ConnClient: speedup play in case of udp connections

conn-client.go

@@ -485,6 +485,19 @@ func (c *ConnClient) Play(u *url.URL) (*Response, error) {
 		return nil, fmt.Errorf("Play() can be called only after SetupUDP() or SetupTCP()")
 	}
 
+	res, err := func() (*Response, error) {
+		if *c.streamProtocol == StreamProtocolUdp {
+			res, err := c.Do(&Request{
+				Method: PLAY,
+				Url:    u,
+			})
+			if err != nil {
+				return nil, err
+			}
+
+			return res, nil
+
+		} else {
 			_, err := c.Do(&Request{
 				Method:       PLAY,
 				Url:          u,
@@ -494,7 +507,6 @@ func (c *ConnClient) Play(u *url.URL) (*Response, error) {
 				return nil, err
 			}
 
-	res, err := func() (*Response, error) {
 			frame := &InterleavedFrame{
 				Content: make([]byte, 0, clientTcpReadBufferSize),
 			}
@@ -509,18 +521,19 @@ func (c *ConnClient) Play(u *url.URL) (*Response, error) {
 				}
 
 				if res, ok := recv.(*Response); ok {
-				if res.StatusCode != StatusOK {
-					return nil, fmt.Errorf("bad status code: %d (%s)", res.StatusCode, res.StatusMessage)
-				}
-
 					return res, nil
 				}
 			}
+		}
 	}()
 	if err != nil {
 		return nil, err
 	}
 
+	if res.StatusCode != StatusOK {
+		return nil, fmt.Errorf("bad status code: %d (%s)", res.StatusCode, res.StatusMessage)
+	}
+
 	c.receiverReportTerminate = make(chan struct{})
 	c.receiverReportDone = make(chan struct{})