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Request Activity Monitor

\n \n Connecting...\n

\n \n

Total Requests

Success (2xx)

Errors (4xx/5xx)

0ms

Avg Duration

\n \n

\n \n \n \n \n \n

\n \n

Live Request Feed

\n \n

\n\n \n\n","deleted",false,"label",[19,36],"5ac589b6-9405-11f0-ab17-0224a6c84d84",["D",1758141116705],"directory",[19],{"_34":80,"_13":81,"_37":82,"_39":-5,"_41":42,"_43":83,"_45":46,"_47":84,"_17":49,"_50":59,"_51":-5,"_53":54,"_55":-5,"_70":85,"_18":86},{"_34":57,"_13":19,"_37":40,"_39":-5,"_41":42,"_43":44,"_45":46,"_47":73,"_17":49,"_50":59,"_51":-5,"_53":54,"_55":-5,"_70":74,"_18":75},{"_34":64,"_13":65,"_37":66,"_39":-5,"_41":42,"_43":67,"_45":46,"_47":68,"_17":49,"_50":24,"_51":69,"_53":54,"_55":-5,"_70":71,"_18":72},"68767c46-9405-11f0-bf8e-0224a6c84d84","README.md","68767d18-9405-11f0-bf8e-0224a6c84d84",3,["D",1758141139677],"# Request Activity Monitor\n\nA real-time request activity visualization system that tracks and displays all HTTP requests to your Val Town application with live updates via Server-Sent Events (SSE).\n\n## Features\n\n- **Real-time monitoring**: Live updates of all incoming requests via SSE\n- **Request statistics**: Total requests, success rate, error count, and average response time\n- **Request details**: Method, path, status code, duration, IP address, and user agent\n- **Test endpoints**: Built-in buttons to generate test traffic\n- **Responsive design**: Works on desktop and mobile devices\n- **Always returns 200 OK**: The monitoring endpoint itself never fails\n\n## Project Structure\n\n```\n├── backend/\n│ └── index.ts # Main Hono server with SSE and request logging\n├── frontend/\n│ └── index.html # Dashboard UI with live updates\n└── README.md # This file\n```\n\n## How It Works\n\n1. **Request Middleware**: All requests are logged via Hono middleware that captures:\n - Request method, path, and headers\n - Response status and duration\n - Client IP and user agent\n - Unique request ID and timestamp\n\n2. **Server-Sent Events**: The `/api/events` endpoint maintains persistent connections with browsers and broadcasts new request data in real-time\n\n3. **In-Memory Storage**: Recent requests (last 100) are stored in memory for quick access and initial page load\n\n4. **Live Dashboard**: The frontend connects via SSE and updates the UI immediately when new requests arrive\n\n## API Endpoints\n\n- `GET /` - Main dashboard (always returns 200 OK)\n- `GET /api/events` - SSE endpoint for live request updates\n- `GET /api/requests` - JSON API for recent requests\n- `GET /api/test` - Test endpoint for generating activity\n- `POST /api/test` - Test POST endpoint\n- `GET /api/slow` - Slow endpoint (2s delay) for testing\n- `GET /*` - Any other path returns 404 (also logged)\n\n## Usage\n\n1. Visit the main dashboard at `/`\n2. The page will automatically connect to the SSE stream\n3. Use the test buttons to generate sample requests\n4. Watch requests appear in real-time with full details\n5. Monitor statistics in the summary cards\n\n## Technical Details\n\n- Built with Hono for the backend API framework\n- Uses native Server-Sent Events for real-time updates\n- TailwindCSS for responsive styling\n- No external dependencies for the frontend\n- Handles SSE connection failures with automatic reconnection\n- Animates new requests for better visual feedback\n\n## Connection Status\n\nThe dashboard shows connection status with colored indicators:\n- 🟢 Green: Connected to SSE stream\n- 🟡 Yellow: Connecting/reconnecting\n- 🔴 Red: Disconnected\n\nThe system automatically attempts to reconnect if the SSE connection is 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simplicity)\nconst recentRequests: Array<{\n id: string;\n timestamp: string;\n method: string;\n path: string;\n userAgent?: string;\n ip?: string;\n status: number;\n duration?: number;\n}> = [];\n\n// Middleware to log all requests\napp.use(\"*\", async (c, next) => {\n const startTime = Date.now();\n const requestId = crypto.randomUUID();\n \n const requestData = {\n id: requestId,\n timestamp: new Date().toISOString(),\n method: c.req.method,\n path: c.req.path,\n userAgent: c.req.header(\"user-agent\"),\n ip: c.req.header(\"cf-connecting-ip\") || c.req.header(\"x-forwarded-for\") || \"unknown\",\n status: 200, // Will be updated after response\n };\n\n await next();\n \n const duration = Date.now() - startTime;\n const finalRequestData = {\n ...requestData,\n status: c.res.status,\n duration,\n };\n\n // Add to recent requests (keep last 100)\n recentRequests.unshift(finalRequestData);\n if (recentRequests.length > 100) {\n recentRequests.pop();\n }\n\n // Broadcast to all SSE connections\n const message = `data: ${JSON.stringify(finalRequestData)}\\n\\n`;\n for (const controller of sseConnections) {\n try {\n controller.enqueue(new TextEncoder().encode(message));\n } catch (error) {\n // Remove dead connections\n sseConnections.delete(controller);\n }\n }\n});\n\n// Serve frontend files\napp.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\napp.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n\n// Main dashboard route\napp.get(\"/\", async c => {\n let html = await readFile(\"/frontend/index.html\", import.meta.url);\n \n // Inject initial data\n const initialData = {\n recentRequests: recentRequests.slice(0, 50), // Send last 50 requests\n };\n \n const dataScript = ``;\n \n html = html.replace(\"\", `${dataScript}`);\n return c.html(html);\n});\n\n// SSE endpoint for live updates\napp.get(\"/api/events\", c => {\n const stream = new ReadableStream({\n start(controller) {\n // Add connection to active connections\n sseConnections.add(controller);\n \n // Send initial connection message\n const welcomeMessage = `data: ${JSON.stringify({\n type: \"connected\",\n timestamp: new Date().toISOString(),\n message: \"Connected to request activity stream\"\n })}\\n\\n`;\n \n controller.enqueue(new TextEncoder().encode(welcomeMessage));\n },\n cancel() {\n // Remove connection when client disconnects\n sseConnections.delete(this);\n }\n });\n\n return new Response(stream, {\n headers: {\n \"Content-Type\": \"text/event-stream\",\n \"Cache-Control\": \"no-cache\",\n \"Connection\": \"keep-alive\",\n },\n });\n});\n\n// API endpoint to get recent requests\napp.get(\"/api/requests\", c => {\n return c.json({\n requests: recentRequests.slice(0, 50),\n total: recentRequests.length,\n });\n});\n\n// Test endpoints to generate activity\napp.get(\"/api/test\", c => {\n return c.json({ message: \"Test endpoint hit!\", timestamp: new Date().toISOString() });\n});\n\napp.post(\"/api/test\", async c => {\n const body 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