Xirsys WebRTC can't find sdp object











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I'm trying to test an example provided by Xirsys where I can proceed with signaling using only PHP. The ice servers / token and host seems to work perfectly, but when trying to connect it returns "uncaught: Typeerror: cannot read property 'sdp' of null. The object it doesn't seem null, not sure what is happening here.
Follow my code:



    <html>

<head>

    <title>PHP Xirsys</title>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

</head>

<body>

<div class="panel" id="video-wrapper">

<style>

    video {

        background: #cccccc;

        width: 200px;

    }

</style>



<div class="col">

    <div>

        your message: <input type="text" id="newMessage" disabled />

        <button id="sendButton" onclick="send()" disabled>send</button>

    </div>



    <div id="messages"></div>

</div>

<div id="videos">

    <video autoplay="true" id="localVideo"></video>

</div>



<div>

    username: <input type="text" id="username" />

    <button id="connectButton" onclick="connect()">connect</button>

</div>



<script>

    var token;

    var socket;

    var ice;

    var pcs = {};

    var localUsername;



    function displayMessage(message) {

        $('#messages')[0].innerHTML += message + "<br>";

    }



    window.onload = () => {

        $.post("getice.php", null, r => onIce(r));

    }



    function onIce(r) {

        ice = JSON.parse(r).v;

        navigator.mediaDevices.getUserMedia({audio: true, video: true}).then(stream => onGetMedia(stream));

    }



    function connect() {

        localUsername = $('#username')[0].value;

        $.post("gettoken.php", {username: localUsername}, r => getHost(r));

    }



    function getHost(r) {

        token = JSON.parse(r).v;

        $.post("gethost.php", {username: localUsername}, r => openSocket(r));

    }



    function openSocket(r) {

        var host = JSON.parse(r).v;

        socket = new WebSocket(host + "/v2/" + token);

        socket.addEventListener("message", onSocketMessage);

    }



    function onSocketMessage(evt) {

        var data = JSON.parse(evt.data);

        var option;

        var pc;

        switch (data.m.o) {

            case "peers":

                var users = data.p.users;

                for(i = 0; i < users.length; i++) {

                    displayMessage("user in chat:" + users[i]);

                }

                break;

            case "peer_connected":

                var f = data.m.f.split("/");

                var joining = f[f.length-1];

                displayMessage("new user joined: " + joining)

                callPeer(joining);

                break;

            case "message":

                switch(data.p.msg.type) {

                    case "offer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pc = createNewPeerConnection(sender);

                        pc.setRemoteDescription(desc);

                        pc.createAnswer().then(d => onCreateAnswer(d,sender));

                        break;

                    case "answer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pcs[sender].pc.setRemoteDescription(desc);

                        break;

                    case "candidate":

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        var candidate = new RTCIceCandidate(data.p.msg);

                        pcs[sender].pc.addIceCandidate(candidate);

                        break;

                }

        }

    }



    function callPeer(peer) {

        var pc = createNewPeerConnection(peer);

        var dataChannel = pc.createDataChannel("data");

        pcs[peer].dc = dataChannel;

        setDataChannelHandlers(dataChannel);

        pc.createOffer().then(d => onCreateOffer(d, peer));

    }



    function onCreateOffer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onCreateAnswer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onIceCandidate(evt) {

        var remoteUsername = getUsernameByRemoteDescription(evt.target.remoteDescription.sdp);

        var candidate = evt.candidate;

        if (candidate != null && remoteUsername != null) {

            var cPkt = {type: "candidate",

                candidate: candidate.candidate,

                sdpMid: candidate.sdpMid,

                sdpMLineIndex: candidate.sdpMLineIndex

            };

            var pkt = {

                t: "u",

                m: {

                    f: "appchannel/" + localUsername,

                    o: "message",

                    t: remoteUsername

                },

                p: {msg:cPkt}

            }

            socket.send(JSON.stringify(pkt));

        }

    }



    function setDataChannelHandlers(dc) {

        dc.onmessage = evt => onDataMessage(evt);

        dc.onopen = evt => onDataChannelOpen(evt);

    }



    function onDataChannelOpen(evt) {

        $("#newMessage")[0].disabled = false;

