support receiving requests while receiving interleaved frames (#19)

go.mod

@@ -5,7 +5,7 @@ go 1.13
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
 	github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect
-	github.com/aler9/gortsplib v0.0.0-20200630132544-e557f0263207
+	github.com/aler9/gortsplib v0.0.0-20200704162620-4c712d2370a3
 	github.com/stretchr/testify v1.4.0
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	gopkg.in/yaml.v2 v2.2.2

go.sum

@@ -2,8 +2,8 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafo
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d h1:UQZhZ2O0vMHr2cI+DC1Mbh0TJxzA3RcLoMsFw+aXw7E=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
-github.com/aler9/gortsplib v0.0.0-20200630132544-e557f0263207 h1:dazXsv+MFMwiclP/Cl9MKqGtbIfbF7mq7YdKCLXNAfo=
-github.com/aler9/gortsplib v0.0.0-20200630132544-e557f0263207/go.mod h1:sL64nUkmrTVhlT/GCaxRXyI2Xk7m8XSdw5Uv8xKGPdc=
+github.com/aler9/gortsplib v0.0.0-20200704162620-4c712d2370a3 h1:pEigKatFbio1Z6YBbBvBqQ0BI4DqkMK95MlOYnmfrLg=
+github.com/aler9/gortsplib v0.0.0-20200704162620-4c712d2370a3/go.mod h1:sL64nUkmrTVhlT/GCaxRXyI2Xk7m8XSdw5Uv8xKGPdc=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=

server-client.go

@@ -869,7 +869,7 @@ func (c *serverClient) handleRequest(req *gortsplib.Request) bool {
 				frame.Content = frame.Content[:cap(frame.Content)]
 				c.readCurBuf = !c.readCurBuf
 
-				err := c.conn.ReadInterleavedFrame(frame)
+				recv, err := c.conn.ReadInterleavedFrameOrRequest(frame)
 				if err != nil {
 					if err != io.EOF {
 						c.log("ERR: %s", err)
@@ -877,19 +877,40 @@ func (c *serverClient) handleRequest(req *gortsplib.Request) bool {
 					return false
 				}
 
-				trackId, trackFlowType := interleavedChannelToTrack(frame.Channel)
+				switch recvt := recv.(type) {
+				case *gortsplib.InterleavedFrame:
+					trackId, trackFlowType := interleavedChannelToTrack(frame.Channel)
 
-				if trackId >= len(c.streamTracks) {
-					c.log("ERR: invalid track id '%d'", trackId)
-					return false
-				}
+					if trackId >= len(c.streamTracks) {
+						c.log("ERR: invalid track id '%d'", trackId)
+						return false
+					}
+
+					c.p.events <- programEventClientFrameTcp{
+						c.path,
+						trackId,
+						trackFlowType,
+						frame.Content,
+					}
 
-				c.p.events <- programEventClientFrameTcp{
-					c.path,
-					trackId,
-					trackFlowType,
-					frame.Content,
+				case *gortsplib.Request:
+					cseq, ok := recvt.Header["CSeq"]
+					if !ok || len(cseq) != 1 {
+						c.writeResError(recvt, gortsplib.StatusBadRequest, fmt.Errorf("cseq missing"))
+						return false
+					}
+
+					switch recvt.Method {
+					case gortsplib.TEARDOWN:
+						// close connection silently
+						return false
+
+					default:
+						c.writeResError(recvt, gortsplib.StatusBadRequest, fmt.Errorf("unhandled method '%s'", recvt.Method))
+						return false
+					}
 				}
+
 			}
 		} else {
 			c.udpLastFrameTime = time.Now()

streamer.go

@@ -562,16 +562,16 @@ outer:
 		frame.Content = frame.Content[:cap(frame.Content)]
 		s.readCurBuf = !s.readCurBuf
 
-		vres, err := conn.ReadInterleavedFrameOrResponse(frame)
+		recv, err := conn.ReadInterleavedFrameOrResponse(frame)
 		if err != nil {
 			s.log("ERR: %s", err)
 			return true
 		}
 
-		switch res := vres.(type) {
+		switch recvt := recv.(type) {
 		case *gortsplib.Response:
-			if res.StatusCode != gortsplib.StatusOK {
-				s.log("ERR: PLAY returned code %d (%s)", res.StatusCode, res.StatusMessage)
+			if recvt.StatusCode != gortsplib.StatusOK {
+				s.log("ERR: PLAY returned code %d (%s)", recvt.StatusCode, recvt.StatusMessage)
 				return true
 			}
 			break outer