split readPublisher into reader and publisher

internal/core/hls_remuxer.go

@@ -165,17 +165,11 @@ func (r *hlsRemuxer) Close() {
 	r.ctxCancel()
 }
 
-// IsReadPublisher implements readPublisher.
-func (r *hlsRemuxer) IsReadPublisher() {}
-
-// IsSource implements source.
-func (r *hlsRemuxer) IsSource() {}
-
 func (r *hlsRemuxer) log(level logger.Level, format string, args ...interface{}) {
 	r.parent.Log(level, "[remuxer %s] "+format, append([]interface{}{r.pathName}, args...)...)
 }
 
-// PathName returns the path name of the readPublisher
+// PathName returns the path name.
 func (r *hlsRemuxer) PathName() string {
 	return r.pathName
 }
@@ -203,15 +197,11 @@ func (r *hlsRemuxer) run() {
 
 	r.ctxCancel()
 
-	if r.path != nil {
-		r.path.OnReadPublisherRemove(readPublisherRemoveReq{Author: r})
-	}
-
 	r.parent.OnRemuxerClose(r)
 }
 
 func (r *hlsRemuxer) runInner(innerCtx context.Context) error {
-	res := r.pathManager.OnReadPublisherSetupPlay(readPublisherSetupPlayReq{
+	res := r.pathManager.OnReaderSetupPlay(pathReaderSetupPlayReq{
 		Author:              r,
 		PathName:            r.pathName,
 		IP:                  nil,
@@ -223,6 +213,11 @@ func (r *hlsRemuxer) runInner(innerCtx context.Context) error {
 	}
 
 	r.path = res.Path
+
+	defer func() {
+		r.path.OnReaderRemove(pathReaderRemoveReq{Author: r})
+	}()
+
 	var videoTrack *gortsplib.Track
 	videoTrackID := -1
 	var h264SPS []byte
@@ -300,7 +295,7 @@ func (r *hlsRemuxer) runInner(innerCtx context.Context) error {
 
 	r.ringBuffer = ringbuffer.New(uint64(r.readBufferCount))
 
-	r.path.OnReadPublisherPlay(readPublisherPlayReq{
+	r.path.OnReaderPlay(pathReaderPlayReq{
 		Author: r,
 	})
 
@@ -489,17 +484,13 @@ func (r *hlsRemuxer) OnRequest(req hlsRemuxerRequest) {
 	}
 }
 
-// OnReaderAccepted implements readPublisher.
+// OnReaderAccepted implements reader.
 func (r *hlsRemuxer) OnReaderAccepted() {
 	r.log(logger.Info, "is remuxing into HLS")
 }
 
-// OnPublisherAccepted implements readPublisher.
-func (r *hlsRemuxer) OnPublisherAccepted(tracksLen int) {
-}
-
-// OnFrame implements readPublisher.
-func (r *hlsRemuxer) OnFrame(trackID int, streamType gortsplib.StreamType, payload []byte) {
+// OnReaderFrame implements reader.
+func (r *hlsRemuxer) OnReaderFrame(trackID int, streamType gortsplib.StreamType, payload []byte) {
 	if streamType == gortsplib.StreamTypeRTP {
 		r.ringBuffer.Push(hlsRemuxerTrackIDPayloadPair{trackID, payload})
 	}

internal/core/path_manager.go

@@ -39,9 +39,9 @@ type pathManager struct {
 	confReload        chan map[string]*conf.PathConf
 	pathClose         chan *path
 	pathSourceReady   chan *path
-	rpDescribe      chan readPublisherDescribeReq
-	rpSetupPlay     chan readPublisherSetupPlayReq
-	rpAnnounce      chan readPublisherAnnounceReq
+	describe          chan pathDescribeReq
+	readerSetupPlay   chan pathReaderSetupPlayReq
+	publisherAnnounce chan pathPublisherAnnounceReq
 	hlsServerSet      chan *hlsServer
 }
 
@@ -74,9 +74,9 @@ func newPathManager(
 		confReload:        make(chan map[string]*conf.PathConf),
 		pathClose:         make(chan *path),
 		pathSourceReady:   make(chan *path),
-		rpDescribe:      make(chan readPublisherDescribeReq),
-		rpSetupPlay:     make(chan readPublisherSetupPlayReq),
-		rpAnnounce:      make(chan readPublisherAnnounceReq),
+		describe:          make(chan pathDescribeReq),
+		readerSetupPlay:   make(chan pathReaderSetupPlayReq),
+		publisherAnnounce: make(chan pathPublisherAnnounceReq),
 		hlsServerSet:      make(chan *hlsServer),
 	}
 
