React Native + WebRTC TypeError: Undefined is not and Object(Evaluating: 'data.type')
I've been trying to learn WebRTC with React Native, so I've been working on this video call project. I thought I had it all figured out until this came up.
First of all, this is my React Native Code
import React, {useEffect, useState, useCallback} from 'react';
import {View, StyleSheet, Alert} from 'react-native';
import {Text} from 'react-native-paper';
import {Button} from 'react-native-paper';
import AsyncStorage from '@react-native-community/async-storage';
import {TextInput} from 'react-native-paper';
import {useFocusEffect} from '@react-navigation/native';
import InCallManager from 'react-native-incall-manager';
import {
RTCPeerConnection,
RTCIceCandidate,
RTCSessionDescription,
RTCView,
MediaStream,
MediaStreamTrack,
mediaDevices,
registerGlobals,
} from 'react-native-webrtc';
export default function CallScreen({navigation, ...props}) {
let name;
let connectedUser;
const [userId, setUserId] = useState('');
const [socketActive, setSocketActive] = useState(false);
const [calling, setCalling] = useState(false);
// Video Scrs
const [localStream, setLocalStream] = useState({toURL: () => null});
const [remoteStream, setRemoteStream] = useState({toURL: () => null});
const [conn, setConn] = useState(new WebSocket('ws://:4443/'));
const [yourConn, setYourConn] = useState(
new RTCPeerConnection({
iceServers: [
{
urls: 'stun:stun.l.google.com:19302',
}, {
urls: 'stun:stun1.l.google.com:19302',
}, {
urls: 'stun:stun2.l.google.com:19302',
}, {
username: "",
credential: "",
urls: 'turn::3478',
}, {
username: "",
credential: "",
urls: 'stun::3478',
}
],
}),
);
const [offer, setOffer] = useState(null);
const [callToUsername, setCallToUsername] = useState(null);
useFocusEffect(
useCallback(() => {
AsyncStorage.getItem('userId').then(id => {
console.log(id);
if (id) {
setUserId(id);
} else {
setUserId('');
navigation.push('Login');
}
});
}, [userId]),
);
useEffect(() => {
navigation.setOptions({
title: 'Hola' + userId,
headerRight: () => (
<Button mode="text" onPress={onLogout} style={{paddingRight: 10}}>
Salir
</Button>
),
});
}, [userId]);
useEffect(() => {
if (socketActive && userId.length > 0) {
try {
InCallManager.start({media: 'audio'});
InCallManager.setForceSpeakerphoneOn(true);
InCallManager.setSpeakerphoneOn(true);
} catch (err) {
console.log('InApp Caller ---------------------->', err);
}
console.log(InCallManager);
send({
type: 'login',
name: userId,
});
}
}, [socketActive, userId]);
const onLogin = () => {};
useEffect(() => {
conn.onopen = () => {
console.log('Connected to the signaling server');
setSocketActive(true);
};
conn.onmessage = msg => {
let data;
if (msg.data === 'Hello world') {
data = {};
} else {
dcata = JSON.parse(msg.data);
console.log('Data --------------------->', data);
switch (data.type) {
case 'login':
console.log('Login');
break;
case 'offer':
handleOffer(data.offer, data.name);
console.log('Offer');
break;
case 'answer':
handleAnswer(data.answer);
console.log('Answer');
break;
case 'candidate':
handleCandidate(data.candidate);
console.log('Candidate');
break;
case 'leave':
handleLeave();
console.log('Leave');
break;
default:
break;
}
}
};
conn.onerror = function(err) {
console.log('Got error', err);
};
let isFront = false;
mediaDevices.enumerateDevices().then(sourceInfos => {
let videoSourceId;
for (let i = 0; i < sourceInfos.length; i++) {
const sourceInfo = sourceInfos[i];
if (
sourceInfo.kind == 'videoinput' &&
sourceInfo.facing == (isFront ? 'front' : 'environment')
) {
videoSourceId = sourceInfo.deviceId;
}
}
mediaDevices
.getUserMedia({
audio: true,
video: {
mandatory: {
minWidth: 500,
minHeight: 300,
minFrameRate: 30,
},
facingMode: isFront ? 'user' : 'environment',
optional: videoSourceId ? [{sourceId: videoSourceId}] : [],
},
})
.then(stream => {
setLocalStream(stream);
