# Cannot destructure property 'id' of '(intermediate value)' as it is undefined. **URL:** \ **Category:** mediasoup libraries\ **Created:** [September 30, 2020, 7:58pm UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819 "2020-09-30T19:58:51Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Sonny93](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/sonny93/32/1620_2.png) [@Sonny93](https://mediasoup.discourse.group/u/Sonny93)\ **Post date:** [September 30, 2020, 7:58pm UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/1 "2020-09-30T19:58:51Z")
Hello I’m trying to create a video conferencing application based on Mediasoup but I get this error when I do a “transport.produce()” client-side. ```auto Cannot destructure property 'id' of '(intermediate value)' as it is undefined. ``` I have no idea what it is due to, even after doing a lot of research, so I would like to know if you have a solution. client-side ```auto socket.once('transport.config', (data) => { if (!device) return; device.load({ routerRtpCapabilities: { codecs: rtp.mediaCodecs, headerExtensions: rtp.headerExtensions } }).then(async () => { if (device.canProduce('video')) { const videoStream = await navigator.mediaDevices.getUserMedia({ video: true }).catch(console.error), videoTrack = videoStream.getVideoTracks()[0]; const { sendTransport, rcvTransport } = data; console.log(rcvTransport); const transportSend = device.createSendTransport({ ...rcvTransport }); transportSend.on('connect', async ({ dtlsParameters }, callback, errback) => { socket.emit('transport-connect', { dtlsParameters, transportId: rcvTransport.id }); socket.once('transport-connect-response', callback); }); transportSend.on('produce', async ({ kind, rtpParameters, appData }, callback, errback) => { socket.emit('transport-produce', { transportId: rcvTransport.id, kind, rtpParameters, appData }); socket.once('transport-produce-response', callback); }); transportSend.on('connectionstatechange', (connectionState) => console.log('TransportSend ConnectionState:', connectionState)); transportSend.produce({ track: videoTrack }).then((producer) => { console.log('produced', producer); }).catch(console.error); } else { console.log('cant do video'); } }).catch(console.error); }); ``` server-side ```auto const sendTransport = await router.createWebRtcTransport({ listenIps: [ { ip: '127.0.0.1', announcedIp: null }, { ip: '172.17.0.1', announcedIp: null }, ], enableUdp: true, enableTcp: true, preferUdp: true }); sendTransport.on('icestatechange', (icestate) => console.log('IceState =>', icestate)); socket.once('transport-connect', ({ transportId, dtlsParameters }) => { sendTransport.connect({ dtlsParameters }); console.log('connecting'); socket.emit('transport-connect-response'); }); socket.once('transport-produce', ({ transportId, kind, rtpParameters, appData }) => { console.log('producing', kind, rtpParameters); const produced = sendTransport.produce({ kind, rtpParameters, appData }); socket.emit('transport-produce-response'); }); socket.emit('transport.config', { rcvTransport: { id: sendTransport.id, iceParameters: sendTransport.iceParameters, iceCandidates: sendTransport.iceCandidates, dtlsParameters: sendTransport.dtlsParameters, sctpParameters: sendTransport.sctpParameters } }); ``` Thank you in advance for your help. ---
**Author:** ![ibc](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/ibc/32/1540_2.png) [@ibc](https://mediasoup.discourse.group/u/ibc)\ **Post date:** [October 1, 2020, 7:37am UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/2 "2020-10-01T07:37:05Z")
First you cannot use [socket.io](http://socket.io) for request/response by using just [socket.io](http://socket.io) events. Learn about using request/response in [socket.io](http://socket.io) first (topic not covered by this forum). Second, check again the transport “produce” event documentation. You must invoke the given “callback” with an Object with the “id” of the server-side created Producer as argument. ---
**Author:** ![Sonny93](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/sonny93/32/1620_2.png) [@Sonny93](https://mediasoup.discourse.group/u/Sonny93)\ **Post date:** [October 1, 2020, 12:56pm UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/3 "2020-10-01T12:56:56Z")
Hello, thanks you for helping me. I have no problem with [socket.io](http://socket.io), but i solved my problem by passing to the producer client-side callback, the producer id created server-side. Thanks again 😉 ---
**Author:** ![ibc](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/ibc/32/1540_2.png) [@ibc](https://mediasoup.discourse.group/u/ibc)\ **Post date:** [October 1, 2020, 1:37pm UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/4 "2020-10-01T13:37:31Z")
> [@Sonny93](#): > > I have no problem with [socket.io](http://socket.io) No, but you will have as far as you try to create two producers at the same time. ---
**Author:** ![nadirabbas](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/nadirabbas/32/918_2.png) [@nadirabbas](https://mediasoup.discourse.group/u/nadirabbas)\ **Post date:** [April 6, 2021, 11:01am UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/5 "2021-04-06T11:01:19Z")
your work is as good as you are a toxic person. ---
**Author:** ![Sonny93](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/sonny93/32/1620_2.png) [@Sonny93](https://mediasoup.discourse.group/u/Sonny93)\ **Post date:** [April 6, 2021, 11:16am UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/6 "2021-04-06T11:16:26Z")
Euh wtf ? ---
**Author:** ![nadirabbas](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/nadirabbas/32/918_2.png) [@nadirabbas](https://mediasoup.discourse.group/u/nadirabbas)\ **Post date:** [April 6, 2021, 11:55am UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/7 "2021-04-06T11:55:36Z")
his tone is very condescending in most of the posts. ---
**Author:** ![ibc](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/ibc/32/1540_2.png) [@ibc](https://mediasoup.discourse.group/u/ibc)\ **Post date:** [April 6, 2021, 11:58am UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/8 "2021-04-06T11:58:50Z")
Hi, @nadirabbas. You are banned from this forum and our GitHub repositories. Fuck you. ---
**Author:** ![nadirabbas1](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/nadirabbas1/32/919_2.png) [@nadirabbas1](https://mediasoup.discourse.group/u/nadirabbas1)\ **Post date:** [April 6, 2021, 12:09pm UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/9 "2021-04-06T12:09:37Z")
yes, ban the person who tells you your reality, you moron. ---
**Author:** ![ibc](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/ibc/32/1540_2.png) [@ibc](https://mediasoup.discourse.group/u/ibc)\ **Post date:** [April 6, 2021, 12:40pm UTC](https://mediasoup.discourse.group/t/cannot-destructure-property-id-of-intermediate-value-as-it-is-undefined/1819/10 "2021-04-06T12:40:34Z")
Don’t worry, bunch of crap. Banned again.