wip webrtc

packages/webrtc-server/README.md

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+# webrtc-server
+
+```
+yarn
+yarn start
+```
+
+Websocket (socket.io) based signaling server for WebRTC.

packages/webrtc-server/index.js

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+const PORT = process.env.PORT || 3000;
+const io = require('socket.io')(PORT, {
+  cors: {
+    origin: "*",
+    methods: ["GET", "POST"]
+  }
+});
+
+const peerSocketMap = new Map();
+const socketPeerMap = new Map();
+
+io.on('connection', socket => {
+  console.log(`New client connected, socket ID: ${socket.id}`);
+
+  const emitToTarget = (eventType, data, recipient) => {
+    const targetSocketId = peerSocketMap.get(recipient);
+    const sender = socketPeerMap.get(socket.id);
+    if (sender && targetSocketId) {
+      io.to(targetSocketId).emit(eventType, {...data, sender});
+    }
+  };
+
+  socket.on('offer', data => emitToTarget('offer', data, data.recipient));
+  socket.on('answer', data => emitToTarget('answer', data, data.recipient));
+  socket.on('candidate', data => emitToTarget('candidate', data, data.recipient));
+
+  socket.on('hello', peerId => {
+    console.log(`Received hello from ${peerId}`);
+    peerSocketMap.set(peerId, socket.id);
+    socketPeerMap.set(socket.id, peerId);
+    socket.broadcast.emit('hello', peerId);
+  });
+
+  socket.on('disconnect', () => {
+    peerSocketMap.delete(socketPeerMap.get(socket.id));
+    socketPeerMap.delete(socket.id);
+    console.log(`Client disconnected, socket ID: ${socket.id}`);
+  });
+});
+
+console.log(`Signaling server running on port ${PORT}`);
+
+const Ministun = require("ministun");
+
+const stunConfig = {
+	udp4: true,
+	udp6: true,
+	port: 3478,
+	log: console.log,
+	err: console.err,
+	sw: true
+};
+
+const server = new Ministun(stunConfig);
+
+console.log(`STUN server running on port ${stunConfig.port}`)

packages/webrtc-server/package.json

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+{
+  "name": "nostr-webrtc-server",
+  "dependencies": {
+    "ministun": "^1.0.6",
+    "nostr-tools": "^2.0.2",
+    "socket.io": "^4.7.2"
+  },
+  "scripts": {
+    "start": "node index.js"
+  }
+}