        $("#sendButton")[0].disabled = false;

    }



    function onDataChannel(evt) {

        var dataChannel = evt.channel;

        var keys = Object.keys(pcs);

        var comp;

        var localDescription;

        var remoteDescription;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            if(evt.currentTarget.localDescription.sdp == comp.pc.localDescription.sdp) {

                comp.dc = dataChannel;

            }

        }

        setDataChannelHandlers(dataChannel);

    }



    function send() {

        var messageElement = $('#newMessage')[0];

        displayMessage("you said: " + messageElement.value);

        var message = {f: localUsername, msg: messageElement.value};

        messageElement.value = "";

        var dataChannel;

        var keys = Object.keys(pcs);

        var comp;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            dataChannel = comp.dc;

            dataChannel.send(JSON.stringify(message));

        }

    }



    function onDataMessage(evt) {

        var messageObj = JSON.parse(evt.data);

        displayMessage(messageObj.f + " said: " + messageObj.msg);

    }



    function createNewPeerConnection(username){

        var pc = new RTCPeerConnection(ice);

        pc.addStream(localStream);

        pc.onaddstream = evt => onAddStream(evt);

        pc.ondatachannel = evt => onDataChannel(evt);

        pc.onicecandidate = candidate => onIceCandidate(candidate);

        pcs[username] = {pc: pc, dc: null, s: null, v: null};

        return pc;

    }



    function getUsernameByRemoteDescription(sdp) {

        var keys = Object.keys(pcs);

        var pc;

        for(var i = 0; i < keys.length; i++) {

            pc = pcs[keys[i]].pc;

            if(pc.remoteDescription.sdp == sdp) {

                return keys[i];

            }

        }

        return null;

    }



    function onGetMedia(stream) {

        var vid = $("#localVideo")[0];

        vid.srcObject = stream;

        localStream = stream;

    }



    function onAddStream(evt) {

        var pc = evt.target;

        var stream = evt.stream;

        var peer = getUsernameByRemoteDescription(pc.remoteDescription.sdp);

        pcs[peer].s = stream;

        var v = addNewVideo(stream);

        pcs[peer].v = v;

    }



    function addNewVideo(stream) {

        var vid = document.createElement("video");

        $("#videos")[0].appendChild(vid);

        vid.srcObject = stream;

        return vid;

    }

</script>

</div>

</body>

</html>


getice.php



<?php

$curl = curl_init();

curl_setopt_array( $curl, array (

 CURLOPT_URL =>

"https://global.xirsys.net/_turn/appchannel/",

 CURLOPT_USERPWD => "account:key",

 CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

 CURLOPT_CUSTOMREQUEST => "PUT",

 CURLOPT_RETURNTRANSFER => 1

));

$resp = curl_exec($curl);

print $resp;

curl_close($curl);

?>


gettoken.php



$data = array( 'k' => $_POST["username"], 'expire' => 45, 'depth' => 10 );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_token/appchannel?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'PUT'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


gethost.php



$data = array( 'k' => $_POST["username"], 'type' => 'signal' );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_host?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'GET'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


Edit: errors -> on Chrome / Firefox
on Chromeon Firefox






javascript php webrtc xirsys







share|improve this question
























  • You're going to have to try to narrow this down a bit... we don't have any way of reproducing this issue.
    – Brad
    Nov 22 at 2:32










  • You are right @Brad, actually, I'm a bit lost, I'm not sure how to summarize this... With an account and keys, you will be able to run the code on your side. Is that helps?
    – Igor O
    Nov 22 at 3:02






  • 1




    No, that doesn't help. Figure out what evt.target is, ensure it's what you expect, figure out why remoteDescription is null, narrow this problem down.
    – Brad
    Nov 22 at 3:04















up vote
0
down vote

favorite












I'm trying to test an example provided by Xirsys where I can proceed with signaling using only PHP. The ice servers / token and host seems to work perfectly, but when trying to connect it returns "uncaught: Typeerror: cannot read property 'sdp' of null. The object it doesn't seem null, not sure what is happening here.
Follow my code:



    <html>

<head>

    <title>PHP Xirsys</title>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

</head>

<body>

<div class="panel" id="video-wrapper">

<style>

    video {

        background: #cccccc;

        width: 200px;

