archive

2021-09-14 06:30:17 -06:00
commit 7ab1723a5e
327 changed files with 127104 additions and 0 deletions
--- a/shanet-webrtc/.gitignore
+++ b/shanet-webrtc/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+npm-debug.log
--- a/shanet-webrtc/LICENSE
+++ b/shanet-webrtc/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Shane Tully
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
--- a/shanet-webrtc/README.md
+++ b/shanet-webrtc/README.md
@@ -0,0 +1,56 @@
+WebRTC Example
+==============
+
+#### shane tully (shanetully.com)
+
+An 'as simple as it gets' WebRTC example.
+
+See [https://shanetully.com/2014/09/a-dead-simple-webrtc-example/](https://shanetully.com/2014/09/a-dead-simple-webrtc-example/) for a detailed walkthrough of the code.
+
+Note: This repo is kept updated. The general ideas are there, but the above blog post may be somewhat out of date with the code in this repo.
+
+## Usage
+
+The signaling server uses Node.js and `ws` and can be started as such:
+
+```
+$ npm install
+$ npm start
+```
+
+With the server running, open a recent version of Firefox, Chrome, or Safari and visit `https://localhost:8443`.
+
+* Note the HTTPS! There is no redirect from HTTP to HTTPS.
+* Some browsers or OSs may not allow the webcam to be used by multiple pages at once. You may need to use two different browsers or machines.
+
+## TLS
+
+Recent versions of Chrome require secure websockets for WebRTC. Thus, this example utilizes HTTPS. Included is a self-signed certificate that must be accepted in the browser for the example to work.
+
+## Problems?
+
+WebRTC is a rapidly evolving beast. Being an example that I don't check often, I rely on users for reports if something breaks. Issues and pull requests are greatly appreciated.
+
+## License
+
+The MIT License (MIT)
+
+Copyright (c) 2014 Shane Tully
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/shanet-webrtc/cert.pem
+++ b/shanet-webrtc/cert.pem
@@ -0,0 +1,32 @@
+-----BEGIN CERTIFICATE-----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+Gk0vNCVZjBPl2/VkCanPBjIPKPtfIgVa6ZjXFzW88gqvkfFoSyr7Nqf59jM+4IOY
+C4o47jFAPVXeIKGZDXeu5KLlFngdQ3TCKCTT79oJCn1354kOmBMsKKbVG1G2mAy6
+ngpkAIQ4Bsul3dHK6kpoAzI8/cRD3p7vIuwq46GTFz47iq9M3FZxWu3F5j5XdLvt
+43iN24xKlHc5AfAtPGdqbozmZ4INhL2sm9HvIMUy1fnL1aYZpnM7KOpzEe+pN39
+2B/GemUwVENRoCRv0qLadOQtCO/Nu4QJNV9gHteQ0rVLFAgbp1hqnjyYkLDmZ9WF
+nC9GVS1yhVK+Wwgp8Xrcti4O0c0HtCNrfAMECUOL7QW7KV6wzr9ZdBvf0v2WvbbM
+KKNHDiqV4JiP4WWFN+pc2lOVaLJwTe4FrbG7AA==
+-----END CERTIFICATE-----
--- a/shanet-webrtc/client/index.html
+++ b/shanet-webrtc/client/index.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src="https://webrtc.github.io/adapter/adapter-latest.js"></script>
+    <script src="webrtc.js"></script>
+    <style>
+      video {
+         max-width: 100%;
+         min-width: 100%;
+         border: 1px solid black;
+      }
+    </style>
+  </head>
+
+  <body>
+    <video id="localVideo" autoplay muted ></video>
+    <video id="remoteVideo" autoplay ></video>
+
+    <br />
+
+    <input type="button" id="start" onclick="start(true)" value="Start Video"></input>
+
+    <script type="text/javascript">
+        pageReady();
+    </script>
+  </body>
+</html>
--- a/shanet-webrtc/client/webrtc.js
+++ b/shanet-webrtc/client/webrtc.js
@@ -0,0 +1,103 @@
+var localVideo;
+var localStream;
+var remoteVideo;
+var peerConnection;
+var uuid;
+var serverConnection;
+
+var peerConnectionConfig = {
+  'iceServers': [
+    {'urls': 'stun:stun.stunprotocol.org:3478'},
+    {'urls': 'stun:stun.l.google.com:19302'},
+  ]
+};
+
+function pageReady() {
+  uuid = createUUID();
+
+  localVideo = document.getElementById('localVideo');
+  remoteVideo = document.getElementById('remoteVideo');
+
+  serverConnection = new WebSocket('wss://' + window.location.hostname + '');
+  serverConnection.onmessage = gotMessageFromServer;
+
+  var constraints = {
+    video: true,
+    audio: true,
+  };
+
+  if(navigator.mediaDevices.getUserMedia) {
+    navigator.mediaDevices.getUserMedia(constraints).then(getUserMediaSuccess).catch(errorHandler);
+  } else {
+    alert('Your browser does not support getUserMedia API');
+  }
+}
+
+function getUserMediaSuccess(stream) {
+  localStream = stream;
+  localVideo.srcObject = stream;
+}
+
+function start(isCaller) {
+  peerConnection = new RTCPeerConnection(peerConnectionConfig);
+  peerConnection.onicecandidate = gotIceCandidate;
+  peerConnection.ontrack = gotRemoteStream;
+  peerConnection.addStream(localStream);
+
+  if(isCaller) {
+    peerConnection.createOffer().then(createdDescription).catch(errorHandler);
+  }
+}
+
+function gotMessageFromServer(message) {
+  if(!peerConnection) start(false);
+
+  var signal = JSON.parse(message.data);
+
+  // Ignore messages from ourself
+  if(signal.uuid == uuid) return;
+
+  if(signal.sdp) {
+    peerConnection.setRemoteDescription(new RTCSessionDescription(signal.sdp)).then(function() {
+      // Only create answers in response to offers
+      if(signal.sdp.type == 'offer') {
+        peerConnection.createAnswer().then(createdDescription).catch(errorHandler);
+      }
+    }).catch(errorHandler);
+  } else if(signal.ice) {
+    peerConnection.addIceCandidate(new RTCIceCandidate(signal.ice)).catch(errorHandler);
