feat:(conn): add RemoteAddr and LocalAddr method

conn.go

@@ -192,6 +192,22 @@ func (c *Conn) flate() bool {
 	return c.copts != nil
 }
 
+// RemoteAddr returns the remote address of websocket connection.
+func (c *Conn) RemoteAddr() net.Addr {
+	if unc, ok := c.rwc.(net.Conn); ok {
+		return unc.RemoteAddr()
+	}
+	return websocketAddr{}
+}
+
+// LocalAddr returns the local address of websocket connection.
+func (c *Conn) LocalAddr() net.Addr {
+	if unc, ok := c.rwc.(net.Conn); ok {
+		return unc.LocalAddr()
+	}
+	return websocketAddr{}
+}
+
 // Ping sends a ping to the peer and waits for a pong.
 // Use this to measure latency or ensure the peer is responsive.
 // Ping must be called concurrently with Reader as it does

internal/examples/echo/server.go

@@ -30,6 +30,8 @@ func (s echoServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 	defer c.CloseNow()
 
+	s.logf("new incoming connection: %s", c.RemoteAddr().String())
+
 	if c.Subprotocol() != "echo" {
 		c.Close(websocket.StatusPolicyViolation, "client must speak the echo subprotocol")
 		return