    }

</style>



<div class="col">

    <div>

        your message: <input type="text" id="newMessage" disabled />

        <button id="sendButton" onclick="send()" disabled>send</button>

    </div>



    <div id="messages"></div>

</div>

<div id="videos">

    <video autoplay="true" id="localVideo"></video>

</div>



<div>

    username: <input type="text" id="username" />

    <button id="connectButton" onclick="connect()">connect</button>

</div>



<script>

    var token;

    var socket;

    var ice;

    var pcs = {};

    var localUsername;



    function displayMessage(message) {

        $('#messages')[0].innerHTML += message + "<br>";

    }



    window.onload = () => {

        $.post("getice.php", null, r => onIce(r));

    }



    function onIce(r) {

        ice = JSON.parse(r).v;

        navigator.mediaDevices.getUserMedia({audio: true, video: true}).then(stream => onGetMedia(stream));

    }



    function connect() {

        localUsername = $('#username')[0].value;

        $.post("gettoken.php", {username: localUsername}, r => getHost(r));

    }



    function getHost(r) {

        token = JSON.parse(r).v;

        $.post("gethost.php", {username: localUsername}, r => openSocket(r));

    }



    function openSocket(r) {

        var host = JSON.parse(r).v;

        socket = new WebSocket(host + "/v2/" + token);

        socket.addEventListener("message", onSocketMessage);

    }



    function onSocketMessage(evt) {

        var data = JSON.parse(evt.data);

        var option;

        var pc;

        switch (data.m.o) {

            case "peers":

                var users = data.p.users;

                for(i = 0; i < users.length; i++) {

                    displayMessage("user in chat:" + users[i]);

                }

                break;

            case "peer_connected":

                var f = data.m.f.split("/");

                var joining = f[f.length-1];

                displayMessage("new user joined: " + joining)

                callPeer(joining);

                break;

            case "message":

                switch(data.p.msg.type) {

                    case "offer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pc = createNewPeerConnection(sender);

                        pc.setRemoteDescription(desc);

                        pc.createAnswer().then(d => onCreateAnswer(d,sender));

                        break;

                    case "answer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pcs[sender].pc.setRemoteDescription(desc);

                        break;

                    case "candidate":

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        var candidate = new RTCIceCandidate(data.p.msg);

                        pcs[sender].pc.addIceCandidate(candidate);

                        break;

                }

        }

    }



    function callPeer(peer) {

        var pc = createNewPeerConnection(peer);

        var dataChannel = pc.createDataChannel("data");

        pcs[peer].dc = dataChannel;

        setDataChannelHandlers(dataChannel);

        pc.createOffer().then(d => onCreateOffer(d, peer));

    }



    function onCreateOffer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onCreateAnswer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onIceCandidate(evt) {

        var remoteUsername = getUsernameByRemoteDescription(evt.target.remoteDescription.sdp);

        var candidate = evt.candidate;

        if (candidate != null && remoteUsername != null) {

            var cPkt = {type: "candidate",

                candidate: candidate.candidate,

                sdpMid: candidate.sdpMid,

                sdpMLineIndex: candidate.sdpMLineIndex

            };

            var pkt = {

                t: "u",

                m: {

                    f: "appchannel/" + localUsername,

                    o: "message",

                    t: remoteUsername

                },

                p: {msg:cPkt}

            }

            socket.send(JSON.stringify(pkt));

        }

    }



    function setDataChannelHandlers(dc) {

        dc.onmessage = evt => onDataMessage(evt);

        dc.onopen = evt => onDataChannelOpen(evt);

    }



    function onDataChannelOpen(evt) {

        $("#newMessage")[0].disabled = false;

        $("#sendButton")[0].disabled = false;

    }



    function onDataChannel(evt) {

        var dataChannel = evt.channel;

        var keys = Object.keys(pcs);

        var comp;

        var localDescription;

        var remoteDescription;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            if(evt.currentTarget.localDescription.sdp == comp.pc.localDescription.sdp) {

                comp.dc = dataChannel;

            }

        }

        setDataChannelHandlers(dataChannel);

