FireFox无法连接WebSocket服务器，配置文件变量不显示求助

Hey there, let's work through this WebSocket connection issue step by step—this error is almost certainly why your config variables aren't showing up (since they're probably being fetched over that WebSocket link). Here's what to check:

1. Confirm your WebSocket server is running & listening on port 81 #

First things first: make sure the WebSocket server (whether it's your Java or PHP backend) is actually up and running, and configured to listen on port 81.

• On Windows, open Command Prompt and run:

  netstat -an | findstr :81
  

• On Linux/macOS, run this in Terminal:

  lsof -i :81  # Or netstat -tulpn | grep :81
  

If you get no results, your server isn't running, or it's listening on the wrong port. Double-check your server code to ensure it's bound to 1.1.1.26:81 (or 0.0.0.0:81 to listen on all interfaces).

2. Verify the IP & port are accessible #

• Is 1.1.1.26 the correct IP for your server? If you're testing locally, you might need to use localhost or 127.0.0.1 instead of a public IP. If it's a remote server, confirm that IP matches the server's public address.
• Check if port 81 is open:
  • Make sure your server's firewall (like ufw on Linux, Windows Firewall) allows incoming connections on port 81.
  • If you're using a cloud provider (AWS, Azure, etc.), double-check your security group settings to allow traffic on port 81.

3. Check for origin restrictions or CORS issues #

Firefox might block the connection if your WebSocket server restricts which domains can connect.

• For PHP (e.g., using Ratchet), ensure you've set up origin validation correctly (allow your website's domain).
• For Java servers, verify that your WebSocket endpoints are configured to accept requests from your site's origin.

4. Test the connection directly to isolate issues #

Skip your client code for a minute and test the WebSocket directly:

• Open Firefox's DevTools (F12), go to the Console tab, and run:

  const ws = new WebSocket('ws://1.1.1.26:81');
  ws.onerror = (err) => console.error('WebSocket Error:', err);
  ws.onclose = (event) => console.log('Closed:', event.code, event.reason);
  

This will show you more detailed error info (like why the connection failed).

• Alternatively, use a tool like wscat (install via npm: npm install -g wscat) and run:

  wscat -c ws://1.1.1.26:81
  

If this fails, the problem is with your server setup, not your client code.

5. Debug your client WebSocket code #

Your code snippet cuts off mid-function (push(ca...), so double-check for syntax errors or missing logic:

• Ensure the url passed to FancyWebSocket is correct (is it hardcoded to ws://1.1.1.26:81 when it should be dynamic?).
• Add error handling callbacks to your WebSocket connection to catch issues early:

  this.connect = function() {
    conn = new WebSocket(ws_url);
    // Add error/close handlers
    conn.onerror = function(error) {
      console.error('WebSocket Error:', error);
    };
    conn.onclose = function(event) {
      console.log('WebSocket Closed:', event.code, event.reason);
    };
    // ... rest of your connect logic
  };
  

6. Check for HTTPS conflicts (if your site uses HTTPS) #

If your website is served over https://, Firefox will block insecure ws:// connections by default. You'll need to:

• Switch to wss:// (WebSocket Secure) by configuring your WebSocket server to use SSL certificates.
• For local testing only: Temporarily allow mixed content in Firefox (go to about:config, search for security.mixed_content.block_active_content, and set it to false—don't do this in production!).

Start with the first two checks (server running + port open)—those are the most common culprits. Once you get the WebSocket connection working, your config variables should start showing up as expected.

内容的提问来源于stack exchange，提问作者Dustin Budzene