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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 | import http from 'http'; import createObjectRouter from '../src/api/router.js'; // Create router with WebSocket support enabled const router = createObjectRouter({}, { enableWebSockets: true, enableMetrics: true, enableVersioning: true }); // Regular HTTP routes router.addRoute('GET', '/', (req, res) => { res.writeHead(200, { 'Content-Type': 'text/html', 'Content-Security-Policy': "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline';" }); res.end(`<!DOCTYPE html> <html> <head> <title>WebSocket Routing Demo</title> <style> body { font-family: Arial, sans-serif; max-width: 800px; margin: 0 auto; padding: 20px; } .container { margin: 20px 0; } #messages { border: 1px solid #ccc; height: 300px; overflow-y: scroll; padding: 10px; } .message { margin: 5px 0; padding: 5px; background: #f5f5f5; } input, button { margin: 5px; padding: 8px; } button { background: #007cba; color: white; border: none; cursor: pointer; } button:hover { background: #005a87; } </style> </head> <body> <h1>WebSocket Routing Demo</h1> <div class="container"> <h2>Chat Room</h2> <div id="messages"></div> <input type="text" id="messageInput" placeholder="Type a message..." /> <button id="sendBtn">Send</button> <button id="connectChatBtn">Connect to Chat</button> <button id="disconnectChatBtn">Disconnect</button> </div> <div class="container"> <h2>Real-time Notifications</h2> <div id="notifications"></div> <button id="connectNotificationsBtn">Connect to Notifications</button> <button id="disconnectNotificationsBtn">Disconnect</button> </div> <div class="container"> <h2>User-specific Channel</h2> <input type="text" id="userId" placeholder="Enter user ID..." /> <button id="connectUserBtn">Connect to User Channel</button> <button id="disconnectUserBtn">Disconnect</button> <div id="userMessages"></div> </div> <script> let chatWs = null; let notificationWs = null; let userWs = null; function addMessage(containerId, message) { const container = document.getElementById(containerId); const div = document.createElement('div'); div.className = 'message'; div.textContent = new Date().toLocaleTimeString() + ': ' + message; container.appendChild(div); container.scrollTop = container.scrollHeight; } function connectChat() { if (chatWs) return; chatWs = new WebSocket('ws://localhost:3003/ws/chat'); chatWs.onopen = () => addMessage('messages', 'Connected to chat'); chatWs.onmessage = (event) => addMessage('messages', 'Received: ' + event.data); chatWs.onclose = () => { addMessage('messages', 'Disconnected from chat'); chatWs = null; }; } function disconnectChat() { if (chatWs) { chatWs.close(); chatWs = null; } } function sendMessage() { const input = document.getElementById('messageInput'); if (chatWs && input.value) { chatWs.send(input.value); addMessage('messages', 'Sent: ' + input.value); input.value = ''; } } function connectNotifications() { if (notificationWs) return; notificationWs = new WebSocket('ws://localhost:3003/ws/notifications'); notificationWs.onopen = () => addMessage('notifications', 'Connected to notifications'); notificationWs.onmessage = (event) => addMessage('notifications', 'Notification: ' + event.data); notificationWs.onclose = () => { addMessage('notifications', 'Disconnected from notifications'); notificationWs = null; }; } function disconnectNotifications() { if (notificationWs) { notificationWs.close(); notificationWs = null; } } function connectUser() { const userId = document.getElementById('userId').value; if (!userId || userWs) return; userWs = new WebSocket('ws://localhost:3003/ws/user/' + userId); userWs.onopen = () => addMessage('userMessages', 'Connected to user channel: ' + userId); userWs.onmessage = (event) => addMessage('userMessages', 'User message: ' + event.data); userWs.onclose = () => { addMessage('userMessages', 'Disconnected from user channel'); userWs = null; }; } function disconnectUser() { if (userWs) { userWs.close(); userWs = null; } } // Event listeners document.getElementById('sendBtn').addEventListener('click', sendMessage); document.getElementById('connectChatBtn').addEventListener('click', connectChat); document.getElementById('disconnectChatBtn').addEventListener('click', disconnectChat); document.getElementById('connectNotificationsBtn').addEventListener('click', connectNotifications); document.getElementById('disconnectNotificationsBtn').addEventListener('click', disconnectNotifications); document.getElementById('connectUserBtn').addEventListener('click', connectUser); document.getElementById('disconnectUserBtn').addEventListener('click', disconnectUser); // Enter