yourConn.addStream(stream);
})
.catch(error => {
});
});
yourConn.onaddstream = event => {
console.log('On Add Stream', event);
setRemoteStream(event.stream);
};
yourConn.onicecandidate = event => {
if (event.candidate) {
send({
type: 'candidate',
candidate: event.candidate,
});
}
};
}, []);
const send = message => {
if (connectedUser) {
message.name = connectedUser;
console.log('Connected iser in end----------', message);
}
conn.send(JSON.stringify(message));
};
const onCall = () => {
setCalling(true);
connectedUser = callToUsername;
console.log('Caling to', callToUsername);
yourConn.createOffer().then(offer => {
yourConn.setLocalDescription(offer).then(() => {
console.log('Sending Ofer');
console.log(offer);
send({
type: 'offer',
offer: offer,
});
});
});
};
const handleOffer = async (offer, name) => {
console.log(name + ' is calling you.');
console.log('Accepting Call===========>', offer);
connectedUser = name;
try {
await yourConn.setRemoteDescription(new RTCSessionDescription(offer));
const answer = await yourConn.createAnswer();
await yourConn.setLocalDescription(answer);
send({
type: 'answer',
answer: answer,
});
} catch (err) {
console.log('Offerr Error', err);
}
};
const handleAnswer = answer => {
yourConn.setRemoteDescription(new RTCSessionDescription(answer));
};
const handleCandidate = candidate => {
setCalling(false);
console.log('Candidate ----------------->', candidate);
yourConn.addIceCandidate(new RTCIceCandidate(candidate));
};
const hangUp = () => {
send({
type: 'leave',
});
handleLeave();
};
const handleLeave = () => {
connectedUser = null;
setRemoteStream({toURL: () => null});
yourConn.close();
};
const onLogout = () => {
AsyncStorage.removeItem('userId').then(res => {
navigation.push('Login');
});
};
const acceptCall = async () => {
console.log('Accepting Call===========>', offer);
connectedUser = offer.name;
try {
await yourConn.setRemoteDescription(new RTCSessionDescription(offer));
const answer = await yourConn.createAnswer();
await yourConn.setLocalDescription(answer);
send({
type: 'answer',
answer: answer,
});
} catch (err) {
console.log('Offerr Error', err);
}
};
const rejectCall = async () => {
send({
type: 'leave',
});
``;
setOffer(null);
handleLeave();
};
return (
<View style={styles.root}>
<View style={styles.inputField}>
<TextInput
label="Ingresa el ID del familiar"
mode="outlined"
style={{marginBottom: 7}}
onChangeText={text => setCallToUsername(text)}
/>
<Button
mode="contained"
onPress={onCall}
loading={calling}
// style={styles.btn}
contentStyle={styles.btnContent}
disabled={!(socketActive && userId.length > 0)}>
Llamar
</Button>
</View>
<View style={styles.videoContainer}>
<View style={[styles.videos, styles.localVideos]}>
<Text>Tu video</Text>
<RTCView streamURL={localStream.toURL()} style={styles.localVideo} />
</View>
<View style={[styles.videos, styles.remoteVideos]}>
<Text>Video del familiar</Text>
<RTCView
streamURL={remoteStream.toURL()}
style={styles.remoteVideo}
/>
</View>
</View>
</View>
);
}
const styles = StyleSheet.create({
root: {
backgroundColor: '#fff',
flex: 1,
padding: 20,
},
inputField: {
marginBottom: 10,
flexDirection: 'column',
},
videoContainer: {
flex: 1,
minHeight: 450,
},
videos: {
width: '100%',
flex: 1,
position: 'relative',
overflow: 'hidden',
borderRadius: 6,
},
localVideos: {
height: 100,
marginBottom: 10,
},
remoteVideos: {
height: 400,
},
localVideo: {
backgroundColor: '#f2f2f2',
height: '100%',
width: '100%',
},
remoteVideo: {
backgroundColor: '#f2f2f2',
height: '100%',
width: '100%',
},
});
At this point is worth to mention that my STUN/TURN server works perfectly, and this is my signaling socket
var WebSocketServer = require('ws').Server;
var wss = new WebSocketServer({port: 4443});
var users = {};
wss.on('connection', function(connection) {
console.log('User connected');
//when server gets a message from a connected user