    }



    function send() {

        var messageElement = $('#newMessage')[0];

        displayMessage("you said: " + messageElement.value);

        var message = {f: localUsername, msg: messageElement.value};

        messageElement.value = "";

        var dataChannel;

        var keys = Object.keys(pcs);

        var comp;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            dataChannel = comp.dc;

            dataChannel.send(JSON.stringify(message));

        }

    }



    function onDataMessage(evt) {

        var messageObj = JSON.parse(evt.data);

        displayMessage(messageObj.f + " said: " + messageObj.msg);

    }



    function createNewPeerConnection(username){

        var pc = new RTCPeerConnection(ice);

        pc.addStream(localStream);

        pc.onaddstream = evt => onAddStream(evt);

        pc.ondatachannel = evt => onDataChannel(evt);

        pc.onicecandidate = candidate => onIceCandidate(candidate);

        pcs[username] = {pc: pc, dc: null, s: null, v: null};

        return pc;

    }



    function getUsernameByRemoteDescription(sdp) {

        var keys = Object.keys(pcs);

        var pc;

        for(var i = 0; i < keys.length; i++) {

            pc = pcs[keys[i]].pc;

            if(pc.remoteDescription.sdp == sdp) {

                return keys[i];

            }

        }

        return null;

    }



    function onGetMedia(stream) {

        var vid = $("#localVideo")[0];

        vid.srcObject = stream;

        localStream = stream;

    }



    function onAddStream(evt) {

        var pc = evt.target;

        var stream = evt.stream;

        var peer = getUsernameByRemoteDescription(pc.remoteDescription.sdp);

        pcs[peer].s = stream;

        var v = addNewVideo(stream);

        pcs[peer].v = v;

    }



    function addNewVideo(stream) {

        var vid = document.createElement("video");

        $("#videos")[0].appendChild(vid);

        vid.srcObject = stream;

        return vid;

    }

</script>

</div>

</body>

</html>


getice.php



<?php

$curl = curl_init();

curl_setopt_array( $curl, array (

 CURLOPT_URL =>

"https://global.xirsys.net/_turn/appchannel/",

 CURLOPT_USERPWD => "account:key",

 CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

 CURLOPT_CUSTOMREQUEST => "PUT",

 CURLOPT_RETURNTRANSFER => 1

));

$resp = curl_exec($curl);

print $resp;

curl_close($curl);

?>


gettoken.php



$data = array( 'k' => $_POST["username"], 'expire' => 45, 'depth' => 10 );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_token/appchannel?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'PUT'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


gethost.php



$data = array( 'k' => $_POST["username"], 'type' => 'signal' );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_host?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'GET'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


Edit: errors -> on Chrome / Firefox
on Chromeon Firefox






javascript php webrtc xirsys







share|improve this question
























  • You're going to have to try to narrow this down a bit... we don't have any way of reproducing this issue.
    – Brad
    Nov 22 at 2:32










  • You are right @Brad, actually, I'm a bit lost, I'm not sure how to summarize this... With an account and keys, you will be able to run the code on your side. Is that helps?
    – Igor O
    Nov 22 at 3:02






  • 1




    No, that doesn't help. Figure out what evt.target is, ensure it's what you expect, figure out why remoteDescription is null, narrow this problem down.
    – Brad
    Nov 22 at 3:04













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm trying to test an example provided by Xirsys where I can proceed with signaling using only PHP. The ice servers / token and host seems to work perfectly, but when trying to connect it returns "uncaught: Typeerror: cannot read property 'sdp' of null. The object it doesn't seem null, not sure what is happening here.
Follow my code:



    <html>

<head>

    <title>PHP Xirsys</title>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

</head>

<body>

<div class="panel" id="video-wrapper">

<style>

    video {

        background: #cccccc;

        width: 200px;

    }

</style>



<div class="col">

    <div>

        your message: <input type="text" id="newMessage" disabled />

        <button id="sendButton" onclick="send()" disabled>send</button>

    </div>



    <div id="messages"></div>

</div>

<div id="videos">

    <video autoplay="true" id="localVideo"></video>

</div>



<div>

    username: <input type="text" id="username" />

    <button id="connectButton" onclick="connect()">connect</button>

</div>



<script>

    var token;

    var socket;

    var ice;

    var pcs = {};

    var localUsername;



    function displayMessage(message) {

        $('#messages')[0].innerHTML += message + "<br>";

