binding request timeout

[laumy007]

两个设备属于对称型穿透，采集端的设备使用stun链接，接收端的设备使用turn链接，通过turn服务帮忙转发，发现测试一段时间后流就异常停止了，设备端打印“binding request timeout”，状态切换为closed，问题是必现的，不知是否有什么排查方法。

DEBUG libpeer/src/peer_connection.c 426 agent_recv 70
DEBUG libpeer/src/peer_connection.c 429 Got RTCP packet
DEBUG libpeer/src/peer_connection.c 103 RTCP_PR
DEBUG libpeer/src/peer_connection.c 119 RTCP_PSFB 15
DEBUG libpeer/src/peer_connection.c 426 agent_recv 70
DEBUG libpeer/src/peer_connection.c 429 Got RTCP packet
DEBUG libpeer/src/peer_connection.c 103 RTCP_PR
DEBUG libpeer/src/peer_connection.c 119 RTCP_PSFB 15
DEBUG libpeer/src/peer_connection.c 426 agent_recv 70
DEBUG libpeer/src/peer_connection.c 429 Got RTCP packet
DEBUG libpeer/src/peer_connection.c 103 RTCP_PR
DEBUG libpeer/src/peer_connection.c 119 RTCP_PSFB 15
DEBUG libpeer/src/peer_connection.c 426 agent_recv 61
DEBUG libpeer/src/dtls_srtp.c 485 DTLS content type: 23
DEBUG libpeer/src/peer_connection.c 435 Got DTLS data 32
DEBUG libpeer/src/sctp.c 451 Data of length 4 received on stream 0 with SSN 39, TSN 703256564, PPID 51
DEBUG libpeer/src/sctp.c 401 Got message (size = 4)
on message: 0 ping, send pong
DEBUG libpeer/src/peer_connection.c 426 agent_recv 70
DEBUG libpeer/src/peer_connection.c 429 Got RTCP packet
DEBUG libpeer/src/peer_connection.c 103 RTCP_PR
DEBUG libpeer/src/peer_connection.c 119 RTCP_PSFB 15
DEBUG libpeer/src/peer_connection.c 426 agent_recv 57
DEBUG libpeer/src/dtls_srtp.c 485 DTLS content type: 23
DEBUG libpeer/src/peer_connection.c 435 Got DTLS data 28
DEBUG libpeer/src/sctp.c 451 Data of length 12 received on stream 0 with SSN 0, TSN 0, PPID 0
DEBUG libpeer/src/peer_connection.c 426 agent_recv 70
DEBUG libpeer/src/peer_connection.c 429 Got RTCP packet
DEBUG libpeer/src/peer_connection.c 103 RTCP_PR
DEBUG libpeer/src/peer_connection.c 119 RTCP_PSFB 15
DEBUG libpeer/src/peer_connection.c 426 agent_recv 70
DEBUG libpeer/src/peer_connection.c 429 Got RTCP packet
DEBUG libpeer/src/peer_connection.c 103 RTCP_PR
DEBUG libpeer/src/peer_connection.c 119 RTCP_PSFB 15
INFO libpeer/src/peer_connection.c 459 binding request timeout
state is changed: closed

[topworldcoder]

Hi, I have a few suggestions maybe can help you figure out something.

First, you can modify the code like:

if ((pc->agent_ret = agent_recv(&pc->agent, pc->agent_buf, sizeof(pc->agent_buf))) > 0) {
codes ...
} else { // do that in else case only, maybe not a good idea.
if (KEEPALIVE_CONNCHECK > 0 && (ports_get_epoch_time() - pc->agent.binding_request_time) > KEEPALIVE_CONNCHECK) {
LOGI("binding request timeout");
STATE_CHANGED(pc, PEER_CONNECTION_CLOSED);
}
}

Second, you can set KEEPALIVE_CONNCHECK to a larger interval, like 90000.
Third, you can see that 'agent->binding_request_time' is set in function 'agent_process_stun_request' when processing STUN_METHOD_BINDING, you can add logs before and after 'stun_msg_is_valid' like 'LOGD("stun request in STUN_METHOD_BINDING:%d", stun_msg->stunmethod);' to check if msg exists.

After these changes, does this still happen?

[laumy007]

来信已经收到！