@@ -150,10 +150,10 @@ outer:
 				pm.hlsServer.OnPathSourceReady(pa)
 			}
 
-		case req := <-pm.rpDescribe:
+		case req := <-pm.describe:
 			pathName, pathConf, err := pm.findPathConf(req.PathName)
 			if err != nil {
-				req.Res <- readPublisherDescribeRes{Err: err}
+				req.Res <- pathDescribeRes{Err: err}
 				continue
 			}
 
@@ -166,7 +166,7 @@ outer:
 				pathConf.ReadPass,
 			)
 			if err != nil {
-				req.Res <- readPublisherDescribeRes{Err: err}
+				req.Res <- pathDescribeRes{Err: err}
 				continue
 			}
 
@@ -175,12 +175,12 @@ outer:
 				pm.createPath(pathName, pathConf, req.PathName)
 			}
 
-			pm.paths[req.PathName].OnPathManDescribe(req)
+			pm.paths[req.PathName].OnDescribe(req)
 
-		case req := <-pm.rpSetupPlay:
+		case req := <-pm.readerSetupPlay:
 			pathName, pathConf, err := pm.findPathConf(req.PathName)
 			if err != nil {
-				req.Res <- readPublisherSetupPlayRes{Err: err}
+				req.Res <- pathReaderSetupPlayRes{Err: err}
 				continue
 			}
 
@@ -193,7 +193,7 @@ outer:
 				pathConf.ReadPass,
 			)
 			if err != nil {
-				req.Res <- readPublisherSetupPlayRes{Err: err}
+				req.Res <- pathReaderSetupPlayRes{Err: err}
 				continue
 			}
 
@@ -202,12 +202,12 @@ outer:
 				pm.createPath(pathName, pathConf, req.PathName)
 			}
 
-			pm.paths[req.PathName].OnPathManSetupPlay(req)
+			pm.paths[req.PathName].OnReaderSetupPlay(req)
 
-		case req := <-pm.rpAnnounce:
+		case req := <-pm.publisherAnnounce:
 			pathName, pathConf, err := pm.findPathConf(req.PathName)
 			if err != nil {
-				req.Res <- readPublisherAnnounceRes{Err: err}
+				req.Res <- pathPublisherAnnounceRes{Err: err}
 				continue
 			}
 
@@ -220,7 +220,7 @@ outer:
 				pathConf.PublishPass,
 			)
 			if err != nil {
-				req.Res <- readPublisherAnnounceRes{Err: err}
+				req.Res <- pathPublisherAnnounceRes{Err: err}
 				continue
 			}
 
@@ -229,7 +229,7 @@ outer:
 				pm.createPath(pathName, pathConf, req.PathName)
 			}
 
-			pm.paths[req.PathName].OnPathManAnnounce(req)
+			pm.paths[req.PathName].OnPublisherAnnounce(req)
 
 		case s := <-pm.hlsServerSet:
 			pm.hlsServer = s
@@ -298,7 +298,7 @@ func (pm *pathManager) authenticate(
 	// validate ip
 	if pathIPs != nil && ip != nil {
 		if !ipEqualOrInRange(ip, pathIPs) {
-			return readPublisherErrAuthCritical{
+			return pathErrAuthCritical{
 				Message: fmt.Sprintf("IP '%s' not allowed", ip),
 				Response: &base.Response{
 					StatusCode: base.StatusUnauthorized,
@@ -342,36 +342,36 @@ func (pm *pathManager) OnPathClose(pa *path) {
 	}
 }
 
-// OnReadPublisherDescribe is called by a readPublisher.
-func (pm *pathManager) OnReadPublisherDescribe(req readPublisherDescribeReq) readPublisherDescribeRes {
-	req.Res = make(chan readPublisherDescribeRes)
+// OnDescribe is called by a reader or publisher.
+func (pm *pathManager) OnDescribe(req pathDescribeReq) pathDescribeRes {
+	req.Res = make(chan pathDescribeRes)
 	select {
-	case pm.rpDescribe <- req:
+	case pm.describe <- req:
 		return <-req.Res
 	case <-pm.ctx.Done():
-		return readPublisherDescribeRes{Err: fmt.Errorf("terminated")}
+		return pathDescribeRes{Err: fmt.Errorf("terminated")}
 	}
 }
 