    }



    window.onload = () => {

        $.post("getice.php", null, r => onIce(r));

    }



    function onIce(r) {

        ice = JSON.parse(r).v;

        navigator.mediaDevices.getUserMedia({audio: true, video: true}).then(stream => onGetMedia(stream));

    }



    function connect() {

        localUsername = $('#username')[0].value;

        $.post("gettoken.php", {username: localUsername}, r => getHost(r));

    }



    function getHost(r) {

        token = JSON.parse(r).v;

        $.post("gethost.php", {username: localUsername}, r => openSocket(r));

    }



    function openSocket(r) {

        var host = JSON.parse(r).v;

        socket = new WebSocket(host + "/v2/" + token);

        socket.addEventListener("message", onSocketMessage);

    }



    function onSocketMessage(evt) {

        var data = JSON.parse(evt.data);

        var option;

        var pc;

        switch (data.m.o) {

            case "peers":

                var users = data.p.users;

                for(i = 0; i < users.length; i++) {

                    displayMessage("user in chat:" + users[i]);

                }

                break;

            case "peer_connected":

                var f = data.m.f.split("/");

                var joining = f[f.length-1];

                displayMessage("new user joined: " + joining)

                callPeer(joining);

                break;

            case "message":

                switch(data.p.msg.type) {

                    case "offer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pc = createNewPeerConnection(sender);

                        pc.setRemoteDescription(desc);

                        pc.createAnswer().then(d => onCreateAnswer(d,sender));

                        break;

                    case "answer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pcs[sender].pc.setRemoteDescription(desc);

                        break;

                    case "candidate":

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        var candidate = new RTCIceCandidate(data.p.msg);

                        pcs[sender].pc.addIceCandidate(candidate);

                        break;

                }

        }

    }



    function callPeer(peer) {

        var pc = createNewPeerConnection(peer);

        var dataChannel = pc.createDataChannel("data");

        pcs[peer].dc = dataChannel;

        setDataChannelHandlers(dataChannel);

        pc.createOffer().then(d => onCreateOffer(d, peer));

    }



    function onCreateOffer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onCreateAnswer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onIceCandidate(evt) {

        var remoteUsername = getUsernameByRemoteDescription(evt.target.remoteDescription.sdp);

        var candidate = evt.candidate;

        if (candidate != null && remoteUsername != null) {

            var cPkt = {type: "candidate",

                candidate: candidate.candidate,

                sdpMid: candidate.sdpMid,

                sdpMLineIndex: candidate.sdpMLineIndex

            };

            var pkt = {

                t: "u",

                m: {

                    f: "appchannel/" + localUsername,

                    o: "message",

                    t: remoteUsername

                },

                p: {msg:cPkt}

            }

            socket.send(JSON.stringify(pkt));

        }

    }



    function setDataChannelHandlers(dc) {

        dc.onmessage = evt => onDataMessage(evt);

        dc.onopen = evt => onDataChannelOpen(evt);

    }



    function onDataChannelOpen(evt) {

        $("#newMessage")[0].disabled = false;

        $("#sendButton")[0].disabled = false;

    }



    function onDataChannel(evt) {

        var dataChannel = evt.channel;

        var keys = Object.keys(pcs);

        var comp;

        var localDescription;

        var remoteDescription;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            if(evt.currentTarget.localDescription.sdp == comp.pc.localDescription.sdp) {

                comp.dc = dataChannel;

            }

        }

        setDataChannelHandlers(dataChannel);

    }



    function send() {

        var messageElement = $('#newMessage')[0];

        displayMessage("you said: " + messageElement.value);

        var message = {f: localUsername, msg: messageElement.value};

        messageElement.value = "";

        var dataChannel;

        var keys = Object.keys(pcs);

        var comp;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            dataChannel = comp.dc;

            dataChannel.send(JSON.stringify(message));

        }

    }



    function onDataMessage(evt) {

        var messageObj = JSON.parse(evt.data);

        displayMessage(messageObj.f + " said: " + messageObj.msg);

