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Я создал предложение со стороны peer_a, а также ответ со стороны peer_b.В этой части кода все в порядке, но канал не открывается, я не знаю, в чем проблема, пожалуйста, помогите мне, я новичок в этом протоколе.

Peer_a()

 function Peer_a(){

    const iceConfiguration = { }
    iceConfiguration.iceServers = [];

    

    iceConfiguration.iceServers.push(
        
        {url:'stun:stun01.sipphone.com'},
        {url:'stun:stun.ekiga.net'},
        {url:'stun:stun.fwdnet.net'},
        {url:'stun:stun.ideasip.com'},
        {url:'stun:stun.iptel.org'},
        {url:'stun:stun.rixtelecom.se'},
        {url:'stun:stun.schlund.de'},
        {url:'stun:stun.l.google.com:19302'},
        {url:'stun:stun1.l.google.com:19302'},
        {url:'stun:stun2.l.google.com:19302'},
        {url:'stun:stun3.l.google.com:19302'},
        {url:'stun:stun4.l.google.com:19302'},
        {url:'stun:stunserver.org'},
        {url:'stun:stun.softjoys.com'},
        {url:'stun:stun.voiparound.com'},
        {url:'stun:stun.voipbuster.com'},
        {url:'stun:stun.voipstunt.com'},
        {url:'stun:stun.voxgratia.org'},
        {url:'stun:stun.xten.com'},
       
      
    )    
    const localConnection = new RTCPeerConnection(iceConfiguration)

    lc = localConnection
    
    lc.onicecandidate = e =>  {
        obj = e;
        console.log(" NEW ice candidnat!! on localconnection reprinting SDP " )
        offer = JSON.stringify(lc.localDescription)
    }

    sendChannel = lc.createDataChannel("sendChannel");
    sendChannel.onmessage =e =>  console.log("messsage received!!!"    e.data )
    sendChannel.onopen = e => console.log("open!!!!");
    sendChannel.onclose =e => console.log("closed!!!!!!");


    lc.createOffer().then(o => lc.setLocalDescription(o))

}
 

Peer_b()

 async function peer_b(){

    const offer = JSON.parse(document.querySelector('#frndid2').value)
    const remoteConnection = new RTCPeerConnection()
    rc = remoteConnection

    rc.onicecandidate = e =>  {
        console.log(" NEW ice candidnat!! on localconnection reprinting SDP " )
        answer = JSON.stringify(rc.localDescription)
    }

    rc.ondatachannel= e => {

        receiveChannel = e.channel;
        receiveChannel.onmessage =e =>  console.log("messsage received!!!"    e.data )
        receiveChannel.onopen = e => console.log("open!!!!");
        receiveChannel.onclose =e => console.log("closed!!!!!!");
        rc.channel = receiveChannel;
    }

    rc.setRemoteDescription(offer).then(a=>console.log("done"))

    //create answer
    await rc.createAnswer().then(a => rc.setLocalDescription(a)).then(a=>
    console.log(JSON.stringify(rc.localDescription)))
}

 

Когда peer_a нажимает кнопку далее

 function next_page(){
    const answer = JSON.parse(document.querySelector('#frndid').value)
    console.log(answer);
    lc.setRemoteDescription (answer).then(a=>console.log("done"))

   
    sendChannel.onmessage =e =>  console.log("messsage received!!!"    e.data )
    sendChannel.onopen = e => console.log("open!!!!");
    sendChannel.onclose =e => console.log("closed!!!!!!");

}
 

When peer_b clicks next button

 function next_page_2(){
    rc.ondatachannel= e => {

        receiveChannel = e.channel;
        receiveChannel.onmessage =e =>  console.log("messsage received!!!"    e.data )
        receiveChannel.onopen = e => console.log("open!!!!");
        receiveChannel.onclose =e => console.log("closed!!!!!!");
        rc.channel = receiveChannel;
    }
}
 

when peer_a clicks the next button «done» was displayed on the console but «open!!!!» is not printing anywhere.