-// OnReadPublisherAnnounce is called by a readPublisher.
-func (pm *pathManager) OnReadPublisherAnnounce(req readPublisherAnnounceReq) readPublisherAnnounceRes {
-	req.Res = make(chan readPublisherAnnounceRes)
+// OnPublisherAnnounce is called by a publisher.
+func (pm *pathManager) OnPublisherAnnounce(req pathPublisherAnnounceReq) pathPublisherAnnounceRes {
+	req.Res = make(chan pathPublisherAnnounceRes)
 	select {
-	case pm.rpAnnounce <- req:
+	case pm.publisherAnnounce <- req:
 		return <-req.Res
 	case <-pm.ctx.Done():
-		return readPublisherAnnounceRes{Err: fmt.Errorf("terminated")}
+		return pathPublisherAnnounceRes{Err: fmt.Errorf("terminated")}
 	}
 }
 
-// OnReadPublisherSetupPlay is called by a readPublisher.
-func (pm *pathManager) OnReadPublisherSetupPlay(req readPublisherSetupPlayReq) readPublisherSetupPlayRes {
-	req.Res = make(chan readPublisherSetupPlayRes)
+// OnReaderSetupPlay is called by a reader.
+func (pm *pathManager) OnReaderSetupPlay(req pathReaderSetupPlayReq) pathReaderSetupPlayRes {
+	req.Res = make(chan pathReaderSetupPlayRes)
 	select {
-	case pm.rpSetupPlay <- req:
+	case pm.readerSetupPlay <- req:
 		return <-req.Res
 	case <-pm.ctx.Done():
-		return readPublisherSetupPlayRes{Err: fmt.Errorf("terminated")}
+		return pathReaderSetupPlayRes{Err: fmt.Errorf("terminated")}
 	}
 }
 

internal/core/publisher.go

@@ -0,0 +1,8 @@
+package core
+
+// publisher is an entity that can publish a stream dynamically.
+type publisher interface {
+	source
+	Close()
+	OnPublisherAccepted(tracksLen int)
+}

internal/core/read_publisher.go

@@ -1,113 +0,0 @@
-package core
-
-import (
-	"fmt"
-	"net"
-
-	"github.com/aler9/gortsplib"
-	"github.com/aler9/gortsplib/pkg/base"
-	"github.com/aler9/gortsplib/pkg/headers"
-)
-
-type readPublisherErrNoOnePublishing struct {
-	PathName string
-}
-
-// Error implements the error interface.
-func (e readPublisherErrNoOnePublishing) Error() string {
-	return fmt.Sprintf("no one is publishing to path '%s'", e.PathName)
-}
-
-type readPublisherErrAuthNotCritical struct {
-	*base.Response
-}
-
-// Error implements the error interface.
-func (readPublisherErrAuthNotCritical) Error() string {
-	return "non-critical authentication error"
-}
-
-type readPublisherErrAuthCritical struct {
-	Message  string
-	Response *base.Response
-}
-
-// Error implements the error interface.
-func (readPublisherErrAuthCritical) Error() string {
-	return "critical authentication error"
-}
-
-type readPublisher interface {
-	IsReadPublisher()
-	IsSource()
-	Close()
-	OnReaderAccepted()
-	OnPublisherAccepted(tracksLen int)
-	OnFrame(int, gortsplib.StreamType, []byte)
-}
-
-type readPublisherDescribeRes struct {
-	Stream   *gortsplib.ServerStream
-	Redirect string
-	Err      error
-}
-
-type readPublisherDescribeReq struct {
-	PathName            string
-	URL                 *base.URL
-	IP                  net.IP
-	ValidateCredentials func(authMethods []headers.AuthMethod, pathUser string, pathPass string) error
-	Res                 chan readPublisherDescribeRes
-}
-
-type readPublisherSetupPlayRes struct {
-	Path   *path
-	Stream *gortsplib.ServerStream
-	Err    error
-}
-
-type readPublisherSetupPlayReq struct {
-	Author              readPublisher
-	PathName            string
-	IP                  net.IP
-	ValidateCredentials func(authMethods []headers.AuthMethod, pathUser string, pathPass string) error
-	Res                 chan readPublisherSetupPlayRes
-}
-
-type readPublisherAnnounceRes struct {
-	Path *path
-	Err  error
-}
-
-type readPublisherAnnounceReq struct {
-	Author              readPublisher
-	PathName            string
-	Tracks              gortsplib.Tracks
-	IP                  net.IP
-	ValidateCredentials func(authMethods []headers.AuthMethod, pathUser string, pathPass string) error
-	Res                 chan readPublisherAnnounceRes
-}
-
-type readPublisherRemoveReq struct {
-	Author readPublisher
-	Res    chan struct{}
-}
-
-type readPublisherPlayReq struct {
-	Author readPublisher
-	Res    chan struct{}
-}
-
-type readPublisherRecordRes struct {
-	Err error
-}
-
-type readPublisherRecordReq struct {
-	Author readPublisher
-	Res    chan readPublisherRecordRes
-}
-
-type readPublisherPauseReq struct {
-	Author readPublisher
-	Res    chan struct{}
-}

