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call_device_and_access_stream_1.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>DT XTech WebRTC Player</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css">
<style>
body {
background-color: #212529;
color: #dee2e6;
}
h1 {
margin-top: -40px;
/* You can adjust this value to move the heading upwards */
}
.container {
margin-top: 50px;
}
h1 {
color: #17a2b8;
}
.video-container {
border-top: 2px solid #17a2b8;
border-bottom: 2px solid #17a2b8;
border-radius: 10px;
overflow: hidden;
position: relative;
padding-top: 56.25%;
/* 16:9 Aspect Ratio (responsive video) */
}
.video-container video {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
.btn-container {
margin-top: 5px;
}
.btn-container .btn {
width: calc(50% - 10px);
/* Subtracting 10px for margin between buttons */
margin-right: 10px;
}
.btn-container .btn:last-child {
margin-right: 0;
}
.btn {
margin-top: 20px;
}
.connection-info {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 10px;
margin-bottom: 20px;
/* Added margin between the table and video */
}
.connection-info table {
width: 100%;
/* Match width to video container */
}
.table-offer {
width: 90%;
/* Adjust as needed */
max-width: 800px;
/* Maximum width for the table */
margin: 0 auto;
/* Center the table horizontally */
margin-top: 20px;
/* Adjust the value as needed */
border-collapse: collapse;
/* Remove border-collapse */
border: 1px solid #17a2b8;
/* Add border */
}
.table-offer th,
.table-offer td {
padding: 8px;
text-align: left;
color: #dee2e6;
border: none;
/* Remove border */
width: 100%;
}
.table-offer th {
background-color: #17a2b8;
font-weight: bold;
}
.container .table-offer,
.container table {
width: 100%;
/* Match width to container */
max-width: 800px;
/* Maximum width for the table */
margin: 0 auto;
/* Center the table horizontally */
}
th,
td {
padding: 8px;
text-align: left;
color: #dee2e6;
border: 1px solid #17a2b8;
width: 100%;
}
th {
background-color: #17a2b8;
font-weight: bold;
}
hr {
border-color: #17a2b8;
/* Match the color with the border */
margin: 20px 0;
/* Add margin for spacing */
}
input[type="text"] {
padding: 10px;
border: 1px solid #17a2b8;
/* Match the border color */
border-radius: 5px;
background-color: #333;
/* Dark background color */
color: #dee2e6;
/* Text color */
margin-right: 10px;
/* Add some space between input elements */
}
input[type="button"] {
padding: 10px 20px;
border: none;
border-radius: 5px;
background-color: #17a2b8;
/* Button color */
color: #fff;
/* Text color */
cursor: pointer;
}
input::placeholder {
color: #dee2e6 !important;
/* Your desired color */
}
input[type="button"]:hover {
background-color: #138496;
/* Darker button color on hover */
}
/* Button when enabled */
.btn1 {
color: #ffffff;
/* White text color */
background-color: #17a2b8;
/* Original button color */
border-color: #17a2b8;
/* Original border color */
padding: 10px;
border: 1px solid #17a2b8;
border-radius: 5px;
}
/* Button when enabled and hovered */
.btn1:hover:not([disabled]) {
background-color: #138496;
/* Darker color for hover */
border-color: #138496;
/* Adjust border color to match */
}
/* Button when disabled */
.btn1:disabled {
background-color: #17a2b8;
/* Original button color */
border-color: #17a2b8;
/* Original border color */
color: #6c757d;
/* Default text color for disabled state */
}
.space {
margin-top: 10px;
/* Adjust the top margin as needed */
}
.button-container {
display: flex;
justify-content: center;
width: 100%;
/* Adjust the width as needed */
margin: 0 auto;
/* Center the container horizontally */
}
</style>
</head>
<body>
<div class="container text-center">
<h1>DT XTech WebRTC Player</h1>
<p class="lead">Initiate WebRTC call with a remote peer</p>
