RTSP source: support proxing with UDP-multicast

go.mod

@@ -5,7 +5,7 @@ go 1.15
 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 v0.0.0-20210617144524-db28e87ecb0c
+	github.com/aler9/gortsplib v0.0.0-20210618154725-9595e298f812
 	github.com/asticode/go-astits v0.0.0-00010101000000-000000000000
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fsnotify/fsnotify v1.4.9

go.sum

@@ -4,8 +4,8 @@ github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d h1:UQZhZ2O0vMHr2c
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/aler9/go-astits v0.0.0-20210423195926-582b09ed7c04 h1:CXgQLsU4uxWAmsXNOjGLbj0A+0IlRcpZpMgI13fmVwo=
 github.com/aler9/go-astits v0.0.0-20210423195926-582b09ed7c04/go.mod h1:DkOWmBNQpnr9mv24KfZjq4JawCFX1FCqjLVGvO0DygQ=
-github.com/aler9/gortsplib v0.0.0-20210617144524-db28e87ecb0c h1:IqV2N1yifhnVPafY8SknenVL6k66gGa5jhrujcbjl5Q=
-github.com/aler9/gortsplib v0.0.0-20210617144524-db28e87ecb0c/go.mod h1:ozu0NvgZMhb4AT6VdyV6OfmgPviSiZImRkaTwW1nEKc=
+github.com/aler9/gortsplib v0.0.0-20210618154725-9595e298f812 h1:8MJKyFmw6GMsWfTmG4t2r2BVrjsd5Zgrqu0tvXXj1F4=
+github.com/aler9/gortsplib v0.0.0-20210618154725-9595e298f812/go.mod h1:ozu0NvgZMhb4AT6VdyV6OfmgPviSiZImRkaTwW1nEKc=
 github.com/aler9/rtmp v0.0.0-20210403095203-3be4a5535927 h1:95mXJ5fUCYpBRdSOnLAQAdJHHKxxxJrVCiaqDi965YQ=
 github.com/aler9/rtmp v0.0.0-20210403095203-3be4a5535927/go.mod h1:vzuE21rowz+lT1NGsWbreIvYulgBpCGnQyeTyFblUHc=
 github.com/asticode/go-astikit v0.20.0 h1:+7N+J4E4lWx2QOkRdOf6DafWJMv6O4RRfgClwQokrH8=

internal/conf/path.go

@@ -9,6 +9,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/aler9/gortsplib"
 	"github.com/aler9/gortsplib/pkg/base"
 )
 
@@ -70,7 +71,7 @@ type PathConf struct {
 	// source
 	Source                     string                    `yaml:"source"`
 	SourceProtocol             string                    `yaml:"sourceProtocol"`
-	SourceProtocolParsed       *base.StreamProtocol `yaml:"-" json:"-"`
+	SourceProtocolParsed       *gortsplib.ClientProtocol `yaml:"-" json:"-"`
 	SourceAnyPortEnable        bool                      `yaml:"sourceAnyPortEnable"`
 	SourceFingerprint          string                    `yaml:"sourceFingerprint" json:"sourceFingerprint"`
 	SourceOnDemand             bool                      `yaml:"sourceOnDemand"`
@@ -148,11 +149,15 @@ func (pconf *PathConf) fillAndCheck(name string) error {
 
 		switch pconf.SourceProtocol {
 		case "udp":
-			v := base.StreamProtocolUDP
+			v := gortsplib.ClientProtocolUDP
+			pconf.SourceProtocolParsed = &v
+
+		case "multicast":
+			v := gortsplib.ClientProtocolMulticast
 			pconf.SourceProtocolParsed = &v
 
 		case "tcp":
-			v := base.StreamProtocolTCP
+			v := gortsplib.ClientProtocolTCP
 			pconf.SourceProtocolParsed = &v
 
 		case "automatic":

