chore(example): update guides to 0.1-beta.1 (#198)

* update routeguide

* update helloworld

* depend on tonic beta.1

* Apply suggestions from code review

Co-Authored-By: Lucio Franco <[email protected]>

Co-authored-by: Lucio Franco <[email protected]>

examples/src/helloworld/client.rs

@@ -1,9 +1,10 @@
+use hello_world::greeter_client::GreeterClient;
+use hello_world::HelloRequest;
+
 pub mod hello_world {
     tonic::include_proto!("helloworld");
 }
 
-use hello_world::{greeter_client::GreeterClient, HelloRequest};
-
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let mut client = GreeterClient::connect("http://[::1]:50051").await?;

examples/src/helloworld/server.rs

@@ -1,14 +1,12 @@
 use tonic::{transport::Server, Request, Response, Status};
 
+use hello_world::greeter_server::{Greeter, GreeterServer};
+use hello_world::{HelloReply, HelloRequest};
+
 pub mod hello_world {
     tonic::include_proto!("helloworld");
 }
 
-use hello_world::{
-    greeter_server::{Greeter, GreeterServer},
-    HelloReply, HelloRequest,
-};
-
 #[derive(Default)]
 pub struct MyGreeter {}
 
@@ -32,6 +30,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let addr = "[::1]:50051".parse().unwrap();
     let greeter = MyGreeter::default();
 
+    println!("GreeterServer listening on {}", addr);
+
     Server::builder()
         .add_service(GreeterServer::new(greeter))
         .serve(addr)