    }



    function createNewPeerConnection(username){

        var pc = new RTCPeerConnection(ice);

        pc.addStream(localStream);

        pc.onaddstream = evt => onAddStream(evt);

        pc.ondatachannel = evt => onDataChannel(evt);

        pc.onicecandidate = candidate => onIceCandidate(candidate);

        pcs[username] = {pc: pc, dc: null, s: null, v: null};

        return pc;

    }



    function getUsernameByRemoteDescription(sdp) {

        var keys = Object.keys(pcs);

        var pc;

        for(var i = 0; i < keys.length; i++) {

            pc = pcs[keys[i]].pc;

            if(pc.remoteDescription.sdp == sdp) {

                return keys[i];

            }

        }

        return null;

    }



    function onGetMedia(stream) {

        var vid = $("#localVideo")[0];

        vid.srcObject = stream;

        localStream = stream;

    }



    function onAddStream(evt) {

        var pc = evt.target;

        var stream = evt.stream;

        var peer = getUsernameByRemoteDescription(pc.remoteDescription.sdp);

        pcs[peer].s = stream;

        var v = addNewVideo(stream);

        pcs[peer].v = v;

    }



    function addNewVideo(stream) {

        var vid = document.createElement("video");

        $("#videos")[0].appendChild(vid);

        vid.srcObject = stream;

        return vid;

    }

</script>

</div>

</body>

</html>


getice.php



<?php

$curl = curl_init();

curl_setopt_array( $curl, array (

 CURLOPT_URL =>

"https://global.xirsys.net/_turn/appchannel/",

 CURLOPT_USERPWD => "account:key",

 CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

 CURLOPT_CUSTOMREQUEST => "PUT",

 CURLOPT_RETURNTRANSFER => 1

));

$resp = curl_exec($curl);

print $resp;

curl_close($curl);

?>


gettoken.php



$data = array( 'k' => $_POST["username"], 'expire' => 45, 'depth' => 10 );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_token/appchannel?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'PUT'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


gethost.php



$data = array( 'k' => $_POST["username"], 'type' => 'signal' );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_host?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'GET'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


Edit: errors -> on Chrome / Firefox
on Chromeon Firefox






javascript php webrtc xirsys







share|improve this question















I'm trying to test an example provided by Xirsys where I can proceed with signaling using only PHP. The ice servers / token and host seems to work perfectly, but when trying to connect it returns "uncaught: Typeerror: cannot read property 'sdp' of null. The object it doesn't seem null, not sure what is happening here.
Follow my code:



    <html>

<head>

    <title>PHP Xirsys</title>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

</head>

<body>

<div class="panel" id="video-wrapper">

<style>

    video {

        background: #cccccc;

        width: 200px;

    }

</style>



<div class="col">

    <div>

        your message: <input type="text" id="newMessage" disabled />

        <button id="sendButton" onclick="send()" disabled>send</button>

    </div>



    <div id="messages"></div>

</div>

<div id="videos">

    <video autoplay="true" id="localVideo"></video>

</div>



<div>

    username: <input type="text" id="username" />

    <button id="connectButton" onclick="connect()">connect</button>

</div>



<script>

    var token;

    var socket;

    var ice;

    var pcs = {};

    var localUsername;



    function displayMessage(message) {

        $('#messages')[0].innerHTML += message + "<br>";

    }



    window.onload = () => {

        $.post("getice.php", null, r => onIce(r));

    }



    function onIce(r) {

        ice = JSON.parse(r).v;

        navigator.mediaDevices.getUserMedia({audio: true, video: true}).then(stream => onGetMedia(stream));

    }



    function connect() {

        localUsername = $('#username')[0].value;

        $.post("gettoken.php", {username: localUsername}, r => getHost(r));

    }



    function getHost(r) {

        token = JSON.parse(r).v;

        $.post("gethost.php", {username: localUsername}, r => openSocket(r));

    }



    function openSocket(r) {

        var host = JSON.parse(r).v;

        socket = new WebSocket(host + "/v2/" + token);

        socket.addEventListener("message", onSocketMessage);

    }



    function onSocketMessage(evt) {

        var data = JSON.parse(evt.data);

        var option;

        var pc;

        switch (data.m.o) {

            case "peers":

                var users = data.p.users;

                for(i = 0; i < users.length; i++) {

                    displayMessage("user in chat:" + users[i]);

