Merge pull request #339 from yousong/mp4-conc

Fixes for working with rtsp stream of TL-IPC44GW

cmd/mp4/mp4.go

@@ -1,6 +1,12 @@
 package mp4
 
 import (
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
 	"github.com/AlexxIT/go2rtc/cmd/api"
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
@@ -8,10 +14,6 @@ import (
 	"github.com/AlexxIT/go2rtc/pkg/mp4"
 	"github.com/AlexxIT/go2rtc/pkg/tcp"
 	"github.com/rs/zerolog"
-	"net/http"
-	"strconv"
-	"strings"
-	"time"
 )
 
 func Init() {
@@ -111,8 +113,11 @@ func handlerMP4(w http.ResponseWriter, r *http.Request) {
 		Medias:     core.ParseQuery(r.URL.Query()),
 	}
 
+	mu := &sync.Mutex{}
 	cons.Listen(func(msg any) {
 		if data, ok := msg.([]byte); ok {
+			mu.Lock()
+			defer mu.Unlock()
 			if _, err := w.Write(data); err != nil && exit != nil {
 				exit <- err
 				exit = nil

cmd/rtsp/rtsp.go

@@ -1,6 +1,10 @@
 package rtsp
 
 import (
+	"net"
+	"net/url"
+	"strings"
+
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
 	"github.com/AlexxIT/go2rtc/pkg/core"
@@ -8,9 +12,6 @@ import (
 	"github.com/AlexxIT/go2rtc/pkg/rtsp"
 	"github.com/AlexxIT/go2rtc/pkg/tcp"
 	"github.com/rs/zerolog"
-	"net"
-	"net/url"
-	"strings"
 )
 
 func Init() {
@@ -123,6 +124,7 @@ func rtspHandler(url string) (core.Producer, error) {
 		if !backchannel {
 			return nil, err
 		}
+		log.Trace().Msgf("[rtsp] describe (backchannel=%t) err: %v", backchannel, err)
 
 		// second try without backchannel, we need to reconnect
 		conn.Backchannel = false

pkg/rtsp/client.go

@@ -5,14 +5,15 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
-	"github.com/AlexxIT/go2rtc/pkg/core"
-	"github.com/AlexxIT/go2rtc/pkg/tcp"
 	"net"
 	"net/http"
 	"net/url"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/AlexxIT/go2rtc/pkg/core"
+	"github.com/AlexxIT/go2rtc/pkg/tcp"
 )
 
 func NewClient(uri string) *Conn {
@@ -309,6 +310,7 @@ func (c *Conn) SetupMedia(media *core.Media, first bool) (byte, error) {
 		// some Dahua/Amcrest cameras fail here because two simultaneous
 		// backchannel connections
 		if c.Backchannel {
+			c.Close()
 			c.Backchannel = false
 			if err := c.Dial(); err != nil {
 				return 0, err

pkg/rtsp/helpers.go

@@ -2,14 +2,15 @@ package rtsp
 
 import (
 	"bytes"
-	"github.com/AlexxIT/go2rtc/pkg/core"
-	"github.com/pion/rtcp"
-	"github.com/pion/sdp/v3"
 	"io"
 	"net/url"
 	"regexp"
 	"strconv"
 	"strings"
+
+	"github.com/AlexxIT/go2rtc/pkg/core"
+	"github.com/pion/rtcp"
+	"github.com/pion/sdp/v3"
 )
 
 type RTCP struct {
@@ -35,6 +36,10 @@ func UnmarshalSDP(rawSDP []byte) ([]*core.Media, error) {
 			rawSDP = append([]byte(sdpHeader), rawSDP[i:]...)
 		}
 
+		// Fix invalid media type (errSDPInvalidValue) caused by
+		// some TP-LINK IP camera, e.g. TL-IPC44GW
+		rawSDP = bytes.ReplaceAll(rawSDP, []byte("m=application/TP-LINK "), []byte("m=application "))
+
 		if err == io.EOF {
 			rawSDP = append(rawSDP, '\n')
 		}