Proxy fetch error debug

Proxy fetch error: TypeError: Failed to fetch Context proxy-manager.js Stack Trace proxy-manager.js:57 (anonymous function) 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 // proxy-manager.js class ProxyManager { constructor() { this.isRunning = false; this.proxyUrl = 'http://localhost:11435'; this.ollamaUrl = 'http://localhost:11434'; } async startProxy() { if (!this.isRunning) { try { const response = await fetch(`${this.ollamaUrl}/api/version`); if (!response.ok) { throw new Error('Cannot connect to Ollama server'); } this.isRunning = true; console.log('Connected to Ollama'); } catch (error) { console.error('Failed to connect:', error); throw new Error('Failed to connect to Ollama. Please ensure it is running.'); } } } async stopProxy() { if (this.isRunning) { this.isRunning = false; console.log('Proxy stopped'); } } isProxyRunning() { return this.isRunning; } async proxyFetch(url, options = {}) { // Replace Ollama URL with proxy URL const proxyUrl = url.replace(this.ollamaUrl, this.proxyUrl); const enhancedOptions = { ...options, headers: { ...options.headers, 'Origin': chrome.runtime.getURL(''), }, mode: 'cors', credentials: 'omit' }; try { const response = await fetch(proxyUrl, enhancedOptions); if (!response.ok) { throw new Error(`HTTP error! status: ${response.status}`); } return response; } catch (error) { console.error('Proxy fetch error:', error); throw error; } } } export const proxyManager = new ProxyManager(); Detailed error: TypeError: Failed to fetch Error: Error: Failed to connect to Ollama: Failed to fetch

This error suggests that your JavaScript code is failing to fetch data from `http://localhost:11434`, which is your Ollama server. Here are a few things to check: ### **1. Ensure Ollama is Running** - Open a terminal and run: ```sh curl http://localhost:11434/api/version ``` If this fails, Ollama is not running. Start it with: ```sh ollama serve ``` If you’re running Ollama inside a Docker container, ensure the container is running and port `11434` is exposed. ### **2. CORS Issue in Browser Extension** If you're running this script inside a Chrome extension, the browser's CORS policies might be blocking the request. Try: - Adding `"permissions": ["<all_urls>"]` in your `manifest.json`. - Running your extension with `--disable-web-security` (not recommended for production). ### **3. Check Proxy URL** Your `proxyFetch` function replaces `ollamaUrl` (`http://localhost:11434`) with `proxyUrl` (`http://localhost:11435`). Make sure the proxy server on `11435` is actually running. If it's not, either start it or change your script to use `11434` directly. ### **4. Verify Network Connection** - Open your browser’s **DevTools (F12) → Network Tab**, and check if the request to `http://localhost:11434` fails. - Try making a request manually: ```sh curl -v http://localhost:11434 ``` ### **5. Debug the Fetch Call** Modify your code to log additional error details: ```js try { const response = await fetch(proxyUrl, enhancedOptions); console.log('Fetch response:', response); if (!response.ok) { throw new Error(`HTTP error! status: ${response.status}`); } return response; } catch (error) { console.error('Proxy fetch error:', error.message, error.stack); throw error; } ``` Let me know what errors or logs you get!

The error message “TypeError: Failed to fetch” means that the fetch call did not receive any valid response from the server. This can happen for several reasons: - **Server Unavailability:** The code is trying to contact the Ollama server at `http://localhost:11434` (and later the proxy at `http://localhost:11435`). If either server isn’t running or isn’t listening on those ports, the fetch call will fail. - **Incorrect URL Replacement:** In the `proxyFetch` method, the code replaces the Ollama URL with the proxy URL. If the URL passed into `proxyFetch` does not exactly match the expected pattern (i.e., it does not contain `this.ollamaUrl`), the replacement won’t work as intended, and the resulting URL might be malformed. - **CORS or Network Restrictions:** Even though the code sets the `mode` to `'cors'` and adds an `Origin` header using `chrome.runtime.getURL('')`, there might still be cross-origin issues if the server isn’t configured to allow requests from that origin. - **Local Environment Issues:** In a development setting (for example, when developing a Chrome extension), network policies, firewall rules, or browser-specific restrictions can block local requests. ### Steps to Troubleshoot 1. **Verify Server Status:** Make sure that both the Ollama server (port 11434) and the proxy server (port 11435) are running and accessible. You can try accessing them directly via a browser or using a tool like cURL. 2. **Check the URL Format:** Confirm that the URL passed into the `proxyFetch` method includes the exact substring `this.ollamaUrl` so that the replacement logic works as intended. 3. **Review CORS Settings:** Check the server’s CORS configuration. The server should allow requests from the origin provided by `chrome.runtime.getURL('')`. You might need to adjust the server settings to allow requests from your extension or development environment. 4. **Use Developer Tools:** Open your browser’s developer console and inspect the network requests. Look for any additional error messages or status codes that might indicate what went wrong with the fetch. 5. **Test with Minimal Code:** Isolate the fetch call in a simpler environment to verify connectivity. This can help determine if the problem is in the network/server configuration or in the proxy logic itself. By following these steps, you should be able to pinpoint whether the issue is due to server availability, URL configuration, CORS restrictions, or another networking problem.