RTCP Compatibility for Safari, Firefox and Chrome

[imtiyazs]

Hey there, I am working on RTCP broadcast (Broadcast demo) and I have come around some observations about compatibility for Chrome, Firefox and Safari. The demo works well on all browsers (Safari, Chrome and Firefox) when it comes to broadcasting. But there are few issues while connecting to broadcast session.

Below are the test results:

1. Broadcaster: Google Chrome

• Working Receiver Browser: Chrome
• Not Working Receiver Browser: Firefox, Safari, Chrome(Android)

2. Broadcaster: FireFox

• Working Receiver Browser: none
• Not Working Receiver Browser: Firefox, Safari, Chrome, Chrome(Android)

3. Broadcast: Safari

• Working Receiver Browser: Chrome
• Not Working Receiver Browser: Firefox, Safari, Chrome(Android)

I am not sure what could be the exact reason but it looks like there is something to do with the SDP capabilities on server end.

Also on Safari while connecting to broadcast, the console throws below error:
OperationError: Failed to set local offer sdp: max-bundle is used but no bundle group found.

I tried changing max-bundle to max-compat and balanced, but does not work.

When I look at RTCP compatibility, all devices support the API as per the MDN documentation and I tried few p2p webRTC examples too. RTCPMulticonnection by Muaz Khan also worked on all devices.

Finally, my question is, does media server go support all platforms for RTCP connection?

[imtiyazs]

Also I get this issue on server end if I try to connect using Firefox and Safari.

2020/05/31 11:49:08 [Recovery] 2020/05/31 - 11:49:08 panic recovered: runtime error: invalid memory address or nil pointer dereference /usr/local/go/src/runtime/panic.go:212 (0x404ab29) panicmem: panic(memoryError) /usr/local/go/src/runtime/signal_unix.go:695 (0x404a978) sigpanic: panicmem() /Users/imtiyaz/Workspace/pkg/mod/github.com/notedit/sdp@v0.0.4/dtlsinfo.go:36 (0x47d7f4e) (*DTLSInfo).GetSetup: return d.setup /Users/imtiyaz/Workspace/pkg/mod/github.com/notedit/media-server-go@v0.2.1/endpoint.go:60 (0x47d7f83) (*Endpoint).CreateTransport: localDtls = sdp.NewDTLSInfo(remoteSdp.GetDTLS().GetSetup().Reverse(), "sha-256", e.fingerprint) /Users/imtiyaz/Workspace/src/mkcl-streaming/live/server/app/modules/transcoder/rtcp.go:117 (0x47ef854) InitRTCPChannel: transport = endpoint.CreateTransport(offer, nil) /Users/imtiyaz/Workspace/pkg/mod/github.com/gin-gonic/gin@v1.6.3/context.go:161 (0x47311ca) (*Context).Next: c.handlers[c.index](c) /Users/imtiyaz/Workspace/pkg/mod/github.com/gin-gonic/gin@v1.6.3/recovery.go:83 (0x47448cf) RecoveryWithWriter.func1: c.Next() /Users/imtiyaz/Workspace/pkg/mod/github.com/gin-gonic/gin@v1.6.3/context.go:161 (0x47311ca) (*Context).Next: c.handlers[c.index](c) /Users/imtiyaz/Workspace/pkg/mod/github.com/gin-gonic/gin@v1.6.3/logger.go:241 (0x4743a00) LoggerWithConfig.func1: c.Next() /Users/imtiyaz/Workspace/pkg/mod/github.com/gin-gonic/gin@v1.6.3/context.go:161 (0x47311ca) (*Context).Next: c.handlers[c.index](c) /Users/imtiyaz/Workspace/pkg/mod/github.com/gin-gonic/gin@v1.6.3/gin.go:409 (0x473afa5) (*Engine).handleHTTPRequest: c.Next() /Users/imtiyaz/Workspace/pkg/mod/github.com/gin-gonic/gin@v1.6.3/gin.go:367 (0x473a6bc) (*Engine).ServeHTTP: engine.handleHTTPRequest(c) /usr/local/go/src/net/http/server.go:2807 (0x42e9d72) serverHandler.ServeHTTP: handler.ServeHTTP(rw, req) /usr/local/go/src/net/http/server.go:1895 (0x42e56eb) (*conn).serve: serverHandler{c.server}.ServeHTTP(w, w.req) /usr/local/go/src/runtime/asm_amd64.s:1373 (0x4063fb0) goexit: BYTE $0x90 // NOP