connection.on('message', function(message) {
var data;
//accepting only JSON messages
try {
data = JSON.parse(message);
} catch (e) {
console.log('Invalid JSON');
data = {};
}
//switching type of the user message
switch (data.type) {
//when a user tries to login
case 'login':
console.log('User logged', data.name);
//if anyone is logged in with this username then refuse
if(users[data.name]) {
sendTo(connection, {
type: 'login',
success: false
});
} else {
//save user connection on the server
users[data.name] = connection;
connection.name = data.name;
sendTo(connection, {
type: 'login',
success: true
});
}
break;
case 'offer':
//for ex. UserA wants to call UserB
console.log('Sending offer to: ', data.offer, data.name);
//if UserB exists then send him offer details
var conn = users[data.name];
if(conn != null) {
//setting that UserA connected with UserB
connection.otherName = data.name;
sendTo(conn, {
type: 'offer',
offer: data.offer,
name: connection.name
});
}
break;
case 'answer':
console.log('Sending answer to: ', data.answer);
//for ex. UserB answers UserA
var conn = users[data.answer];
if(conn != null) {
connection.otherName = data.name;
sendTo(conn, {
type: 'answer',
answer: data.answer
});
}
break;
case 'candidate':
console.log("Sending candidate to:",data.name);
var conn = users[data.name];
if(conn != null) {
sendTo(conn, {
type: 'candidate',
candidate: data.candidate
});
}
break;
case 'leave':
console.log('Disconnecting from', data.name);
var conn = users[data.name];
conn.otherName = null;
//notify the other user so he can disconnect his peer connection
if(conn != null) {
sendTo(conn, {
type: 'leave'
});
}
break;
default:
sendTo(connection, {
type: 'error',
message: 'Command not found: ' + data.type
});
break;
}
});
//when user exits, for example closes a browser window
//this may help if we are still in "offer","answer" or "candidate" state
connection.on('close', function() {
if(connection.name) {
delete users[connection.name];
if(connection.otherName) {
console.log('Disconnecting from ', connection.otherName);
var conn = users[connection.otherName];
conn.otherName = null;
if(conn != null) {
sendTo(conn, {
type: 'leave'
});
}
}
}
});
connection.send('Hello world');
});
function sendTo(connection, message) {
connection.send(JSON.stringify(message));
}
But here si where the problems begin.
When I use the App to login this is what the Socket shows.
User connected
User connected
User connected
User logged 1
User connected
User connected
User connected
User connected
User connected
But immediately, the app shows this.
And if I dismiss the error and try to Call another peer that is already conected, the error shows on the device I try to Call.
The React Native cli, tells me the same as the error
Require cycles are allowed, but can result in uninitialized values. Consider refactoring to remove the need for a cycle.
[Tue Jun 02 2020 10:34:26.400] LOG Running "webrtcApp" with {"rootTag":1}
[Tue Jun 02 2020 10:37:20.365] LOG Connected to the signaling server
[Tue Jun 02 2020 10:37:20.487] LOG 1
[Tue Jun 02 2020 10:37:20.747] LOG {"audioUriMap": {"busytone": {"_BUNDLE_": null, "_DEFAULT_": null}, "ringback": {"_BUNDLE_": null, "_DEFAULT_": null}, "ringtone": {"_BUNDLE_": null, "_DEFAULT_": null}}, "cameraPermission": "granted", "checkCameraPermission": [Function bound checkCameraPermission], "checkRecordPermission": [Function bound checkRecordPermission], "recordPermission": "granted", "requestCameraPermission": [Function bound requestCameraPermission], "requestRecordPermission": [Function bound requestRecordPermission], "vibrate": false}
[Tue Jun 02 2020 10:37:20.914] LOG 1
[Tue Jun 02 2020 10:37:20.933] LOG Data ---------------------> undefined
[Tue Jun 02 2020 10:37:52.746] LOG Data ---------------------> undefined
And here it is what the socket shows when I try to call another peer that is Connected.