<div class="connection-info">
<table>
<tbody>
<tr>
<th style="width: 100%">ICE Gathering State</th>
<td id="iceGatheringState_x">Unknown</td>
</tr>
</tbody>
</table>
<table>
<tbody>
<tr>
<th>ICE Connection State</th>
<td id="iceConnectionState_x">Unknown</td>
</tr>
</tbody>
</table>
<table>
<tbody>
<tr>
<th>Connection State</th>
<td id="connectionState_x">Unknown</td>
</tr>
</tbody>
</table>
</div>
<div class="row justify-content-center btn-container">
<div class="space"></div>
<div class="col-md-8">
<button id="uploadICEButton" class="btn1" style="width:100%">
Upload ICE Configuration
</button>
<div class="space"></div>
</div>
</div>
<div class="space"></div>
<div class="row justify-content-center">
<div class="col-md-8">
<div class="video-container">
<video id="localVideo" controls autoplay muted></video>
</div>
</div>
</div>
<div class="row justify-content-center btn-container">
<div class="col-md-8">
<button disabled id="startCallButton" class="btn btn-primary btn-lg">
Start Call
</button>
<button disabled id="stopCallButton" class="btn btn-danger btn-lg">
Stop Call
</button>
</div>
</div>
<div class="container">
<table class="table-offer">
<tr>
<td style="width: 30%; background-color: #17a2b8;">SDP Offer:</td>
<td><input id="createdOffer" type="text" style="width: 100%" readonly hidden /></td>
</tr>
</table>
<table>
<tbody>
<tr>
<td>
<input id="remoteAnswer" type="text" class="form-control" style="width:100%"
placeholder="Paste SDP answer here or upload it by pressing upload button">
<div class="space"></div>
<input type="button" value="Accept Answer" style="width:100%" onclick="acceptAnswer()" />
</td>
</tr>
</tbody>
</table>
<div class="row justify-content-center btn-container">
<div class="space"></div>
<div class="col-md-8">
<button disabled id="downloadButton" class="btn1">
Download SDP Offer
</button>
<button disabled id="uploadButton" class="btn1">
Upload SDP Answer
</button>
</div>
</div>
</div>
<hr />
<table class="table-offer">
<td><input id="text" type="text" style="width:100%" /></td>
<td><input type="button" value="Send Notification" style="width:100%" onclick="send_text()" /></td>
</table>
<hr />
</div>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>
<script>
var peer = null;
var candidates = [];
var offer = null;
let channel = null;
var jsonStringOffer = null;
var globalIceConfig = null;
const btnStart = document.getElementById('startCallButton')
const btnStop = document.getElementById('stopCallButton')
const btnDownload = document.getElementById("downloadButton")
const btnUpload = document.getElementById("uploadButton")
const btnIceUpload = document.getElementById("uploadICEButton")
const localVideoTag = document.getElementById('localVideo')
localVideoTag.style.display = "none"
document.getElementById('remoteAnswer').value = "";
btnStart.disabled = false;
btnDownload.disabled = true;
btnUpload.disabled = false;
async function downloadOffer() {
var encryptionKey = prompt("Enter password to encrypt SDP:");
if (encryptionKey !== null) {
// Convert the JSON string data to bytes
var dataBytes = new TextEncoder().encode(jsonStringOffer);
var salt = crypto.getRandomValues(new Uint8Array(16)); // Generate a random salt
try {
// Derive a key from the password using PBKDF2
var keyBytes = await deriveKeyFromPassword(encryptionKey, salt);
// Generate a cryptographic key from the derived key bytes
var cryptoKey = await crypto.subtle.importKey(
"raw", // Key format
keyBytes,
{ name: "AES-GCM" }, // AES algorithm with GCM mode
false, // false - Not extractable
["encrypt"] // Key usage
);
var iv_value = crypto.getRandomValues(new Uint8Array(12));
// console.log("SALT:", salt);
// console.log("IV:", iv_value);
// to extract and print key(key must be extractable!!)
