Headers("x-requested-with", "XMLHttpRequest")
|
||||
router.NewRoute().Host("www.{var4}.com").
|
||||
PathPrefix("/foo/{var5:[a-z]+}/{var6:[0-9]+}").
|
||||
Queries("baz", "ding").
|
||||
Methods("POST").
|
||||
Schemes("http").
|
||||
Headers("Content-Type", "application/json")
|
||||
|
||||
reset := func() {
|
||||
// Everything match.
|
||||
scheme = "https"
|
||||
host = "www.google.com"
|
||||
path = "/product/42"
|
||||
query = "?foo=bar"
|
||||
method = "GET"
|
||||
headers = map[string]string{"X-Requested-With": "XMLHttpRequest"}
|
||||
resultVars = map[bool]map[string]string{
|
||||
true: {"var1": "www", "var2": "product", "var3": "42"},
|
||||
false: {},
|
||||
}
|
||||
}
|
||||
|
||||
reset2 := func() {
|
||||
// Everything match.
|
||||
scheme = "http"
|
||||
host = "www.google.com"
|
||||
path = "/foo/product/42/path/that/is/ignored"
|
||||
query = "?baz=ding"
|
||||
method = "POST"
|
||||
headers = map[string]string{"Content-Type": "application/json"}
|
||||
resultVars = map[bool]map[string]string{
|
||||
true: {"var4": "google", "var5": "product", "var6": "42"},
|
||||
false: {},
|
||||
}
|
||||
}
|
||||
|
||||
match := func(shouldMatch bool) {
|
||||
url := scheme + "://" + host + path + query
|
||||
request, _ := http.NewRequest(method, url, nil)
|
||||
for key, value := range headers {
|
||||
request.Header.Add(key, value)
|
||||
}
|
||||
|
||||
var routeMatch RouteMatch
|
||||
matched := router.Match(request, &routeMatch)
|
||||
if matched != shouldMatch {
|
||||
// Need better messages. :)
|
||||
if matched {
|
||||
t.Errorf("Should match.")
|
||||
} else {
|
||||
t.Errorf("Should not match.")
|
||||
}
|
||||
}
|
||||
|
||||
if matched {
|
||||
currentRoute := routeMatch.Route
|
||||
if currentRoute == nil {
|
||||
t.Errorf("Expected a current route.")
|
||||
}
|
||||
vars := routeMatch.Vars
|
||||
expectedVars := resultVars[shouldMatch]
|
||||
if len(vars) != len(expectedVars) {
|
||||
t.Errorf("Expected vars: %v Got: %v.", expectedVars, vars)
|
||||
}
|
||||
for name, value := range vars {
|
||||
if expectedVars[name] != value {
|
||||
t.Errorf("Expected vars: %v Got: %v.", expectedVars, vars)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 1st route --------------------------------------------------------------
|
||||
|
||||
// Everything match.
|
||||
reset()
|
||||
match(true)
|
||||
|
||||
// Scheme doesn't match.
|
||||
reset()
|
||||
scheme = "http"
|
||||
match(false)
|
||||
|
||||
// Host doesn't match.
|
||||
reset()
|
||||
host = "www.mygoogle.com"
|
||||
match(false)
|
||||
|
||||
// Path doesn't match.
|
||||
reset()
|
||||
path = "/product/notdigits"
|
||||
match(false)
|
||||
|
||||
// Query doesn't match.
|
||||
reset()
|
||||
query = "?foo=baz"
|
||||
match(false)
|
||||
|
||||
// Method doesn't match.
|
||||
reset()
|
||||
method = "POST"
|
||||
match(false)
|
||||
|
||||
// Header doesn't match.
|
||||
reset()
|
||||
headers = map[string]string{}
|
||||
match(false)
|
||||
|
||||
// Everything match, again.
|
||||
reset()
|
||||
match(true)
|
||||
|
||||
// 2nd route --------------------------------------------------------------
|
||||
|
||||
// Everything match.
|
||||
reset2()
|
||||
match(true)
|
||||
|
||||
// Scheme doesn't match.
|
||||
reset2()
|
||||
scheme = "https"
|
||||
match(false)
|
||||
|
||||
// Host doesn't match.
|
||||
reset2()
|
||||
host = "sub.google.com"
|
||||
match(false)
|
||||
|
||||
// Path doesn't match.
|
||||
reset2()
|
||||
path = "/bar/product/42"
|
||||
match(false)
|
||||
|
||||
// Query doesn't match.
|
||||
reset2()
|
||||
query = "?foo=baz"
|
||||
match(false)
|
||||
|
||||
// Method doesn't match.
|
||||
reset2()
|
||||
method = "GET"
|
||||
match(false)
|
||||
|
||||
// Header doesn't match.
|
||||
reset2()
|
||||
headers = map[string]string{}
|
||||
match(false)
|
||||
|
||||
// Everything match, again.
|
||||
reset2()
|
||||
match(true)
|
||||
}
|
||||
|
||||
type headerMatcherTest struct {
|
||||
matcher headerMatcher
|
||||
headers map[string]string
|
||||
result bool
|
||||
}
|
||||
|
||||
var headerMatcherTests = []headerMatcherTest{
|
||||
{
|
||||
matcher: headerMatcher(map[string]string{"x-requested-with": "XMLHttpRequest"}),
|
||||
headers: map[string]string{"X-Requested-With": "XMLHttpRequest"},
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: headerMatcher(map[string]string{"x-requested-with": ""}),
|
||||
headers: map[string]string{"X-Requested-With": "anything"},
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: headerMatcher(map[string]string{"x-requested-with": "XMLHttpRequest"}),
|
||||
headers: map[string]string{},
|
||||
result: false,
|
||||
},
|
||||
}
|
||||
|
||||
type hostMatcherTest struct {
|
||||
matcher *Route
|
||||
url string
|
||||
vars map[string]string
|
||||
result bool
|
||||
}
|
||||
|
||||
var hostMatcherTests = []hostMatcherTest{
|
||||
{
|
||||
matcher: NewRouter().NewRoute().Host("{foo:[a-z][a-z][a-z]}.{bar:[a-z][a-z][a-z]}.{baz:[a-z][a-z][a-z]}"),
|
||||
url: "http://abc.def.ghi/",
|
||||
vars: map[string]string{"foo": "abc", "bar": "def", "baz": "ghi"},
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: NewRouter().NewRoute().Host("{foo:[a-z][a-z][a-z]}.{bar:[a-z][a-z][a-z]}.{baz:[a-z][a-z][a-z]}"),
|
||||
url: "http://a.b.c/",
|
||||
vars: map[string]string{"foo": "abc", "bar": "def", "baz": "ghi"},
|
||||
result: false,
|
||||
},
|
||||
}
|
||||
|
||||
type methodMatcherTest struct {
|
||||
matcher methodMatcher
|
||||
method string
|
||||
result bool
|
||||
}
|
||||
|
||||
var methodMatcherTests = []methodMatcherTest{
|
||||
{
|
||||
matcher: methodMatcher([]string{"GET", "POST", "PUT"}),
|
||||
method: "GET",
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: methodMatcher([]string{"GET", "POST", "PUT"}),
|
||||
method: "POST",
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: methodMatcher([]string{"GET", "POST", "PUT"}),
|
||||
method: "PUT",
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: methodMatcher([]string{"GET", "POST", "PUT"}),
|
||||
method: "DELETE",
|
||||
result: false,
|
||||
},
|
||||
}
|
||||
|
||||
type pathMatcherTest struct {
|
||||
matcher *Route
|
||||
url string
|
||||
vars map[string]string
|
||||
result bool
|
||||
}
|
||||
|
||||
var pathMatcherTests = []pathMatcherTest{
|
||||
{
|
||||
matcher: NewRouter().NewRoute().Path("/{foo:[0-9][0-9][0-9]}/{bar:[0-9][0-9][0-9]}/{baz:[0-9][0-9][0-9]}"),
|
||||
url: "http://localhost:8080/123/456/789",
|
||||
vars: map[string]string{"foo": "123", "bar": "456", "baz": "789"},
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: NewRouter().NewRoute().Path("/{foo:[0-9][0-9][0-9]}/{bar:[0-9][0-9][0-9]}/{baz:[0-9][0-9][0-9]}"),
|
||||
url: "http://localhost:8080/1/2/3",
|
||||
vars: map[string]string{"foo": "123", "bar": "456", "baz": "789"},
|
||||
result: false,
|
||||
},
|
||||
}
|
||||
|
||||
type schemeMatcherTest struct {
|
||||
matcher schemeMatcher
|
||||
url string
|
||||
result bool
|
||||
}
|
||||
|
||||
var schemeMatcherTests = []schemeMatcherTest{
|
||||
{
|
||||
matcher: schemeMatcher([]string{"http", "https"}),
|
||||
url: "http://localhost:8080/",
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: schemeMatcher([]string{"http", "https"}),
|
||||
url: "https://localhost:8080/",
|
||||
result: true,
|
||||
},
|
||||
{
|
||||
matcher: schemeMatcher([]string{"https"}),
|
||||
url: "http://localhost:8080/",
|
||||
result: false,
|
||||
},
|
||||
{
|
||||
matcher: schemeMatcher([]string{"http"}),
|
||||
url: "https://localhost:8080/",
|
||||
result: false,
|
||||
},
|
||||
}
|
||||
|
||||
type urlBuildingTest struct {
|
||||
route *Route
|
||||
vars []string
|
||||
url string
|
||||
}
|
||||
|
||||
var urlBuildingTests = []urlBuildingTest{
|
||||
{
|
||||
route: new(Route).Host("foo.domain.com"),
|
||||
vars: []string{},
|
||||
url: "http://foo.domain.com",
|
||||
},
|
||||
{
|
||||
route: new(Route).Host("{subdomain}.domain.com"),
|
||||
vars: []string{"subdomain", "bar"},
|
||||
url: "http://bar.domain.com",
|
||||
},
|
||||
{
|
||||
route: new(Route).Host("foo.domain.com").Path("/articles"),
|
||||
vars: []string{},
|
||||
url: "http://foo.domain.com/articles",
|
||||
},
|
||||
{
|
||||
route: new(Route).Path("/articles"),
|
||||
vars: []string{},
|
||||
url: "/articles",
|
||||
},
|
||||
{
|
||||
route: new(Route).Path("/articles/{category}/{id:[0-9]+}"),
|
||||
vars: []string{"category", "technology", "id", "42"},
|
||||
url: "/articles/technology/42",
|
||||
},
|
||||
{
|
||||
route: new(Route).Host("{subdomain}.domain.com").Path("/articles/{category}/{id:[0-9]+}"),
|
||||
vars: []string{"subdomain", "foo", "category", "technology", "id", "42"},
|
||||
url: "http://foo.domain.com/articles/technology/42",
|
||||
},
|
||||
}
|
||||
|
||||
func TestHeaderMatcher(t *testing.T) {
|
||||
for _, v := range headerMatcherTests {
|
||||
request, _ := http.NewRequest("GET", "http://localhost:8080/", nil)
|
||||
for key, value := range v.headers {
|
||||
request.Header.Add(key, value)
|
||||
}
|
||||
var routeMatch RouteMatch
|
||||
result := v.matcher.Match(request, &routeMatch)
|
||||
if result != v.result {
|
||||
if v.result {
|
||||
t.Errorf("%#v: should match %v.", v.matcher, request.Header)
|
||||
} else {
|
||||
t.Errorf("%#v: should not match %v.", v.matcher, request.Header)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestHostMatcher(t *testing.T) {
|
||||
for _, v := range hostMatcherTests {
|
||||
request, _ := http.NewRequest("GET", v.url, nil)
|
||||
var routeMatch RouteMatch
|
||||
result := v.matcher.Match(request, &routeMatch)
|
||||
vars := routeMatch.Vars
|
||||
if result != v.result {
|
||||
if v.result {
|
||||
t.Errorf("%#v: should match %v.", v.matcher, v.url)
|
||||
} else {
|
||||
t.Errorf("%#v: should not match %v.", v.matcher, v.url)
|
||||
}
|
||||
}
|
||||
if result {
|
||||
if len(vars) != len(v.vars) {
|
||||
t.Errorf("%#v: vars length should be %v, got %v.", v.matcher, len(v.vars), len(vars))
|
||||
}
|
||||
for name, value := range vars {
|
||||
if v.vars[name] != value {
|
||||
t.Errorf("%#v: expected value %v for key %v, got %v.", v.matcher, v.vars[name], name, value)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if len(vars) != 0 {
|
||||
t.Errorf("%#v: vars length should be 0, got %v.", v.matcher, len(vars))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestMethodMatcher(t *testing.T) {
|
||||
for _, v := range methodMatcherTests {
|
||||
request, _ := http.NewRequest(v.method, "http://localhost:8080/", nil)
|
||||
var routeMatch RouteMatch
|
||||
result := v.matcher.Match(request, &routeMatch)
|
||||
if result != v.result {
|
||||
if v.result {
|
||||
t.Errorf("%#v: should match %v.", v.matcher, v.method)
|
||||
} else {
|
||||
t.Errorf("%#v: should not match %v.", v.matcher, v.method)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestPathMatcher(t *testing.T) {
|
||||
for _, v := range pathMatcherTests {
|
||||
request, _ := http.NewRequest("GET", v.url, nil)
|
||||
var routeMatch RouteMatch
|
||||
result := v.matcher.Match(request, &routeMatch)
|
||||
vars := routeMatch.Vars
|
||||
if result != v.result {
|
||||
if v.result {
|
||||
t.Errorf("%#v: should match %v.", v.matcher, v.url)
|
||||
} else {
|
||||
t.Errorf("%#v: should not match %v.", v.matcher, v.url)
|
||||
}
|
||||
}
|
||||
if result {
|
||||
if len(vars) != len(v.vars) {
|
||||
t.Errorf("%#v: vars length should be %v, got %v.", v.matcher, len(v.vars), len(vars))
|
||||
}
|
||||
for name, value := range vars {
|
||||
if v.vars[name] != value {
|
||||
t.Errorf("%#v: expected value %v for key %v, got %v.", v.matcher, v.vars[name], name, value)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if len(vars) != 0 {
|
||||
t.Errorf("%#v: vars length should be 0, got %v.", v.matcher, len(vars))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestSchemeMatcher(t *testing.T) {
|
||||
for _, v := range schemeMatcherTests {
|
||||
request, _ := http.NewRequest("GET", v.url, nil)
|
||||
var routeMatch RouteMatch
|
||||
result := v.matcher.Match(request, &routeMatch)
|
||||
if result != v.result {
|
||||
if v.result {
|
||||
t.Errorf("%#v: should match %v.", v.matcher, v.url)
|
||||
} else {
|
||||
t.Errorf("%#v: should not match %v.", v.matcher, v.url)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestUrlBuilding(t *testing.T) {
|
||||
|
||||
for _, v := range urlBuildingTests {
|
||||
u, _ := v.route.URL(v.vars...)
|
||||
url := u.String()
|
||||
if url != v.url {
|
||||
t.Errorf("expected %v, got %v", v.url, url)
|
||||
/*
|
||||
reversePath := ""
|
||||
reverseHost := ""
|
||||
if v.route.pathTemplate != nil {
|
||||
reversePath = v.route.pathTemplate.Reverse
|
||||
}
|
||||
if v.route.hostTemplate != nil {
|
||||
reverseHost = v.route.hostTemplate.Reverse
|
||||
}
|
||||
|
||||
t.Errorf("%#v:\nexpected: %q\ngot: %q\nreverse path: %q\nreverse host: %q", v.route, v.url, url, reversePath, reverseHost)
|
||||
*/
|
||||
}
|
||||
}
|
||||
|
||||
ArticleHandler := func(w http.ResponseWriter, r *http.Request) {
|
||||
}
|
||||
|
||||
router := NewRouter()
|
||||
router.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).Name("article")
|
||||
|
||||
url, _ := router.Get("article").URL("category", "technology", "id", "42")
|
||||
expected := "/articles/technology/42"
|
||||
if url.String() != expected {
|
||||
t.Errorf("Expected %v, got %v", expected, url.String())
|
||||
}
|
||||
}
|
||||
|
||||
func TestMatchedRouteName(t *testing.T) {
|
||||
routeName := "stock"
|
||||
router := NewRouter()
|
||||
route := router.NewRoute().Path("/products/").Name(routeName)
|
||||
|
||||
url := "http://www.domain.com/products/"
|
||||
request, _ := http.NewRequest("GET", url, nil)
|
||||
var rv RouteMatch
|
||||
ok := router.Match(request, &rv)
|
||||
|
||||
if !ok || rv.Route != route {
|
||||
t.Errorf("Expected same route, got %+v.", rv.Route)
|
||||
}
|
||||
|
||||
retName := rv.Route.GetName()
|
||||
if retName != routeName {
|
||||
t.Errorf("Expected %q, got %q.", routeName, retName)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSubRouting(t *testing.T) {
|
||||
// Example from docs.
|
||||
router := NewRouter()
|
||||
subrouter := router.NewRoute().Host("www.domain.com").Subrouter()
|
||||
route := subrouter.NewRoute().Path("/products/").Name("products")
|
||||
|
||||
url := "http://www.domain.com/products/"
|
||||
request, _ := http.NewRequest("GET", url, nil)
|
||||
var rv RouteMatch
|
||||
ok := router.Match(request, &rv)
|
||||
|
||||
if !ok || rv.Route != route {
|
||||
t.Errorf("Expected same route, got %+v.", rv.Route)
|
||||
}
|
||||
|
||||
u, _ := router.Get("products").URL()
|
||||
builtUrl := u.String()
|
||||
// Yay, subroute aware of the domain when building!
|
||||
if builtUrl != url {
|
||||
t.Errorf("Expected %q, got %q.", url, builtUrl)
|
||||
}
|
||||
}
|
||||
|
||||
func TestVariableNames(t *testing.T) {
|
||||
route := new(Route).Host("{arg1}.domain.com").Path("/{arg1}/{arg2:[0-9]+}")
|
||||
if route.err == nil {
|
||||
t.Errorf("Expected error for duplicated variable names")
|
||||
}
|
||||
}
|
||||
|
||||
func TestRedirectSlash(t *testing.T) {
|
||||
var route *Route
|
||||
var routeMatch RouteMatch
|
||||
r := NewRouter()
|
||||
|
||||
r.StrictSlash(false)
|
||||
route = r.NewRoute()
|
||||
if route.strictSlash != false {
|
||||
t.Errorf("Expected false redirectSlash.")
|
||||
}
|
||||
|
||||
r.StrictSlash(true)
|
||||
route = r.NewRoute()
|
||||
if route.strictSlash != true {
|
||||
t.Errorf("Expected true redirectSlash.")
|
||||
}
|
||||
|
||||
route = new(Route)
|
||||
route.strictSlash = true
|
||||
route.Path("/{arg1}/{arg2:[0-9]+}/")
|
||||
request, _ := http.NewRequest("GET", "http://localhost/foo/123", nil)
|
||||
routeMatch = RouteMatch{}
|
||||
_ = route.Match(request, &routeMatch)
|
||||
vars := routeMatch.Vars
|
||||
if vars["arg1"] != "foo" {
|
||||
t.Errorf("Expected foo.")
|
||||
}
|
||||
if vars["arg2"] != "123" {
|
||||
t.Errorf("Expected 123.")
|
||||
}
|
||||
rsp := NewRecorder()
|
||||
routeMatch.Handler.ServeHTTP(rsp, request)
|
||||
if rsp.HeaderMap.Get("Location") != "http://localhost/foo/123/" {
|
||||
t.Errorf("Expected redirect header.")
|
||||
}
|
||||
|
||||
route = new(Route)
|
||||
route.strictSlash = true
|
||||
route.Path("/{arg1}/{arg2:[0-9]+}")
|
||||
request, _ = http.NewRequest("GET", "http://localhost/foo/123/", nil)
|
||||
routeMatch = RouteMatch{}
|
||||
_ = route.Match(request, &routeMatch)
|
||||
vars = routeMatch.Vars
|
||||
if vars["arg1"] != "foo" {
|
||||
t.Errorf("Expected foo.")
|
||||
}
|
||||
if vars["arg2"] != "123" {
|
||||
t.Errorf("Expected 123.")
|
||||
}
|
||||
rsp = NewRecorder()
|
||||
routeMatch.Handler.ServeHTTP(rsp, request)
|
||||
if rsp.HeaderMap.Get("Location") != "http://localhost/foo/123" {
|
||||
t.Errorf("Expected redirect header.")
|
||||
}
|
||||
}
|
||||
|
||||
// Test for the new regexp library, still not available in stable Go.