                }

                break;

            case "peer_connected":

                var f = data.m.f.split("/");

                var joining = f[f.length-1];

                displayMessage("new user joined: " + joining)

                callPeer(joining);

                break;

            case "message":

                switch(data.p.msg.type) {

                    case "offer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pc = createNewPeerConnection(sender);

                        pc.setRemoteDescription(desc);

                        pc.createAnswer().then(d => onCreateAnswer(d,sender));

                        break;

                    case "answer":

                        var desc = new RTCSessionDescription(data.p.msg);

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        pcs[sender].pc.setRemoteDescription(desc);

                        break;

                    case "candidate":

                        var f = data.m.f.split("/");

                        var sender = f[f.length-1];

                        var candidate = new RTCIceCandidate(data.p.msg);

                        pcs[sender].pc.addIceCandidate(candidate);

                        break;

                }

        }

    }



    function callPeer(peer) {

        var pc = createNewPeerConnection(peer);

        var dataChannel = pc.createDataChannel("data");

        pcs[peer].dc = dataChannel;

        setDataChannelHandlers(dataChannel);

        pc.createOffer().then(d => onCreateOffer(d, peer));

    }



    function onCreateOffer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onCreateAnswer(d, peer) {

        pcs[peer].pc.setLocalDescription(d);

        var pkt = {t: "u", m: {f: "appchannel/" + localUsername, o: "message", t: peer}, p: {msg:d}};

        socket.send(JSON.stringify(pkt));

    }



    function onIceCandidate(evt) {

        var remoteUsername = getUsernameByRemoteDescription(evt.target.remoteDescription.sdp);

        var candidate = evt.candidate;

        if (candidate != null && remoteUsername != null) {

            var cPkt = {type: "candidate",

                candidate: candidate.candidate,

                sdpMid: candidate.sdpMid,

                sdpMLineIndex: candidate.sdpMLineIndex

            };

            var pkt = {

                t: "u",

                m: {

                    f: "appchannel/" + localUsername,

                    o: "message",

                    t: remoteUsername

                },

                p: {msg:cPkt}

            }

            socket.send(JSON.stringify(pkt));

        }

    }



    function setDataChannelHandlers(dc) {

        dc.onmessage = evt => onDataMessage(evt);

        dc.onopen = evt => onDataChannelOpen(evt);

    }



    function onDataChannelOpen(evt) {

        $("#newMessage")[0].disabled = false;

        $("#sendButton")[0].disabled = false;

    }



    function onDataChannel(evt) {

        var dataChannel = evt.channel;

        var keys = Object.keys(pcs);

        var comp;

        var localDescription;

        var remoteDescription;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            if(evt.currentTarget.localDescription.sdp == comp.pc.localDescription.sdp) {

                comp.dc = dataChannel;

            }

        }

        setDataChannelHandlers(dataChannel);

    }



    function send() {

        var messageElement = $('#newMessage')[0];

        displayMessage("you said: " + messageElement.value);

        var message = {f: localUsername, msg: messageElement.value};

        messageElement.value = "";

        var dataChannel;

        var keys = Object.keys(pcs);

        var comp;

        for(var i = 0; i < keys.length; i++) {

            comp = pcs[keys[i]];

            dataChannel = comp.dc;

            dataChannel.send(JSON.stringify(message));

        }

    }



    function onDataMessage(evt) {

        var messageObj = JSON.parse(evt.data);

        displayMessage(messageObj.f + " said: " + messageObj.msg);

    }



    function createNewPeerConnection(username){

        var pc = new RTCPeerConnection(ice);

        pc.addStream(localStream);

        pc.onaddstream = evt => onAddStream(evt);

        pc.ondatachannel = evt => onDataChannel(evt);

        pc.onicecandidate = candidate => onIceCandidate(candidate);

        pcs[username] = {pc: pc, dc: null, s: null, v: null};

        return pc;

    }



    function getUsernameByRemoteDescription(sdp) {

        var keys = Object.keys(pcs);

        var pc;

        for(var i = 0; i < keys.length; i++) {

            pc = pcs[keys[i]].pc;

            if(pc.remoteDescription.sdp == sdp) {

                return keys[i];

