[microsoft/vscode] Connection Reset: [object Object] when making large diffs

### ROOT CAUSE The issue arises due to a WebSocket connection being reset when handling large diffs (over 100 lines). This is likely caused by the server's inability to process large messages efficiently, possibly due to: 1. **Server-side message size limits**: The WebSocket server may have a default maximum message size limit (e.g., 100 lines) which is exceeded by larger diffs. 2. **Network timeouts**: Large diffs may take longer to transmit, triggering network timeouts or server-side connection resets. 3. **Resource constraints**: The server may lack sufficient memory or processing power to handle large WebSocket messages, leading to connection resets. ### CODE FIX To resolve this, the extension should implement the following changes: 1. **Increase Server Message Size Limit**: - In the WebSocket server configuration (if the extension uses its own WebSocket server), increase the `maxPayload` or `maxMessageSize` limit. ```javascript // Example using ws (Node.js WebSocket library) const WebSocket = require('ws'); const wss = new WebSocket.Server({ port: 8080, maxPayload: 10000000 }); // 10MB limit ``` 2. **Client-Side Chunking**: - Modify the client-side code to split large diffs into smaller chunks (e.g., 100 lines each) and send them sequentially. ```javascript // Pseudocode for chunking diffs in the extension function chunkDiff(diff, chunkSize = 100) { const chunks = []; for (let i = 0; i < diff.length; i += chunkSize) { chunks.push(diff.slice(i, i + chunkSize)); } return chunks; } // Usage in the WebSocket send function const chunks = chunkDiff(largeDiff); chunks.forEach(chunk => { // Send each chunk separately websocket.send(JSON.stringify({ chunk })); }); ``` 3. **Error Handling and Retries**: - Implement robust error handling for connection resets and allow automatic retries for failed requests. ```javascript websocket.on('error', (err) => { console.error('Connection error:', err); // Retry logic here }); ``` 4. **Server-Side Timeout Adjustment**: - Adjust server-side timeout settings to accommodate larger diffs. ```javascript // Example in Node.js/ws server const WebSocket = require('ws'); const wss = new WebSocket.Server({ port: 8080, maxPayload: 10000000, perMessageDeflate: false // Disable compression to reduce overhead }); ``` 5. **Monitor and Logging**: - Add logging to track message sizes and connection issues for debugging. ```javascript websocket.on('message', (message) => { const data = JSON.parse(message); console.log('Received message size:', data.diff.length); }); ``` **Note**: These changes require access to the extension's codebase. If the extension uses a third-party WebSocket server, consult its documentation for configuration options. If the issue persists, check for network restrictions (e.g., firewall rules) and ensure both client and server are using compatible WebSocket versions.