|
||||
func TestNewRegexp(t *testing.T) {
|
||||
var p *routeRegexp
|
||||
var matches []string
|
||||
|
||||
tests := map[string]map[string][]string{
|
||||
"/{foo:a{2}}": {
|
||||
"/a": nil,
|
||||
"/aa": {"aa"},
|
||||
"/aaa": nil,
|
||||
"/aaaa": nil,
|
||||
},
|
||||
"/{foo:a{2,}}": {
|
||||
"/a": nil,
|
||||
"/aa": {"aa"},
|
||||
"/aaa": {"aaa"},
|
||||
"/aaaa": {"aaaa"},
|
||||
},
|
||||
"/{foo:a{2,3}}": {
|
||||
"/a": nil,
|
||||
"/aa": {"aa"},
|
||||
"/aaa": {"aaa"},
|
||||
"/aaaa": nil,
|
||||
},
|
||||
"/{foo:[a-z]{3}}/{bar:[a-z]{2}}": {
|
||||
"/a": nil,
|
||||
"/ab": nil,
|
||||
"/abc": nil,
|
||||
"/abcd": nil,
|
||||
"/abc/ab": {"abc", "ab"},
|
||||
"/abc/abc": nil,
|
||||
"/abcd/ab": nil,
|
||||
},
|
||||
`/{foo:\w{3,}}/{bar:\d{2,}}`: {
|
||||
"/a": nil,
|
||||
"/ab": nil,
|
||||
"/abc": nil,
|
||||
"/abc/1": nil,
|
||||
"/abc/12": {"abc", "12"},
|
||||
"/abcd/12": {"abcd", "12"},
|
||||
"/abcd/123": {"abcd", "123"},
|
||||
},
|
||||
}
|
||||
|
||||
for pattern, paths := range tests {
|
||||
p, _ = newRouteRegexp(pattern, false, false, false, false)
|
||||
for path, result := range paths {
|
||||
matches = p.regexp.FindStringSubmatch(path)
|
||||
if result == nil {
|
||||
if matches != nil {
|
||||
t.Errorf("%v should not match %v.", pattern, path)
|
||||
}
|
||||
} else {
|
||||
if len(matches) != len(result)+1 {
|
||||
t.Errorf("Expected %v matches, got %v.", len(result)+1, len(matches))
|
||||
} else {
|
||||
for k, v := range result {
|
||||
if matches[k+1] != v {
|
||||
t.Errorf("Expected %v, got %v.", v, matches[k+1])
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
+272
@@ -0,0 +1,272 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// newRouteRegexp parses a route template and returns a routeRegexp,
|
||||
// used to match a host, a path or a query string.
|
||||
//
|
||||
// It will extract named variables, assemble a regexp to be matched, create
|
||||
// a "reverse" template to build URLs and compile regexps to validate variable
|
||||
// values used in URL building.
|
||||
//
|
||||
// Previously we accepted only Python-like identifiers for variable
|
||||
// names ([a-zA-Z_][a-zA-Z0-9_]*), but currently the only restriction is that
|
||||
// name and pattern can't be empty, and names can't contain a colon.
|
||||
func newRouteRegexp(tpl string, matchHost, matchPrefix, matchQuery, strictSlash bool) (*routeRegexp, error) {
|
||||
// Check if it is well-formed.
|
||||
idxs, errBraces := braceIndices(tpl)
|
||||
if errBraces != nil {
|
||||
return nil, errBraces
|
||||
}
|
||||
// Backup the original.
|
||||
template := tpl
|
||||
// Now let's parse it.
|
||||
defaultPattern := "[^/]+"
|
||||
if matchQuery {
|
||||
defaultPattern = "[^?&]+"
|
||||
matchPrefix = true
|
||||
} else if matchHost {
|
||||
defaultPattern = "[^.]+"
|
||||
matchPrefix = false
|
||||
}
|
||||
// Only match strict slash if not matching
|
||||
if matchPrefix || matchHost || matchQuery {
|
||||
strictSlash = false
|
||||
}
|
||||
// Set a flag for strictSlash.
|
||||
endSlash := false
|
||||
if strictSlash && strings.HasSuffix(tpl, "/") {
|
||||
tpl = tpl[:len(tpl)-1]
|
||||
endSlash = true
|
||||
}
|
||||
varsN := make([]string, len(idxs)/2)
|
||||
varsR := make([]*regexp.Regexp, len(idxs)/2)
|
||||
pattern := bytes.NewBufferString("")
|
||||
if !matchQuery {
|
||||
pattern.WriteByte('^')
|
||||
}
|
||||
reverse := bytes.NewBufferString("")
|
||||
var end int
|
||||
var err error
|
||||
for i := 0; i < len(idxs); i += 2 {
|
||||
// Set all values we are interested in.
|
||||
raw := tpl[end:idxs[i]]
|
||||
end = idxs[i+1]
|
||||
parts := strings.SplitN(tpl[idxs[i]+1:end-1], ":", 2)
|
||||
name := parts[0]
|
||||
patt := defaultPattern
|
||||
if len(parts) == 2 {
|
||||
patt = parts[1]
|
||||
}
|
||||
// Name or pattern can't be empty.
|
||||
if name == "" || patt == "" {
|
||||
return nil, fmt.Errorf("mux: missing name or pattern in %q",
|
||||
tpl[idxs[i]:end])
|
||||
}
|
||||
// Build the regexp pattern.
|
||||
fmt.Fprintf(pattern, "%s(%s)", regexp.QuoteMeta(raw), patt)
|
||||
// Build the reverse template.
|
||||
fmt.Fprintf(reverse, "%s%%s", raw)
|
||||
// Append variable name and compiled pattern.
|
||||
varsN[i/2] = name
|
||||
varsR[i/2], err = regexp.Compile(fmt.Sprintf("^%s$", patt))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
// Add the remaining.
|
||||
raw := tpl[end:]
|
||||
pattern.WriteString(regexp.QuoteMeta(raw))
|
||||
if strictSlash {
|
||||
pattern.WriteString("[/]?")
|
||||
}
|
||||
if !matchPrefix {
|
||||
pattern.WriteByte('$')
|
||||
}
|
||||
reverse.WriteString(raw)
|
||||
if endSlash {
|
||||
reverse.WriteByte('/')
|
||||
}
|
||||
// Compile full regexp.
|
||||
reg, errCompile := regexp.Compile(pattern.String())
|
||||
if errCompile != nil {
|
||||
return nil, errCompile
|
||||
}
|
||||
// Done!
|
||||
return &routeRegexp{
|
||||
template: template,
|
||||
matchHost: matchHost,
|
||||
matchQuery: matchQuery,
|
||||
strictSlash: strictSlash,
|
||||
regexp: reg,
|
||||
reverse: reverse.String(),
|
||||
varsN: varsN,
|
||||
varsR: varsR,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// routeRegexp stores a regexp to match a host or path and information to
|
||||
// collect and validate route variables.
|
||||
type routeRegexp struct {
|
||||
// The unmodified template.
|
||||
template string
|
||||
// True for host match, false for path or query string match.
|
||||
matchHost bool
|
||||
// True for query string match, false for path and host match.
|
||||
matchQuery bool
|
||||
// The strictSlash value defined on the route, but disabled if PathPrefix was used.
|
||||
strictSlash bool
|
||||
// Expanded regexp.
|
||||
regexp *regexp.Regexp
|
||||
// Reverse template.
|
||||
reverse string
|
||||
// Variable names.
|
||||
varsN []string
|
||||
// Variable regexps (validators).
|
||||
varsR []*regexp.Regexp
|
||||
}
|
||||
|
||||
// Match matches the regexp against the URL host or path.
|
||||
func (r *routeRegexp) Match(req *http.Request, match *RouteMatch) bool {
|
||||
if !r.matchHost {
|
||||
if r.matchQuery {
|
||||
return r.regexp.MatchString(req.URL.RawQuery)
|
||||
} else {
|
||||
return r.regexp.MatchString(req.URL.Path)
|
||||
}
|
||||
}
|
||||
return r.regexp.MatchString(getHost(req))
|
||||
}
|
||||
|
||||
// url builds a URL part using the given values.
|
||||
func (r *routeRegexp) url(values map[string]string) (string, error) {
|
||||
urlValues := make([]interface{}, len(r.varsN))
|
||||
for k, v := range r.varsN {
|
||||
value, ok := values[v]
|
||||
if !ok {
|
||||
return "", fmt.Errorf("mux: missing route variable %q", v)
|
||||
}
|
||||
urlValues[k] = value
|
||||
}
|
||||
rv := fmt.Sprintf(r.reverse, urlValues...)
|
||||
if !r.regexp.MatchString(rv) {
|
||||
// The URL is checked against the full regexp, instead of checking
|
||||
// individual variables. This is faster but to provide a good error
|
||||
// message, we check individual regexps if the URL doesn't match.
|
||||
for k, v := range r.varsN {
|
||||
if !r.varsR[k].MatchString(values[v]) {
|
||||
return "", fmt.Errorf(
|
||||
"mux: variable %q doesn't match, expected %q", values[v],
|
||||
r.varsR[k].String())
|
||||
}
|
||||
}
|
||||
}
|
||||
return rv, nil
|
||||
}
|
||||
|
||||
// braceIndices returns the first level curly brace indices from a string.
|
||||
// It returns an error in case of unbalanced braces.
|
||||
func braceIndices(s string) ([]int, error) {
|
||||
var level, idx int
|
||||
idxs := make([]int, 0)
|
||||
for i := 0; i < len(s); i++ {
|
||||
switch s[i] {
|
||||
case '{':
|
||||
if level++; level == 1 {
|
||||
idx = i
|
||||
}
|
||||
case '}':
|
||||
if level--; level == 0 {
|
||||
idxs = append(idxs, idx, i+1)
|
||||
} else if level < 0 {
|
||||
return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
|
||||
}
|
||||
}
|
||||
}
|
||||
if level != 0 {
|
||||
return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
|
||||
}
|
||||
return idxs, nil
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// routeRegexpGroup
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// routeRegexpGroup groups the route matchers that carry variables.
|
||||
type routeRegexpGroup struct {
|
||||
host *routeRegexp
|
||||
path *routeRegexp
|
||||
queries []*routeRegexp
|
||||
}
|
||||
|
||||
// setMatch extracts the variables from the URL once a route matches.
|
||||
func (v *routeRegexpGroup) setMatch(req *http.Request, m *RouteMatch, r *Route) {
|
||||
// Store host variables.
|
||||
if v.host != nil {
|
||||
hostVars := v.host.regexp.FindStringSubmatch(getHost(req))
|
||||
if hostVars != nil {
|
||||
for k, v := range v.host.varsN {
|
||||
m.Vars[v] = hostVars[k+1]
|
||||
}
|
||||
}
|
||||
}
|
||||
// Store path variables.
|
||||
if v.path != nil {
|
||||
pathVars := v.path.regexp.FindStringSubmatch(req.URL.Path)
|
||||
if pathVars != nil {
|
||||
for k, v := range v.path.varsN {
|
||||
m.Vars[v] = pathVars[k+1]
|
||||
}
|
||||
// Check if we should redirect.
|
||||
if v.path.strictSlash {
|
||||
p1 := strings.HasSuffix(req.URL.Path, "/")
|
||||
p2 := strings.HasSuffix(v.path.template, "/")
|
||||
if p1 != p2 {
|
||||
u, _ := url.Parse(req.URL.String())
|
||||
if p1 {
|
||||
u.Path = u.Path[:len(u.Path)-1]
|
||||
} else {
|
||||
u.Path += "/"
|
||||
}
|
||||
m.Handler = http.RedirectHandler(u.String(), 301)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// Store query string variables.
|
||||
rawQuery := req.URL.RawQuery
|
||||
for _, q := range v.queries {
|
||||
queryVars := q.regexp.FindStringSubmatch(rawQuery)
|
||||
if queryVars != nil {
|
||||
for k, v := range q.varsN {
|
||||
m.Vars[v] = queryVars[k+1]
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// getHost tries its best to return the request host.
|
||||
func getHost(r *http.Request) string {
|
||||
if r.URL.IsAbs() {
|
||||
return r.URL.Host
|
||||
}
|
||||
host := r.Host
|
||||
// Slice off any port information.
|
||||
if i := strings.Index(host, ":"); i != -1 {
|
||||
host = host[:i]
|
||||
}
|
||||
return host
|
||||
|
||||
}
|
||||
+571
@@ -0,0 +1,571 @@
|
||||
// Copyright 2012 The Gorilla Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package mux
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Route stores information to match a request and build URLs.
|
||||
type Route struct {
|
||||
// Parent where the route was registered (a Router).
|
||||
parent parentRoute
|
||||
// Request handler for the route.
|
||||
handler http.Handler
|
||||
// List of matchers.
|
||||
matchers []matcher
|
||||
// Manager for the variables from host and path.
|
||||
regexp *routeRegexpGroup
|
||||
// If true, when the path pattern is "/path/", accessing "/path" will
|
||||
// redirect to the former and vice versa.
|
||||
strictSlash bool
|
||||
// If true, this route never matches: it is only used to build URLs.
|
||||
buildOnly bool
|
||||
// The name used to build URLs.
|
||||
name string
|
||||
// Error resulted from building a route.
|
||||
err error
|
||||
|
||||
buildVarsFunc BuildVarsFunc
|
||||
}
|
||||
|
||||
// Match matches the route against the request.
|
||||
func (r *Route) Match(req *http.Request, match *RouteMatch) bool {
|
||||
if r.buildOnly || r.err != nil {
|
||||
return false
|
||||
}
|
||||
// Match everything.
|
||||
for _, m := range r.matchers {
|
||||
if matched := m.Match(req, match); !matched {
|
||||
return false
|
||||
}
|
||||
}
|
||||
// Yay, we have a match. Let's collect some info about it.
|
||||
if match.Route == nil {
|
||||
match.Route = r
|
||||
}
|
||||
if match.Handler == nil {
|
||||
match.Handler = r.handler
|
||||
}
|
||||
if match.Vars == nil {
|
||||
match.Vars = make(map[string]string)
|
||||
}
|
||||
// Set variables.
|
||||
if r.regexp != nil {
|
||||
r.regexp.setMatch(req, match, r)
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Route attributes
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// GetError returns an error resulted from building the route, if any.
|
||||
func (r *Route) GetError() error {
|
||||
return r.err
|
||||
}
|
||||
|
||||
// BuildOnly sets the route to never match: it is only used to build URLs.
|
||||
func (r *Route) BuildOnly() *Route {
|
||||
r.buildOnly = true
|
||||
return r
|
||||
}
|
||||
|
||||
// Handler --------------------------------------------------------------------
|
||||
|
||||
// Handler sets a handler for the route.
|
||||
func (r *Route) Handler(handler http.Handler) *Route {
|
||||
if r.err == nil {
|
||||
r.handler = handler
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// HandlerFunc sets a handler function for the route.
|
||||
func (r *Route) HandlerFunc(f func(http.ResponseWriter, *http.Request)) *Route {
|
||||
return r.Handler(http.HandlerFunc(f))
|
||||
}
|
||||
|
||||
// GetHandler returns the handler for the route, if any.
|
||||
func (r *Route) GetHandler() http.Handler {
|
||||
return r.handler
|
||||
}
|
||||
|
||||
// Name -----------------------------------------------------------------------
|
||||
|
||||
// Name sets the name for the route, used to build URLs.
|
||||
// If the name was registered already it will be overwritten.
|
||||
func (r *Route) Name(name string) *Route {
|
||||
if r.name != "" {
|
||||
r.err = fmt.Errorf("mux: route already has name %q, can't set %q",
|
||||
r.name, name)
|
||||
}
|
||||
if r.err == nil {
|
||||
r.name = name
|
||||
r.getNamedRoutes()[name] = r
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// GetName returns the name for the route, if any.
|
||||
func (r *Route) GetName() string {
|
||||
return r.name
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Matchers
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// matcher types try to match a request.
|
||||
type matcher interface {
|
||||
Match(*http.Request, *RouteMatch) bool
|
||||
}
|
||||
|
||||
// addMatcher adds a matcher to the route.
|
||||
func (r *Route) addMatcher(m matcher) *Route {
|
||||
if r.err == nil {
|
||||
r.matchers = append(r.matchers, m)
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// addRegexpMatcher adds a host or path matcher and builder to a route.
|
||||
func (r *Route) addRegexpMatcher(tpl string, matchHost, matchPrefix, matchQuery bool) error {
|
||||
if r.err != nil {
|
||||
return r.err
|
||||
}
|
||||
r.regexp = r.getRegexpGroup()
|
||||
if !matchHost && !matchQuery {
|
||||
if len(tpl) == 0 || tpl[0] != '/' {
|
||||
return fmt.Errorf("mux: path must start with a slash, got %q", tpl)
|
||||
}
|
||||
if r.regexp.path != nil {
|
||||
tpl = strings.TrimRight(r.regexp.path.template, "/") + tpl
|
||||
}
|
||||
}
|
||||
rr, err := newRouteRegexp(tpl, matchHost, matchPrefix, matchQuery, r.strictSlash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, q := range r.regexp.queries {
|
||||
if err = uniqueVars(rr.varsN, q.varsN); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if matchHost {
|
||||
if r.regexp.path != nil {
|
||||
if err = uniqueVars(rr.varsN, r.regexp.path.varsN); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
r.regexp.host = rr
|
||||
} else {
|
||||
if r.regexp.host != nil {
|
||||
if err = uniqueVars(rr.varsN, r.regexp.host.varsN); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if matchQuery {
|
||||
r.regexp.queries = append(r.regexp.queries, rr)
|
||||
} else {
|
||||
r.regexp.path = rr
|
||||
}
|
||||
}
|
||||
r.addMatcher(rr)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Headers --------------------------------------------------------------------
|
||||
|
||||
// headerMatcher matches the request against header values.
|
||||
type headerMatcher map[string]string
|
||||
|
||||
func (m headerMatcher) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return matchMap(m, r.Header, true)
|
||||
}
|
||||
|
||||
// Headers adds a matcher for request header values.
|
||||
// It accepts a sequence of key/value pairs to be matched. For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Headers("Content-Type", "application/json",
|
||||
// "X-Requested-With", "XMLHttpRequest")
|
||||
//
|
||||
// The above route will only match if both request header values match.
|
||||
//
|
||||
// It the value is an empty string, it will match any value if the key is set.
|
||||
func (r *Route) Headers(pairs ...string) *Route {
|
||||
if r.err == nil {
|
||||
var headers map[string]string
|
||||
headers, r.err = mapFromPairs(pairs...)
|
||||
return r.addMatcher(headerMatcher(headers))
|
||||
}
|
||||
return r
|
||||
}
|
||||
|
||||
// Host -----------------------------------------------------------------------
|
||||
|
||||
// Host adds a matcher for the URL host.
|
||||
// It accepts a template with zero or more URL variables enclosed by {}.
|
||||
// Variables can define an optional regexp pattern to be matched:
|
||||
//
|
||||
// - {name} matches anything until the next dot.
|
||||
//
|
||||
// - {name:pattern} matches the given regexp pattern.
|
||||
//
|
||||
// For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Host("www.domain.com")
|
||||
// r.Host("{subdomain}.domain.com")
|
||||
// r.Host("{subdomain:[a-z]+}.domain.com")
|
||||
//
|
||||
// Variable names must be unique in a given route. They can be retrieved
|
||||
// calling mux.Vars(request).
|
||||
func (r *Route) Host(tpl string) *Route {
|
||||
r.err = r.addRegexpMatcher(tpl, true, false, false)
|
||||
return r
|
||||
}
|
||||
|
||||
// MatcherFunc ----------------------------------------------------------------
|
||||
|
||||
// MatcherFunc is the function signature used by custom matchers.
|
||||
type MatcherFunc func(*http.Request, *RouteMatch) bool
|
||||
|
||||
func (m MatcherFunc) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return m(r, match)
|
||||
}
|
||||
|
||||
// MatcherFunc adds a custom function to be used as request matcher.
|
||||
func (r *Route) MatcherFunc(f MatcherFunc) *Route {
|
||||
return r.addMatcher(f)
|
||||
}
|
||||
|
||||
// Methods --------------------------------------------------------------------
|
||||
|
||||
// methodMatcher matches the request against HTTP methods.
|
||||
type methodMatcher []string
|
||||
|
||||
func (m methodMatcher) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return matchInArray(m, r.Method)
|
||||
}
|
||||
|
||||
// Methods adds a matcher for HTTP methods.
|
||||
// It accepts a sequence of one or more methods to be matched, e.g.:
|
||||
// "GET", "POST", "PUT".
|
||||
func (r *Route) Methods(methods ...string) *Route {
|
||||
for k, v := range methods {
|
||||
methods[k] = strings.ToUpper(v)
|
||||
}
|
||||
return r.addMatcher(methodMatcher(methods))
|
||||
}
|
||||
|
||||
// Path -----------------------------------------------------------------------
|
||||
|
||||
// Path adds a matcher for the URL path.
