Method WriteMessage

conn.go:758–781

WriteMessage is a helper method for getting a writer using NextWriter, writing the message and closing the writer.

(messageType int, data []byte)

// 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 {

	if c.isServer && (c.newCompressionWriter == nil || !c.enableWriteCompression) {
		// Fast path with no allocations and single frame.

		var mw messageWriter
		if err := c.beginMessage(&mw, messageType); err != nil {
			return err
		}
		n := copy(c.writeBuf[mw.pos:], data)
		mw.pos += n
		data = data[n:]
		return mw.flushFrame(true, data)
	}

	w, err := c.NextWriter(messageType)
	if err != nil {
		return err
	}
	if _, err = w.Write(data); err != nil {
		return err
	}
	return w.Close()
}

// SetWriteDeadline sets the write deadline on the underlying network
// connection. After a write has timed out, the websocket state is corrupt and