Managing vendor dependencies with glide
This commit is contained in:
+118
-28
@@ -88,19 +88,82 @@ func (e *netError) Error() string { return e.msg }
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func (e *netError) Temporary() bool { return e.temporary }
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func (e *netError) Timeout() bool { return e.timeout }
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// closeError represents close frame.
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type closeError struct {
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code int
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text string
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// CloseError represents close frame.
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type CloseError struct {
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// Code is defined in RFC 6455, section 11.7.
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Code int
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// Text is the optional text payload.
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Text string
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}
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func (e *closeError) Error() string {
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return "websocket: close " + strconv.Itoa(e.code) + " " + e.text
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func (e *CloseError) Error() string {
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s := []byte("websocket: close ")
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s = strconv.AppendInt(s, int64(e.Code), 10)
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switch e.Code {
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case CloseNormalClosure:
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s = append(s, " (normal)"...)
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case CloseGoingAway:
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s = append(s, " (going away)"...)
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case CloseProtocolError:
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s = append(s, " (protocol error)"...)
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case CloseUnsupportedData:
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s = append(s, " (unsupported data)"...)
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case CloseNoStatusReceived:
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s = append(s, " (no status)"...)
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case CloseAbnormalClosure:
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s = append(s, " (abnormal closure)"...)
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case CloseInvalidFramePayloadData:
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s = append(s, " (invalid payload data)"...)
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case ClosePolicyViolation:
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s = append(s, " (policy violation)"...)
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case CloseMessageTooBig:
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s = append(s, " (message too big)"...)
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case CloseMandatoryExtension:
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s = append(s, " (mandatory extension missing)"...)
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case CloseInternalServerErr:
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s = append(s, " (internal server error)"...)
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case CloseTLSHandshake:
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s = append(s, " (TLS handshake error)"...)
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}
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if e.Text != "" {
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s = append(s, ": "...)
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s = append(s, e.Text...)
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}
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return string(s)
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}
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// IsCloseError returns boolean indicating whether the error is a *CloseError
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// with one of the specified codes.
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func IsCloseError(err error, codes ...int) bool {
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if e, ok := err.(*CloseError); ok {
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for _, code := range codes {
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if e.Code == code {
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return true
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}
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}
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}
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return false
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}
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// IsUnexpectedCloseError returns boolean indicating whether the error is a
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// *CloseError with a code not in the list of expected codes.
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func IsUnexpectedCloseError(err error, expectedCodes ...int) bool {
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if e, ok := err.(*CloseError); ok {
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for _, code := range expectedCodes {
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if e.Code == code {
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return false
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}
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}
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return true
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}
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return false
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}
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var (
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errWriteTimeout = &netError{msg: "websocket: write timeout", timeout: true}
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errUnexpectedEOF = &closeError{code: CloseAbnormalClosure, text: io.ErrUnexpectedEOF.Error()}
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errWriteTimeout = &netError{msg: "websocket: write timeout", timeout: true, temporary: true}
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errUnexpectedEOF = &CloseError{Code: CloseAbnormalClosure, Text: io.ErrUnexpectedEOF.Error()}
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errBadWriteOpCode = errors.New("websocket: bad write message type")
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errWriteClosed = errors.New("websocket: write closed")
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errInvalidControlFrame = errors.New("websocket: invalid control frame")
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@@ -151,6 +214,7 @@ type Conn struct {
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writeFrameType int // type of the current frame.
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writeSeq int // incremented to invalidate message writers.
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writeDeadline time.Time
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isWriting bool // for best-effort concurrent write detection
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// Read fields
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readErr error
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@@ -164,6 +228,7 @@ type Conn struct {
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readMaskKey [4]byte
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handlePong func(string) error
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handlePing func(string) error
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readErrCount int
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}
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func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int) *Conn {
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@@ -296,7 +361,7 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
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if n != 0 && n != len(buf) {
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c.conn.Close()
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}
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return err
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return hideTempErr(err)
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}
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// NextWriter returns a writer for the next message to send. The writer's
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@@ -304,9 +369,6 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
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//
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// There can be at most one open writer on a connection. NextWriter closes the
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// previous writer if the application has not already done so.
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//
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// The NextWriter method and the writers returned from the method cannot be
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// accessed by more than one goroutine at a time.