|
||||
// It accepts a template with zero or more URL variables enclosed by {}. The
|
||||
// template must start with a "/".
|
||||
// Variables can define an optional regexp pattern to be matched:
|
||||
//
|
||||
// - {name} matches anything until the next slash.
|
||||
//
|
||||
// - {name:pattern} matches the given regexp pattern.
|
||||
//
|
||||
// For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Path("/products/").Handler(ProductsHandler)
|
||||
// r.Path("/products/{key}").Handler(ProductsHandler)
|
||||
// r.Path("/articles/{category}/{id:[0-9]+}").
|
||||
// Handler(ArticleHandler)
|
||||
//
|
||||
// Variable names must be unique in a given route. They can be retrieved
|
||||
// calling mux.Vars(request).
|
||||
func (r *Route) Path(tpl string) *Route {
|
||||
r.err = r.addRegexpMatcher(tpl, false, false, false)
|
||||
return r
|
||||
}
|
||||
|
||||
// PathPrefix -----------------------------------------------------------------
|
||||
|
||||
// PathPrefix adds a matcher for the URL path prefix. This matches if the given
|
||||
// template is a prefix of the full URL path. See Route.Path() for details on
|
||||
// the tpl argument.
|
||||
//
|
||||
// Note that it does not treat slashes specially ("/foobar/" will be matched by
|
||||
// the prefix "/foo") so you may want to use a trailing slash here.
|
||||
//
|
||||
// Also note that the setting of Router.StrictSlash() has no effect on routes
|
||||
// with a PathPrefix matcher.
|
||||
func (r *Route) PathPrefix(tpl string) *Route {
|
||||
r.err = r.addRegexpMatcher(tpl, false, true, false)
|
||||
return r
|
||||
}
|
||||
|
||||
// Query ----------------------------------------------------------------------
|
||||
|
||||
// Queries adds a matcher for URL query values.
|
||||
// It accepts a sequence of key/value pairs. Values may define variables.
|
||||
// For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Queries("foo", "bar", "id", "{id:[0-9]+}")
|
||||
//
|
||||
// The above route will only match if the URL contains the defined queries
|
||||
// values, e.g.: ?foo=bar&id=42.
|
||||
//
|
||||
// It the value is an empty string, it will match any value if the key is set.
|
||||
//
|
||||
// Variables can define an optional regexp pattern to be matched:
|
||||
//
|
||||
// - {name} matches anything until the next slash.
|
||||
//
|
||||
// - {name:pattern} matches the given regexp pattern.
|
||||
func (r *Route) Queries(pairs ...string) *Route {
|
||||
length := len(pairs)
|
||||
if length%2 != 0 {
|
||||
r.err = fmt.Errorf(
|
||||
"mux: number of parameters must be multiple of 2, got %v", pairs)
|
||||
return nil
|
||||
}
|
||||
for i := 0; i < length; i += 2 {
|
||||
if r.err = r.addRegexpMatcher(pairs[i]+"="+pairs[i+1], false, true, true); r.err != nil {
|
||||
return r
|
||||
}
|
||||
}
|
||||
|
||||
return r
|
||||
}
|
||||
|
||||
// Schemes --------------------------------------------------------------------
|
||||
|
||||
// schemeMatcher matches the request against URL schemes.
|
||||
type schemeMatcher []string
|
||||
|
||||
func (m schemeMatcher) Match(r *http.Request, match *RouteMatch) bool {
|
||||
return matchInArray(m, r.URL.Scheme)
|
||||
}
|
||||
|
||||
// Schemes adds a matcher for URL schemes.
|
||||
// It accepts a sequence of schemes to be matched, e.g.: "http", "https".
|
||||
func (r *Route) Schemes(schemes ...string) *Route {
|
||||
for k, v := range schemes {
|
||||
schemes[k] = strings.ToLower(v)
|
||||
}
|
||||
return r.addMatcher(schemeMatcher(schemes))
|
||||
}
|
||||
|
||||
// BuildVarsFunc --------------------------------------------------------------
|
||||
|
||||
// BuildVarsFunc is the function signature used by custom build variable
|
||||
// functions (which can modify route variables before a route's URL is built).
|
||||
type BuildVarsFunc func(map[string]string) map[string]string
|
||||
|
||||
// BuildVarsFunc adds a custom function to be used to modify build variables
|
||||
// before a route's URL is built.
|
||||
func (r *Route) BuildVarsFunc(f BuildVarsFunc) *Route {
|
||||
r.buildVarsFunc = f
|
||||
return r
|
||||
}
|
||||
|
||||
// Subrouter ------------------------------------------------------------------
|
||||
|
||||
// Subrouter creates a subrouter for the route.
|
||||
//
|
||||
// It will test the inner routes only if the parent route matched. For example:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// s := r.Host("www.domain.com").Subrouter()
|
||||
// s.HandleFunc("/products/", ProductsHandler)
|
||||
// s.HandleFunc("/products/{key}", ProductHandler)
|
||||
// s.HandleFunc("/articles/{category}/{id:[0-9]+}"), ArticleHandler)
|
||||
//
|
||||
// Here, the routes registered in the subrouter won't be tested if the host
|
||||
// doesn't match.
|
||||
func (r *Route) Subrouter() *Router {
|
||||
router := &Router{parent: r, strictSlash: r.strictSlash}
|
||||
r.addMatcher(router)
|
||||
return router
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// URL building
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// URL builds a URL for the route.
|
||||
//
|
||||
// It accepts a sequence of key/value pairs for the route variables. For
|
||||
// example, given this route:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
|
||||
// Name("article")
|
||||
//
|
||||
// ...a URL for it can be built using:
|
||||
//
|
||||
// url, err := r.Get("article").URL("category", "technology", "id", "42")
|
||||
//
|
||||
// ...which will return an url.URL with the following path:
|
||||
//
|
||||
// "/articles/technology/42"
|
||||
//
|
||||
// This also works for host variables:
|
||||
//
|
||||
// r := mux.NewRouter()
|
||||
// r.Host("{subdomain}.domain.com").
|
||||
// HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
|
||||
// Name("article")
|
||||
//
|
||||
// // url.String() will be "http://news.domain.com/articles/technology/42"
|
||||
// url, err := r.Get("article").URL("subdomain", "news",
|
||||
// "category", "technology",
|
||||
// "id", "42")
|
||||
//
|
||||
// All variables defined in the route are required, and their values must
|
||||
// conform to the corresponding patterns.
|
||||
func (r *Route) URL(pairs ...string) (*url.URL, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
if r.regexp == nil {
|
||||
return nil, errors.New("mux: route doesn't have a host or path")
|
||||
}
|
||||
values, err := r.prepareVars(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var scheme, host, path string
|
||||
if r.regexp.host != nil {
|
||||
// Set a default scheme.
|
||||
scheme = "http"
|
||||
if host, err = r.regexp.host.url(values); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
if r.regexp.path != nil {
|
||||
if path, err = r.regexp.path.url(values); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return &url.URL{
|
||||
Scheme: scheme,
|
||||
Host: host,
|
||||
Path: path,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// URLHost builds the host part of the URL for a route. See Route.URL().
|
||||
//
|
||||
// The route must have a host defined.
|
||||
func (r *Route) URLHost(pairs ...string) (*url.URL, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
if r.regexp == nil || r.regexp.host == nil {
|
||||
return nil, errors.New("mux: route doesn't have a host")
|
||||
}
|
||||
values, err := r.prepareVars(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
host, err := r.regexp.host.url(values)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &url.URL{
|
||||
Scheme: "http",
|
||||
Host: host,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// URLPath builds the path part of the URL for a route. See Route.URL().
|
||||
//
|
||||
// The route must have a path defined.
|
||||
func (r *Route) URLPath(pairs ...string) (*url.URL, error) {
|
||||
if r.err != nil {
|
||||
return nil, r.err
|
||||
}
|
||||
if r.regexp == nil || r.regexp.path == nil {
|
||||
return nil, errors.New("mux: route doesn't have a path")
|
||||
}
|
||||
values, err := r.prepareVars(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
path, err := r.regexp.path.url(values)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &url.URL{
|
||||
Path: path,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// prepareVars converts the route variable pairs into a map. If the route has a
|
||||
// BuildVarsFunc, it is invoked.
|
||||
func (r *Route) prepareVars(pairs ...string) (map[string]string, error) {
|
||||
m, err := mapFromPairs(pairs...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return r.buildVars(m), nil
|
||||
}
|
||||
|
||||
func (r *Route) buildVars(m map[string]string) map[string]string {
|
||||
if r.parent != nil {
|
||||
m = r.parent.buildVars(m)
|
||||
}
|
||||
if r.buildVarsFunc != nil {
|
||||
m = r.buildVarsFunc(m)
|
||||
}
|
||||
return m
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// parentRoute
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// parentRoute allows routes to know about parent host and path definitions.
|
||||
type parentRoute interface {
|
||||
getNamedRoutes() map[string]*Route
|
||||
getRegexpGroup() *routeRegexpGroup
|
||||
buildVars(map[string]string) map[string]string
|
||||
}
|
||||
|
||||
// getNamedRoutes returns the map where named routes are registered.
|
||||
func (r *Route) getNamedRoutes() map[string]*Route {
|
||||
if r.parent == nil {
|
||||
// During tests router is not always set.
|
||||
r.parent = NewRouter()
|
||||
}
|
||||
return r.parent.getNamedRoutes()
|
||||
}
|
||||
|
||||
// getRegexpGroup returns regexp definitions from this route.
|
||||
func (r *Route) getRegexpGroup() *routeRegexpGroup {
|
||||
if r.regexp == nil {
|
||||
if r.parent == nil {
|
||||
// During tests router is not always set.
|
||||
r.parent = NewRouter()
|
||||
}
|
||||
regexp := r.parent.getRegexpGroup()
|
||||
if regexp == nil {
|
||||
r.regexp = new(routeRegexpGroup)
|
||||
} else {
|
||||
// Copy.
|
||||
r.regexp = &routeRegexpGroup{
|
||||
host: regexp.host,
|
||||
path: regexp.path,
|
||||
queries: regexp.queries,
|
||||
}
|
||||
}
|
||||
}
|
||||
return r.regexp
|
||||
}
|
||||
+22
@@ -0,0 +1,22 @@
|
||||
# Compiled Object files, Static and Dynamic libs (Shared Objects)
|
||||
*.o
|
||||
*.a
|
||||
*.so
|
||||
|
||||
# Folders
|
||||
_obj
|
||||
_test
|
||||
|
||||
# Architecture specific extensions/prefixes
|
||||
*.[568vq]
|
||||
[568vq].out
|
||||
|
||||
*.cgo1.go
|
||||
*.cgo2.c
|
||||
_cgo_defun.c
|
||||
_cgo_gotypes.go
|
||||
_cgo_export.*
|
||||
|
||||
_testmain.go
|
||||
|
||||
*.exe
|
||||
+6
@@ -0,0 +1,6 @@
|
||||
language: go
|
||||
|
||||
go:
|
||||
- 1.1
|
||||
- 1.2
|
||||
- tip
|
||||
+8
@@ -0,0 +1,8 @@
|
||||
# This is the official list of Gorilla WebSocket authors for copyright
|
||||
# purposes.
|
||||
#
|
||||
# Please keep the list sorted.
|
||||
|
||||
Gary Burd <[email protected]>
|
||||
Joachim Bauch <[email protected]>
|
||||
|
||||
+22
@@ -0,0 +1,22 @@
|
||||
Copyright (c) 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
Redistributions of source code must retain the above copyright notice, this
|
||||
list of conditions and the following disclaimer.
|
||||
|
||||
Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
+59
@@ -0,0 +1,59 @@
|
||||
# Gorilla WebSocket
|
||||
|
||||
Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
|
||||
[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
|
||||
|
||||
### Documentation
|
||||
|
||||
* [API Reference](http://godoc.org/github.com/gorilla/websocket)
|
||||
* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
|
||||
* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
|
||||
|
||||
### Status
|
||||
|
||||
The Gorilla WebSocket package provides a complete and tested implementation of
|
||||
the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The
|
||||
package API is stable.
|
||||
|
||||
### Installation
|
||||
|
||||
go get github.com/gorilla/websocket
|
||||
|
||||
### Protocol Compliance
|
||||
|
||||
The Gorilla WebSocket package passes the server tests in the [Autobahn Test
|
||||
Suite](http://autobahn.ws/testsuite) using the application in the [examples/autobahn
|
||||
subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
|
||||
|
||||
### Gorilla WebSocket compared with other packages
|
||||
|
||||
<table>
|
||||
<tr>
|
||||
<th></th>
|
||||
<th><a href="http://godoc.org/github.com/gorilla/websocket">github.com/gorilla</a></th>
|
||||
<th><a href="http://godoc.org/golang.org/x/net/websocket">golang.org/x/net</a></th>
|
||||
</tr>
|
||||
<tr>
|
||||
<tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr>
|
||||
<tr><td>Passes <a href="http://autobahn.ws/testsuite/">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
|
||||
<tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr>
|
||||
<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr>
|
||||
<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr>
|
||||
<tr><td>Get the <a href="https://tools.ietf.org/html/rfc6455#section-5.6">type</a> of a received data message</td><td>Yes</td><td>Yes, see note 2</td></tr>
|
||||
<tr><td colspan="3">Other Features</tr></td>
|
||||
<tr><td>Limit size of received message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.SetReadLimit">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=5082">No</a></td></tr>
|
||||
<tr><td>Read message using io.Reader</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextReader">Yes</a></td><td>No, see note 3</td></tr>
|
||||
<tr><td>Write message using io.WriteCloser</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextWriter">Yes</a></td><td>No, see note 3</td></tr>
|
||||
</table>
|
||||
|
||||
Notes:
|
||||
|
||||
1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html).
|
||||
2. The application can get the type of a received data message by implementing
|
||||
a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal)
|
||||
function.
|
||||
3. The go.net io.Reader and io.Writer operate across WebSocket frame boundaries.
|
||||
Read returns when the input buffer is full or a frame boundary is
|
||||
encountered. Each call to Write sends a single frame message. The Gorilla
|
||||
io.Reader and io.WriteCloser operate on a single WebSocket message.
|
||||
|
||||
+19
@@ -0,0 +1,19 @@
|
||||
// Copyright 2014 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"testing"
|
||||
)
|
||||
|
||||
func BenchmarkMaskBytes(b *testing.B) {
|
||||
var key [4]byte
|
||||
data := make([]byte, 1024)
|
||||
pos := 0
|
||||
for i := 0; i < b.N; i++ {
|
||||
pos = maskBytes(key, pos, data)
|
||||
}
|
||||
b.SetBytes(int64(len(data)))
|
||||
}
|
||||
+269
@@ -0,0 +1,269 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/tls"
|
||||
"errors"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// ErrBadHandshake is returned when the server response to opening handshake is
|
||||
// invalid.
|
||||
var ErrBadHandshake = errors.New("websocket: bad handshake")
|
||||
|
||||
// NewClient creates a new client connection using the given net connection.
|
||||
// The URL u specifies the host and request URI. Use requestHeader to specify
|
||||
// the origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies
|
||||
// (Cookie). Use the response.Header to get the selected subprotocol
|
||||
// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
|
||||
//
|
||||
// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
|
||||
// non-nil *http.Response so that callers can handle redirects, authentication,
|
||||
// etc.
|
||||
func NewClient(netConn net.Conn, u *url.URL, requestHeader http.Header, readBufSize, writeBufSize int) (c *Conn, response *http.Response, err error) {
|
||||
challengeKey, err := generateChallengeKey()
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
acceptKey := computeAcceptKey(challengeKey)
|
||||
|
||||
c = newConn(netConn, false, readBufSize, writeBufSize)
|
||||
p := c.writeBuf[:0]
|
||||
p = append(p, "GET "...)
|
||||
p = append(p, u.RequestURI()...)
|
||||
p = append(p, " HTTP/1.1\r\nHost: "...)
|
||||
p = append(p, u.Host...)
|
||||
// "Upgrade" is capitalized for servers that do not use case insensitive
|
||||
// comparisons on header tokens.
|
||||
p = append(p, "\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Version: 13\r\nSec-WebSocket-Key: "...)
|
||||
p = append(p, challengeKey...)
|
||||
p = append(p, "\r\n"...)
|
||||
for k, vs := range requestHeader {
|
||||
for _, v := range vs {
|
||||
p = append(p, k...)
|
||||
p = append(p, ": "...)
|
||||
p = append(p, v...)
|
||||
p = append(p, "\r\n"...)
|
||||
}
|
||||
}
|
||||
p = append(p, "\r\n"...)
|
||||
|
||||
if _, err := netConn.Write(p); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
resp, err := http.ReadResponse(c.br, &http.Request{Method: "GET", URL: u})
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
if resp.StatusCode != 101 ||
|
||||
!strings.EqualFold(resp.Header.Get("Upgrade"), "websocket") ||
|
||||
!strings.EqualFold(resp.Header.Get("Connection"), "upgrade") ||
|
||||
resp.Header.Get("Sec-Websocket-Accept") != acceptKey {
|
||||
return nil, resp, ErrBadHandshake
|
||||
}
|
||||
c.subprotocol = resp.Header.Get("Sec-Websocket-Protocol")
|
||||
return c, resp, nil
|
||||
}
|
||||
|
||||
// A Dialer contains options for connecting to WebSocket server.
|
||||
type Dialer struct {
|
||||
// NetDial specifies the dial function for creating TCP connections. If
|
||||
// NetDial is nil, net.Dial is used.
|
||||
NetDial func(network, addr string) (net.Conn, error)
|
||||
|
||||
// TLSClientConfig specifies the TLS configuration to use with tls.Client.
|
||||
// If nil, the default configuration is used.
|
||||
TLSClientConfig *tls.Config
|
||||
|
||||
// HandshakeTimeout specifies the duration for the handshake to complete.
|
||||
HandshakeTimeout time.Duration
|
||||
|
||||
// Input and output buffer sizes. If the buffer size is zero, then a
|
||||
// default value of 4096 is used.
|
||||
ReadBufferSize, WriteBufferSize int
|
||||
|
||||
// Subprotocols specifies the client's requested subprotocols.
|
||||
Subprotocols []string
|
||||
}
|
||||
|
||||
var errMalformedURL = errors.New("malformed ws or wss URL")
|
||||
|
||||
// parseURL parses the URL. The url.Parse function is not used here because
|
||||
// url.Parse mangles the path.
|
||||
func parseURL(s string) (*url.URL, error) {
|
||||
// From the RFC:
|
||||
//
|
||||
// ws-URI = "ws:" "//" host [ ":" port ] path [ "?" query ]
|
||||
// wss-URI = "wss:" "//" host [ ":" port ] path [ "?" query ]
|
||||
//
|
||||
// We don't use the net/url parser here because the dialer interface does
|
||||
// not provide a way for applications to work around percent deocding in
|
||||
// the net/url parser.
|
||||
|
||||
var u url.URL
|
||||
switch {
|
||||
case strings.HasPrefix(s, "ws://"):
|
||||
u.Scheme = "ws"
|
||||
s = s[len("ws://"):]
|
||||
case strings.HasPrefix(s, "wss://"):
|
||||
u.Scheme = "wss"
|
||||
s = s[len("wss://"):]
|
||||
default:
|
||||
return nil, errMalformedURL
|
||||
}
|
||||
|
||||
u.Host = s
|
||||
u.Opaque = "/"
|
||||
if i := strings.Index(s, "/"); i >= 0 {
|
||||
u.Host = s[:i]
|
||||
u.Opaque = s[i:]
|
||||
}
|
||||
|
||||
if strings.Contains(u.Host, "@") {
|
||||
// WebSocket URIs do not contain user information.
|
||||
return nil, errMalformedURL
|
||||
}
|
||||
|
||||
return &u, nil
|
||||
}
|
||||
|
||||
func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) {
|
||||
hostPort = u.Host
|
||||
hostNoPort = u.Host
|
||||
if i := strings.LastIndex(u.Host, ":"); i > strings.LastIndex(u.Host, "]") {
|
||||
hostNoPort = hostNoPort[:i]
|
||||
} else {
|
||||
if u.Scheme == "wss" {
|
||||
hostPort += ":443"
|
||||
} else {
|
||||
hostPort += ":80"
|
||||
}
|
||||
}
|
||||
return hostPort, hostNoPort
|
||||
}
|
||||
|
||||
// DefaultDialer is a dialer with all fields set to the default zero values.
|
||||
var DefaultDialer *Dialer
|
||||
|
||||
// Dial creates a new client connection. Use requestHeader to specify the
|
||||
// origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies (Cookie).
|
||||
// Use the response.Header to get the selected subprotocol
|
||||
// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
|
||||
//
|
||||
// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
|
||||
// non-nil *http.Response so that callers can handle redirects, authentication,
|
||||
// etcetera. The response body may not contain the entire response and does not
|
||||
// need to be closed by the application.