+  }
+}
+
+function gotIceCandidate(event) {
+  if(event.candidate != null) {
+    serverConnection.send(JSON.stringify({'ice': event.candidate, 'uuid': uuid}));
+  }
+}
+
+function createdDescription(description) {
+  console.log('got description');
+
+  peerConnection.setLocalDescription(description).then(function() {
+    serverConnection.send(JSON.stringify({'sdp': peerConnection.localDescription, 'uuid': uuid}));
+  }).catch(errorHandler);
+}
+
+function gotRemoteStream(event) {
+  console.log('got remote stream');
+  remoteVideo.srcObject = event.streams[0];
+}
+
+function errorHandler(error) {
+  console.log(error);
+}
+
+// Taken from http://stackoverflow.com/a/105074/515584
+// Strictly speaking, it's not a real UUID, but it gets the job done here
+function createUUID() {
+  function s4() {
+    return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
+  }
+
+  return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
+}
--- a/shanet-webrtc/generate_cert.sh
+++ b/shanet-webrtc/generate_cert.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -nodes
--- a/shanet-webrtc/key.pem
+++ b/shanet-webrtc/key.pem
@@ -0,0 +1,52 @@
+-----BEGIN PRIVATE KEY-----
+MIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQDK6tGvS44n2D+1
+BJ+c50wmrZEjJUREW/g9jY9CX5hpIuc9hPxzkt5aaAXyBampPv/gGfF6YOxMDUWb
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+BfXBs2eSpBE70GwrztgDS2fco6tzQQ==
+-----END PRIVATE KEY-----
--- a/shanet-webrtc/package-lock.json
+++ b/shanet-webrtc/package-lock.json
@@ -0,0 +1,33 @@
+{
+  "name": "WebRTC-Example",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "async-limiter": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
+      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
+    },
+    "safe-buffer": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
+      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
+    },
+    "ultron": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
+      "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og=="
+    },
+    "ws": {
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
+      "integrity": "sha512-nnWLa/NwZSt4KQJu51MYlCcSQ5g7INpOrOMt4XV8j4dqTXdmlUmSHQ8/oLC069ckre0fRsgfvsKwbTdtKLCDkA==",
+      "requires": {
+        "async-limiter": "~1.0.0",
+        "safe-buffer": "~5.1.0",
+        "ultron": "~1.1.0"
+      }
+    }
+  }
+}
--- a/shanet-webrtc/package.json
+++ b/shanet-webrtc/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "WebRTC-Example",
+  "version": "1.0.0",
+  "description": "An 'as simple as it gets' WebRTC example.",
+  "main": "index.js",
+  "scripts": {
+    "start": "node server/server.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/shanet/WebRTC-Example.git"
+  },
+  "keywords": [
+    "webrtc"
+  ],
+  "author": "shane tully",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/shanet/WebRTC-Example/issues"
+  },
+  "homepage": "https://github.com/shanet/WebRTC-Example#readme",
+  "dependencies": {
+    "ws": "^3.3.2"
+  }
+}
--- a/shanet-webrtc/server/server.js
+++ b/shanet-webrtc/server/server.js
@@ -0,0 +1,59 @@
+const HTTPS_PORT = 58080;
+
+const fs = require('fs');
+const https = require('https');
+const WebSocket = require('ws');
+const WebSocketServer = WebSocket.Server;
+
+// Yes, TLS is required
+const serverConfig = {
+  key: fs.readFileSync('key.pem'),
+  cert: fs.readFileSync('cert.pem'),
+};
+
+// ----------------------------------------------------------------------------------------
+
+// Create a server for the client html page
+const handleRequest = function(request, response) {
+  // Render the single client html file for any request the HTTP server receives
+  console.log('request received: ' + request.url);
+
+  if(request.url === '/') {
+    response.writeHead(200, {'Content-Type': 'text/html'});
+    response.end(fs.readFileSync('client/index.html'));
+  } else if(request.url === '/webrtc.js') {
+    response.writeHead(200, {'Content-Type': 'application/javascript'});
+    response.end(fs.readFileSync('client/webrtc.js'));
+  }
+};
+
+const httpsServer = https.createServer(serverConfig, handleRequest);
+httpsServer.listen(HTTPS_PORT, '0.0.0.0');
+
+// ----------------------------------------------------------------------------------------
+
+// Create a server for handling websocket calls
+const wss = new WebSocketServer({server: httpsServer});
+
+wss.on('connection', function(ws) {
+  ws.on('message', function(message) {
+    // Broadcast any received message to all clients
+    console.log('received: %s', message);
+    wss.broadcast(message);
+  });
+});
+
+wss.broadcast = function(data) {
+  this.clients.forEach(function(client) {
+    if(client.readyState === WebSocket.OPEN) {
+      client.send(data);
+    }
+  });
+};
+
+console.log('Server running. Visit https://localhost:' + HTTPS_PORT + ' in Firefox/Chrome.\n\n\
+Some important notes:\n\
+  * Note the HTTPS; there is no HTTP -> HTTPS redirect.\n\
+  * You\'ll also need to accept the invalid TLS certificate.\n\
+  * Some browsers or OSs may not allow the webcam to be used by multiple pages at once. You may need to use two different browsers or machines.\n'
+);