internal/rtspsource/source.go

@@ -34,7 +34,7 @@ type Parent interface {
 // Source is a RTSP external source.
 type Source struct {
 	ur              string
-	proto           *base.StreamProtocol
+	proto           *gortsplib.ClientProtocol
 	anyPortEnable   bool
 	fingerprint     string
 	readTimeout     time.Duration
@@ -53,7 +53,7 @@ type Source struct {
 func New(
 	ctxParent context.Context,
 	ur string,
-	proto *base.StreamProtocol,
+	proto *gortsplib.ClientProtocol,
 	anyPortEnable bool,
 	fingerprint string,
 	readTimeout time.Duration,
@@ -136,7 +136,7 @@ func (s *Source) runInner() bool {
 	s.log(logger.Debug, "connecting")
 
 	client := &gortsplib.Client{
-		StreamProtocol: s.proto,
+		Protocol: s.proto,
 		TLSConfig: &tls.Config{
 			InsecureSkipVerify: true,
 			VerifyConnection: func(cs tls.ConnectionState) error {

main_rtspreadpub_test.go

@@ -361,7 +361,7 @@ func TestClientRTSPAuthFail(t *testing.T) {
 				"rtsp://"+ca.user+":"+ca.pass+"@localhost:8554/test/stream",
 				gortsplib.Tracks{track},
 			)
-			require.Equal(t, "wrong status code: 401 (Unauthorized)", err.Error())
+			require.Equal(t, "invalid status code: 401 (Unauthorized)", err.Error())
 		})
 	}
 
@@ -399,7 +399,7 @@ func TestClientRTSPAuthFail(t *testing.T) {
 			_, err := gortsplib.DialRead(
 				"rtsp://" + ca.user + ":" + ca.pass + "@localhost:8554/test/stream",
 			)
-			require.Equal(t, "wrong status code: 401 (Unauthorized)", err.Error())
+			require.Equal(t, "invalid status code: 401 (Unauthorized)", err.Error())
 		})
 	}
 
@@ -419,7 +419,7 @@ func TestClientRTSPAuthFail(t *testing.T) {
 			"rtsp://localhost:8554/test/stream",
 			gortsplib.Tracks{track},
 		)
-		require.Equal(t, "wrong status code: 401 (Unauthorized)", err.Error())
+		require.Equal(t, "invalid status code: 401 (Unauthorized)", err.Error())
 	})
 }
 
@@ -548,8 +548,8 @@ func TestClientRTSPNonCompliantFrameSize(t *testing.T) {
 		require.NoError(t, err)
 
 		client := &gortsplib.Client{
-			StreamProtocol: func() *base.StreamProtocol {
-				v := base.StreamProtocolTCP
+			Protocol: func() *gortsplib.ClientProtocol {
+				v := gortsplib.ClientProtocolTCP
 				return &v
 			}(),
 			ReadBufferSize: 4500,
@@ -598,8 +598,8 @@ func TestClientRTSPNonCompliantFrameSize(t *testing.T) {
 		require.NoError(t, err)
 
 		client := &gortsplib.Client{
-			StreamProtocol: func() *base.StreamProtocol {
-				v := base.StreamProtocolTCP
+			Protocol: func() *gortsplib.ClientProtocol {
+				v := gortsplib.ClientProtocolTCP
 				return &v
 			}(),
 			ReadBufferSize: 4500,

rtsp-simple-server.yml

@@ -116,8 +116,8 @@ paths:
     source: record
 
     # if the source is an RTSP or RTSPS URL, this is the protocol that will be used to
-    # pull the stream. available options are "automatic", "udp", "tcp".
-    # the tcp protocol can help to overcome the error "no UDP packets received recently".
+    # pull the stream. available options are "automatic", "udp", "multicast", "tcp".
+    # the TCP protocol can help to overcome the error "no UDP packets received recently".
     sourceProtocol: automatic
 
     # if the source is an RTSP or RTSPS URL, this allows to support cameras that