|
||||
func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
|
||||
u, err := parseURL(urlStr)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
hostPort, hostNoPort := hostPortNoPort(u)
|
||||
|
||||
if d == nil {
|
||||
d = &Dialer{}
|
||||
}
|
||||
|
||||
var deadline time.Time
|
||||
if d.HandshakeTimeout != 0 {
|
||||
deadline = time.Now().Add(d.HandshakeTimeout)
|
||||
}
|
||||
|
||||
netDial := d.NetDial
|
||||
if netDial == nil {
|
||||
netDialer := &net.Dialer{Deadline: deadline}
|
||||
netDial = netDialer.Dial
|
||||
}
|
||||
|
||||
netConn, err := netDial("tcp", hostPort)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
defer func() {
|
||||
if netConn != nil {
|
||||
netConn.Close()
|
||||
}
|
||||
}()
|
||||
|
||||
if err := netConn.SetDeadline(deadline); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if u.Scheme == "wss" {
|
||||
cfg := d.TLSClientConfig
|
||||
if cfg == nil {
|
||||
cfg = &tls.Config{ServerName: hostNoPort}
|
||||
} else if cfg.ServerName == "" {
|
||||
shallowCopy := *cfg
|
||||
cfg = &shallowCopy
|
||||
cfg.ServerName = hostNoPort
|
||||
}
|
||||
tlsConn := tls.Client(netConn, cfg)
|
||||
netConn = tlsConn
|
||||
if err := tlsConn.Handshake(); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
if !cfg.InsecureSkipVerify {
|
||||
if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if len(d.Subprotocols) > 0 {
|
||||
h := http.Header{}
|
||||
for k, v := range requestHeader {
|
||||
h[k] = v
|
||||
}
|
||||
h.Set("Sec-Websocket-Protocol", strings.Join(d.Subprotocols, ", "))
|
||||
requestHeader = h
|
||||
}
|
||||
|
||||
if len(requestHeader["Host"]) > 0 {
|
||||
// This can be used to supply a Host: header which is different from
|
||||
// the dial address.
|
||||
u.Host = requestHeader.Get("Host")
|
||||
|
||||
// Drop "Host" header
|
||||
h := http.Header{}
|
||||
for k, v := range requestHeader {
|
||||
if k == "Host" {
|
||||
continue
|
||||
}
|
||||
h[k] = v
|
||||
}
|
||||
requestHeader = h
|
||||
}
|
||||
|
||||
conn, resp, err := NewClient(netConn, u, requestHeader, d.ReadBufferSize, d.WriteBufferSize)
|
||||
|
||||
if err != nil {
|
||||
if err == ErrBadHandshake {
|
||||
// Before closing the network connection on return from this
|
||||
// function, slurp up some of the response to aid application
|
||||
// debugging.
|
||||
buf := make([]byte, 1024)
|
||||
n, _ := io.ReadFull(resp.Body, buf)
|
||||
resp.Body = ioutil.NopCloser(bytes.NewReader(buf[:n]))
|
||||
}
|
||||
return nil, resp, err
|
||||
}
|
||||
|
||||
netConn.SetDeadline(time.Time{})
|
||||
netConn = nil // to avoid close in defer.
|
||||
return conn, resp, nil
|
||||
}
|
||||
+323
@@ -0,0 +1,323 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"crypto/tls"
|
||||
"crypto/x509"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/http/httptest"
|
||||
"net/url"
|
||||
"reflect"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
var cstUpgrader = Upgrader{
|
||||
Subprotocols: []string{"p0", "p1"},
|
||||
ReadBufferSize: 1024,
|
||||
WriteBufferSize: 1024,
|
||||
Error: func(w http.ResponseWriter, r *http.Request, status int, reason error) {
|
||||
http.Error(w, reason.Error(), status)
|
||||
},
|
||||
}
|
||||
|
||||
var cstDialer = Dialer{
|
||||
Subprotocols: []string{"p1", "p2"},
|
||||
ReadBufferSize: 1024,
|
||||
WriteBufferSize: 1024,
|
||||
}
|
||||
|
||||
type cstHandler struct{ *testing.T }
|
||||
|
||||
type cstServer struct {
|
||||
*httptest.Server
|
||||
URL string
|
||||
}
|
||||
|
||||
func newServer(t *testing.T) *cstServer {
|
||||
var s cstServer
|
||||
s.Server = httptest.NewServer(cstHandler{t})
|
||||
s.URL = makeWsProto(s.Server.URL)
|
||||
return &s
|
||||
}
|
||||
|
||||
func newTLSServer(t *testing.T) *cstServer {
|
||||
var s cstServer
|
||||
s.Server = httptest.NewTLSServer(cstHandler{t})
|
||||
s.URL = makeWsProto(s.Server.URL)
|
||||
return &s
|
||||
}
|
||||
|
||||
func (t cstHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
||||
if r.Method != "GET" {
|
||||
t.Logf("method %s not allowed", r.Method)
|
||||
http.Error(w, "method not allowed", 405)
|
||||
return
|
||||
}
|
||||
subprotos := Subprotocols(r)
|
||||
if !reflect.DeepEqual(subprotos, cstDialer.Subprotocols) {
|
||||
t.Logf("subprotols=%v, want %v", subprotos, cstDialer.Subprotocols)
|
||||
http.Error(w, "bad protocol", 400)
|
||||
return
|
||||
}
|
||||
ws, err := cstUpgrader.Upgrade(w, r, http.Header{"Set-Cookie": {"sessionID=1234"}})
|
||||
if err != nil {
|
||||
t.Logf("Upgrade: %v", err)
|
||||
return
|
||||
}
|
||||
defer ws.Close()
|
||||
|
||||
if ws.Subprotocol() != "p1" {
|
||||
t.Logf("Subprotocol() = %s, want p1", ws.Subprotocol())
|
||||
ws.Close()
|
||||
return
|
||||
}
|
||||
op, rd, err := ws.NextReader()
|
||||
if err != nil {
|
||||
t.Logf("NextReader: %v", err)
|
||||
return
|
||||
}
|
||||
wr, err := ws.NextWriter(op)
|
||||
if err != nil {
|
||||
t.Logf("NextWriter: %v", err)
|
||||
return
|
||||
}
|
||||
if _, err = io.Copy(wr, rd); err != nil {
|
||||
t.Logf("NextWriter: %v", err)
|
||||
return
|
||||
}
|
||||
if err := wr.Close(); err != nil {
|
||||
t.Logf("Close: %v", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func makeWsProto(s string) string {
|
||||
return "ws" + strings.TrimPrefix(s, "http")
|
||||
}
|
||||
|
||||
func sendRecv(t *testing.T, ws *Conn) {
|
||||
const message = "Hello World!"
|
||||
if err := ws.SetWriteDeadline(time.Now().Add(time.Second)); err != nil {
|
||||
t.Fatalf("SetWriteDeadline: %v", err)
|
||||
}
|
||||
if err := ws.WriteMessage(TextMessage, []byte(message)); err != nil {
|
||||
t.Fatalf("WriteMessage: %v", err)
|
||||
}
|
||||
if err := ws.SetReadDeadline(time.Now().Add(time.Second)); err != nil {
|
||||
t.Fatalf("SetReadDeadline: %v", err)
|
||||
}
|
||||
_, p, err := ws.ReadMessage()
|
||||
if err != nil {
|
||||
t.Fatalf("ReadMessage: %v", err)
|
||||
}
|
||||
if string(p) != message {
|
||||
t.Fatalf("message=%s, want %s", p, message)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDial(t *testing.T) {
|
||||
s := newServer(t)
|
||||
defer s.Close()
|
||||
|
||||
ws, _, err := cstDialer.Dial(s.URL, nil)
|
||||
if err != nil {
|
||||
t.Fatalf("Dial: %v", err)
|
||||
}
|
||||
defer ws.Close()
|
||||
sendRecv(t, ws)
|
||||
}
|
||||
|
||||
func TestDialTLS(t *testing.T) {
|
||||
s := newTLSServer(t)
|
||||
defer s.Close()
|
||||
|
||||
certs := x509.NewCertPool()
|
||||
for _, c := range s.TLS.Certificates {
|
||||
roots, err := x509.ParseCertificates(c.Certificate[len(c.Certificate)-1])
|
||||
if err != nil {
|
||||
t.Fatalf("error parsing server's root cert: %v", err)
|
||||
}
|
||||
for _, root := range roots {
|
||||
certs.AddCert(root)
|
||||
}
|
||||
}
|
||||
|
||||
u, _ := url.Parse(s.URL)
|
||||
d := cstDialer
|
||||
d.NetDial = func(network, addr string) (net.Conn, error) { return net.Dial(network, u.Host) }
|
||||
d.TLSClientConfig = &tls.Config{RootCAs: certs}
|
||||
ws, _, err := d.Dial("wss://example.com/", nil)
|
||||
if err != nil {
|
||||
t.Fatalf("Dial: %v", err)
|
||||
}
|
||||
defer ws.Close()
|
||||
sendRecv(t, ws)
|
||||
}
|
||||
|
||||
func xTestDialTLSBadCert(t *testing.T) {
|
||||
// This test is deactivated because of noisy logging from the net/http package.
|
||||
s := newTLSServer(t)
|
||||
defer s.Close()
|
||||
|
||||
ws, _, err := cstDialer.Dial(s.URL, nil)
|
||||
if err == nil {
|
||||
ws.Close()
|
||||
t.Fatalf("Dial: nil")
|
||||
}
|
||||
}
|
||||
|
||||
func xTestDialTLSNoVerify(t *testing.T) {
|
||||
s := newTLSServer(t)
|
||||
defer s.Close()
|
||||
|
||||
d := cstDialer
|
||||
d.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
|
||||
ws, _, err := d.Dial(s.URL, nil)
|
||||
if err != nil {
|
||||
t.Fatalf("Dial: %v", err)
|
||||
}
|
||||
defer ws.Close()
|
||||
sendRecv(t, ws)
|
||||
}
|
||||
|
||||
func TestDialTimeout(t *testing.T) {
|
||||
s := newServer(t)
|
||||
defer s.Close()
|
||||
|
||||
d := cstDialer
|
||||
d.HandshakeTimeout = -1
|
||||
ws, _, err := d.Dial(s.URL, nil)
|
||||
if err == nil {
|
||||
ws.Close()
|
||||
t.Fatalf("Dial: nil")
|
||||
}
|
||||
}
|
||||
|
||||
func TestDialBadScheme(t *testing.T) {
|
||||
s := newServer(t)
|
||||
defer s.Close()
|
||||
|
||||
ws, _, err := cstDialer.Dial(s.Server.URL, nil)
|
||||
if err == nil {
|
||||
ws.Close()
|
||||
t.Fatalf("Dial: nil")
|
||||
}
|
||||
}
|
||||
|
||||
func TestDialBadOrigin(t *testing.T) {
|
||||
s := newServer(t)
|
||||
defer s.Close()
|
||||
|
||||
ws, resp, err := cstDialer.Dial(s.URL, http.Header{"Origin": {"bad"}})
|
||||
if err == nil {
|
||||
ws.Close()
|
||||
t.Fatalf("Dial: nil")
|
||||
}
|
||||
if resp == nil {
|
||||
t.Fatalf("resp=nil, err=%v", err)
|
||||
}
|
||||
if resp.StatusCode != http.StatusForbidden {
|
||||
t.Fatalf("status=%d, want %d", resp.StatusCode, http.StatusForbidden)
|
||||
}
|
||||
}
|
||||
|
||||
func TestHandshake(t *testing.T) {
|
||||
s := newServer(t)
|
||||
defer s.Close()
|
||||
|
||||
ws, resp, err := cstDialer.Dial(s.URL, http.Header{"Origin": {s.URL}})
|
||||
if err != nil {
|
||||
t.Fatalf("Dial: %v", err)
|
||||
}
|
||||
defer ws.Close()
|
||||
|
||||
var sessionID string
|
||||
for _, c := range resp.Cookies() {
|
||||
if c.Name == "sessionID" {
|
||||
sessionID = c.Value
|
||||
}
|
||||
}
|
||||
if sessionID != "1234" {
|
||||
t.Error("Set-Cookie not received from the server.")
|
||||
}
|
||||
|
||||
if ws.Subprotocol() != "p1" {
|
||||
t.Errorf("ws.Subprotocol() = %s, want p1", ws.Subprotocol())
|
||||
}
|
||||
sendRecv(t, ws)
|
||||
}
|
||||
|
||||
func TestRespOnBadHandshake(t *testing.T) {
|
||||
const expectedStatus = http.StatusGone
|
||||
const expectedBody = "This is the response body."
|
||||
|
||||
s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(expectedStatus)
|
||||
io.WriteString(w, expectedBody)
|
||||
}))
|
||||
defer s.Close()
|
||||
|
||||
ws, resp, err := cstDialer.Dial(makeWsProto(s.URL), nil)
|
||||
if err == nil {
|
||||
ws.Close()
|
||||
t.Fatalf("Dial: nil")
|
||||
}
|
||||
|
||||
if resp == nil {
|
||||
t.Fatalf("resp=nil, err=%v", err)
|
||||
}
|
||||
|
||||
if resp.StatusCode != expectedStatus {
|
||||
t.Errorf("resp.StatusCode=%d, want %d", resp.StatusCode, expectedStatus)
|
||||
}
|
||||
|
||||
p, err := ioutil.ReadAll(resp.Body)
|
||||
if err != nil {
|
||||
t.Fatalf("ReadFull(resp.Body) returned error %v", err)
|
||||
}
|
||||
|
||||
if string(p) != expectedBody {
|
||||
t.Errorf("resp.Body=%s, want %s", p, expectedBody)
|
||||
}
|
||||
}
|
||||
|
||||
// If the Host header is specified in `Dial()`, the server must receive it as
|
||||
// the `Host:` header.
|
||||
func TestHostHeader(t *testing.T) {
|
||||
s := newServer(t)
|
||||
defer s.Close()
|
||||
|
||||
specifiedHost := make(chan string, 1)
|
||||
origHandler := s.Server.Config.Handler
|
||||
|
||||
// Capture the request Host header.
|
||||
s.Server.Config.Handler = http.HandlerFunc(
|
||||
func(w http.ResponseWriter, r *http.Request) {
|
||||
specifiedHost <- r.Host
|
||||
origHandler.ServeHTTP(w, r)
|
||||
})
|
||||
|
||||
ws, resp, err := cstDialer.Dial(s.URL, http.Header{"Host": {"testhost"}})
|
||||
if err != nil {
|
||||
t.Fatalf("Dial: %v", err)
|
||||
}
|
||||
defer ws.Close()
|
||||
|
||||
if resp.StatusCode != http.StatusSwitchingProtocols {
|
||||
t.Fatalf("resp.StatusCode = %v, want http.StatusSwitchingProtocols", resp.StatusCode)
|
||||
}
|
||||
|
||||
if gotHost := <-specifiedHost; gotHost != "testhost" {
|
||||
t.Fatalf("gotHost = %q, want \"testhost\"", gotHost)
|
||||
}
|
||||
|
||||
sendRecv(t, ws)
|
||||
}
|
||||
+64
@@ -0,0 +1,64 @@
|
||||
// Copyright 2014 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"net/url"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
var parseURLTests = []struct {
|
||||
s string
|
||||
u *url.URL
|
||||
}{
|
||||
{"ws://example.com/", &url.URL{Scheme: "ws", Host: "example.com", Opaque: "/"}},
|
||||
{"ws://example.com", &url.URL{Scheme: "ws", Host: "example.com", Opaque: "/"}},
|
||||
{"ws://example.com:7777/", &url.URL{Scheme: "ws", Host: "example.com:7777", Opaque: "/"}},
|
||||
{"wss://example.com/", &url.URL{Scheme: "wss", Host: "example.com", Opaque: "/"}},
|
||||
{"wss://example.com/a/b", &url.URL{Scheme: "wss", Host: "example.com", Opaque: "/a/b"}},
|
||||
{"ss://example.com/a/b", nil},
|
||||
{"ws://[email protected]/", nil},
|
||||
}
|
||||
|
||||
func TestParseURL(t *testing.T) {
|
||||
for _, tt := range parseURLTests {
|
||||
u, err := parseURL(tt.s)
|
||||
if tt.u != nil && err != nil {
|
||||
t.Errorf("parseURL(%q) returned error %v", tt.s, err)
|
||||
continue
|
||||
}
|
||||
if tt.u == nil && err == nil {
|
||||
t.Errorf("parseURL(%q) did not return error", tt.s)
|
||||
continue
|
||||
}
|
||||
if !reflect.DeepEqual(u, tt.u) {
|
||||
t.Errorf("parseURL(%q) returned %v, want %v", tt.s, u, tt.u)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var hostPortNoPortTests = []struct {
|
||||
u *url.URL
|
||||
hostPort, hostNoPort string
|
||||
}{
|
||||
{&url.URL{Scheme: "ws", Host: "example.com"}, "example.com:80", "example.com"},
|
||||
{&url.URL{Scheme: "wss", Host: "example.com"}, "example.com:443", "example.com"},
|
||||
{&url.URL{Scheme: "ws", Host: "example.com:7777"}, "example.com:7777", "example.com"},
|
||||
{&url.URL{Scheme: "wss", Host: "example.com:7777"}, "example.com:7777", "example.com"},
|
||||
}
|
||||
|
||||
func TestHostPortNoPort(t *testing.T) {
|
||||
for _, tt := range hostPortNoPortTests {
|
||||
hostPort, hostNoPort := hostPortNoPort(tt.u)
|
||||
if hostPort != tt.hostPort {
|
||||
t.Errorf("hostPortNoPort(%v) returned hostPort %q, want %q", tt.u, hostPort, tt.hostPort)
|
||||
}
|
||||
if hostNoPort != tt.hostNoPort {
|
||||
t.Errorf("hostPortNoPort(%v) returned hostNoPort %q, want %q", tt.u, hostNoPort, tt.hostNoPort)
|
||||
}
|
||||
}
|
||||
}
|
||||
+825
@@ -0,0 +1,825 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"math/rand"
|
||||
"net"
|
||||
"strconv"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
maxFrameHeaderSize = 2 + 8 + 4 // Fixed header + length + mask
|
||||
maxControlFramePayloadSize = 125
|
||||
finalBit = 1 << 7
|
||||
maskBit = 1 << 7
|
||||
writeWait = time.Second
|
||||
|
||||
defaultReadBufferSize = 4096
|
||||
defaultWriteBufferSize = 4096
|
||||
|
||||
continuationFrame = 0
|
||||
noFrame = -1
|
||||
)
|
||||
|
||||
// Close codes defined in RFC 6455, section 11.7.
|
||||
const (
|
||||
CloseNormalClosure = 1000
|
||||
CloseGoingAway = 1001
|
||||
CloseProtocolError = 1002
|
||||
CloseUnsupportedData = 1003
|
||||
CloseNoStatusReceived = 1005
|
||||
CloseAbnormalClosure = 1006
|
||||
CloseInvalidFramePayloadData = 1007
|
||||
ClosePolicyViolation = 1008
|
||||
CloseMessageTooBig = 1009
|
||||
CloseMandatoryExtension = 1010
|
||||
CloseInternalServerErr = 1011
|
||||
CloseTLSHandshake = 1015
|
||||
)
|
||||
|
||||
// The message types are defined in RFC 6455, section 11.8.
|
||||
const (
|
||||
// TextMessage denotes a text data message. The text message payload is
|
||||
// interpreted as UTF-8 encoded text data.
|
||||
TextMessage = 1
|
||||
|
||||
// BinaryMessage denotes a binary data message.
|
||||
BinaryMessage = 2
|
||||
|
||||
// CloseMessage denotes a close control message. The optional message
|
||||
// payload contains a numeric code and text. Use the FormatCloseMessage
|
||||
// function to format a close message payload.
|
||||
CloseMessage = 8
|
||||
|
||||
// PingMessage denotes a ping control message. The optional message payload
|
||||
// is UTF-8 encoded text.
|
||||
PingMessage = 9
|
||||
|
||||
// PongMessage denotes a ping control message. The optional message payload
|
||||
// is UTF-8 encoded text.
|
||||
PongMessage = 10
|
||||
)
|
||||
|
||||
// ErrCloseSent is returned when the application writes a message to the
|
||||
// connection after sending a close message.
|
||||
var ErrCloseSent = errors.New("websocket: close sent")
|
||||
|
||||
// ErrReadLimit is returned when reading a message that is larger than the
|
||||
// read limit set for the connection.
|
||||
var ErrReadLimit = errors.New("websocket: read limit exceeded")
|
||||
|
||||
// netError satisfies the net Error interface.
