522 Connection Timed Out

522

Connection Timed Out

Example HTTP Response

HTTP Response

HTTP/1.1 522 Connection Timed Out
Server: cloudflare
Content-Type: text/html

<html><body>Connection timed out</body></html>

Common Causes

Origin server overloaded and slow to respond
Database queries taking too long
Long-running scripts exceeding timeout
Resource exhaustion (CPU, memory, disk I/O)
Inefficient code or infinite loops
Origin server's keep-alive timeout too short

Technical Details

What does this mean?

Your server is playing the silent game! Cloudflare connected successfully but your origin just... sits there. It's like calling someone who picks up the phone then says absolutely nothing.

Technical Definition

Cloudflare established a TCP connection but the origin did not reply with an HTTP response before the connection timed out.

Code Snippets

Ready-to-use code for returning this HTTP status in your application:

Node.js

// Express.js
app.get('/example', (req, res) => {
  res.status(522).json({
    error: 'Connection Timed Out',
    message: 'Your error message here'
  });
});

// Native HTTP
const http = require('http');

http.createServer((req, res) => {
  res.writeHead(522, { 'Content-Type': 'application/json' });
  res.end(JSON.stringify({
    error: 'Connection Timed Out',
    message: 'Your error message here'
  }));
}).listen(3000);

Related Status Codes

⌛504Gateway Timeout ⏰408Request Timeout

522 Connection Timed Out FAQ

What causes a 522 Connection Timed Out error?

Origin server overloaded and slow to respond. Database queries taking too long. Long-running scripts exceeding timeout. Resource exhaustion (CPU, memory, disk I/O). Inefficient code or infinite loops. Origin server's keep-alive timeout too short.

// Express.js app.get('/example', (req, res) => { res.status(522).json({ error: 'Connection Timed Out', message: 'Your error message here' }); }); // Native HTTP const http = require('http'); http.createServer((req, res) => { res.writeHead(522, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ error: 'Connection Timed Out', message: 'Your error message here' })); }).listen(3000);