HTTP 102 Processing vs 521 Web Server Is Down
HTTP 102 (Processing) is a 1xx Informational response, while 521 (Web Server Is Down) is a 5xx Server Error response. 102 indicates that the server has received and is processing the request, but no response is available yet. Prevents the client from timing out. In contrast, 521 means that cloudflare-specific. The origin server refused the connection.
Mô tả
The server has received and is processing the request, but no response is available yet. Prevents the client from timing out.
Khi bạn thấy mã này
During long-running WebDAV operations.
Cách khắc phục
Wait for the final response. This is an interim status to prevent timeouts.
Mô tả
Cloudflare-specific. The origin server refused the connection.
Khi bạn thấy mã này
When Cloudflare can't establish a TCP connection to the origin server.
Cách khắc phục
Check that the origin server is running and the firewall allows Cloudflare IPs.
Sự khác biệt chính
102 is a 1xx Informational response, while 521 is a 5xx Server Error response.
HTTP 102: The server has received and is processing the request, but no response is available yet. Prevents the client from timing out.
HTTP 521: Cloudflare-specific. The origin server refused the connection.
You encounter 102 when during long-running WebDAV operations.
You encounter 521 when when Cloudflare can't establish a TCP connection to the origin server.
Khi nào dùng cái nào
For 102 (Processing): Wait for the final response. This is an interim status to prevent timeouts. For 521 (Web Server Is Down): Check that the origin server is running and the firewall allows Cloudflare IPs.