            }

        }

        return null;

    }



    function onGetMedia(stream) {

        var vid = $("#localVideo")[0];

        vid.srcObject = stream;

        localStream = stream;

    }



    function onAddStream(evt) {

        var pc = evt.target;

        var stream = evt.stream;

        var peer = getUsernameByRemoteDescription(pc.remoteDescription.sdp);

        pcs[peer].s = stream;

        var v = addNewVideo(stream);

        pcs[peer].v = v;

    }



    function addNewVideo(stream) {

        var vid = document.createElement("video");

        $("#videos")[0].appendChild(vid);

        vid.srcObject = stream;

        return vid;

    }

</script>

</div>

</body>

</html>


getice.php



<?php

$curl = curl_init();

curl_setopt_array( $curl, array (

 CURLOPT_URL =>

"https://global.xirsys.net/_turn/appchannel/",

 CURLOPT_USERPWD => "account:key",

 CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

 CURLOPT_CUSTOMREQUEST => "PUT",

 CURLOPT_RETURNTRANSFER => 1

));

$resp = curl_exec($curl);

print $resp;

curl_close($curl);

?>


gettoken.php



$data = array( 'k' => $_POST["username"], 'expire' => 45, 'depth' => 10 );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_token/appchannel?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'PUT'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


gethost.php



$data = array( 'k' => $_POST["username"], 'type' => 'signal' );

$qs = http_build_query($data);



$curl = curl_init();

curl_setopt_array($curl, array(

     CURLOPT_RETURNTRANSFER => 1,

     CURLOPT_URL => 'https://global.xirsys.net/_host?'.$qs,

     CURLOPT_USERPWD => "account:key",

     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,

     CURLOPT_CUSTOMREQUEST => 'GET'

));

$resp = curl_exec($curl);

curl_close($curl);

echo($resp);


Edit: errors -> on Chrome / Firefox
on Chromeon Firefox






javascript php webrtc xirsys




javascript php webrtc xirsys






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 22 at 2:28

























asked Nov 22 at 1:54









Igor O

232415




232415












  • You're going to have to try to narrow this down a bit... we don't have any way of reproducing this issue.
    – Brad
    Nov 22 at 2:32










  • You are right @Brad, actually, I'm a bit lost, I'm not sure how to summarize this... With an account and keys, you will be able to run the code on your side. Is that helps?
    – Igor O
    Nov 22 at 3:02






  • 1




    No, that doesn't help. Figure out what evt.target is, ensure it's what you expect, figure out why remoteDescription is null, narrow this problem down.
    – Brad
    Nov 22 at 3:04


















  • You're going to have to try to narrow this down a bit... we don't have any way of reproducing this issue.
    – Brad
    Nov 22 at 2:32










  • You are right @Brad, actually, I'm a bit lost, I'm not sure how to summarize this... With an account and keys, you will be able to run the code on your side. Is that helps?
    – Igor O
    Nov 22 at 3:02






  • 1




    No, that doesn't help. Figure out what evt.target is, ensure it's what you expect, figure out why remoteDescription is null, narrow this problem down.
    – Brad
    Nov 22 at 3:04
















You're going to have to try to narrow this down a bit... we don't have any way of reproducing this issue.
– Brad
Nov 22 at 2:32




You're going to have to try to narrow this down a bit... we don't have any way of reproducing this issue.
– Brad
Nov 22 at 2:32












You are right @Brad, actually, I'm a bit lost, I'm not sure how to summarize this... With an account and keys, you will be able to run the code on your side. Is that helps?
– Igor O
Nov 22 at 3:02




You are right @Brad, actually, I'm a bit lost, I'm not sure how to summarize this... With an account and keys, you will be able to run the code on your side. Is that helps?
– Igor O
Nov 22 at 3:02




1




1




No, that doesn't help. Figure out what evt.target is, ensure it's what you expect, figure out why remoteDescription is null, narrow this problem down.
– Brad
Nov 22 at 3:04




No, that doesn't help. Figure out what evt.target is, ensure it's what you expect, figure out why remoteDescription is null, narrow this problem down.
– Brad
Nov 22 at 3:04

















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