|
||||
type netError struct {
|
||||
msg string
|
||||
temporary bool
|
||||
timeout bool
|
||||
}
|
||||
|
||||
func (e *netError) Error() string { return e.msg }
|
||||
func (e *netError) Temporary() bool { return e.temporary }
|
||||
func (e *netError) Timeout() bool { return e.timeout }
|
||||
|
||||
// closeError represents close frame.
|
||||
type closeError struct {
|
||||
code int
|
||||
text string
|
||||
}
|
||||
|
||||
func (e *closeError) Error() string {
|
||||
return "websocket: close " + strconv.Itoa(e.code) + " " + e.text
|
||||
}
|
||||
|
||||
var (
|
||||
errWriteTimeout = &netError{msg: "websocket: write timeout", timeout: true}
|
||||
errUnexpectedEOF = &closeError{code: CloseAbnormalClosure, text: io.ErrUnexpectedEOF.Error()}
|
||||
errBadWriteOpCode = errors.New("websocket: bad write message type")
|
||||
errWriteClosed = errors.New("websocket: write closed")
|
||||
errInvalidControlFrame = errors.New("websocket: invalid control frame")
|
||||
)
|
||||
|
||||
func hideTempErr(err error) error {
|
||||
if e, ok := err.(net.Error); ok && e.Temporary() {
|
||||
err = &netError{msg: e.Error(), timeout: e.Timeout()}
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
func isControl(frameType int) bool {
|
||||
return frameType == CloseMessage || frameType == PingMessage || frameType == PongMessage
|
||||
}
|
||||
|
||||
func isData(frameType int) bool {
|
||||
return frameType == TextMessage || frameType == BinaryMessage
|
||||
}
|
||||
|
||||
func maskBytes(key [4]byte, pos int, b []byte) int {
|
||||
for i := range b {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
return pos & 3
|
||||
}
|
||||
|
||||
func newMaskKey() [4]byte {
|
||||
n := rand.Uint32()
|
||||
return [4]byte{byte(n), byte(n >> 8), byte(n >> 16), byte(n >> 24)}
|
||||
}
|
||||
|
||||
// Conn represents a WebSocket connection.
|
||||
type Conn struct {
|
||||
conn net.Conn
|
||||
isServer bool
|
||||
subprotocol string
|
||||
|
||||
// Write fields
|
||||
mu chan bool // used as mutex to protect write to conn and closeSent
|
||||
closeSent bool // true if close message was sent
|
||||
|
||||
// Message writer fields.
|
||||
writeErr error
|
||||
writeBuf []byte // frame is constructed in this buffer.
|
||||
writePos int // end of data in writeBuf.
|
||||
writeFrameType int // type of the current frame.
|
||||
writeSeq int // incremented to invalidate message writers.
|
||||
writeDeadline time.Time
|
||||
|
||||
// Read fields
|
||||
readErr error
|
||||
br *bufio.Reader
|
||||
readRemaining int64 // bytes remaining in current frame.
|
||||
readFinal bool // true the current message has more frames.
|
||||
readSeq int // incremented to invalidate message readers.
|
||||
readLength int64 // Message size.
|
||||
readLimit int64 // Maximum message size.
|
||||
readMaskPos int
|
||||
readMaskKey [4]byte
|
||||
handlePong func(string) error
|
||||
handlePing func(string) error
|
||||
}
|
||||
|
||||
func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int) *Conn {
|
||||
mu := make(chan bool, 1)
|
||||
mu <- true
|
||||
|
||||
if readBufferSize == 0 {
|
||||
readBufferSize = defaultReadBufferSize
|
||||
}
|
||||
if writeBufferSize == 0 {
|
||||
writeBufferSize = defaultWriteBufferSize
|
||||
}
|
||||
|
||||
c := &Conn{
|
||||
isServer: isServer,
|
||||
br: bufio.NewReaderSize(conn, readBufferSize),
|
||||
conn: conn,
|
||||
mu: mu,
|
||||
readFinal: true,
|
||||
writeBuf: make([]byte, writeBufferSize+maxFrameHeaderSize),
|
||||
writeFrameType: noFrame,
|
||||
writePos: maxFrameHeaderSize,
|
||||
}
|
||||
c.SetPingHandler(nil)
|
||||
c.SetPongHandler(nil)
|
||||
return c
|
||||
}
|
||||
|
||||
// Subprotocol returns the negotiated protocol for the connection.
|
||||
func (c *Conn) Subprotocol() string {
|
||||
return c.subprotocol
|
||||
}
|
||||
|
||||
// Close closes the underlying network connection without sending or waiting for a close frame.
|
||||
func (c *Conn) Close() error {
|
||||
return c.conn.Close()
|
||||
}
|
||||
|
||||
// LocalAddr returns the local network address.
|
||||
func (c *Conn) LocalAddr() net.Addr {
|
||||
return c.conn.LocalAddr()
|
||||
}
|
||||
|
||||
// RemoteAddr returns the remote network address.
|
||||
func (c *Conn) RemoteAddr() net.Addr {
|
||||
return c.conn.RemoteAddr()
|
||||
}
|
||||
|
||||
// Write methods
|
||||
|
||||
func (c *Conn) write(frameType int, deadline time.Time, bufs ...[]byte) error {
|
||||
<-c.mu
|
||||
defer func() { c.mu <- true }()
|
||||
|
||||
if c.closeSent {
|
||||
return ErrCloseSent
|
||||
} else if frameType == CloseMessage {
|
||||
c.closeSent = true
|
||||
}
|
||||
|
||||
c.conn.SetWriteDeadline(deadline)
|
||||
for _, buf := range bufs {
|
||||
if len(buf) > 0 {
|
||||
n, err := c.conn.Write(buf)
|
||||
if n != len(buf) {
|
||||
// Close on partial write.
|
||||
c.conn.Close()
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// WriteControl writes a control message with the given deadline. The allowed
|
||||
// message types are CloseMessage, PingMessage and PongMessage.
|
||||
func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) error {
|
||||
if !isControl(messageType) {
|
||||
return errBadWriteOpCode
|
||||
}
|
||||
if len(data) > maxControlFramePayloadSize {
|
||||
return errInvalidControlFrame
|
||||
}
|
||||
|
||||
b0 := byte(messageType) | finalBit
|
||||
b1 := byte(len(data))
|
||||
if !c.isServer {
|
||||
b1 |= maskBit
|
||||
}
|
||||
|
||||
buf := make([]byte, 0, maxFrameHeaderSize+maxControlFramePayloadSize)
|
||||
buf = append(buf, b0, b1)
|
||||
|
||||
if c.isServer {
|
||||
buf = append(buf, data...)
|
||||
} else {
|
||||
key := newMaskKey()
|
||||
buf = append(buf, key[:]...)
|
||||
buf = append(buf, data...)
|
||||
maskBytes(key, 0, buf[6:])
|
||||
}
|
||||
|
||||
d := time.Hour * 1000
|
||||
if !deadline.IsZero() {
|
||||
d = deadline.Sub(time.Now())
|
||||
if d < 0 {
|
||||
return errWriteTimeout
|
||||
}
|
||||
}
|
||||
|
||||
timer := time.NewTimer(d)
|
||||
select {
|
||||
case <-c.mu:
|
||||
timer.Stop()
|
||||
case <-timer.C:
|
||||
return errWriteTimeout
|
||||
}
|
||||
defer func() { c.mu <- true }()
|
||||
|
||||
if c.closeSent {
|
||||
return ErrCloseSent
|
||||
} else if messageType == CloseMessage {
|
||||
c.closeSent = true
|
||||
}
|
||||
|
||||
c.conn.SetWriteDeadline(deadline)
|
||||
n, err := c.conn.Write(buf)
|
||||
if n != 0 && n != len(buf) {
|
||||
c.conn.Close()
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
// NextWriter returns a writer for the next message to send. The writer's
|
||||
// Close method flushes the complete message to the network.
|
||||
//
|
||||
// There can be at most one open writer on a connection. NextWriter closes the
|
||||
// previous writer if the application has not already done so.
|
||||
//
|
||||
// The NextWriter method and the writers returned from the method cannot be
|
||||
// accessed by more than one goroutine at a time.
|
||||
func (c *Conn) NextWriter(messageType int) (io.WriteCloser, error) {
|
||||
if c.writeErr != nil {
|
||||
return nil, c.writeErr
|
||||
}
|
||||
|
||||
if c.writeFrameType != noFrame {
|
||||
if err := c.flushFrame(true, nil); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if !isControl(messageType) && !isData(messageType) {
|
||||
return nil, errBadWriteOpCode
|
||||
}
|
||||
|
||||
c.writeFrameType = messageType
|
||||
return messageWriter{c, c.writeSeq}, nil
|
||||
}
|
||||
|
||||
func (c *Conn) flushFrame(final bool, extra []byte) error {
|
||||
length := c.writePos - maxFrameHeaderSize + len(extra)
|
||||
|
||||
// Check for invalid control frames.
|
||||
if isControl(c.writeFrameType) &&
|
||||
(!final || length > maxControlFramePayloadSize) {
|
||||
c.writeSeq++
|
||||
c.writeFrameType = noFrame
|
||||
c.writePos = maxFrameHeaderSize
|
||||
return errInvalidControlFrame
|
||||
}
|
||||
|
||||
b0 := byte(c.writeFrameType)
|
||||
if final {
|
||||
b0 |= finalBit
|
||||
}
|
||||
b1 := byte(0)
|
||||
if !c.isServer {
|
||||
b1 |= maskBit
|
||||
}
|
||||
|
||||
// Assume that the frame starts at beginning of c.writeBuf.
|
||||
framePos := 0
|
||||
if c.isServer {
|
||||
// Adjust up if mask not included in the header.
|
||||
framePos = 4
|
||||
}
|
||||
|
||||
switch {
|
||||
case length >= 65536:
|
||||
c.writeBuf[framePos] = b0
|
||||
c.writeBuf[framePos+1] = b1 | 127
|
||||
binary.BigEndian.PutUint64(c.writeBuf[framePos+2:], uint64(length))
|
||||
case length > 125:
|
||||
framePos += 6
|
||||
c.writeBuf[framePos] = b0
|
||||
c.writeBuf[framePos+1] = b1 | 126
|
||||
binary.BigEndian.PutUint16(c.writeBuf[framePos+2:], uint16(length))
|
||||
default:
|
||||
framePos += 8
|
||||
c.writeBuf[framePos] = b0
|
||||
c.writeBuf[framePos+1] = b1 | byte(length)
|
||||
}
|
||||
|
||||
if !c.isServer {
|
||||
key := newMaskKey()
|
||||
copy(c.writeBuf[maxFrameHeaderSize-4:], key[:])
|
||||
maskBytes(key, 0, c.writeBuf[maxFrameHeaderSize:c.writePos])
|
||||
if len(extra) > 0 {
|
||||
c.writeErr = errors.New("websocket: internal error, extra used in client mode")
|
||||
return c.writeErr
|
||||
}
|
||||
}
|
||||
|
||||
// Write the buffers to the connection.
|
||||
c.writeErr = c.write(c.writeFrameType, c.writeDeadline, c.writeBuf[framePos:c.writePos], extra)
|
||||
|
||||
// Setup for next frame.
|
||||
c.writePos = maxFrameHeaderSize
|
||||
c.writeFrameType = continuationFrame
|
||||
if final {
|
||||
c.writeSeq++
|
||||
c.writeFrameType = noFrame
|
||||
}
|
||||
return c.writeErr
|
||||
}
|
||||
|
||||
type messageWriter struct {
|
||||
c *Conn
|
||||
seq int
|
||||
}
|
||||
|
||||
func (w messageWriter) err() error {
|
||||
c := w.c
|
||||
if c.writeSeq != w.seq {
|
||||
return errWriteClosed
|
||||
}
|
||||
if c.writeErr != nil {
|
||||
return c.writeErr
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (w messageWriter) ncopy(max int) (int, error) {
|
||||
n := len(w.c.writeBuf) - w.c.writePos
|
||||
if n <= 0 {
|
||||
if err := w.c.flushFrame(false, nil); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
n = len(w.c.writeBuf) - w.c.writePos
|
||||
}
|
||||
if n > max {
|
||||
n = max
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func (w messageWriter) write(final bool, p []byte) (int, error) {
|
||||
if err := w.err(); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
if len(p) > 2*len(w.c.writeBuf) && w.c.isServer {
|
||||
// Don't buffer large messages.
|
||||
err := w.c.flushFrame(final, p)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
return len(p), nil
|
||||
}
|
||||
|
||||
nn := len(p)
|
||||
for len(p) > 0 {
|
||||
n, err := w.ncopy(len(p))
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
copy(w.c.writeBuf[w.c.writePos:], p[:n])
|
||||
w.c.writePos += n
|
||||
p = p[n:]
|
||||
}
|
||||
return nn, nil
|
||||
}
|
||||
|
||||
func (w messageWriter) Write(p []byte) (int, error) {
|
||||
return w.write(false, p)
|
||||
}
|
||||
|
||||
func (w messageWriter) WriteString(p string) (int, error) {
|
||||
if err := w.err(); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
nn := len(p)
|
||||
for len(p) > 0 {
|
||||
n, err := w.ncopy(len(p))
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
copy(w.c.writeBuf[w.c.writePos:], p[:n])
|
||||
w.c.writePos += n
|
||||
p = p[n:]
|
||||
}
|
||||
return nn, nil
|
||||
}
|
||||
|
||||
func (w messageWriter) ReadFrom(r io.Reader) (nn int64, err error) {
|
||||
if err := w.err(); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
for {
|
||||
if w.c.writePos == len(w.c.writeBuf) {
|
||||
err = w.c.flushFrame(false, nil)
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
var n int
|
||||
n, err = r.Read(w.c.writeBuf[w.c.writePos:])
|
||||
w.c.writePos += n
|
||||
nn += int64(n)
|
||||
if err != nil {
|
||||
if err == io.EOF {
|
||||
err = nil
|
||||
}
|
||||
break
|
||||
}
|
||||
}
|
||||
return nn, err
|
||||
}
|
||||
|
||||
func (w messageWriter) Close() error {
|
||||
if err := w.err(); err != nil {
|
||||
return err
|
||||
}
|
||||
return w.c.flushFrame(true, nil)
|
||||
}
|
||||
|
||||
// WriteMessage is a helper method for getting a writer using NextWriter,
|
||||
// writing the message and closing the writer.
|
||||
func (c *Conn) WriteMessage(messageType int, data []byte) error {
|
||||
wr, err := c.NextWriter(messageType)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
w := wr.(messageWriter)
|
||||
if _, err := w.write(true, data); err != nil {
|
||||
return err
|
||||
}
|
||||
if c.writeSeq == w.seq {
|
||||
if err := c.flushFrame(true, nil); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// SetWriteDeadline sets the write deadline on the underlying network
|
||||
// connection. After a write has timed out, the websocket state is corrupt and
|
||||
// all future writes will return an error. A zero value for t means writes will
|
||||
// not time out.
|
||||
func (c *Conn) SetWriteDeadline(t time.Time) error {
|
||||
c.writeDeadline = t
|
||||
return nil
|
||||
}
|
||||
|
||||
// Read methods
|
||||
|
||||
// readFull is like io.ReadFull except that io.EOF is never returned.
|
||||
func (c *Conn) readFull(p []byte) (err error) {
|
||||
var n int
|
||||
for n < len(p) && err == nil {
|
||||
var nn int
|
||||
nn, err = c.br.Read(p[n:])
|
||||
n += nn
|
||||
}
|
||||
if n == len(p) {
|
||||
err = nil
|
||||
} else if err == io.EOF {
|
||||
err = errUnexpectedEOF
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (c *Conn) advanceFrame() (int, error) {
|
||||
|
||||
// 1. Skip remainder of previous frame.
|
||||
|
||||
if c.readRemaining > 0 {
|
||||
if _, err := io.CopyN(ioutil.Discard, c.br, c.readRemaining); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
}
|
||||
|
||||
// 2. Read and parse first two bytes of frame header.
|
||||
|
||||
var b [8]byte
|
||||
if err := c.readFull(b[:2]); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
|
||||
final := b[0]&finalBit != 0
|
||||
frameType := int(b[0] & 0xf)
|
||||
reserved := int((b[0] >> 4) & 0x7)
|
||||
mask := b[1]&maskBit != 0
|
||||
c.readRemaining = int64(b[1] & 0x7f)
|
||||
|
||||
if reserved != 0 {
|
||||
return noFrame, c.handleProtocolError("unexpected reserved bits " + strconv.Itoa(reserved))
|
||||
}
|
||||
|
||||
switch frameType {
|
||||
case CloseMessage, PingMessage, PongMessage:
|
||||
if c.readRemaining > maxControlFramePayloadSize {
|
||||
return noFrame, c.handleProtocolError("control frame length > 125")
|
||||
}
|
||||
if !final {
|
||||
return noFrame, c.handleProtocolError("control frame not final")
|
||||
}
|
||||
case TextMessage, BinaryMessage:
|
||||
if !c.readFinal {
|
||||
return noFrame, c.handleProtocolError("message start before final message frame")
|
||||
}
|
||||
c.readFinal = final
|
||||
case continuationFrame:
|
||||
if c.readFinal {
|
||||
return noFrame, c.handleProtocolError("continuation after final message frame")
|
||||
}
|
||||
c.readFinal = final
|
||||
default:
|
||||
return noFrame, c.handleProtocolError("unknown opcode " + strconv.Itoa(frameType))
|
||||
}
|
||||
|
||||
// 3. Read and parse frame length.
|
||||
|
||||
switch c.readRemaining {
|
||||
case 126:
|
||||
if err := c.readFull(b[:2]); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
c.readRemaining = int64(binary.BigEndian.Uint16(b[:2]))
|
||||
case 127:
|
||||
if err := c.readFull(b[:8]); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
c.readRemaining = int64(binary.BigEndian.Uint64(b[:8]))
|
||||
}
|
||||
|
||||
// 4. Handle frame masking.
|
||||
|
||||
if mask != c.isServer {
|
||||
return noFrame, c.handleProtocolError("incorrect mask flag")
|
||||
}
|
||||
|
||||
if mask {
|
||||
c.readMaskPos = 0
|
||||
if err := c.readFull(c.readMaskKey[:]); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
}
|
||||
|
||||
// 5. For text and binary messages, enforce read limit and return.
|
||||
|
||||
if frameType == continuationFrame || frameType == TextMessage || frameType == BinaryMessage {
|
||||
|
||||
c.readLength += c.readRemaining
|
||||
if c.readLimit > 0 && c.readLength > c.readLimit {
|
||||
c.WriteControl(CloseMessage, FormatCloseMessage(CloseMessageTooBig, ""), time.Now().Add(writeWait))
|
||||
return noFrame, ErrReadLimit
|
||||
}
|
||||
|
||||
return frameType, nil
|
||||
}
|
||||
|
||||
// 6. Read control frame payload.
|
||||
|
||||
var payload []byte
|
||||
if c.readRemaining > 0 {
|
||||
payload = make([]byte, c.readRemaining)
|
||||
c.readRemaining = 0
|
||||
if err := c.readFull(payload); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
if c.isServer {
|
||||
maskBytes(c.readMaskKey, 0, payload)
|
||||
}
|
||||
}
|
||||
|
||||
// 7. Process control frame payload.
|
||||
|
||||
switch frameType {
|
||||
case PongMessage:
|
||||
if err := c.handlePong(string(payload)); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
case PingMessage:
|
||||
if err := c.handlePing(string(payload)); err != nil {
|
||||
return noFrame, err
|
||||
}
|
||||
case CloseMessage:
|
||||
c.WriteControl(CloseMessage, []byte{}, time.Now().Add(writeWait))
|
||||
closeCode := CloseNoStatusReceived
|
||||
closeText := ""
|
||||
if len(payload) >= 2 {
|
||||
closeCode = int(binary.BigEndian.Uint16(payload))
|
||||
closeText = string(payload[2:])
|
||||
}
|
||||
switch closeCode {
|
||||
case CloseNormalClosure, CloseGoingAway:
|
||||
return noFrame, io.EOF
|
||||
default:
|
||||
return noFrame, &closeError{code: closeCode, text: closeText}
|
||||
}
|
||||
}
|
||||
|
||||
return frameType, nil
|
||||
}
|
||||
|
||||
func (c *Conn) handleProtocolError(message string) error {
|
||||
c.WriteControl(CloseMessage, FormatCloseMessage(CloseProtocolError, message), time.Now().Add(writeWait))
|
||||
return errors.New("websocket: " + message)
|
||||
}
|
||||
|
||||
// NextReader returns the next data message received from the peer. The
|
||||
// returned messageType is either TextMessage or BinaryMessage.
|
||||
//
|
||||
// There can be at most one open reader on a connection. NextReader discards
|
||||
// the previous message if the application has not already consumed it.
|
||||
//
|
||||
// The NextReader method and the readers returned from the method cannot be
|
||||
// accessed by more than one goroutine at a time.
