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webrtc: accept iceServers: [] provided in POST /webrtc, support trickle ICE

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Thanks https://github.com/ayufan/camera-streamer/pull/65
This commit is contained in:
Kamil Trzcinski
2023-06-13 20:34:45 +02:00
parent e8ffe47343
commit 272b16ee1c
7 changed files with 239 additions and 104 deletions
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43
html/control.html
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@ -759,8 +759,11 @@
method: 'POST'
}).then(function(response) {
return response.json();
}).then(function(answer) {
rtcPeerConnection = new RTCPeerConnection(rtcPeerConfig);
}).then(function(request) {
rtcPeerConnection = new RTCPeerConnection({
sdpSemantics: 'unified-plan',
iceServers: request.iceServers
});
rtcPeerConnection.addTransceiver('video', { direction: 'recvonly' });
//pc.addTransceiver('audio', {direction: 'recvonly'});
rtcPeerConnection.addEventListener('track', function(evt) {
@ -771,27 +774,27 @@
view.scrollIntoView(false);
}
});
rtcPeerConnection.remote_pc_id = answer.id;
return rtcPeerConnection.setRemoteDescription(answer);
rtcPeerConnection.addEventListener("icecandidate", function(e) {
if (e.candidate) {
return fetch(webrtcURL, {
body: JSON.stringify({
type: 'remote_candidate',
id: rtcPeerConnection.remote_pc_id,
candidates: [e.candidate]
}),
headers: { 'Content-Type': 'application/json' },
method: 'POST'
}).catch(function(e) {
console.log("Failed to send ICE WebRTC: "+e);
});
}
});
rtcPeerConnection.remote_pc_id = request.id;
return rtcPeerConnection.setRemoteDescription(request);
}).then(function() {
return rtcPeerConnection.createAnswer();
}).then(function(answer) {
return rtcPeerConnection.setLocalDescription(answer);
}).then(function() {
// wait for ICE gathering to complete
return new Promise(function(resolve) {
if (rtcPeerConnection.iceGatheringState === 'complete') {
resolve();
} else {
function checkState() {
if (rtcPeerConnection.iceGatheringState === 'complete') {
rtcPeerConnection.removeEventListener('icegatheringstatechange', checkState);
resolve();
}
}
rtcPeerConnection.addEventListener('icegatheringstatechange', checkState);
}
});
}).then(function(answer) {
var offer = rtcPeerConnection.localDescription;
@ -807,7 +810,7 @@
}).then(function(response) {
return response.json();
}).catch(function(e) {
alert(e);
console.log(e);
});
}
})