yaswvc/public/main.js

// client-side js, loaded by index.html
// run by the browser each time the page is loaded

let Peer = window.Peer;

let messagesEl = document.querySelector('.messages');
let peerIdEl = document.querySelector('#connect-to-peer');
let videoEl = document.querySelector('#remoteVideo');

let logMessage = (message) => {
  let newMessage = document.createElement('div');
  newMessage.innerText = message;
  messagesEl.appendChild(newMessage);
};

let renderVideo = (stream, selector = '#remoteVideo') => {
  document.querySelector(selector).srcObject = stream;
};

// Register with the peer server
let peer = new Peer({
  host: '/',
  path: '/peerjs/myapp'
});
peer.on('open', (id) => {
  logMessage('My peer ID is: ' + id);
});
peer.on('error', (error) => {
  console.error(error);
});

// Handle incoming data connection
peer.on('connection', (conn) => {
  logMessage('incoming peer connection!');
  console.log('incoming peer connection!', conn);
  conn.on('data', (data) => {
    logMessage(`received: ${data}`);
  });
  conn.on('open', () => {
    conn.send('hello!');
  });
  conn.on('close', () => {
    logMessage('Connection closed.');
  });
  conn.on('error', (error) => {
    console.error('Error:', error);
    logMessage('Error'+error);
  })
});

// Handle incoming voice/video connection
peer.on('call', (call) => {
  console.log('INCOMING CALL', call);
  call.answer(window.stream); // Answer the call with an A/V stream.
  renderVideo(window.stream, '#localVideo');
  call.on('stream', renderVideo);
  // navigator.mediaDevices.getUserMedia({video: true, audio: true})
  //   .then((stream) => {
  //     call.answer(stream); // Answer the call with an A/V stream.
  //     renderVideo(stream, '#localVideo');
  //     call.on('stream', renderVideo);
  //   })
  //   .catch((err) => {
  //     console.error('Failed to get local stream', err);
  //   });
});

// Initiate outgoing connection
let connectToPeer = () => {
  let peerId = peerIdEl.value;
  logMessage(`Connecting to ${peerId}...`);
  
  let conn = peer.connect(peerId);
  conn.on('data', (data) => {
    logMessage(`received: ${data}`);
  });
  conn.on('open', () => {
    conn.send('hi!');
  });
  
  let call = peer.call(peerId, window.stream);
  call.on('stream', renderVideo);
  // navigator.mediaDevices.getUserMedia({video: true, audio: true})
  //   .then((stream) => {
  //     let call = peer.call(peerId, stream);
  //     call.on('stream', renderVideo);
  //   })
  //   .catch((err) => {
  //     logMessage('Failed to get local stream', err);
  //   });
};

let startLocalStream = () => {
  navigator.mediaDevices.getUserMedia({video: true, audio: true})
    .then((localStream) => {
      console.log('LOCAL STREAM', localStream);
      renderVideo(localStream, '#localVideo');
      window.stream = localStream;
    })
    .catch((err) => {
      console.log('Failed to get local stream', err);
      logMessage('Failed to get local stream', err);
    });
}
// startLocalStream();

let disconnectFromPeer = () => {
  
}

window.disconnectFromPeer = disconnectFromPeer;
window.connectToPeer = connectToPeer;


  
/*
*  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
*  Use of this source code is governed by a BSD-style license
*  that can be found in the LICENSE file in the root of the source
*  tree.
*/

// 'use strict';

const videoElement = document.querySelector('#localVideo');
const audioInputSelect = document.querySelector('select#audioSource');
const audioOutputSelect = document.querySelector('select#audioOutput');
const videoSelect = document.querySelector('select#videoSource');
const selectors = [audioInputSelect, audioOutputSelect, videoSelect];

audioOutputSelect.disabled = !('sinkId' in HTMLMediaElement.prototype);

function gotDevices(deviceInfos) {
  // Handles being called several times to update labels. Preserve values.
  const values = selectors.map(select => select.value);
  selectors.forEach(select => {
    while (select.firstChild) {
      select.removeChild(select.firstChild);
    }
  });
  for (let i = 0; i !== deviceInfos.length; ++i) {
    const deviceInfo = deviceInfos[i];
    const option = document.createElement('option');
    option.value = deviceInfo.deviceId;
    if (deviceInfo.kind === 'audioinput') {
      option.text = deviceInfo.label || `microphone ${audioInputSelect.length + 1}`;
      audioInputSelect.appendChild(option);
    } else if (deviceInfo.kind === 'audiooutput') {
      option.text = deviceInfo.label || `speaker ${audioOutputSelect.length + 1}`;
      audioOutputSelect.appendChild(option);
    } else if (deviceInfo.kind === 'videoinput') {
      option.text = deviceInfo.label || `camera ${videoSelect.length + 1}`;
      videoSelect.appendChild(option);
    } else {
      console.log('Some other kind of source/device: ', deviceInfo);
    }
  }
  selectors.forEach((select, selectorIndex) => {
    if (Array.prototype.slice.call(select.childNodes).some(n => n.value === values[selectorIndex])) {
      select.value = values[selectorIndex];
    }
  });
}

navigator.mediaDevices.enumerateDevices().then(gotDevices).catch(handleError);

// Attach audio output device to video element using device/sink ID.
function attachSinkId(element, sinkId) {
  if (typeof element.sinkId !== 'undefined') {
    element.setSinkId(sinkId)
        .then(() => {
          console.log(`Success, audio output device attached: ${sinkId}`);
        })
        .catch(error => {
          let errorMessage = error;
          if (error.name === 'SecurityError') {
            errorMessage = `You need to use HTTPS for selecting audio output device: ${error}`;
          }
          console.error(errorMessage);
          // Jump back to first output device in the list as it's the default.
          audioOutputSelect.selectedIndex = 0;
        });
  } else {
    console.warn('Browser does not support output device selection.');
  }
}

function changeAudioDestination() {
  const audioDestination = audioOutputSelect.value;
  attachSinkId(videoElement, audioDestination);
}

function gotStream(stream) {
  window.stream = stream; // make stream available to console
  videoElement.srcObject = stream;
  // Refresh button list in case labels have become available
  return navigator.mediaDevices.enumerateDevices();
}

function handleError(error) {
  console.log('navigator.MediaDevices.getUserMedia error: ', error.message, error.name);
}

function start() {
  if (window.stream) {
    window.stream.getTracks().forEach(track => {
      track.stop();
    });
  }
  const audioSource = audioInputSelect.value;
  const videoSource = videoSelect.value;
  const constraints = {
    audio: {deviceId: audioSource ? {exact: audioSource} : undefined},
    video: {deviceId: videoSource ? {exact: videoSource} : undefined}
  };
  navigator.mediaDevices.getUserMedia(constraints).then(gotStream).then(gotDevices).catch(handleError);
}

audioInputSelect.onchange = start;
audioOutputSelect.onchange = changeAudioDestination;

videoSelect.onchange = start;

start();