fix gstreamer tests

serverconf_test.go

@@ -294,11 +294,13 @@ func TestServerPublishReadTCP(t *testing.T) {
 
 			case "gstreamer":
 				cnt1, err := newContainer("gstreamer", "publish", []string{
-					"filesrc location=emptyvideo.ts ! tsdemux ! queue ! video/x-h264 ! h264parse config-interval=1 ! rtspclientsink " +
+					"filesrc location=emptyvideo.ts ! tsdemux ! video/x-h264 ! rtspclientsink " +
 						"location=" + proto + "://127.0.0.1:8554/teststream protocols=tcp tls-validation-flags=0 latency=0 timeout=0 rtx-time=0",
 				})
 				require.NoError(t, err)
 				defer cnt1.close()
+
+				time.Sleep(1 * time.Second)
 			}
 
 			time.Sleep(1 * time.Second)

serverconn.go

@@ -195,6 +195,15 @@ func (sc *ServerConn) backgroundRead(handlers ServerConnReadHandlers, done chan
 					}, fmt.Errorf("transport header: %s", err)
 				}
 
+				// workaround to prevent a bug in rtspclientsink
+				// that makes impossible for the client to receive the response
+				// and send frames.
+				// this was causing problems during unit tests.
+				if ua, ok := req.Header["User-Agent"]; ok && len(ua) == 1 &&
+					strings.HasPrefix(ua[0], "GStreamer") {
+					time.Sleep(1 * time.Second)
+				}
+
 				return handlers.OnSetup(req, th)
 			}
 

testimages/gstreamer/Dockerfile

@@ -1,5 +1,5 @@
 ######################################
-FROM ubuntu:20.04 AS exitafterframe
+FROM ubuntu:20.04 AS build
 
 RUN apt update && apt install -y --no-install-recommends \
     pkg-config \
@@ -36,7 +36,7 @@ RUN apt update && apt install -y --no-install-recommends \
     gstreamer1.0-libav \
     && rm -rf /var/lib/apt/lists/*
 
-COPY --from=exitafterframe /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libexitafterframe.so /usr/lib/x86_64-linux-gnu/gstreamer-1.0/
+COPY --from=build /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libexitafterframe.so /usr/lib/x86_64-linux-gnu/gstreamer-1.0/
 
 COPY emptyvideo.ts /