internal/core/reader.go

@@ -0,0 +1,12 @@
+package core
+
+import (
+	"github.com/aler9/gortsplib"
+)
+
+// reader is an entity that can read a stream.
+type reader interface {
+	Close()
+	OnReaderAccepted()
+	OnReaderFrame(int, gortsplib.StreamType, []byte)
+}

internal/core/rtmp_conn.go

@@ -121,9 +121,6 @@ func (c *rtmpConn) Close() {
 	c.ctxCancel()
 }
 
-// IsReadPublisher implements readPublisher.
-func (c *rtmpConn) IsReadPublisher() {}
-
 // IsSource implements source.
 func (c *rtmpConn) IsSource() {}
 
@@ -168,10 +165,6 @@ func (c *rtmpConn) run() {
 
 	c.ctxCancel()
 
-	if c.path != nil {
-		c.path.OnReadPublisherRemove(readPublisherRemoveReq{Author: c})
-	}
-
 	c.parent.OnConnClose(c)
 }
 
@@ -197,7 +190,7 @@ func (c *rtmpConn) runInner(ctx context.Context) error {
 func (c *rtmpConn) runRead(ctx context.Context) error {
 	pathName, query := pathNameAndQuery(c.conn.URL())
 
-	res := c.pathManager.OnReadPublisherSetupPlay(readPublisherSetupPlayReq{
+	res := c.pathManager.OnReaderSetupPlay(pathReaderSetupPlayReq{
 		Author:   c,
 		PathName: pathName,
 		IP:       c.ip(),
@@ -207,7 +200,7 @@ func (c *rtmpConn) runRead(ctx context.Context) error {
 	})
 
 	if res.Err != nil {
-		if terr, ok := res.Err.(readPublisherErrAuthCritical); ok {
+		if terr, ok := res.Err.(pathErrAuthCritical); ok {
 			// wait some seconds to stop brute force attacks
 			<-time.After(rtmpConnPauseAfterAuthError)
 			return errors.New(terr.Message)
@@ -217,6 +210,10 @@ func (c *rtmpConn) runRead(ctx context.Context) error {
 
 	c.path = res.Path
 
+	defer func() {
+		c.path.OnReaderRemove(pathReaderRemoveReq{Author: c})
+	}()
+
 	var videoTrack *gortsplib.Track
 	videoTrackID := -1
 	var h264Decoder *rtph264.Decoder
@@ -261,7 +258,7 @@ func (c *rtmpConn) runRead(ctx context.Context) error {
 		c.ringBuffer.Close()
 	}()
 
-	c.path.OnReadPublisherPlay(readPublisherPlayReq{
+	c.path.OnReaderPlay(pathReaderPlayReq{
 		Author: c,
 	})
 
@@ -389,7 +386,7 @@ func (c *rtmpConn) runPublish(ctx context.Context) error {
 
 	pathName, query := pathNameAndQuery(c.conn.URL())
 