key support for message input document.getElementById('messageInput').addEventListener('keypress', (e) => { if (e.key === 'Enter') { sendMessage(); } }); // Auto-connect on page load setTimeout(() => { connectChat(); connectNotifications(); }, 1000); </script> </body> </html>`); }); // Admin endpoints router.addRoute('GET', '/admin/ws/connections', (req, res) => { const connections = router.getWebSocketConnections(); res.writeHead(200, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ total: connections.length, connections: connections }, null, 2)); }); router.addRoute('POST', '/admin/ws/broadcast', async (req, res) => { let body = ''; req.on('data', chunk => body += chunk); req.on('end', () => { try { const { path, message } = JSON.parse(body); router.broadcast(path || '*', message); res.writeHead(200, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ success: true, broadcasted: message })); } catch (error) { res.writeHead(400, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ error: error.message })); } }); }); router.addRoute('GET', '/admin/metrics', (req, res) => { res.writeHead(200, { 'Content-Type': 'application/json' }); res.end(JSON.stringify(router.metrics, null, 2)); }); // WebSocket routes router.addWebSocketRoute('/ws/chat', (ws) => { console.log('New chat connection established'); // Broadcast user joined message to all other users setTimeout(() => router.broadcast('/ws/chat', 'A user joined the chat'), 100); ws.send('Welcome to the chat room!'); ws.onmessage = (event) => { const message = event.data; console.log('Chat message received:', message); // Broadcast to all chat connections router.broadcast('/ws/chat', `User says: ${message}`); }; // Store the connection path for disconnect broadcast ws._chatPath = '/ws/chat'; ws._router = router; ws.socket.on('close', () => { console.log('Chat connection closed, broadcasting disconnect message'); // Broadcast user left message to remaining users BEFORE connection cleanup if (ws._router && ws._chatPath) { // Use setTimeout to ensure broadcast happens before connection cleanup setTimeout(() => { ws._router.broadcast(ws._chatPath, 'A user left the chat', ws.id); }, 10); } }); }); router.addWebSocketRoute('/ws/notifications', (ws) => { console.log('New notification connection established'); ws.send('Connected to notifications'); // Send periodic notifications const interval = setInterval(() => { if (ws.readyState === 1) { ws.send(`Notification at ${new Date().toLocaleTimeString()}`); } else { clearInterval(interval); } }, 5000); ws.socket.on('close', () => { console.log('Notification connection closed'); clearInterval(interval); }); }); // Parameterized WebSocket route router.addWebSocketRoute('/ws/user/:userId', (ws) => { const userId = ws.params.userId; console.log(`New user connection for: ${userId}`); ws.send(`Welcome user ${userId}!`); ws.onmessage = (event) => { const message = event.data; console.log(`Message from user ${userId}:`, message); ws.send(`Echo: ${message}`); }; ws.socket.on('close', () => { console.log(`User ${userId} disconnected`); }); }); // Versioned WebSocket route router.addWebSocketRoute('/ws/api/data', (ws) => { console.log('API data connection established'); const version = ws.version || 'v1'; ws.send(`Connected to API data stream (${version})`); // Send different data based on version const interval = setInterval(() => { if (ws.readyState === 1) { const data = version === 'v2' ? { timestamp: Date.now(), data: 'enhanced data', version } : { time: new Date().toISOString(), message: 'basic data' }; ws.send(JSON.stringify(data)); } else { clearInterval(interval); } }, 3000); ws.socket.on('close', () => { clearInterval(interval); }); }, { version: 'v1' }); // Create HTTP server const server = http.createServer((req, res) => { router.handle(req, res); }); // Handle WebSocket upgrade server.on('upgrade', (request, socket, head) => { router.handleWebSocketUpgrade(request, socket, head); }); const PORT = 3003; server.listen(PORT, () => { console.log(`WebSocket routing demo server running on http://localhost:${PORT}`); console.log('Available endpoints:'); console.log(' GET / - Demo page'); console.log(' WS /ws/chat - Chat room'); console.log(' WS /ws/notifications - Real-time notifications'); console.log(' WS /ws/user/:userId - User-specific channel'); console.log(' WS /ws/api/data - Versioned API data stream'); console.log(' GET /admin/ws/connections - List active connections'); console.log(' POST /admin/ws/broadcast - Broadcast message'); console.log(' GET /admin/metrics - Performance metrics'); }); |