How to get real time audio streams of both Calling party and called party independently

Asterisk Asterisk APIs
5

Hi,
Trying with the mentioned approach. But not getting the audio streams. So could you please help, if we missed/incorrectly used anything here. Thanks.

Running this script in the same server which we used for running the asterisk.

AudioCapture.js

const client = require('ari-client');
const util = require('util');
const rtp = require('./rtp-udp-server');

async function connect() {
  try {
   let swap16 = false;
   let audioOutput = "test.raw";
   let audioServer = new rtp.RtpUdpServerSocket("localhost:9999", swap16, audioOutput);
   const ariClient = await client.connect("http://127.0.0.1:8088", "asterisk", "asterisk");
   await ariClient.start("externalMedia");
   console.log("Connected to Asterisk ARI");
 
   const bridges = await ariClient.bridges.list();
   console.log("number of bridges :", bridges.length);

   let bridgeId = "bridgeId"   //will update the bridge id of the current call, each time for the timebeing.
   if(bridgeId){
      const bridge = await ariClient.bridges.get({ bridgeId });
      const channelsInBridge = bridge.channels;
      const snoopBridge = await ariClient.bridges.create({
             type: 'mixing'
        });

      // Snoop on each channel
      for (const channel of channelsInBridge) {
        const snoopChannel = await ariClient.channels.snoopChannel({
            channelId: channel,
            app: 'externalMedia',
            spy: 'both',
            snoopId: 'snoop-' + channel,
            });

      console.log(`Snooping on channel id`, snoopChannel.id);


       let externalChannel = await snoopChannel.externalMedia({
                                app: "externalMedia",
                                external_host: "localhost:9999",
                                format: "ulaw"
                        });


       await ariClient.bridges.addChannel({ bridgeId: snoopBridge.id, channel: externalChannel.id });

      }
    }
   console.log('Waiting for audio streams ..... ');

  } catch (error) {
    console.error("Error connecting to Asterisk ARI:", error.message);
  }
}

// Call the connect function
connect();

rtp-udp-server.js.js → we are referring from :- https://github.com/asterisk/asterisk-external-media/blob/master/lib/rtp-udp-server.js )