HTTP 203 Non-Authoritative Information vs 522 Connection Timed Out
HTTP 203 (Non-Authoritative Information) is a 2xx Success response, while 522 (Connection Timed Out) is a 5xx Server Error response. 203 indicates that the response payload has been modified by a transforming proxy from the origin server's 200 response. In contrast, 522 means that cloudflare-specific. TCP connection to the origin server timed out.
Description
The response payload has been modified by a transforming proxy from the origin server's 200 response.
When You See It
When a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
How to Fix
Check if a proxy is modifying the response. Access the origin directly if you need the original content.
Description
Cloudflare-specific. TCP connection to the origin server timed out.
When You See It
When the origin server is overloaded or network issues prevent connection.
How to Fix
Check origin server health. Verify firewall rules. Check for network congestion.
Key Differences
203 is a 2xx Success response, while 522 is a 5xx Server Error response.
HTTP 203: The response payload has been modified by a transforming proxy from the origin server's 200 response.
HTTP 522: Cloudflare-specific. TCP connection to the origin server timed out.
You encounter 203 when when a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
You encounter 522 when when the origin server is overloaded or network issues prevent connection.
When to Use Which
For 203 (Non-Authoritative Information): Check if a proxy is modifying the response. Access the origin directly if you need the original content. For 522 (Connection Timed Out): Check origin server health. Verify firewall rules. Check for network congestion.