webrtc over tcp (tcp connection was frequently disconnected )

[gavin88]

Description

In the process of using webrtc over tcp. we found that the tcp connection was frequently disconnected during an irregular periods of time. The server seems to destroy the rtc session without giving the client a chance to reconnect.

1. SRS Version: SRS/5.0.170(Bee)

2. SRS Log:

[2023-08-17 13:17:48.345][INFO][1][23gh7t50] TCP: before dispose resource(Tcp)(0x60c000027d00), conns=5, zombies=0, ign=0, inz=0, ind=0
�[31m[2023-08-17 13:17:48.345][ERROR][1][q5ln2h46][0] serve error code=1070(StThreadInterrupt)(ST thread is interrupted) : rtc tcp conn : interrupted
thread [1][q5ln2h46]: do_cycle() [./src/app/srs_app_rtc_network.cpp:811][errno=0]
thread [1][q5ln2h46]: interrupt() [./src/app/srs_app_st.cpp:257][errno=0]

Additional error log, It may not be the core error log, it may be just a normal prompt.

[2023-08-17 12:34:27.173][ERROR][1][q8b9918f][11] serve error code=5035(RtcUnique)(RTC only support one UDP or TCP network) : process rtc tcp pkt : only support one network
thread [1][q8b9918f]: do_cycle() [./src/app/srs_app_rtc_network.cpp:805][errno=11]
thread [1][q8b9918f]: handshake() [./src/app/srs_app_rtc_network.cpp:867][errno=11](Resource temporarily unavailable)

[31m[2023-08-17 13:19:33.442][ERROR][1][23gh7t50][11] serve error code=5034(RtcTcpSession)(RTC TCP packet is invalid for session not found) : process rtc tcp pkt : no session, stun username=nr555r47:A+It
thread [1][23gh7t50]: do_cycle() [./src/app/srs_app_rtc_network.cpp:805][errno=11]
thread [1][23gh7t50]: handshake() [./src/app/srs_app_rtc_network.cpp:853][errno=11](Resource temporarily unavailable)

3. SRS Config:

rtc_server {
    enabled         on;
    listen 19000; 
    tcp {
        enabled on;
        listen 19000;
    }
    protocol tcp;
    candidate   xx.xx.xx.xx;
}

Replay

Step 1: webrtc over tcp streaming normally

Step 2: switch the network

Step 3: the connnection is disconnected and the stream needs to be republish.

Expect

Hope to be able to use webrtc over tcp for stable communication.

[yiippee]

me too

[Li20230828]

I got the error when I use the same TCP port for API and webRTC

[winlinvip]

Duplicated to #3784