replace ServerConn.EnableReadFrames with EnableFrames; prevent writing if the flag is disabled

examples/server-tls.go

@@ -98,8 +98,7 @@ func handleConn(conn *gortsplib.ServerConn) {
 
 		readers[conn] = struct{}{}
 
-		conn.EnableReadFrames(true)
-		conn.EnableReadTimeout(false)
+		conn.EnableFrames(true)
 
 		return &base.Response{
 			StatusCode: base.StatusOK,
@@ -120,7 +119,7 @@ func handleConn(conn *gortsplib.ServerConn) {
 			}, fmt.Errorf("someone is already publishing")
 		}
 
-		conn.EnableReadFrames(true)
+		conn.EnableFrames(true)
 		conn.EnableReadTimeout(true)
 
 		return &base.Response{

examples/server.go

@@ -97,8 +97,7 @@ func handleConn(conn *gortsplib.ServerConn) {
 
 		readers[conn] = struct{}{}
 
-		conn.EnableReadFrames(true)
-		conn.EnableReadTimeout(false)
+		conn.EnableFrames(true)
 
 		return &base.Response{
 			StatusCode: base.StatusOK,
@@ -119,7 +118,7 @@ func handleConn(conn *gortsplib.ServerConn) {
 			}, fmt.Errorf("someone is already publishing")
 		}
 
-		conn.EnableReadFrames(true)
+		conn.EnableFrames(true)
 		conn.EnableReadTimeout(true)
 
 		return &base.Response{

serverconf_test.go

@@ -126,8 +126,7 @@ func (ts *testServ) handleConn(conn *ServerConn) {
 
 		ts.readers[conn] = struct{}{}
 
-		conn.EnableReadFrames(true)
-		conn.EnableReadTimeout(false)
+		conn.EnableFrames(true)
 
 		return &base.Response{
 			StatusCode: base.StatusOK,
@@ -147,7 +146,7 @@ func (ts *testServ) handleConn(conn *ServerConn) {
 			}, fmt.Errorf("someone is already publishing")
 		}
 
-		conn.EnableReadFrames(true)
+		conn.EnableFrames(true)
 		conn.EnableReadTimeout(true)
 
 		return &base.Response{

serverconn.go

@@ -25,17 +25,18 @@ var (
 	ErrServerContentTypeMissing = errors.New("Content-Type header is missing")
 	ErrServerNoTracksDefined    = errors.New("no tracks defined")
 	ErrServerMissingCseq        = errors.New("CSeq is missing")
+	ErrServerFramesDisabled     = errors.New("frames are disabled")
 )
 
 // ServerConn is a server-side RTSP connection.
 type ServerConn struct {
-	s           *Server
-	nconn       net.Conn
-	br          *bufio.Reader
-	bw          *bufio.Writer
-	mutex       sync.Mutex
-	readFrames  bool
-	readTimeout bool
+	s                  *Server
+	nconn              net.Conn
+	br                 *bufio.Reader
+	bw                 *bufio.Writer
+	mutex              sync.Mutex
+	framesEnabled      bool
+	readTimeoutEnabled bool
 }
 
 // Close closes all the connection resources.
@@ -48,14 +49,14 @@ func (sc *ServerConn) NetConn() net.Conn {
 	return sc.nconn
 }
 
-// EnableReadFrames allows or denies receiving frames.
-func (sc *ServerConn) EnableReadFrames(v bool) {
-	sc.readFrames = v
+// EnableFrames allows reading and writing TCP frames.
+func (sc *ServerConn) EnableFrames(v bool) {
+	sc.framesEnabled = v
 }
 
 // EnableReadTimeout sets or removes the timeout on incoming packets.
 func (sc *ServerConn) EnableReadTimeout(v bool) {
-	sc.readTimeout = v
+	sc.readTimeoutEnabled = v
 }
 
 // ServerConnReadHandlers allows to set the handlers required by ServerConn.Read.
@@ -289,13 +290,13 @@ func (sc *ServerConn) backgroundRead(handlers ServerConnReadHandlers, done chan
 
 outer:
 	for {
-		if sc.readTimeout {
+		if sc.readTimeoutEnabled {
 			sc.nconn.SetReadDeadline(time.Now().Add(sc.s.conf.ReadTimeout))
 		} else {
 			sc.nconn.SetReadDeadline(time.Time{})
 		}
 
-		if sc.readFrames {
+		if sc.framesEnabled {
 			frame.Content = tcpFrameBuffer.Next()
 			what, err := base.ReadInterleavedFrameOrRequest(&frame, &req, sc.br)
 			if err != nil {
@@ -349,6 +350,10 @@ func (sc *ServerConn) WriteFrame(trackID int, streamType StreamType, content []b
 	sc.mutex.Lock()
 	defer sc.mutex.Unlock()
 
+	if !sc.framesEnabled {
+		return ErrServerFramesDisabled
+	}
+
 	sc.nconn.SetWriteDeadline(time.Now().Add(sc.s.conf.WriteTimeout))
 	frame := base.InterleavedFrame{
 		TrackID:    trackID,