|
||||
func (c *Conn) NextReader() (messageType int, r io.Reader, err error) {
|
||||
|
||||
c.readSeq++
|
||||
c.readLength = 0
|
||||
|
||||
for c.readErr == nil {
|
||||
frameType, err := c.advanceFrame()
|
||||
if err != nil {
|
||||
c.readErr = hideTempErr(err)
|
||||
break
|
||||
}
|
||||
if frameType == TextMessage || frameType == BinaryMessage {
|
||||
return frameType, messageReader{c, c.readSeq}, nil
|
||||
}
|
||||
}
|
||||
return noFrame, nil, c.readErr
|
||||
}
|
||||
|
||||
type messageReader struct {
|
||||
c *Conn
|
||||
seq int
|
||||
}
|
||||
|
||||
func (r messageReader) Read(b []byte) (int, error) {
|
||||
|
||||
if r.seq != r.c.readSeq {
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
for r.c.readErr == nil {
|
||||
|
||||
if r.c.readRemaining > 0 {
|
||||
if int64(len(b)) > r.c.readRemaining {
|
||||
b = b[:r.c.readRemaining]
|
||||
}
|
||||
n, err := r.c.br.Read(b)
|
||||
r.c.readErr = hideTempErr(err)
|
||||
if r.c.isServer {
|
||||
r.c.readMaskPos = maskBytes(r.c.readMaskKey, r.c.readMaskPos, b[:n])
|
||||
}
|
||||
r.c.readRemaining -= int64(n)
|
||||
return n, r.c.readErr
|
||||
}
|
||||
|
||||
if r.c.readFinal {
|
||||
r.c.readSeq++
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
frameType, err := r.c.advanceFrame()
|
||||
switch {
|
||||
case err != nil:
|
||||
r.c.readErr = hideTempErr(err)
|
||||
case frameType == TextMessage || frameType == BinaryMessage:
|
||||
r.c.readErr = errors.New("websocket: internal error, unexpected text or binary in Reader")
|
||||
}
|
||||
}
|
||||
|
||||
err := r.c.readErr
|
||||
if err == io.EOF && r.seq == r.c.readSeq {
|
||||
err = errUnexpectedEOF
|
||||
}
|
||||
return 0, err
|
||||
}
|
||||
|
||||
// ReadMessage is a helper method for getting a reader using NextReader and
|
||||
// reading from that reader to a buffer.
|
||||
func (c *Conn) ReadMessage() (messageType int, p []byte, err error) {
|
||||
var r io.Reader
|
||||
messageType, r, err = c.NextReader()
|
||||
if err != nil {
|
||||
return messageType, nil, err
|
||||
}
|
||||
p, err = ioutil.ReadAll(r)
|
||||
return messageType, p, err
|
||||
}
|
||||
|
||||
// SetReadDeadline sets the read deadline on the underlying network connection.
|
||||
// After a read has timed out, the websocket connection state is corrupt and
|
||||
// all future reads will return an error. A zero value for t means reads will
|
||||
// not time out.
|
||||
func (c *Conn) SetReadDeadline(t time.Time) error {
|
||||
return c.conn.SetReadDeadline(t)
|
||||
}
|
||||
|
||||
// SetReadLimit sets the maximum size for a message read from the peer. If a
|
||||
// message exceeds the limit, the connection sends a close frame to the peer
|
||||
// and returns ErrReadLimit to the application.
|
||||
func (c *Conn) SetReadLimit(limit int64) {
|
||||
c.readLimit = limit
|
||||
}
|
||||
|
||||
// SetPingHandler sets the handler for ping messages received from the peer.
|
||||
// The default ping handler sends a pong to the peer.
|
||||
func (c *Conn) SetPingHandler(h func(string) error) {
|
||||
if h == nil {
|
||||
h = func(message string) error {
|
||||
c.WriteControl(PongMessage, []byte(message), time.Now().Add(writeWait))
|
||||
return nil
|
||||
}
|
||||
}
|
||||
c.handlePing = h
|
||||
}
|
||||
|
||||
// SetPongHandler sets the handler for pong messages received from the peer.
|
||||
// The default pong handler does nothing.
|
||||
func (c *Conn) SetPongHandler(h func(string) error) {
|
||||
if h == nil {
|
||||
h = func(string) error { return nil }
|
||||
}
|
||||
c.handlePong = h
|
||||
}
|
||||
|
||||
// UnderlyingConn returns the internal net.Conn. This can be used to further
|
||||
// modifications to connection specific flags.
|
||||
func (c *Conn) UnderlyingConn() net.Conn {
|
||||
return c.conn
|
||||
}
|
||||
|
||||
// FormatCloseMessage formats closeCode and text as a WebSocket close message.
|
||||
func FormatCloseMessage(closeCode int, text string) []byte {
|
||||
buf := make([]byte, 2+len(text))
|
||||
binary.BigEndian.PutUint16(buf, uint16(closeCode))
|
||||
copy(buf[2:], text)
|
||||
return buf
|
||||
}
|
||||
+238
@@ -0,0 +1,238 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"testing"
|
||||
"testing/iotest"
|
||||
"time"
|
||||
)
|
||||
|
||||
var _ net.Error = errWriteTimeout
|
||||
|
||||
type fakeNetConn struct {
|
||||
io.Reader
|
||||
io.Writer
|
||||
}
|
||||
|
||||
func (c fakeNetConn) Close() error { return nil }
|
||||
func (c fakeNetConn) LocalAddr() net.Addr { return nil }
|
||||
func (c fakeNetConn) RemoteAddr() net.Addr { return nil }
|
||||
func (c fakeNetConn) SetDeadline(t time.Time) error { return nil }
|
||||
func (c fakeNetConn) SetReadDeadline(t time.Time) error { return nil }
|
||||
func (c fakeNetConn) SetWriteDeadline(t time.Time) error { return nil }
|
||||
|
||||
func TestFraming(t *testing.T) {
|
||||
frameSizes := []int{0, 1, 2, 124, 125, 126, 127, 128, 129, 65534, 65535, 65536, 65537}
|
||||
var readChunkers = []struct {
|
||||
name string
|
||||
f func(io.Reader) io.Reader
|
||||
}{
|
||||
{"half", iotest.HalfReader},
|
||||
{"one", iotest.OneByteReader},
|
||||
{"asis", func(r io.Reader) io.Reader { return r }},
|
||||
}
|
||||
|
||||
writeBuf := make([]byte, 65537)
|
||||
for i := range writeBuf {
|
||||
writeBuf[i] = byte(i)
|
||||
}
|
||||
|
||||
for _, isServer := range []bool{true, false} {
|
||||
for _, chunker := range readChunkers {
|
||||
|
||||
var connBuf bytes.Buffer
|
||||
wc := newConn(fakeNetConn{Reader: nil, Writer: &connBuf}, isServer, 1024, 1024)
|
||||
rc := newConn(fakeNetConn{Reader: chunker.f(&connBuf), Writer: nil}, !isServer, 1024, 1024)
|
||||
|
||||
for _, n := range frameSizes {
|
||||
for _, iocopy := range []bool{true, false} {
|
||||
name := fmt.Sprintf("s:%v, r:%s, n:%d c:%v", isServer, chunker.name, n, iocopy)
|
||||
|
||||
w, err := wc.NextWriter(TextMessage)
|
||||
if err != nil {
|
||||
t.Errorf("%s: wc.NextWriter() returned %v", name, err)
|
||||
continue
|
||||
}
|
||||
var nn int
|
||||
if iocopy {
|
||||
var n64 int64
|
||||
n64, err = io.Copy(w, bytes.NewReader(writeBuf[:n]))
|
||||
nn = int(n64)
|
||||
} else {
|
||||
nn, err = w.Write(writeBuf[:n])
|
||||
}
|
||||
if err != nil || nn != n {
|
||||
t.Errorf("%s: w.Write(writeBuf[:n]) returned %d, %v", name, nn, err)
|
||||
continue
|
||||
}
|
||||
err = w.Close()
|
||||
if err != nil {
|
||||
t.Errorf("%s: w.Close() returned %v", name, err)
|
||||
continue
|
||||
}
|
||||
|
||||
opCode, r, err := rc.NextReader()
|
||||
if err != nil || opCode != TextMessage {
|
||||
t.Errorf("%s: NextReader() returned %d, r, %v", name, opCode, err)
|
||||
continue
|
||||
}
|
||||
rbuf, err := ioutil.ReadAll(r)
|
||||
if err != nil {
|
||||
t.Errorf("%s: ReadFull() returned rbuf, %v", name, err)
|
||||
continue
|
||||
}
|
||||
|
||||
if len(rbuf) != n {
|
||||
t.Errorf("%s: len(rbuf) is %d, want %d", name, len(rbuf), n)
|
||||
continue
|
||||
}
|
||||
|
||||
for i, b := range rbuf {
|
||||
if byte(i) != b {
|
||||
t.Errorf("%s: bad byte at offset %d", name, i)
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestControl(t *testing.T) {
|
||||
const message = "this is a ping/pong messsage"
|
||||
for _, isServer := range []bool{true, false} {
|
||||
for _, isWriteControl := range []bool{true, false} {
|
||||
name := fmt.Sprintf("s:%v, wc:%v", isServer, isWriteControl)
|
||||
var connBuf bytes.Buffer
|
||||
wc := newConn(fakeNetConn{Reader: nil, Writer: &connBuf}, isServer, 1024, 1024)
|
||||
rc := newConn(fakeNetConn{Reader: &connBuf, Writer: nil}, !isServer, 1024, 1024)
|
||||
if isWriteControl {
|
||||
wc.WriteControl(PongMessage, []byte(message), time.Now().Add(time.Second))
|
||||
} else {
|
||||
w, err := wc.NextWriter(PongMessage)
|
||||
if err != nil {
|
||||
t.Errorf("%s: wc.NextWriter() returned %v", name, err)
|
||||
continue
|
||||
}
|
||||
if _, err := w.Write([]byte(message)); err != nil {
|
||||
t.Errorf("%s: w.Write() returned %v", name, err)
|
||||
continue
|
||||
}
|
||||
if err := w.Close(); err != nil {
|
||||
t.Errorf("%s: w.Close() returned %v", name, err)
|
||||
continue
|
||||
}
|
||||
var actualMessage string
|
||||
rc.SetPongHandler(func(s string) error { actualMessage = s; return nil })
|
||||
rc.NextReader()
|
||||
if actualMessage != message {
|
||||
t.Errorf("%s: pong=%q, want %q", name, actualMessage, message)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestCloseBeforeFinalFrame(t *testing.T) {
|
||||
const bufSize = 512
|
||||
|
||||
var b1, b2 bytes.Buffer
|
||||
wc := newConn(fakeNetConn{Reader: nil, Writer: &b1}, false, 1024, bufSize)
|
||||
rc := newConn(fakeNetConn{Reader: &b1, Writer: &b2}, true, 1024, 1024)
|
||||
|
||||
w, _ := wc.NextWriter(BinaryMessage)
|
||||
w.Write(make([]byte, bufSize+bufSize/2))
|
||||
wc.WriteControl(CloseMessage, FormatCloseMessage(CloseNormalClosure, ""), time.Now().Add(10*time.Second))
|
||||
w.Close()
|
||||
|
||||
op, r, err := rc.NextReader()
|
||||
if op != BinaryMessage || err != nil {
|
||||
t.Fatalf("NextReader() returned %d, %v", op, err)
|
||||
}
|
||||
_, err = io.Copy(ioutil.Discard, r)
|
||||
if err != errUnexpectedEOF {
|
||||
t.Fatalf("io.Copy() returned %v, want %v", err, errUnexpectedEOF)
|
||||
}
|
||||
_, _, err = rc.NextReader()
|
||||
if err != io.EOF {
|
||||
t.Fatalf("NextReader() returned %v, want %v", err, io.EOF)
|
||||
}
|
||||
}
|
||||
|
||||
func TestEOFBeforeFinalFrame(t *testing.T) {
|
||||
const bufSize = 512
|
||||
|
||||
var b1, b2 bytes.Buffer
|
||||
wc := newConn(fakeNetConn{Reader: nil, Writer: &b1}, false, 1024, bufSize)
|
||||
rc := newConn(fakeNetConn{Reader: &b1, Writer: &b2}, true, 1024, 1024)
|
||||
|
||||
w, _ := wc.NextWriter(BinaryMessage)
|
||||
w.Write(make([]byte, bufSize+bufSize/2))
|
||||
|
||||
op, r, err := rc.NextReader()
|
||||
if op != BinaryMessage || err != nil {
|
||||
t.Fatalf("NextReader() returned %d, %v", op, err)
|
||||
}
|
||||
_, err = io.Copy(ioutil.Discard, r)
|
||||
if err != errUnexpectedEOF {
|
||||
t.Fatalf("io.Copy() returned %v, want %v", err, errUnexpectedEOF)
|
||||
}
|
||||
_, _, err = rc.NextReader()
|
||||
if err != errUnexpectedEOF {
|
||||
t.Fatalf("NextReader() returned %v, want %v", err, errUnexpectedEOF)
|
||||
}
|
||||
}
|
||||
|
||||
func TestReadLimit(t *testing.T) {
|
||||
|
||||
const readLimit = 512
|
||||
message := make([]byte, readLimit+1)
|
||||
|
||||
var b1, b2 bytes.Buffer
|
||||
wc := newConn(fakeNetConn{Reader: nil, Writer: &b1}, false, 1024, readLimit-2)
|
||||
rc := newConn(fakeNetConn{Reader: &b1, Writer: &b2}, true, 1024, 1024)
|
||||
rc.SetReadLimit(readLimit)
|
||||
|
||||
// Send message at the limit with interleaved pong.
|
||||
w, _ := wc.NextWriter(BinaryMessage)
|
||||
w.Write(message[:readLimit-1])
|
||||
wc.WriteControl(PongMessage, []byte("this is a pong"), time.Now().Add(10*time.Second))
|
||||
w.Write(message[:1])
|
||||
w.Close()
|
||||
|
||||
// Send message larger than the limit.
|
||||
wc.WriteMessage(BinaryMessage, message[:readLimit+1])
|
||||
|
||||
op, _, err := rc.NextReader()
|
||||
if op != BinaryMessage || err != nil {
|
||||
t.Fatalf("1: NextReader() returned %d, %v", op, err)
|
||||
}
|
||||
op, r, err := rc.NextReader()
|
||||
if op != BinaryMessage || err != nil {
|
||||
t.Fatalf("2: NextReader() returned %d, %v", op, err)
|
||||
}
|
||||
_, err = io.Copy(ioutil.Discard, r)
|
||||
if err != ErrReadLimit {
|
||||
t.Fatalf("io.Copy() returned %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestUnderlyingConn(t *testing.T) {
|
||||
var b1, b2 bytes.Buffer
|
||||
fc := fakeNetConn{Reader: &b1, Writer: &b2}
|
||||
c := newConn(fc, true, 1024, 1024)
|
||||
ul := c.UnderlyingConn()
|
||||
if ul != fc {
|
||||
t.Fatalf("Underlying conn is not what it should be.")
|
||||
}
|
||||
}
|
||||
+148
@@ -0,0 +1,148 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package websocket implements the WebSocket protocol defined in RFC 6455.
|
||||
//
|
||||
// Overview
|
||||
//
|
||||
// The Conn type represents a WebSocket connection. A server application uses
|
||||
// the Upgrade function from an Upgrader object with a HTTP request handler
|
||||
// to get a pointer to a Conn:
|
||||
//
|
||||
// var upgrader = websocket.Upgrader{
|
||||
// ReadBufferSize: 1024,
|
||||
// WriteBufferSize: 1024,
|
||||
// }
|
||||
//
|
||||
// func handler(w http.ResponseWriter, r *http.Request) {
|
||||
// conn, err := upgrader.Upgrade(w, r, nil)
|
||||
// if err != nil {
|
||||
// log.Println(err)
|
||||
// return
|
||||
// }
|
||||
// ... Use conn to send and receive messages.
|
||||
// }
|
||||
//
|
||||
// Call the connection's WriteMessage and ReadMessage methods to send and
|
||||
// receive messages as a slice of bytes. This snippet of code shows how to echo
|
||||
// messages using these methods:
|
||||
//
|
||||
// for {
|
||||
// messageType, p, err := conn.ReadMessage()
|
||||
// if err != nil {
|
||||
// return
|
||||
// }
|
||||
// if err = conn.WriteMessage(messageType, p); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// In above snippet of code, p is a []byte and messageType is an int with value
|
||||
// websocket.BinaryMessage or websocket.TextMessage.
|
||||
//
|
||||
// An application can also send and receive messages using the io.WriteCloser
|
||||
// and io.Reader interfaces. To send a message, call the connection NextWriter
|
||||
// method to get an io.WriteCloser, write the message to the writer and close
|
||||
// the writer when done. To receive a message, call the connection NextReader
|
||||
// method to get an io.Reader and read until io.EOF is returned. This snippet
|
||||
// snippet shows how to echo messages using the NextWriter and NextReader
|
||||
// methods:
|
||||
//
|
||||
// for {
|
||||
// messageType, r, err := conn.NextReader()
|
||||
// if err != nil {
|
||||
// return
|
||||
// }
|
||||
// w, err := conn.NextWriter(messageType)
|
||||
// if err != nil {
|
||||
// return err
|
||||
// }
|
||||
// if _, err := io.Copy(w, r); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// if err := w.Close(); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Data Messages
|
||||
//
|
||||
// The WebSocket protocol distinguishes between text and binary data messages.
|
||||
// Text messages are interpreted as UTF-8 encoded text. The interpretation of
|
||||
// binary messages is left to the application.
|
||||
//
|
||||
// This package uses the TextMessage and BinaryMessage integer constants to
|
||||
// identify the two data message types. The ReadMessage and NextReader methods
|
||||
// return the type of the received message. The messageType argument to the
|
||||
// WriteMessage and NextWriter methods specifies the type of a sent message.
|
||||
//
|
||||
// It is the application's responsibility to ensure that text messages are
|
||||
// valid UTF-8 encoded text.
|
||||
//
|
||||
// Control Messages
|
||||
//
|
||||
// The WebSocket protocol defines three types of control messages: close, ping
|
||||
// and pong. Call the connection WriteControl, WriteMessage or NextWriter
|
||||
// methods to send a control message to the peer.
|
||||
//
|
||||
// Connections handle received ping and pong messages by invoking a callback
|
||||
// function set with SetPingHandler and SetPongHandler methods. These callback
|
||||
// functions can be invoked from the ReadMessage method, the NextReader method
|
||||
// or from a call to the data message reader returned from NextReader.
|
||||
//
|
||||
// Connections handle received close messages by returning an error from the
|
||||
// ReadMessage method, the NextReader method or from a call to the data message
|
||||
// reader returned from NextReader.
|
||||
//
|
||||
// Concurrency
|
||||
//
|
||||
// Connections do not support concurrent calls to the write methods
|
||||
// (NextWriter, SetWriteDeadline, WriteMessage) or concurrent calls to the read
|
||||
// methods methods (NextReader, SetReadDeadline, ReadMessage). Connections do
|
||||
// support a concurrent reader and writer.
|
||||
//
|
||||
// The Close and WriteControl methods can be called concurrently with all other
|
||||
// methods.
|
||||
//
|
||||
// Read is Required
|
||||
//
|
||||
// The application must read the connection to process ping and close messages
|
||||
// sent from the peer. If the application is not otherwise interested in
|
||||
// messages from the peer, then the application should start a goroutine to read
|
||||
// and discard messages from the peer. A simple example is:
|
||||
//
|
||||
// func readLoop(c *websocket.Conn) {
|
||||
// for {
|
||||
// if _, _, err := c.NextReader(); err != nil {
|
||||
// c.Close()
|
||||
// break
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Origin Considerations
|
||||
//
|
||||
// Web browsers allow Javascript applications to open a WebSocket connection to
|
||||
// any host. It's up to the server to enforce an origin policy using the Origin
|
||||
// request header sent by the browser.
|
||||
//
|
||||
// The Upgrader calls the function specified in the CheckOrigin field to check
|
||||
// the origin. If the CheckOrigin function returns false, then the Upgrade
|
||||
// method fails the WebSocket handshake with HTTP status 403.
|
||||
//
|
||||
// If the CheckOrigin field is nil, then the Upgrader uses a safe default: fail
|
||||
// the handshake if the Origin request header is present and not equal to the
|
||||
// Host request header.
|
||||
//
|
||||
// An application can allow connections from any origin by specifying a
|
||||
// function that always returns true:
|
||||
//
|
||||
// var upgrader = websocket.Upgrader{
|
||||
// CheckOrigin: func(r *http.Request) bool { return true },
|
||||
// }
|
||||
//
|
||||
// The deprecated Upgrade function does not enforce an origin policy. It's the
|
||||
// application's responsibility to check the Origin header before calling
|
||||
// Upgrade.