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func (c *Conn) NextWriter(messageType int) (io.WriteCloser, error) {
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if c.writeErr != nil {
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return nil, c.writeErr
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@@ -380,9 +442,22 @@ func (c *Conn) flushFrame(final bool, extra []byte) error {
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}
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}
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// Write the buffers to the connection.
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// Write the buffers to the connection with best-effort detection of
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// concurrent writes. See the concurrency section in the package
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// documentation for more info.
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if c.isWriting {
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panic("concurrent write to websocket connection")
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}
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c.isWriting = true
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c.writeErr = c.write(c.writeFrameType, c.writeDeadline, c.writeBuf[framePos:c.writePos], extra)
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if !c.isWriting {
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panic("concurrent write to websocket connection")
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}
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c.isWriting = false
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// Setup for next frame.
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c.writePos = maxFrameHeaderSize
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c.writeFrameType = continuationFrame
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@@ -666,19 +741,16 @@ func (c *Conn) advanceFrame() (int, error) {
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return noFrame, err
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}
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case CloseMessage:
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c.WriteControl(CloseMessage, []byte{}, time.Now().Add(writeWait))
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echoMessage := []byte{}
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closeCode := CloseNoStatusReceived
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closeText := ""
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if len(payload) >= 2 {
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echoMessage = payload[:2]
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closeCode = int(binary.BigEndian.Uint16(payload))
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closeText = string(payload[2:])
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}
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switch closeCode {
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case CloseNormalClosure, CloseGoingAway:
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return noFrame, io.EOF
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default:
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return noFrame, &closeError{code: closeCode, text: closeText}
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}
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c.WriteControl(CloseMessage, echoMessage, time.Now().Add(writeWait))
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return noFrame, &CloseError{Code: closeCode, Text: closeText}
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}
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return frameType, nil
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@@ -695,8 +767,10 @@ func (c *Conn) handleProtocolError(message string) error {
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// There can be at most one open reader on a connection. NextReader discards
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// the previous message if the application has not already consumed it.
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//
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// The NextReader method and the readers returned from the method cannot be
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// accessed by more than one goroutine at a time.
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// Applications must break out of the application's read loop when this method
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// returns a non-nil error value. Errors returned from this method are
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// permanent. Once this method returns a non-nil error, all subsequent calls to
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// this method return the same error.
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func (c *Conn) NextReader() (messageType int, r io.Reader, err error) {
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c.readSeq++
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@@ -712,6 +786,15 @@ func (c *Conn) NextReader() (messageType int, r io.Reader, err error) {
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return frameType, messageReader{c, c.readSeq}, nil
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}
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}
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// Applications that do handle the error returned from this method spin in
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// tight loop on connection failure. To help application developers detect
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// this error, panic on repeated reads to the failed connection.
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c.readErrCount++
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if c.readErrCount >= 1000 {
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panic("repeated read on failed websocket connection")
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}
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return noFrame, nil, c.readErr
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}
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@@ -790,20 +873,27 @@ func (c *Conn) SetReadLimit(limit int64) {
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}
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// SetPingHandler sets the handler for ping messages received from the peer.
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// The default ping handler sends a pong to the peer.
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func (c *Conn) SetPingHandler(h func(string) error) {
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// The appData argument to h is the PING frame application data. The default
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// ping handler sends a pong to the peer.
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func (c *Conn) SetPingHandler(h func(appData string) error) {
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if h == nil {
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h = func(message string) error {
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c.WriteControl(PongMessage, []byte(message), time.Now().Add(writeWait))
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return nil
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err := c.WriteControl(PongMessage, []byte(message), time.Now().Add(writeWait))
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if err == ErrCloseSent {
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return nil
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} else if e, ok := err.(net.Error); ok && e.Temporary() {
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return nil
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}
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return err
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}
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}
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c.handlePing = h
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}
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// SetPongHandler sets the handler for pong messages received from the peer.
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// The default pong handler does nothing.
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func (c *Conn) SetPongHandler(h func(string) error) {
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// The appData argument to h is the PONG frame application data. The default
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// pong handler does nothing.
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func (c *Conn) SetPongHandler(h func(appData string) error) {
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if h == nil {
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h = func(string) error { return nil }
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}
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