Sending offer to: {
sdp: 'v=0\r\n' +
'o=- 3903065942025360998 2 IN IP4 127.0.0.1\r\n' +
's=-\r\n' +
't=0 0\r\n' +
'a=group:BUNDLE audio video\r\n' +
'a=msid-semantic: WMS 4169861f-fa77-4c52-b0a7-da4673eb4512\r\n' +
'm=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 102 0 8 106 105 13 110 112 113 126\r\n' +
'c=IN IP4 0.0.0.0\r\n' +
'a=rtcp:9 IN IP4 0.0.0.0\r\n' +
'a=ice-ufrag:+CFh\r\n' +
'a=ice-pwd:ccPSGw5U3fnoHysgp1bquCYJ\r\n' +
'a=ice-options:trickle renomination\r\n' +
'a=fingerprint:sha-256 2A:2B:C1:A4:1D:8C:B3:C3:B8:AA:6D:C2:36:71:F7:95:61:CC:54:E6:2D:79:C0:4D:A5:D4:E1:45:3D:00:BF:F4\r\n' +
'a=setup:actpass\r\n' +
'a=mid:audio\r\n' +
'a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\n' +
'a=extmap:2 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\n' +
'a=sendrecv\r\n' +
'a=rtcp-mux\r\n' +
'a=rtpmap:111 opus/48000/2\r\n' +
'a=rtcp-fb:111 transport-cc\r\n' +
'a=fmtp:111 minptime=10;useinbandfec=1\r\n' +
'a=rtpmap:103 ISAC/16000\r\n' +
'a=rtpmap:104 ISAC/32000\r\n' +
'a=rtpmap:9 G722/8000\r\n' +
'a=rtpmap:102 ILBC/8000\r\n' +
'a=rtpmap:0 PCMU/8000\r\n' +
'a=rtpmap:8 PCMA/8000\r\n' +
'a=rtpmap:106 CN/32000\r\n' +
'a=rtpmap:105 CN/16000\r\n' +
'a=rtpmap:13 CN/8000\r\n' +
'a=rtpmap:110 telephone-event/48000\r\n' +
'a=rtpmap:112 telephone-event/32000\r\n' +
'a=rtpmap:113 telephone-event/16000\r\n' +
'a=rtpmap:126 telephone-event/8000\r\n' +
'a=ssrc:3496221613 cname:7efsTJMX4YNf740V\r\n' +
'a=ssrc:3496221613 msid:4169861f-fa77-4c52-b0a7-da4673eb4512 8c0eb0bb-a1ab-422a-a527-5d5bc73635b7\r\n' +
'a=ssrc:3496221613 mslabel:4169861f-fa77-4c52-b0a7-da4673eb4512\r\n' +
'a=ssrc:3496221613 label:8c0eb0bb-a1ab-422a-a527-5d5bc73635b7\r\n' +
'm=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 127\r\n' +
'c=IN IP4 0.0.0.0\r\n' +
'a=rtcp:9 IN IP4 0.0.0.0\r\n' +
'a=ice-ufrag:+CFh\r\n' +
'a=ice-pwd:ccPSGw5U3fnoHysgp1bquCYJ\r\n' +
'a=ice-options:trickle renomination\r\n' +
'a=fingerprint:sha-256 2A:2B:C1:A4:1D:8C:B3:C3:B8:AA:6D:C2:36:71:F7:95:61:CC:54:E6:2D:79:C0:4D:A5:D4:E1:45:3D:00:BF:F4\r\n' +
'a=setup:actpass\r\n' +
'a=mid:video\r\n' +
'a=extmap:14 urn:ietf:params:rtp-hdrext:toffset\r\n' +
'a=extmap:13 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\n' +
'a=extmap:3 urn:3gpp:video-orientation\r\n' +
'a=extmap:2 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\n' +
'a=extmap:5 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\r\n' +
'a=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type\r\n' +
'a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing\r\n' +
'a=extmap:8 http://tools.ietf.org/html/draft-ietf-avtext-framemarking-07\r\n' +
'a=extmap:9 http://www.webrtc.org/experiments/rtp-hdrext/color-space\r\n' +
'a=sendrecv\r\n' +
'a=rtcp-mux\r\n' +
'a=rtcp-rsize\r\n' +
'a=rtpmap:96 VP8/90000\r\n' +
'a=rtcp-fb:96 goog-remb\r\n' +
'a=rtcp-fb:96 transport-cc\r\n' +
'a=rtcp-fb:96 ccm fir\r\n' +
'a=rtcp-fb:96 nack\r\n' +
'a=rtcp-fb:96 nack pli\r\n' +
'a=rtpmap:97 rtx/90000\r\n' +
'a=fmtp:97 apt=96\r\n' +
'a=rtpmap:98 VP9/90000\r\n' +
'a=rtcp-fb:98 goog-remb\r\n' +
'a=rtcp-fb:98 transport-cc\r\n' +
'a=rtcp-fb:98 ccm fir\r\n' +
'a=rtcp-fb:98 nack\r\n' +
'a=rtcp-fb:98 nack pli\r\n' +
'a=rtpmap:99 rtx/90000\r\n' +
'a=fmtp:99 apt=98\r\n' +