// crypto.subtle.exportKey("raw", cryptoKey).then(function(rawKey) {
// // rawKey is the exported raw keying material
// console.log("Crypto key:", rawKey);
// }).catch(function(error) {
// console.error("Error exporting key:", error);
// });
// Encrypt the data using AES encryption with the generated key
var encryptedData = await crypto.subtle.encrypt(
{
name: "AES-GCM",
iv: iv_value, // Generate random IV
tagLength: 128 // Set the length of the authentication tag to 128 bits
},
cryptoKey,
dataBytes
);
// Create a JSON object to store the salt and encrypted data
// IV should be provided with the encrypted data so we do not need to add it to encryptedObject
// but this seems not to be the case since iv_value is different then first 12 bytes of data in
// created json file
var encryptedObject = {
salt: Array.from(salt),
iv: Array.from(iv_value),
data: Array.from(new Uint8Array(encryptedData)) // Convert encryptedData to array before storing
};
// Convert the object to a JSON string
var encryptedJSON = JSON.stringify(encryptedObject);
// Convert the encrypted data to a Blob
var blob = new Blob([encryptedJSON], { type: "application/json" });
// Create a temporary URL for the Blob
var url = URL.createObjectURL(blob);
// Create a temporary anchor element
var a = document.createElement("a");
a.href = url;
// Set the download attribute with the desired filename
a.download = "initiator_sdp_offer.json.enc";
// Append the anchor to the body and click it programmatically to trigger download
document.body.appendChild(a);
a.click();
// Remove the anchor from the body
document.body.removeChild(a);
// Revoke the URL to release memory
URL.revokeObjectURL(url);
} catch (error) {
console.error("Encryption error:", error);
}
} else {
console.warn("Skipping encryption of SDP data...");
// Create a Blob containing the JSON string data
var blob = new Blob([jsonStringOffer], { type: "application/json" });
// Create a temporary URL for the Blob
var url = URL.createObjectURL(blob);
// Create a temporary anchor element
var a = document.createElement("a");
a.href = url;
// Set the download attribute with the desired filename
a.download = "initiator_sdp_offer.json"; // Change the filename as desired
// Append the anchor to the body and click it programmatically to trigger download
document.body.appendChild(a);
a.click();
// Remove the anchor from the body
document.body.removeChild(a);
// Revoke the URL to release memory
URL.revokeObjectURL(url);
}
}
function uploadAnswer() {
// Create an input element of type file
var input = document.createElement('input');
input.type = 'file';
// Add event listener for when the file selection changes
input.addEventListener('change', async function (event) {
// Get the selected file
var file = event.target.files[0];
// Proceed with decryption
// Create a FileReader object to read the contents of the file
var reader = new FileReader();
// Add event listener for when the FileReader finishes reading the file
reader.addEventListener('load', async function (event) {
// Get the file content
var fileContent = event.target.result;
// Check if the file name ends with ".enc"
if (file.name.endsWith('.enc')) {
try {
// Parse the JSON content of the file
var encryptedObject = JSON.parse(fileContent);
// Extract salt and encrypted data from the parsed object
var salt = new Uint8Array(encryptedObject.salt);
// Extract IV
var iv = new Uint8Array(encryptedObject.iv);
var encryptedData = new Uint8Array(encryptedObject.data);
// Prompt the user for the decryption password
var decryptionKey = prompt("Enter password to decrypt the file:");
// console.log("Decryption password: ", decryptionKey)
// console.log("SALT:", salt)
// console.log("IV:", iv)
if (decryptionKey !== null) {
// Derive the key from the password using PBKDF2 with the salt
var keyBytes = await deriveKeyFromPassword(decryptionKey, salt);
// Decrypt the data using AES-GCM with the provided key and IV
var decryptedData = await decryptWithAESGCM(encryptedData, keyBytes, iv);
// Convert the decrypted data to a string
var decryptedContent = new TextDecoder().decode(decryptedData);
// Here you can do something with the decrypted content
//console.log('Decrypted content:', decryptedContent);
// Parse the decrypted JSON content into an object
var parsedContent = JSON.parse(decryptedContent);
document.getElementById('remoteAnswer').value = JSON.stringify(parsedContent);
} else {
console.warn("Decryption canceled by user.");
}
} catch (error) {
console.error('Error parsing or decrypting file:', error);
}
} else {
console.warn("Selected SDP file is not encrypted (.enc).");
// Handle non-encrypted files
var parsedContent = JSON.parse(fileContent);
document.getElementById('remoteAnswer').value = JSON.stringify(parsedContent);
}
});
// Read the contents of the selected file as text
reader.readAsText(file);
});
// Programmatically click the input element to trigger file selection
input.click();
}
async function decryptWithAESGCM(encryptedData, keyBytes, iv) {
try {
// Import the key from the provided key bytes
var cryptoKey = await crypto.subtle.importKey(
"raw", // Key format
keyBytes,
{ name: "AES-GCM" }, // AES algorithm with GCM mode
false, // Not extractable
["decrypt"] // Key usage
);
// to extract and print key(key must be extractable!!)