-	res := c.pathManager.OnReadPublisherAnnounce(readPublisherAnnounceReq{
+	res := c.pathManager.OnPublisherAnnounce(pathPublisherAnnounceReq{
 		Author:   c,
 		PathName: pathName,
 		Tracks:   tracks,
@@ -400,7 +397,7 @@ func (c *rtmpConn) runPublish(ctx context.Context) error {
 	})
 
 	if res.Err != nil {
-		if terr, ok := res.Err.(readPublisherErrAuthCritical); ok {
+		if terr, ok := res.Err.(pathErrAuthCritical); ok {
 			// wait some seconds to stop brute force attacks
 			<-time.After(rtmpConnPauseAfterAuthError)
 			return errors.New(terr.Message)
@@ -410,10 +407,14 @@ func (c *rtmpConn) runPublish(ctx context.Context) error {
 
 	c.path = res.Path
 
+	defer func() {
+		c.path.OnPublisherRemove(pathPublisherRemoveReq{Author: c})
+	}()
+
 	// disable write deadline
 	c.conn.NetConn().SetWriteDeadline(time.Time{})
 
-	rres := c.path.OnReadPublisherRecord(readPublisherRecordReq{Author: c})
+	rres := c.path.OnPublisherRecord(pathPublisherRecordReq{Author: c})
 	if rres.Err != nil {
 		return rres.Err
 	}
@@ -497,7 +498,7 @@ func (c *rtmpConn) validateCredentials(
 ) error {
 	if query.Get("user") != pathUser ||
 		query.Get("pass") != pathPass {
-		return readPublisherErrAuthCritical{
+		return pathErrAuthCritical{
 			Message: "wrong username or password",
 		}
 	}
@@ -505,12 +506,19 @@ func (c *rtmpConn) validateCredentials(
 	return nil
 }
 
-// OnReaderAccepted implements readPublisher.
+// OnReaderAccepted implements reader.
 func (c *rtmpConn) OnReaderAccepted() {
 	c.log(logger.Info, "is reading from path '%s'", c.path.Name())
 }
 
-// OnPublisherAccepted implements readPublisher.
+// OnReaderFrame implements reader.
+func (c *rtmpConn) OnReaderFrame(trackID int, streamType gortsplib.StreamType, payload []byte) {
+	if streamType == gortsplib.StreamTypeRTP {
+		c.ringBuffer.Push(rtmpConnTrackIDPayloadPair{trackID, payload})
+	}
+}
+
+// OnPublisherAccepted implements publisher.
 func (c *rtmpConn) OnPublisherAccepted(tracksLen int) {
 	c.log(logger.Info, "is publishing to path '%s', %d %s",
 		c.path.Name(),
@@ -522,10 +530,3 @@ func (c *rtmpConn) OnPublisherAccepted(tracksLen int) {
 			return "tracks"
 		}())
 }
-
-// OnFrame implements readPublisher.
-func (c *rtmpConn) OnFrame(trackID int, streamType gortsplib.StreamType, payload []byte) {
-	if streamType == gortsplib.StreamTypeRTP {
-		c.ringBuffer.Push(rtmpConnTrackIDPayloadPair{trackID, payload})
-	}
-}

internal/core/rtmp_source.go

@@ -24,8 +24,8 @@ const (
 
 type rtmpSourceParent interface {
 	Log(logger.Level, string, ...interface{})
-	OnSourceExternalSetReady(req sourceExtSetReadyReq)
-	OnSourceExternalSetNotReady(req sourceExtSetNotReadyReq)
+	OnSourceStaticSetReady(req pathSourceStaticSetReadyReq)
+	OnSourceStaticSetNotReady(req pathSourceStaticSetNotReadyReq)
 	OnSourceFrame(int, gortsplib.StreamType, []byte)
 }
 
@@ -81,8 +81,8 @@ func (s *rtmpSource) Close() {
 // IsSource implements source.
 func (s *rtmpSource) IsSource() {}
 
-// IsSourceExternal implements sourceExternal.
-func (s *rtmpSource) IsSourceExternal() {}
+// IsSourceStatic implements sourceStatic.
+func (s *rtmpSource) IsSourceStatic() {}
 
 func (s *rtmpSource) log(level logger.Level, format string, args ...interface{}) {
 	s.parent.Log(level, "[rtmp source] "+format, args...)
@@ -168,12 +168,12 @@ func (s *rtmpSource) runInner() bool {
 
 					s.log(logger.Info, "ready")
 
