startRecording not working using RecordRTC with RTCMultiConnection - webrtc

Question

I am trying to record every new session/user added to RTCMultiConnection.
i am using the following demo url in application
https://rtcmulticonnection.herokuapp.com/demos/Audio+Video+TextChat+FileSharing.html
Now i have added the following cdn reference to the code.
https://cdn.webrtc-experiment.com/RecordRTC.js
and this is the code i am working with but connection.streams[event.streamid].startRecording(); is not working.
// ..................RTCMultiConnection Code.............
// ......................................................
var connection = new RTCMultiConnection();
var btnStopRec = document.getElementById("btnStopRecording");
connection.socketURL = 'https://rtcmulticonnection.herokuapp.com:443/';
connection.enableFileSharing = true;
connection.session = {
audio: true,
video: true,
data: true,
};
connection.sdpConstraints.mandatory = {
OfferToReceiveAudio: true,
OfferToReceiveVideo: true,
};
connection.onstream = function (event)
{
document.body.appendChild(event.mediaElement);
console.log("stream recording starts")
connection.streams[event.streamid].startRecording();
console.log("stream recording started")
}

Answer 1

I included all possible situations in a single snippet, below. Please take only the code that you need:
// global object that contains multiple recorders
var recorders = {};
// auto start recorder as soon as stream starts/begins
connection.onstream = function(event) {
document.body.appendChild(event.mediaElement);
recorders[event.streamid] = RecordRTC(event.stream, {
type: 'video'
});
recorders[event.streamid].startRecording();
};
// auto stop recorder as soon as stream stops/ends
connection.onstreamended = function(event) {
if (recorders[event.streamid]) {
recorders[event.streamid].stopRecording(function() {
var blob = recorders[event.streamid].getBlob();
var url = URL.createObjectURL(blob);
window.open(url);
delete recorders[streamid]; // clear
});
}
if (event.mediaElement.parentNode) {
event.mediaElement.parentNode.removeChild(event.mediaElement);
}
};
// stop single recorder
document.getElementById('manually-stop-single-recording').onclick = function() {
var streamid = prompt('Enter streamid');
recorders[streamid].stopRecording(function() {
var blob = recorders[streamid].getBlob();
var url = URL.createObjectURL(blob);
window.open(url);
delete recorders[streamid]; // clear
});
};
// stop all recorders
document.getElementById('manually-stop-all-recordings').onclick = function() {
Object.keys(recorders).forEach(function(streamid) {
recorders[streamid].stopRecording(function() {
var blob = recorders[streamid].getBlob();
var url = URL.createObjectURL(blob);
window.open(url);
delete recorders[streamid]; // clear
});
});
};
// record outside onstream event
// i.e. start recording anytime manually
document.getElementById('record-stream-outside-the-onstream-event').onclick = function() {
var streamid = prompt('Enter streamid');
var stream = connection.streamEvents[streamid].stream;
recorders[streamid] = RecordRTC(stream, {
type: 'video'
});
recorders[streamid].startRecording();
};