|
||||
package websocket
|
||||
+13
@@ -0,0 +1,13 @@
|
||||
# Test Server
|
||||
|
||||
This package contains a server for the [Autobahn WebSockets Test Suite](http://autobahn.ws/testsuite).
|
||||
|
||||
To test the server, run
|
||||
|
||||
go run server.go
|
||||
|
||||
and start the client test driver
|
||||
|
||||
wstest -m fuzzingclient -s fuzzingclient.json
|
||||
|
||||
When the client completes, it writes a report to reports/clients/index.html.
|
||||
Generated
Vendored
Executable
+14
@@ -0,0 +1,14 @@
|
||||
|
||||
{
|
||||
"options": {"failByDrop": false},
|
||||
"outdir": "./reports/clients",
|
||||
"servers": [
|
||||
{"agent": "ReadAllWriteMessage", "url": "ws://localhost:9000/m", "options": {"version": 18}},
|
||||
{"agent": "ReadAllWrite", "url": "ws://localhost:9000/r", "options": {"version": 18}},
|
||||
{"agent": "CopyFull", "url": "ws://localhost:9000/f", "options": {"version": 18}},
|
||||
{"agent": "CopyWriterOnly", "url": "ws://localhost:9000/c", "options": {"version": 18}}
|
||||
],
|
||||
"cases": ["*"],
|
||||
"exclude-cases": [],
|
||||
"exclude-agent-cases": {}
|
||||
}
|
||||
+246
@@ -0,0 +1,246 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Command server is a test server for the Autobahn WebSockets Test Suite.
|
||||
package main
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"flag"
|
||||
"github.com/gorilla/websocket"
|
||||
"io"
|
||||
"log"
|
||||
"net/http"
|
||||
"time"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
var upgrader = websocket.Upgrader{
|
||||
ReadBufferSize: 4096,
|
||||
WriteBufferSize: 4096,
|
||||
CheckOrigin: func(r *http.Request) bool {
|
||||
return true
|
||||
},
|
||||
}
|
||||
|
||||
// echoCopy echoes messages from the client using io.Copy.
|
||||
func echoCopy(w http.ResponseWriter, r *http.Request, writerOnly bool) {
|
||||
conn, err := upgrader.Upgrade(w, r, nil)
|
||||
if err != nil {
|
||||
log.Println("Upgrade:", err)
|
||||
return
|
||||
}
|
||||
defer conn.Close()
|
||||
for {
|
||||
mt, r, err := conn.NextReader()
|
||||
if err != nil {
|
||||
if err != io.EOF {
|
||||
log.Println("NextReader:", err)
|
||||
}
|
||||
return
|
||||
}
|
||||
if mt == websocket.TextMessage {
|
||||
r = &validator{r: r}
|
||||
}
|
||||
w, err := conn.NextWriter(mt)
|
||||
if err != nil {
|
||||
log.Println("NextWriter:", err)
|
||||
return
|
||||
}
|
||||
if mt == websocket.TextMessage {
|
||||
r = &validator{r: r}
|
||||
}
|
||||
if writerOnly {
|
||||
_, err = io.Copy(struct{ io.Writer }{w}, r)
|
||||
} else {
|
||||
_, err = io.Copy(w, r)
|
||||
}
|
||||
if err != nil {
|
||||
if err == errInvalidUTF8 {
|
||||
conn.WriteControl(websocket.CloseMessage,
|
||||
websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
|
||||
time.Time{})
|
||||
}
|
||||
log.Println("Copy:", err)
|
||||
return
|
||||
}
|
||||
err = w.Close()
|
||||
if err != nil {
|
||||
log.Println("Close:", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func echoCopyWriterOnly(w http.ResponseWriter, r *http.Request) {
|
||||
echoCopy(w, r, true)
|
||||
}
|
||||
|
||||
func echoCopyFull(w http.ResponseWriter, r *http.Request) {
|
||||
echoCopy(w, r, false)
|
||||
}
|
||||
|
||||
// echoReadAll echoes messages from the client by reading the entire message
|
||||
// with ioutil.ReadAll.
|
||||
func echoReadAll(w http.ResponseWriter, r *http.Request, writeMessage bool) {
|
||||
conn, err := upgrader.Upgrade(w, r, nil)
|
||||
if err != nil {
|
||||
log.Println("Upgrade:", err)
|
||||
return
|
||||
}
|
||||
defer conn.Close()
|
||||
for {
|
||||
mt, b, err := conn.ReadMessage()
|
||||
if err != nil {
|
||||
if err != io.EOF {
|
||||
log.Println("NextReader:", err)
|
||||
}
|
||||
return
|
||||
}
|
||||
if mt == websocket.TextMessage {
|
||||
if !utf8.Valid(b) {
|
||||
conn.WriteControl(websocket.CloseMessage,
|
||||
websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
|
||||
time.Time{})
|
||||
log.Println("ReadAll: invalid utf8")
|
||||
}
|
||||
}
|
||||
if writeMessage {
|
||||
err = conn.WriteMessage(mt, b)
|
||||
if err != nil {
|
||||
log.Println("WriteMessage:", err)
|
||||
}
|
||||
} else {
|
||||
w, err := conn.NextWriter(mt)
|
||||
if err != nil {
|
||||
log.Println("NextWriter:", err)
|
||||
return
|
||||
}
|
||||
if _, err := w.Write(b); err != nil {
|
||||
log.Println("Writer:", err)
|
||||
return
|
||||
}
|
||||
if err := w.Close(); err != nil {
|
||||
log.Println("Close:", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func echoReadAllWriter(w http.ResponseWriter, r *http.Request) {
|
||||
echoReadAll(w, r, false)
|
||||
}
|
||||
|
||||
func echoReadAllWriteMessage(w http.ResponseWriter, r *http.Request) {
|
||||
echoReadAll(w, r, true)
|
||||
}
|
||||
|
||||
func serveHome(w http.ResponseWriter, r *http.Request) {
|
||||
if r.URL.Path != "/" {
|
||||
http.Error(w, "Not found.", 404)
|
||||
return
|
||||
}
|
||||
if r.Method != "GET" {
|
||||
http.Error(w, "Method not allowed", 405)
|
||||
return
|
||||
}
|
||||
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
||||
io.WriteString(w, "<html><body>Echo Server</body></html>")
|
||||
}
|
||||
|
||||
var addr = flag.String("addr", ":9000", "http service address")
|
||||
|
||||
func main() {
|
||||
flag.Parse()
|
||||
http.HandleFunc("/", serveHome)
|
||||
http.HandleFunc("/c", echoCopyWriterOnly)
|
||||
http.HandleFunc("/f", echoCopyFull)
|
||||
http.HandleFunc("/r", echoReadAllWriter)
|
||||
http.HandleFunc("/m", echoReadAllWriteMessage)
|
||||
err := http.ListenAndServe(*addr, nil)
|
||||
if err != nil {
|
||||
log.Fatal("ListenAndServe: ", err)
|
||||
}
|
||||
}
|
||||
|
||||
type validator struct {
|
||||
state int
|
||||
x rune
|
||||
r io.Reader
|
||||
}
|
||||
|
||||
var errInvalidUTF8 = errors.New("invalid utf8")
|
||||
|
||||
func (r *validator) Read(p []byte) (int, error) {
|
||||
n, err := r.r.Read(p)
|
||||
state := r.state
|
||||
x := r.x
|
||||
for _, b := range p[:n] {
|
||||
state, x = decode(state, x, b)
|
||||
if state == utf8Reject {
|
||||
break
|
||||
}
|
||||
}
|
||||
r.state = state
|
||||
r.x = x
|
||||
if state == utf8Reject || (err == io.EOF && state != utf8Accept) {
|
||||
return n, errInvalidUTF8
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
// UTF-8 decoder from http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
|
||||
//
|
||||
// Copyright (c) 2008-2009 Bjoern Hoehrmann <[email protected]>
|
||||
//
|
||||
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
// of this software and associated documentation files (the "Software"), to
|
||||
// deal in the Software without restriction, including without limitation the
|
||||
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
||||
// sell copies of the Software, and to permit persons to whom the Software is
|
||||
// furnished to do so, subject to the following conditions:
|
||||
//
|
||||
// The above copyright notice and this permission notice shall be included in
|
||||
// all copies or substantial portions of the Software.
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||||
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
||||
// IN THE SOFTWARE.
|
||||
var utf8d = [...]byte{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1f
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3f
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5f
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7f
|
||||
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9f
|
||||
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // a0..bf
|
||||
8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // c0..df
|
||||
0xa, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // e0..ef
|
||||
0xb, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // f0..ff
|
||||
0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
|
||||
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
|
||||
1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
|
||||
1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
|
||||
1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // s7..s8
|
||||
}
|
||||
|
||||
const (
|
||||
utf8Accept = 0
|
||||
utf8Reject = 1
|
||||
)
|
||||
|
||||
func decode(state int, x rune, b byte) (int, rune) {
|
||||
t := utf8d[b]
|
||||
if state != utf8Accept {
|
||||
x = rune(b&0x3f) | (x << 6)
|
||||
} else {
|
||||
x = rune((0xff >> t) & b)
|
||||
}
|
||||
state = int(utf8d[256+state*16+int(t)])
|
||||
return state, x
|
||||
}
|
||||
+19
@@ -0,0 +1,19 @@
|
||||
# Chat Example
|
||||
|
||||
This application shows how to use use the
|
||||
[websocket](https://github.com/gorilla/websocket) package and
|
||||
[jQuery](http://jquery.com) to implement a simple web chat application.
|
||||
|
||||
## Running the example
|
||||
|
||||
The example requires a working Go development environment. The [Getting
|
||||
Started](http://golang.org/doc/install) page describes how to install the
|
||||
development environment.
|
||||
|
||||
Once you have Go up and running, you can download, build and run the example
|
||||
using the following commands.
|
||||
|
||||
$ go get github.com/gorilla/websocket
|
||||
$ cd `go list -f '{{.Dir}}' github.com/gorilla/websocket/examples/chat`
|
||||
$ go run *.go
|
||||
|
||||
+106
@@ -0,0 +1,106 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/gorilla/websocket"
|
||||
"log"
|
||||
"net/http"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
// Time allowed to write a message to the peer.
|
||||
writeWait = 10 * time.Second
|
||||
|
||||
// Time allowed to read the next pong message from the peer.
|
||||
pongWait = 60 * time.Second
|
||||
|
||||
// Send pings to peer with this period. Must be less than pongWait.
|
||||
pingPeriod = (pongWait * 9) / 10
|
||||
|
||||
// Maximum message size allowed from peer.
|
||||
maxMessageSize = 512
|
||||
)
|
||||
|
||||
var upgrader = websocket.Upgrader{
|
||||
ReadBufferSize: 1024,
|
||||
WriteBufferSize: 1024,
|
||||
}
|
||||
|
||||
// connection is an middleman between the websocket connection and the hub.
|
||||
type connection struct {
|
||||
// The websocket connection.
|
||||
ws *websocket.Conn
|
||||
|
||||
// Buffered channel of outbound messages.
|
||||
send chan []byte
|
||||
}
|
||||
|
||||
// readPump pumps messages from the websocket connection to the hub.
|
||||
func (c *connection) readPump() {
|
||||
defer func() {
|
||||
h.unregister <- c
|
||||
c.ws.Close()
|
||||
}()
|
||||
c.ws.SetReadLimit(maxMessageSize)
|
||||
c.ws.SetReadDeadline(time.Now().Add(pongWait))
|
||||
c.ws.SetPongHandler(func(string) error { c.ws.SetReadDeadline(time.Now().Add(pongWait)); return nil })
|
||||
for {
|
||||
_, message, err := c.ws.ReadMessage()
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
h.broadcast <- message
|
||||
}
|
||||
}
|
||||
|
||||
// write writes a message with the given message type and payload.
|
||||
func (c *connection) write(mt int, payload []byte) error {
|
||||
c.ws.SetWriteDeadline(time.Now().Add(writeWait))
|
||||
return c.ws.WriteMessage(mt, payload)
|
||||
}
|
||||
|
||||
// writePump pumps messages from the hub to the websocket connection.
|
||||
func (c *connection) writePump() {
|
||||
ticker := time.NewTicker(pingPeriod)
|
||||
defer func() {
|
||||
ticker.Stop()
|
||||
c.ws.Close()
|
||||
}()
|
||||
for {
|
||||
select {
|
||||
case message, ok := <-c.send:
|
||||
if !ok {
|
||||
c.write(websocket.CloseMessage, []byte{})
|
||||
return
|
||||
}
|
||||
if err := c.write(websocket.TextMessage, message); err != nil {
|
||||
return
|
||||
}
|
||||
case <-ticker.C:
|
||||
if err := c.write(websocket.PingMessage, []byte{}); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// serverWs handles websocket requests from the peer.
|
||||
func serveWs(w http.ResponseWriter, r *http.Request) {
|
||||
if r.Method != "GET" {
|
||||
http.Error(w, "Method not allowed", 405)
|
||||
return
|
||||
}
|
||||
ws, err := upgrader.Upgrade(w, r, nil)
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
return
|
||||
}
|
||||
c := &connection{send: make(chan []byte, 256), ws: ws}
|
||||
h.register <- c
|
||||
go c.writePump()
|
||||
c.readPump()
|
||||
}
|
||||
+92
@@ -0,0 +1,92 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<title>Chat Example</title>
|
||||
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
|
||||
<script type="text/javascript">
|
||||
$(function() {
|
||||
|
||||
var conn;
|
||||
var msg = $("#msg");
|
||||
var log = $("#log");
|
||||
|
||||
function appendLog(msg) {
|
||||
var d = log[0]
|
||||
var doScroll = d.scrollTop == d.scrollHeight - d.clientHeight;
|
||||
msg.appendTo(log)
|
||||
if (doScroll) {
|
||||
d.scrollTop = d.scrollHeight - d.clientHeight;
|
||||
}
|
||||
}
|
||||
|
||||
$("#form").submit(function() {
|
||||
if (!conn) {
|
||||
return false;
|
||||
}
|
||||
if (!msg.val()) {
|
||||
return false;
|
||||
}
|
||||
conn.send(msg.val());
|
||||
msg.val("");
|
||||
return false
|
||||
});
|
||||
|
||||
if (window["WebSocket"]) {
|
||||
conn = new WebSocket("ws://{{$}}/ws");
|
||||
conn.onclose = function(evt) {
|
||||
appendLog($("<div><b>Connection closed.</b></div>"))
|
||||
}
|
||||
conn.onmessage = function(evt) {
|
||||
appendLog($("<div/>").text(evt.data))
|
||||
}
|
||||
} else {
|
||||
appendLog($("<div><b>Your browser does not support WebSockets.</b></div>"))
|
||||
}
|
||||
});
|
||||
</script>
|
||||
<style type="text/css">
|
||||
html {
|
||||
overflow: hidden;
|
||||
}
|
||||
|
||||
body {
|
||||
overflow: hidden;
|
||||
padding: 0;
|
||||
margin: 0;
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
background: gray;
|
||||
}
|
||||
|
||||
#log {
|
||||
background: white;
|
||||
margin: 0;
|
||||
padding: 0.5em 0.5em 0.5em 0.5em;
|
||||
position: absolute;
|
||||
top: 0.5em;
|
||||
left: 0.5em;
|
||||
right: 0.5em;
|
||||
bottom: 3em;
|
||||
overflow: auto;
|
||||
}
|
||||
|
||||
#form {
|
||||
padding: 0 0.5em 0 0.5em;
|
||||
margin: 0;
|
||||
position: absolute;
|
||||
bottom: 1em;
|
||||
left: 0px;
|
||||
width: 100%;
|
||||
overflow: hidden;
|
||||
}
|
||||
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div id="log"></div>
|
||||
<form id="form">
|
||||
<input type="submit" value="Send" />
|
||||
<input type="text" id="msg" size="64"/>
|
||||
</form>
|
||||
</body>
|
||||
</html>
|
||||
+51
@@ -0,0 +1,51 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package main
|
||||
|
||||
// hub maintains the set of active connections and broadcasts messages to the
|
||||
// connections.
|
||||
type hub struct {
|
||||
// Registered connections.
|
||||
connections map[*connection]bool
|
||||
|
||||
// Inbound messages from the connections.
|
||||
broadcast chan []byte
|
||||
|
||||
// Register requests from the connections.
|
||||
register chan *connection
|
||||
|
||||
// Unregister requests from connections.
|
||||
unregister chan *connection
|
||||
}
|
||||
|
||||
var h = hub{
|
||||
broadcast: make(chan []byte),
|
||||
register: make(chan *connection),
|
||||
unregister: make(chan *connection),
|
||||
connections: make(map[*connection]bool),
|
||||
}
|
||||
|
||||
func (h *hub) run() {
|
||||
for {
|
||||
select {
|
||||
case c := <-h.register:
|
||||
h.connections[c] = true
|
||||
case c := <-h.unregister:
|
||||
if _, ok := h.connections[c]; ok {
|
||||
delete(h.connections, c)
|
||||
close(c.send)
|
||||
}
|
||||
case m := <-h.broadcast:
|
||||
for c := range h.connections {
|
||||
select {
|
||||
case c.send <- m:
|
||||
default:
|
||||
close(c.send)
|
||||
delete(h.connections, c)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
+39
@@ -0,0 +1,39 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"log"
|
||||
"net/http"
|
||||
"text/template"
|
||||
)
|
||||
|
||||
var addr = flag.String("addr", ":8080", "http service address")
|
||||
var homeTempl = template.Must(template.ParseFiles("home.html"))
|
||||
|
||||
func serveHome(w http.ResponseWriter, r *http.Request) {
|
||||
if r.URL.Path != "/" {
|
||||
http.Error(w, "Not found", 404)
|
||||
return
|
||||
}
|
||||
if r.Method != "GET" {
|
||||
http.Error(w, "Method not allowed", 405)
|
||||
return
|
||||
}
|
||||
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
||||
homeTempl.Execute(w, r.Host)
|
||||
}
|
||||
|
||||
func main() {
|
||||
flag.Parse()
|
||||
go h.run()
|
||||
http.HandleFunc("/", serveHome)
|
||||
http.HandleFunc("/ws", serveWs)
|
||||
err := http.ListenAndServe(*addr, nil)
|
||||
if err != nil {
|
||||
log.Fatal("ListenAndServe: ", err)
|
||||
}
|
||||
}
|
||||
+9
@@ -0,0 +1,9 @@
|
||||
# File Watch example.
|
||||
|
||||
This example sends a file to the browser client for display whenever the file is modified.
|
||||
|
||||
$ go get github.com/gorilla/websocket
|
||||
$ cd `go list -f '{{.Dir}}' github.com/gorilla/websocket/examples/filewatch`
|
||||
$ go run main.go <name of file to watch>
|
||||
# Open http://localhost:8080/ .
|
||||
# Modify the file to see it update in the browser.
|
||||
+193
@@ -0,0 +1,193 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"net/http"
|
||||
"os"
|
||||
"strconv"
|
||||
"text/template"
|
||||
"time"
|
||||
|
||||
"github.com/gorilla/websocket"
|
||||
)
|
||||
|
||||
const (
|
||||
// Time allowed to write the file to the client.
|
||||
writeWait = 10 * time.Second
|
||||
|
||||
// Time allowed to read the next pong message from the client.
|
||||
pongWait = 60 * time.Second
|
||||
|
||||
// Send pings to client with this period. Must be less than pongWait.
|
||||
pingPeriod = (pongWait * 9) / 10
|
||||
|
||||
// Poll file for changes with this period.