// crypto.subtle.exportKey("raw", cryptoKey).then(function(rawKey) {
// // rawKey is the exported raw keying material
// console.log("Crypto key:", rawKey);
// }).catch(function(error) {
// console.error("Error exporting key:", error);
// });
// Decrypt the data using AES-GCM with the provided key and IV
var decryptedData = await crypto.subtle.decrypt(
{
name: "AES-GCM",
iv: iv, // Use the provided IV
tagLength: 128 // Set the length of the authentication tag to 128 bits
},
cryptoKey,
encryptedData
);
return decryptedData;
} catch (error) {
console.error("AES-GCM decryption error:", error);
throw error;
}
}
async function deriveKeyFromPassword(password, salt) {
var encoder = new TextEncoder();
var passwordBuffer = encoder.encode(password);
var iterations = 100000; // Number of iterations (adjust according to your security requirements)
try {
// Derive a key using PBKDF2
var key = await crypto.subtle.importKey(
"raw",
passwordBuffer,
{ name: "PBKDF2" },
false,
["deriveKey"]
);
var derivedKey = await crypto.subtle.deriveKey(
{
name: "PBKDF2",
salt: salt,
iterations: iterations,
hash: { name: "SHA-256" }
},
key,
{ name: "AES-GCM", length: 256 }, // Derive a 256-bit key for AES-GCM
true,
["encrypt"]
);
// Export the derived key as raw bytes(key must be extractable!!)
var keyBytes = await crypto.subtle.exportKey("raw", derivedKey);
// to extract and print key(key must be extractable!!)
// crypto.subtle.exportKey("raw", derivedKey).then(function(rawKey) {
// // rawKey is the exported raw keying material
// console.log("Derived key:", rawKey);
// }).catch(function(error) {
// console.error("Error exporting key:", error);
// });
return keyBytes;
} catch (error) {
console.error("Key derivation error:", error);
throw error;
}
}
function uploadIceConfig() {
// Create an input element of type file
var input = document.createElement('input');
input.type = 'file';
// Add event listener for when the file selection changes
input.addEventListener('change', async function (event) {
// Get the selected file
var file = event.target.files[0];
// Proceed with decryption
// Create a FileReader object to read the contents of the file
var reader = new FileReader();
// Add event listener for when the FileReader finishes reading the file
reader.addEventListener('load', async function (event) {
// Get the file content
var fileContent = event.target.result;
globalIceConfig = JSON.parse(fileContent);
console.log("Loaded object:", globalIceConfig);
});
// Read the contents of the selected file as text
reader.readAsText(file);
});
// Programmatically click the input element to trigger file selection
input.click();
}
function createPeer() {
let config = {
iceServers: [
{ urls: "stun:stun.l.google.com:19302" }
]
}
// Check if globalIceConfig is a JSON object
if (typeof globalIceConfig === 'object' && globalIceConfig !== null) {
console.log("ICE Config properly loaded as a JSON object.", globalIceConfig);
config = globalIceConfig;
} else {
console.warn("ICE Config did not properly load as a JSON object. Using default config...");
}
console.log("Creating new peer connection...")