-					s.parent.OnSourceExternalSetReady(sourceExtSetReadyReq{
+					s.parent.OnSourceStaticSetReady(pathSourceStaticSetReadyReq{
 						Tracks: tracks,
 					})
 
 					defer func() {
-						s.parent.OnSourceExternalSetNotReady(sourceExtSetNotReadyReq{})
+						s.parent.OnSourceStaticSetNotReady(pathSourceStaticSetNotReadyReq{})
 					}()
 
 					rtcpSenders := rtcpsenderset.New(tracks, s.parent.OnSourceFrame)

internal/core/rtsp_conn.go

@@ -148,7 +148,7 @@ func (c *rtspConn) validateCredentials(
 		// 4) with password and username
 		// therefore we must allow up to 3 failures
 		if c.authFailures > 3 {
-			return readPublisherErrAuthCritical{
+			return pathErrAuthCritical{
 				Message: "unauthorized: " + err.Error(),
 				Response: &base.Response{
 					StatusCode: base.StatusUnauthorized,
@@ -160,7 +160,7 @@ func (c *rtspConn) validateCredentials(
 			c.log(logger.Debug, "WARN: unauthorized: %s", err)
 		}
 
-		return readPublisherErrAuthNotCritical{
+		return pathErrAuthNotCritical{
 			Response: &base.Response{
 				StatusCode: base.StatusUnauthorized,
 				Header: base.Header{
@@ -188,7 +188,7 @@ func (c *rtspConn) OnResponse(res *base.Response) {
 
 // OnDescribe is called by rtspServer.
 func (c *rtspConn) OnDescribe(ctx *gortsplib.ServerHandlerOnDescribeCtx) (*base.Response, *gortsplib.ServerStream, error) {
-	res := c.pathManager.OnReadPublisherDescribe(readPublisherDescribeReq{
+	res := c.pathManager.OnDescribe(pathDescribeReq{
 		PathName: ctx.Path,
 		URL:      ctx.Req.URL,
 		IP:       c.ip(),
@@ -199,16 +199,16 @@ func (c *rtspConn) OnDescribe(ctx *gortsplib.ServerHandlerOnDescribeCtx) (*base.
 
 	if res.Err != nil {
 		switch terr := res.Err.(type) {
-		case readPublisherErrAuthNotCritical:
+		case pathErrAuthNotCritical:
 			return terr.Response, nil, nil
 
-		case readPublisherErrAuthCritical:
+		case pathErrAuthCritical:
 			// wait some seconds to stop brute force attacks
 			<-time.After(rtspConnPauseAfterAuthError)
 
 			return terr.Response, nil, errors.New(terr.Message)
 
-		case readPublisherErrNoOnePublishing:
+		case pathErrNoOnePublishing:
 			return &base.Response{
 				StatusCode: base.StatusNotFound,
 			}, nil, res.Err

internal/core/rtsp_session.go

@@ -66,8 +66,13 @@ func (s *rtspSession) ParentClose() {
 		}
 	}
 
-	if s.path != nil {
-		s.path.OnReadPublisherRemove(readPublisherRemoveReq{Author: s})
+	switch s.ss.State() {
+	case gortsplib.ServerSessionStatePrePlay, gortsplib.ServerSessionStatePlay:
+		s.path.OnReaderRemove(pathReaderRemoveReq{Author: s})
+		s.path = nil
+
+	case gortsplib.ServerSessionStatePreRecord, gortsplib.ServerSessionStateRecord:
+		s.path.OnPublisherRemove(pathPublisherRemoveReq{Author: s})
 		s.path = nil
 	}
 
@@ -79,13 +84,10 @@ func (s *rtspSession) Close() {
 	s.ss.Close()
 }
 
-// IsReadPublisher implements readPublisher.
-func (s *rtspSession) IsReadPublisher() {}
-
 // IsSource implements source.
 func (s *rtspSession) IsSource() {}
 
-// IsRTSPSession implements path.rtspSession.
+// IsRTSPSession implements pathRTSPSession.
 func (s *rtspSession) IsRTSPSession() {}
 
 // VisualID returns the visual ID of the session.
@@ -106,7 +108,7 @@ func (s *rtspSession) log(level logger.Level, format string, args ...interface{}
 