|
||||
filePeriod = 10 * time.Second
|
||||
)
|
||||
|
||||
var (
|
||||
addr = flag.String("addr", ":8080", "http service address")
|
||||
homeTempl = template.Must(template.New("").Parse(homeHTML))
|
||||
filename string
|
||||
upgrader = websocket.Upgrader{
|
||||
ReadBufferSize: 1024,
|
||||
WriteBufferSize: 1024,
|
||||
}
|
||||
)
|
||||
|
||||
func readFileIfModified(lastMod time.Time) ([]byte, time.Time, error) {
|
||||
fi, err := os.Stat(filename)
|
||||
if err != nil {
|
||||
return nil, lastMod, err
|
||||
}
|
||||
if !fi.ModTime().After(lastMod) {
|
||||
return nil, lastMod, nil
|
||||
}
|
||||
p, err := ioutil.ReadFile(filename)
|
||||
if err != nil {
|
||||
return nil, fi.ModTime(), err
|
||||
}
|
||||
return p, fi.ModTime(), nil
|
||||
}
|
||||
|
||||
func reader(ws *websocket.Conn) {
|
||||
defer ws.Close()
|
||||
ws.SetReadLimit(512)
|
||||
ws.SetReadDeadline(time.Now().Add(pongWait))
|
||||
ws.SetPongHandler(func(string) error { ws.SetReadDeadline(time.Now().Add(pongWait)); return nil })
|
||||
for {
|
||||
_, _, err := ws.ReadMessage()
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func writer(ws *websocket.Conn, lastMod time.Time) {
|
||||
lastError := ""
|
||||
pingTicker := time.NewTicker(pingPeriod)
|
||||
fileTicker := time.NewTicker(filePeriod)
|
||||
defer func() {
|
||||
pingTicker.Stop()
|
||||
fileTicker.Stop()
|
||||
ws.Close()
|
||||
}()
|
||||
for {
|
||||
select {
|
||||
case <-fileTicker.C:
|
||||
var p []byte
|
||||
var err error
|
||||
|
||||
p, lastMod, err = readFileIfModified(lastMod)
|
||||
|
||||
if err != nil {
|
||||
if s := err.Error(); s != lastError {
|
||||
lastError = s
|
||||
p = []byte(lastError)
|
||||
}
|
||||
} else {
|
||||
lastError = ""
|
||||
}
|
||||
|
||||
if p != nil {
|
||||
ws.SetWriteDeadline(time.Now().Add(writeWait))
|
||||
if err := ws.WriteMessage(websocket.TextMessage, p); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
case <-pingTicker.C:
|
||||
ws.SetWriteDeadline(time.Now().Add(writeWait))
|
||||
if err := ws.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func serveWs(w http.ResponseWriter, r *http.Request) {
|
||||
ws, err := upgrader.Upgrade(w, r, nil)
|
||||
if err != nil {
|
||||
if _, ok := err.(websocket.HandshakeError); !ok {
|
||||
log.Println(err)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
var lastMod time.Time
|
||||
if n, err := strconv.ParseInt(r.FormValue("lastMod"), 16, 64); err != nil {
|
||||
lastMod = time.Unix(0, n)
|
||||
}
|
||||
|
||||
go writer(ws, lastMod)
|
||||
reader(ws)
|
||||
}
|
||||
|
||||
func serveHome(w http.ResponseWriter, r *http.Request) {
|
||||
if r.URL.Path != "/" {
|
||||
http.Error(w, "Not found", 404)
|
||||
return
|
||||
}
|
||||
if r.Method != "GET" {
|
||||
http.Error(w, "Method not allowed", 405)
|
||||
return
|
||||
}
|
||||
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
||||
p, lastMod, err := readFileIfModified(time.Time{})
|
||||
if err != nil {
|
||||
p = []byte(err.Error())
|
||||
lastMod = time.Unix(0, 0)
|
||||
}
|
||||
var v = struct {
|
||||
Host string
|
||||
Data string
|
||||
LastMod string
|
||||
}{
|
||||
r.Host,
|
||||
string(p),
|
||||
strconv.FormatInt(lastMod.UnixNano(), 16),
|
||||
}
|
||||
homeTempl.Execute(w, &v)
|
||||
}
|
||||
|
||||
func main() {
|
||||
flag.Parse()
|
||||
if flag.NArg() != 1 {
|
||||
log.Fatal("filename not specified")
|
||||
}
|
||||
filename = flag.Args()[0]
|
||||
http.HandleFunc("/", serveHome)
|
||||
http.HandleFunc("/ws", serveWs)
|
||||
if err := http.ListenAndServe(*addr, nil); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
const homeHTML = `<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<title>WebSocket Example</title>
|
||||
</head>
|
||||
<body>
|
||||
<pre id="fileData">{{.Data}}</pre>
|
||||
<script type="text/javascript">
|
||||
(function() {
|
||||
var data = document.getElementById("fileData");
|
||||
var conn = new WebSocket("ws://{{.Host}}/ws?lastMod={{.LastMod}}");
|
||||
conn.onclose = function(evt) {
|
||||
data.textContent = 'Connection closed';
|
||||
}
|
||||
conn.onmessage = function(evt) {
|
||||
console.log('file updated');
|
||||
data.textContent = evt.data;
|
||||
}
|
||||
})();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
`
|
||||
+57
@@ -0,0 +1,57 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"io"
|
||||
)
|
||||
|
||||
// WriteJSON is deprecated, use c.WriteJSON instead.
|
||||
func WriteJSON(c *Conn, v interface{}) error {
|
||||
return c.WriteJSON(v)
|
||||
}
|
||||
|
||||
// WriteJSON writes the JSON encoding of v to the connection.
|
||||
//
|
||||
// See the documentation for encoding/json Marshal for details about the
|
||||
// conversion of Go values to JSON.
|
||||
func (c *Conn) WriteJSON(v interface{}) error {
|
||||
w, err := c.NextWriter(TextMessage)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err1 := json.NewEncoder(w).Encode(v)
|
||||
err2 := w.Close()
|
||||
if err1 != nil {
|
||||
return err1
|
||||
}
|
||||
return err2
|
||||
}
|
||||
|
||||
// ReadJSON is deprecated, use c.ReadJSON instead.
|
||||
func ReadJSON(c *Conn, v interface{}) error {
|
||||
return c.ReadJSON(v)
|
||||
}
|
||||
|
||||
// ReadJSON reads the next JSON-encoded message from the connection and stores
|
||||
// it in the value pointed to by v.
|
||||
//
|
||||
// See the documentation for the encoding/json Unmarshal function for details
|
||||
// about the conversion of JSON to a Go value.
|
||||
func (c *Conn) ReadJSON(v interface{}) error {
|
||||
_, r, err := c.NextReader()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = json.NewDecoder(r).Decode(v)
|
||||
if err == io.EOF {
|
||||
// Decode returns io.EOF when the message is empty or all whitespace.
|
||||
// Convert to io.ErrUnexpectedEOF so that application can distinguish
|
||||
// between an error reading the JSON value and the connection closing.
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
return err
|
||||
}
|
||||
+119
@@ -0,0 +1,119 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/json"
|
||||
"io"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestJSON(t *testing.T) {
|
||||
var buf bytes.Buffer
|
||||
c := fakeNetConn{&buf, &buf}
|
||||
wc := newConn(c, true, 1024, 1024)
|
||||
rc := newConn(c, false, 1024, 1024)
|
||||
|
||||
var actual, expect struct {
|
||||
A int
|
||||
B string
|
||||
}
|
||||
expect.A = 1
|
||||
expect.B = "hello"
|
||||
|
||||
if err := wc.WriteJSON(&expect); err != nil {
|
||||
t.Fatal("write", err)
|
||||
}
|
||||
|
||||
if err := rc.ReadJSON(&actual); err != nil {
|
||||
t.Fatal("read", err)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(&actual, &expect) {
|
||||
t.Fatal("equal", actual, expect)
|
||||
}
|
||||
}
|
||||
|
||||
func TestPartialJsonRead(t *testing.T) {
|
||||
var buf bytes.Buffer
|
||||
c := fakeNetConn{&buf, &buf}
|
||||
wc := newConn(c, true, 1024, 1024)
|
||||
rc := newConn(c, false, 1024, 1024)
|
||||
|
||||
var v struct {
|
||||
A int
|
||||
B string
|
||||
}
|
||||
v.A = 1
|
||||
v.B = "hello"
|
||||
|
||||
messageCount := 0
|
||||
|
||||
// Partial JSON values.
|
||||
|
||||
data, err := json.Marshal(v)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for i := len(data) - 1; i >= 0; i-- {
|
||||
if err := wc.WriteMessage(TextMessage, data[:i]); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
messageCount++
|
||||
}
|
||||
|
||||
// Whitespace.
|
||||
|
||||
if err := wc.WriteMessage(TextMessage, []byte(" ")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
messageCount++
|
||||
|
||||
// Close.
|
||||
|
||||
if err := wc.WriteMessage(CloseMessage, FormatCloseMessage(CloseNormalClosure, "")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for i := 0; i < messageCount; i++ {
|
||||
err := rc.ReadJSON(&v)
|
||||
if err != io.ErrUnexpectedEOF {
|
||||
t.Error("read", i, err)
|
||||
}
|
||||
}
|
||||
|
||||
err = rc.ReadJSON(&v)
|
||||
if err != io.EOF {
|
||||
t.Error("final", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDeprecatedJSON(t *testing.T) {
|
||||
var buf bytes.Buffer
|
||||
c := fakeNetConn{&buf, &buf}
|
||||
wc := newConn(c, true, 1024, 1024)
|
||||
rc := newConn(c, false, 1024, 1024)
|
||||
|
||||
var actual, expect struct {
|
||||
A int
|
||||
B string
|
||||
}
|
||||
expect.A = 1
|
||||
expect.B = "hello"
|
||||
|
||||
if err := WriteJSON(wc, &expect); err != nil {
|
||||
t.Fatal("write", err)
|
||||
}
|
||||
|
||||
if err := ReadJSON(rc, &actual); err != nil {
|
||||
t.Fatal("read", err)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(&actual, &expect) {
|
||||
t.Fatal("equal", actual, expect)
|
||||
}
|
||||
}
|
||||
+247
@@ -0,0 +1,247 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"errors"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// HandshakeError describes an error with the handshake from the peer.
|
||||
type HandshakeError struct {
|
||||
message string
|
||||
}
|
||||
|
||||
func (e HandshakeError) Error() string { return e.message }
|
||||
|
||||
// Upgrader specifies parameters for upgrading an HTTP connection to a
|
||||
// WebSocket connection.
|
||||
type Upgrader struct {
|
||||
// HandshakeTimeout specifies the duration for the handshake to complete.
|
||||
HandshakeTimeout time.Duration
|
||||
|
||||
// ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
|
||||
// size is zero, then a default value of 4096 is used. The I/O buffer sizes
|
||||
// do not limit the size of the messages that can be sent or received.
|
||||
ReadBufferSize, WriteBufferSize int
|
||||
|
||||
// Subprotocols specifies the server's supported protocols in order of
|
||||
// preference. If this field is set, then the Upgrade method negotiates a
|
||||
// subprotocol by selecting the first match in this list with a protocol
|
||||
// requested by the client.
|
||||
Subprotocols []string
|
||||
|
||||
// Error specifies the function for generating HTTP error responses. If Error
|
||||
// is nil, then http.Error is used to generate the HTTP response.
|
||||
Error func(w http.ResponseWriter, r *http.Request, status int, reason error)
|
||||
|
||||
// CheckOrigin returns true if the request Origin header is acceptable. If
|
||||
// CheckOrigin is nil, the host in the Origin header must not be set or
|
||||
// must match the host of the request.
|
||||
CheckOrigin func(r *http.Request) bool
|
||||
}
|
||||
|
||||
func (u *Upgrader) returnError(w http.ResponseWriter, r *http.Request, status int, reason string) (*Conn, error) {
|
||||
err := HandshakeError{reason}
|
||||
if u.Error != nil {
|
||||
u.Error(w, r, status, err)
|
||||
} else {
|
||||
http.Error(w, http.StatusText(status), status)
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// checkSameOrigin returns true if the origin is not set or is equal to the request host.
|
||||
func checkSameOrigin(r *http.Request) bool {
|
||||
origin := r.Header["Origin"]
|
||||
if len(origin) == 0 {
|
||||
return true
|
||||
}
|
||||
u, err := url.Parse(origin[0])
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
return u.Host == r.Host
|
||||
}
|
||||
|
||||
func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
|
||||
if u.Subprotocols != nil {
|
||||
clientProtocols := Subprotocols(r)
|
||||
for _, serverProtocol := range u.Subprotocols {
|
||||
for _, clientProtocol := range clientProtocols {
|
||||
if clientProtocol == serverProtocol {
|
||||
return clientProtocol
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if responseHeader != nil {
|
||||
return responseHeader.Get("Sec-Websocket-Protocol")
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
|
||||
//
|
||||
// The responseHeader is included in the response to the client's upgrade
|
||||
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
|
||||
// application negotiated subprotocol (Sec-Websocket-Protocol).
|
||||
func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*Conn, error) {
|
||||
if values := r.Header["Sec-Websocket-Version"]; len(values) == 0 || values[0] != "13" {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: version != 13")
|
||||
}
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Connection", "upgrade") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: could not find connection header with token 'upgrade'")
|
||||
}
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Upgrade", "websocket") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: could not find upgrade header with token 'websocket'")
|
||||
}
|
||||
|
||||
checkOrigin := u.CheckOrigin
|
||||
if checkOrigin == nil {
|
||||
checkOrigin = checkSameOrigin
|
||||
}
|
||||
if !checkOrigin(r) {
|
||||
return u.returnError(w, r, http.StatusForbidden, "websocket: origin not allowed")
|
||||
}
|
||||
|
||||
challengeKey := r.Header.Get("Sec-Websocket-Key")
|
||||
if challengeKey == "" {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: key missing or blank")
|
||||
}
|
||||
|
||||
subprotocol := u.selectSubprotocol(r, responseHeader)
|
||||
|
||||
var (
|
||||
netConn net.Conn
|
||||
br *bufio.Reader
|
||||
err error
|
||||
)
|
||||
|
||||
h, ok := w.(http.Hijacker)
|
||||
if !ok {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
|
||||
}
|
||||
var rw *bufio.ReadWriter
|
||||
netConn, rw, err = h.Hijack()
|
||||
if err != nil {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, err.Error())
|
||||
}
|
||||
br = rw.Reader
|
||||
|
||||
if br.Buffered() > 0 {
|
||||
netConn.Close()
|
||||
return nil, errors.New("websocket: client sent data before handshake is complete")
|
||||
}
|
||||
|
||||
c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize)
|
||||
c.subprotocol = subprotocol
|
||||
|
||||
p := c.writeBuf[:0]
|
||||
p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
|
||||
p = append(p, computeAcceptKey(challengeKey)...)
|
||||
p = append(p, "\r\n"...)
|
||||
if c.subprotocol != "" {
|
||||
p = append(p, "Sec-Websocket-Protocol: "...)
|
||||
p = append(p, c.subprotocol...)
|
||||
p = append(p, "\r\n"...)
|
||||
}
|
||||
for k, vs := range responseHeader {
|
||||
if k == "Sec-Websocket-Protocol" {
|
||||
continue
|
||||
}
|
||||
for _, v := range vs {
|
||||
p = append(p, k...)
|
||||
p = append(p, ": "...)
|
||||
for i := 0; i < len(v); i++ {
|
||||
b := v[i]
|
||||
if b <= 31 {
|
||||
// prevent response splitting.
|
||||
b = ' '
|
||||
}
|
||||
p = append(p, b)
|
||||
}
|
||||
p = append(p, "\r\n"...)
|
||||
}
|
||||
}
|
||||
p = append(p, "\r\n"...)
|
||||
|
||||
// Clear deadlines set by HTTP server.
|
||||
netConn.SetDeadline(time.Time{})
|
||||
|
||||
if u.HandshakeTimeout > 0 {
|
||||
netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout))
|
||||
}
|
||||
if _, err = netConn.Write(p); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
if u.HandshakeTimeout > 0 {
|
||||
netConn.SetWriteDeadline(time.Time{})
|
||||
}
|
||||
|
||||
return c, nil
|
||||
}
|
||||
|
||||
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
|
||||
//
|
||||
// This function is deprecated, use websocket.Upgrader instead.
|
||||
//
|
||||
// The application is responsible for checking the request origin before
|
||||
// calling Upgrade. An example implementation of the same origin policy is:
|
||||
//
|
||||
// if req.Header.Get("Origin") != "http://"+req.Host {
|
||||
// http.Error(w, "Origin not allowed", 403)
|
||||
// return
|
||||
// }
|
||||
//
|
||||
// If the endpoint supports subprotocols, then the application is responsible
|
||||
// for negotiating the protocol used on the connection. Use the Subprotocols()
|
||||
// function to get the subprotocols requested by the client. Use the
|
||||
// Sec-Websocket-Protocol response header to specify the subprotocol selected
|
||||
// by the application.
|
||||
//
|
||||
// The responseHeader is included in the response to the client's upgrade
|
||||
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
|
||||
// negotiated subprotocol (Sec-Websocket-Protocol).
|
||||
//
|
||||
// The connection buffers IO to the underlying network connection. The
|
||||
// readBufSize and writeBufSize parameters specify the size of the buffers to
|
||||
// use. Messages can be larger than the buffers.
|
||||
//
|
||||
// If the request is not a valid WebSocket handshake, then Upgrade returns an
|
||||
// error of type HandshakeError. Applications should handle this error by
|
||||
// replying to the client with an HTTP error response.
|
||||
func Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header, readBufSize, writeBufSize int) (*Conn, error) {
|
||||
u := Upgrader{ReadBufferSize: readBufSize, WriteBufferSize: writeBufSize}
|
||||
u.Error = func(w http.ResponseWriter, r *http.Request, status int, reason error) {
|
||||
// don't return errors to maintain backwards compatibility
|
||||
}
|
||||
u.CheckOrigin = func(r *http.Request) bool {
|
||||
// allow all connections by default
|
||||
return true
|
||||
}
|
||||
return u.Upgrade(w, r, responseHeader)
|
||||
}
|
||||
|
||||
// Subprotocols returns the subprotocols requested by the client in the
|
||||
// Sec-Websocket-Protocol header.
|
||||
func Subprotocols(r *http.Request) []string {
|
||||
h := strings.TrimSpace(r.Header.Get("Sec-Websocket-Protocol"))
|
||||
if h == "" {
|
||||
return nil
|
||||
}
|
||||
protocols := strings.Split(h, ",")
|
||||
for i := range protocols {
|
||||
protocols[i] = strings.TrimSpace(protocols[i])
|
||||
}
|
||||
return protocols
|
||||
}
|
||||
+33
@@ -0,0 +1,33 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
var subprotocolTests = []struct {
|
||||
h string
|
||||
protocols []string
|
||||
}{
|
||||
{"", nil},
|
||||
{"foo", []string{"foo"}},
|
||||
{"foo,bar", []string{"foo", "bar"}},
|
||||
{"foo, bar", []string{"foo", "bar"}},
|
||||
{" foo, bar", []string{"foo", "bar"}},
|
||||
{" foo, bar ", []string{"foo", "bar"}},
|
||||
}
|
||||
|
||||
func TestSubprotocols(t *testing.T) {
|
||||
for _, st := range subprotocolTests {
|
||||
r := http.Request{Header: http.Header{"Sec-Websocket-Protocol": {st.h}}}
|
||||
protocols := Subprotocols(&r)
|
||||
if !reflect.DeepEqual(st.protocols, protocols) {
|
||||
t.Errorf("SubProtocols(%q) returned %#v, want %#v", st.h, protocols, st.protocols)
|
||||
}
|
||||
}
|
||||
}
|
||||
+44
@@ -0,0 +1,44 @@
|
||||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"crypto/sha1"
|
||||
"encoding/base64"
|
||||
"io"
|
||||
"net/http"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// tokenListContainsValue returns true if the 1#token header with the given
|
||||
// name contains token.
|
||||
func tokenListContainsValue(header http.Header, name string, value string) bool {
|
||||
for _, v := range header[name] {
|
||||
for _, s := range strings.Split(v, ",") {
|
||||
if strings.EqualFold(value, strings.TrimSpace(s)) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
|
||||
|
||||
func computeAcceptKey(challengeKey string) string {
|
||||
h := sha1.New()
|
||||
h.Write([]byte(challengeKey))
|
||||
h.Write(keyGUID)
|
||||
return base64.StdEncoding.EncodeToString(h.Sum(nil))
|
||||
}
|
||||
|
||||
func generateChallengeKey() (string, error) {
|
||||
p := make([]byte, 16)
|
||||
if _, err := io.ReadFull(rand.Reader, p); err != nil {
|
||||
return "", err
|
||||
}
|
||||
return base64.StdEncoding.EncodeToString(p), nil
|
||||
}
|
||||
+34
@@ -0,0 +1,34 @@
|
||||
// Copyright 2014 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"testing"
|
||||
)
|
||||
|
||||
var tokenListContainsValueTests = []struct {
|
||||
value string
|
||||
ok bool
|
||||
}{
|
||||
{"WebSocket", true},
|
||||
{"WEBSOCKET", true},
|
||||
{"websocket", true},
|
||||
{"websockets", false},
|
||||
{"x websocket", false},
|
||||
{"websocket x", false},
|
||||
{"other,websocket,more", true},
|
||||
{"other, websocket, more", true},
|
||||
}
|
||||
|
||||
func TestTokenListContainsValue(t *testing.T) {
|
||||
for _, tt := range tokenListContainsValueTests {
|
||||
h := http.Header{"Upgrade": {tt.value}}
|
||||
ok := tokenListContainsValue(h, "Upgrade", "websocket")
|
||||
if ok != tt.ok {
|
||||
t.Errorf("tokenListContainsValue(h, n, %q) = %v, want %v", tt.value, ok, tt.ok)
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user