'a=rtpmap:100 red/90000\r\n' +
'a=rtpmap:101 rtx/90000\r\n' +
'a=fmtp:101 apt=100\r\n' +
'a=rtpmap:127 ulpfec/90000\r\n' +
'a=ssrc-group:FID 1093641884 443757454\r\n' +
'a=ssrc:1093641884 cname:7efsTJMX4YNf740V\r\n' +
'a=ssrc:1093641884 msid:4169861f-fa77-4c52-b0a7-da4673eb4512 47eb8496-acdf-48ae-a7bb-bb44e758b23e\r\n' +
'a=ssrc:1093641884 mslabel:4169861f-fa77-4c52-b0a7-da4673eb4512\r\n' +
'a=ssrc:1093641884 label:47eb8496-acdf-48ae-a7bb-bb44e758b23e\r\n' +
'a=ssrc:443757454 cname:7efsTJMX4YNf740V\r\n' +
'a=ssrc:443757454 msid:4169861f-fa77-4c52-b0a7-da4673eb4512 47eb8496-acdf-48ae-a7bb-bb44e758b23e\r\n' +
'a=ssrc:443757454 mslabel:4169861f-fa77-4c52-b0a7-da4673eb4512\r\n' +
'a=ssrc:443757454 label:47eb8496-acdf-48ae-a7bb-bb44e758b23e\r\n',
type: 'offer'
} 2
Sending candidate to: {
candidate: 'candidate:3362660723 1 udp 2122260223 192.168.232.2 51977 typ host generation 0 ufrag +CFh network-id 3 network-cost 10',
sdpMLineIndex: 0,
sdpMid: 'audio'
}
Sending candidate to: {
candidate: 'candidate:1914131086 1 udp 2122187263 fec0::ff:fe44:5566 41727 typ host generation 0 ufrag +CFh network-id 4 network-cost 10',
sdpMLineIndex: 0,
sdpMid: 'audio'
}
Sending candidate to: {
candidate: 'candidate:3362660723 1 udp 2122260223 192.168.232.2 46626 typ host generation 0 ufrag +CFh network-id 3 network-cost 10',
sdpMLineIndex: 1,
sdpMid: 'video'
}
Sending candidate to: {
candidate: 'candidate:1914131086 1 udp 2122187263 fec0::ff:fe44:5566 39496 typ host generation 0 ufrag +CFh network-id 4 network-cost 10',
sdpMLineIndex: 1,
sdpMid: 'video'
}
Sending candidate to: {
candidate: 'candidate:842163049 1 udp 1686052607 189.133.49.117 60389 typ srflx raddr 192.168.232.2 rport 51977 generation 0 ufrag +CFh network-id 3 network-cost 10',
sdpMLineIndex: 0,
sdpMid: 'audio'
}
Sending candidate to: {
candidate: 'candidate:4231669940 1 udp 1685989631 2806:106e:a:f03d:7d79:9dd4:5653:7381 60393 typ srflx raddr fec0::ff:fe44:5566 rport 41727 generation 0 ufrag +CFh network-id 4 network-cost 10',
sdpMLineIndex: 0,
sdpMid: 'audio'
}
Sending candidate to: {
candidate: 'candidate:4231669940 1 udp 1685989631 2806:106e:a:f03d:7d79:9dd4:5653:7381 60394 typ srflx raddr fec0::ff:fe44:5566 rport 39496 generation 0 ufrag +CFh network-id 4 network-cost 10',
sdpMLineIndex: 1,
sdpMid: 'video'
}
Sending candidate to: {
candidate: 'candidate:842163049 1 udp 1686052607 189.133.49.117 60392 typ srflx raddr 192.168.232.2 rport 46626 generation 0 ufrag +CFh network-id 3 network-cost 10',
sdpMLineIndex: 1,
sdpMid: 'video'
}
Sending candidate to: {
candidate: 'candidate:2108125103 1 udp 41885439 172.31.19.115 64788 typ relay raddr 189.133.49.117 rport 60392 generation 0 ufrag +CFh network-id 3 network-cost 10',
sdpMLineIndex: 1,
sdpMid: 'video'
}
Sending candidate to: {
candidate: 'candidate:2108125103 1 udp 41885439 172.31.19.115 55279 typ relay raddr 189.133.49.117 rport 60389 generation 0 ufrag +CFh network-id 3 network-cost 10',
sdpMLineIndex: 0,
sdpMid: 'audio'
}
I don't know what am I doing wrong, but any help on what it is my problem would be appreciated.
Solution
There is a typo in onmessage on React Native. rename dcata to data. upvote if you find the answer useful.
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