 // OnAnnounce is called by rtspServer.
 func (s *rtspSession) OnAnnounce(c *rtspConn, ctx *gortsplib.ServerHandlerOnAnnounceCtx) (*base.Response, error) {
-	res := s.pathManager.OnReadPublisherAnnounce(readPublisherAnnounceReq{
+	res := s.pathManager.OnPublisherAnnounce(pathPublisherAnnounceReq{
 		Author:   s,
 		PathName: ctx.Path,
 		Tracks:   ctx.Tracks,
@@ -118,10 +120,10 @@ func (s *rtspSession) OnAnnounce(c *rtspConn, ctx *gortsplib.ServerHandlerOnAnno
 
 	if res.Err != nil {
 		switch terr := res.Err.(type) {
-		case readPublisherErrAuthNotCritical:
+		case pathErrAuthNotCritical:
 			return terr.Response, nil
 
-		case readPublisherErrAuthCritical:
+		case pathErrAuthCritical:
 			// wait some seconds to stop brute force attacks
 			<-time.After(pauseAfterAuthError)
 
@@ -165,7 +167,7 @@ func (s *rtspSession) OnSetup(c *rtspConn, ctx *gortsplib.ServerHandlerOnSetupCt
 
 	switch s.ss.State() {
 	case gortsplib.ServerSessionStateInitial, gortsplib.ServerSessionStatePrePlay: // play
-		res := s.pathManager.OnReadPublisherSetupPlay(readPublisherSetupPlayReq{
+		res := s.pathManager.OnReaderSetupPlay(pathReaderSetupPlayReq{
 			Author:   s,
 			PathName: ctx.Path,
 			IP:       ctx.Conn.NetConn().RemoteAddr().(*net.TCPAddr).IP,
@@ -176,16 +178,16 @@ func (s *rtspSession) OnSetup(c *rtspConn, ctx *gortsplib.ServerHandlerOnSetupCt
 
 		if res.Err != nil {
 			switch terr := res.Err.(type) {
-			case readPublisherErrAuthNotCritical:
+			case pathErrAuthNotCritical:
 				return terr.Response, nil, nil
 
-			case readPublisherErrAuthCritical:
+			case pathErrAuthCritical:
 				// wait some seconds to stop brute force attacks
 				<-time.After(pauseAfterAuthError)
 
 				return terr.Response, nil, errors.New(terr.Message)
 
-			case readPublisherErrNoOnePublishing:
+			case pathErrNoOnePublishing:
 				return &base.Response{
 					StatusCode: base.StatusNotFound,
 				}, nil, res.Err
@@ -232,9 +234,7 @@ func (s *rtspSession) OnPlay(ctx *gortsplib.ServerHandlerOnPlayCtx) (*base.Respo
 			}, fmt.Errorf("path has changed, was '%s', now is '%s'", s.path.Name(), ctx.Path)
 		}
 
-		s.path.OnReadPublisherPlay(readPublisherPlayReq{
-			Author: s,
-		})
+		s.path.OnReaderPlay(pathReaderPlayReq{Author: s})
 
 		if s.path.Conf().RunOnRead != "" {
 			_, port, _ := net.SplitHostPort(s.rtspAddress)
@@ -259,7 +259,7 @@ func (s *rtspSession) OnRecord(ctx *gortsplib.ServerHandlerOnRecordCtx) (*base.R
 		}, fmt.Errorf("path has changed, was '%s', now is '%s'", s.path.Name(), ctx.Path)
 	}
 
-	res := s.path.OnReadPublisherRecord(readPublisherRecordReq{Author: s})
+	res := s.path.OnPublisherRecord(pathPublisherRecordReq{Author: s})
 	if res.Err != nil {
 		return &base.Response{
 			StatusCode: base.StatusBadRequest,
@@ -279,10 +279,10 @@ func (s *rtspSession) OnPause(ctx *gortsplib.ServerHandlerOnPauseCtx) (*base.Res
 			s.onReadCmd.Close()
 		}
 
-		s.path.OnReadPublisherPause(readPublisherPauseReq{Author: s})
+		s.path.OnReaderPause(pathReaderPauseReq{Author: s})
 
 	case gortsplib.ServerSessionStateRecord:
-		s.path.OnReadPublisherPause(readPublisherPauseReq{Author: s})
+		s.path.OnPublisherPause(pathPublisherPauseReq{Author: s})
 	}
 
 	return &base.Response{
@@ -290,7 +290,7 @@ func (s *rtspSession) OnPause(ctx *gortsplib.ServerHandlerOnPauseCtx) (*base.Res
 	}, nil
 }
 