peer = new RTCPeerConnection(config);
peer.onicegatheringstatechange = iceGatheringStateChangeHandler;
peer.oniceconnectionstatechange = iceConnectionStateChangeHandler;
peer.onicecandidate = iceCandidateHandler;
peer.onicecandidateerror = iceCandidateErrorHandler;
peer.onconnectionstatechange = connectionStateChangeHandler;
peer.ondatachannel = dataChannelEvent;
channel = peer.createDataChannel('data');
channel.onmessage = (event) => alert(event.data)
peer.addEventListener('track', function (evt) {
if (evt.track.kind == 'video') {
console.log("Recieving media stream");
localVideoTag.srcObject = evt.streams[0];
localVideoTag.style.display = 'inline'
}
});
peer.addTransceiver('audio', {
direction: 'recvonly'
});
peer.addTransceiver('video', {
direction: 'recvonly'
});
}
async function iceGatheringStateChangeHandler() {
try {
let message = `iceGatheringState: ${peer.iceGatheringState}`;
console.log(message);
document.getElementById('iceGatheringState_x').innerText = peer.iceGatheringState
//socket.emit('broadcast', {channel: 'log', message: message });
switch (peer.iceGatheringState) {
case "new":
break;
case "gathering":
break;
case "complete":
document.getElementById('createdOffer').value = JSON.stringify(peer.localDescription)
document.getElementById('createdOffer').removeAttribute('hidden');
jsonStringOffer = JSON.stringify(peer.localDescription)
// console.log("Offer:", peer.localDescription)
const localDescription = peer.localDescription;
const sdp = localDescription.sdp;
const type = localDescription.type
console.log("Offer with ICE candidates included:", { sdp, type }); //show as object
btnDownload.disabled = false;
break;
default:
console.log("State not found");
break;
}
} catch (e) {
console.log("exception", e);
}
}
async function iceConnectionStateChangeHandler(event) {
try {
let message = `iceConnectionState: ${peer.iceConnectionState}`;
console.log(message);
document.getElementById('iceConnectionState_x').innerText = peer.iceConnectionState
//socket.emit('broadcast', {channel: 'log', message: message });
switch (peer.iceConnectionState) {
case "new":
break;
case "completed":
break;
case "disconnected":
break;
}
} catch (e) {
console.log("exception", e);
}
}
async function iceCandidateHandler(event) {
if (event.candidate) {
console.log("ICE_candidate", event.candidate);
}
}
async function iceCandidateErrorHandler(event) {
//console.error(event);
}
async function connectionStateChangeHandler() {
// ICEConnection: new -> checking -> connected -> completed -> disconnected -> closed -> failed
console.log(`Connection State: ${peer.connectionState}`);
document.getElementById('connectionState_x').innerText = peer.connectionState
switch (peer.connectionState) {
case "disconnected":
console.warn("Disconnected - wait recover connection")
break;
case "closed":
case "failed":
console.warn("Timeout. Trying to reconnect...")
break;
case "connected":
console.log("webRTC connection established")
break;
}
}
async function dataChannelEvent(event) {
console.log('dataChannel event occured')
channel = event.channel
channel.onmessage = (event) => alert(event.data)
}
async function acceptAnswer() {
console.log('Accepting Answer')
const answer = JSON.parse(document.getElementById('remoteAnswer').value)
console.log("Setting remoteDescription with provided answer");
await peer.setRemoteDescription(answer);
btnStart.disabled = true;
btnStop.disabled = false;
}
/**
* Call this method when you want to reduce the speed to
* test content hint, simulating situations when you have bad connections
*/
function forceKbps(sdp, speed) {
console.warn(`Forcekbps - ${speed} kbps`)
return sdp.replace(/a=mid:(.*)\r\n/g, 'a=mid:$1\r\nb=AS:' + speed + '\r\n');
}
async function send_text() {
const text = document.getElementById('text').value
channel.send(text)
}
async function startNegotiation() {
console.log("Negotiation - Creating offer and setting localDescription")
offer = await peer.createOffer();
//offer.sdp = forceKbps(offer.sdp, 50)
//await sendOfferToServer(offer.sdp);
console.log("Offer without ICE candidates:", offer)
await peer.setLocalDescription(offer)
}
//start
async function start() {
console.log('Start Call')
document.getElementById('createdOffer').removeAttribute('hidden');
document.getElementById('createdOffer').value = "Generating SDP offer, please wait..."
createPeer();
await startNegotiation();
}
function stop() {
console.log('Stop Call')
peer.close();
btnStart.disabled = false;
btnStop.disabled = true;
document.getElementById('createdOffer').setAttribute('hidden', true);
document.getElementById('remoteAnswer').value = "";
}
btnIceUpload.addEventListener("click", uploadIceConfig);
btnStart.addEventListener("click", start);
btnStop.addEventListener("click", stop);
btnDownload.addEventListener("click", downloadOffer);
btnUpload.addEventListener("click", uploadAnswer);
</script>
</body>
</html>