Troubleshooting: Failed to get echo data from WPAPI

Step 1: Verify IP Detection

Add this code snippet to your theme’s functions.php file:

function ip_check_callback() {
    $data = array(
        'remote_ip'         => $_SERVER['REMOTE_ADDR'] ?? 'Null',
        'x_forwarded_for'   => $_SERVER['HTTP_X_FORWARDED_FOR'] ?? 'Null',
        'proxy_remote_addr' => $_SERVER['PROXY_REMOTE_ADDR'] ?? 'Null'
    );
    
    return rest_ensure_response($data);
}

function register_ip_check_route() {
    register_rest_route('lscwp', '/ip-check', array(
        'methods'  => 'GET',
        'callback' => 'ip_check_callback'
    ));
}

add_action('rest_api_init', 'register_ip_check_route');

This creates a REST API endpoint for IP verification. Test it by visiting:
https://your_domain.com/?rest_route=/lscwp/ip-check

Expected Result:

{
  "remote_ip": "79.xxx.xxx.183",
  "x_forwarded_for": "79.xxx.xxx.183, 176.xxx.xxx.157",
  "proxy_remote_addr": "176.xxx.xxx.157"
}

• remote_ip should match your actual IP (verify at whatsmyip.org)
• This confirms PHP detects the correct client IP

Problem Scenario:

{
  "remote_ip": "176.xxx.xxx.157",
  "x_forwarded_for": "79.xxx.xxx.183, 176.xxx.xxx.157",
  "proxy_remote_addr": "176.xxx.xxx.157"
}

If remote_ip doesn’t match your actual IP, your server isn’t properly forwarding client IPs. This typically occurs when using:

• CloudFlare
• CDN services
• Reverse proxies

Solution: Contact your hosting provider to properly configure the client IP detection:

• For LSWS/OLS: Enable “Use client IP in header” in webadmin console
• For Apache: Install and configure mod_remoteIP
• Other web servers: Implement corresponding client IP detection solution

Step 2: Check REST API Accessibility

If you receive 401, 403, or 404 errors:

• Your WP REST API may be disabled
• Common causes: Security plugins or optimization plugins
• Action: Re-enable WP REST API (required for plugin functionality)

Step 3: Advanced Troubleshooting

If steps 1 and 2 all check out

3.1 Submit Report

1. Go to LiteSpeed Cache → Toolbox → Report
2. Click “Send to LiteSpeed”
3. Share the 8-character report number (e.g., “ABCDEFGH”) when you create topic

3.2 Enable Debug Logging

1. Navigate to LiteSpeed Cache → Toolbox → Debug Settings
2. Configure:
   • Debug Log: ON
   • Debug Level: Advanced
   • Debug Include URI: rest_route=/litespeed
3. Clear existing logs (Toolbox → Log View)
4. Our team will send test requests
5. Share logs via Ubuntu Pastebin or similar service

If you have enabled debug log , please also mention it when you create topic

This should help us efficiently diagnose and resolve your WPAPI issues.

• This topic was modified 1 month, 1 week ago by qtwrk.
• This topic was modified 1 month, 1 week ago by qtwrk.