Keep alive response is not effective

Realtime Media Streams
1

Hello
Iam doing RTMS with ZCC, using raw websocket spec, no sdk

Iam successfully done all the signalling and media handshakes, also getting the audio as expected. However, the Keep-Alive does not work for me. After 5 keep-alive requests which are all responsed back, the server actively closed the connection

Request:{"msg_type":12,"sequence":0,"timestamp":1782958602937}
Response:{"msg_type":13,"timestamp":1782958602937}
Request:{"msg_type":12,"sequence":1,"timestamp":1782958612938}
Response:{"msg_type":13,"timestamp":1782958612938}
Request:{"msg_type":12,"sequence":2,"timestamp":1782958622939}
Response:{"msg_type":13,"timestamp":1782958622939}
Request:{"msg_type":12,"sequence":3,"timestamp":1782958632947}
Response:{"msg_type":13,"timestamp":1782958632947}
Request:{"msg_type":12,"sequence":4,"timestamp":1782958642943}
Response:{"msg_type":13,"timestamp":1782958642943}

I do have extract the timestamp from request message for the response
I also tried to extract “sequence” from the request and have it in the response, but did not help
Please advise
Thank you

2

@MinhCm this looks ok, for the keep alive you need to respond to both signaling and media server.

If you are using raw websocket instead of SDK, you can take a look at some of the samples here

in NodeJS, I’m doing something like this . Both of them do similar things, just that there is slight variations in programming style.

//media server

if (msg.msg_type === 12) {
mediaWs.send(JSON.stringify({
msg_type: 13,
timestamp: msg.timestamp,
}));
}

//signaling server
// Respond to keep-alive requests
if (msg.msg_type === 12) { // KEEP_ALIVE_REQ
const keepAliveResponse = {
msg_type: 13, // KEEP_ALIVE_RESP
timestamp: msg.timestamp,
};
console.log(‘Responding to Signaling KEEP_ALIVE_REQ:’, keepAliveResponse);
ws.send(JSON.stringify(keepAliveResponse));
}