-// OnReaderAccepted implements readPublisher.
+// OnReaderAccepted implements reader.
 func (s *rtspSession) OnReaderAccepted() {
 	tracksLen := len(s.ss.SetuppedTracks())
 
@@ -306,7 +306,12 @@ func (s *rtspSession) OnReaderAccepted() {
 		s.displayedProtocol())
 }
 
-// OnPublisherAccepted implements readPublisher.
+// OnReaderFrame implements reader.
+func (s *rtspSession) OnReaderFrame(trackID int, streamType gortsplib.StreamType, payload []byte) {
+	s.ss.WriteFrame(trackID, streamType, payload)
+}
+
+// OnPublisherAccepted implements publisher.
 func (s *rtspSession) OnPublisherAccepted(tracksLen int) {
 	s.log(logger.Info, "is publishing to path '%s', %d %s with %s",
 		s.path.Name(),
@@ -320,11 +325,6 @@ func (s *rtspSession) OnPublisherAccepted(tracksLen int) {
 		s.displayedProtocol())
 }
 
-// OnFrame implements readPublisher.
-func (s *rtspSession) OnFrame(trackID int, streamType gortsplib.StreamType, payload []byte) {
-	s.ss.WriteFrame(trackID, streamType, payload)
-}
-
 // OnIncomingFrame is called by rtspServer.
 func (s *rtspSession) OnIncomingFrame(ctx *gortsplib.ServerHandlerOnFrameCtx) {
 	if s.ss.State() != gortsplib.ServerSessionStateRecord {

internal/core/rtsp_source.go

@@ -23,8 +23,8 @@ const (
 
 type rtspSourceParent interface {
 	Log(logger.Level, string, ...interface{})
-	OnSourceExternalSetReady(req sourceExtSetReadyReq)
-	OnSourceExternalSetNotReady(req sourceExtSetNotReadyReq)
+	OnSourceStaticSetReady(req pathSourceStaticSetReadyReq)
+	OnSourceStaticSetNotReady(req pathSourceStaticSetNotReadyReq)
 	OnSourceFrame(int, gortsplib.StreamType, []byte)
 }
 
@@ -94,8 +94,8 @@ func (s *rtspSource) Close() {
 // IsSource implements source.
 func (s *rtspSource) IsSource() {}
 
-// IsSourceExternal implements sourceExternal.
-func (s *rtspSource) IsSourceExternal() {}
+// IsSourceStatic implements sourceStatic.
+func (s *rtspSource) IsSourceStatic() {}
 
 func (s *rtspSource) log(level logger.Level, format string, args ...interface{}) {
 	s.parent.Log(level, "[rtsp source] "+format, args...)
@@ -187,12 +187,12 @@ func (s *rtspSource) runInner() bool {
 
 	s.log(logger.Info, "ready")
 
-	s.parent.OnSourceExternalSetReady(sourceExtSetReadyReq{
+	s.parent.OnSourceStaticSetReady(pathSourceStaticSetReadyReq{
 		Tracks: conn.Tracks(),
 	})
 
 	defer func() {
-		s.parent.OnSourceExternalSetNotReady(sourceExtSetNotReadyReq{})
+		s.parent.OnSourceStaticSetNotReady(pathSourceStaticSetNotReadyReq{})
 	}()
 
 	readErr := make(chan error)

internal/core/source.go

@@ -1,26 +1,13 @@
 package core
 
-import (
-	"github.com/aler9/gortsplib"
-)
-
+// source is an entity that can provide a stream, statically or dynamically.
 type source interface {
 	IsSource()
 }
 
-type sourceExternal interface {
-	IsSource()
-	IsSourceExternal()
+// sourceStatic is an entity that can provide a static stream.
+type sourceStatic interface {
+	source
+	IsSourceStatic()
 	Close()
 }
-
-type sourceExtSetReadyRes struct{}
-
-type sourceExtSetReadyReq struct {
-	Tracks gortsplib.Tracks
-	Res    chan sourceExtSetReadyRes
-}
-
-type sourceExtSetNotReadyReq struct {
-	Res chan struct{}
-}