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.
คำอธิบาย
The server has received and is processing the request, but no response is available yet. Prevents the client from timing out.
เมื่อคุณพบเห็น
During long-running WebDAV operations.
วิธีแก้ไข
Wait for the final response. This is an interim status to prevent timeouts.
คำอธิบาย
Cloudflare-specific. The origin server refused the connection.
เมื่อคุณพบเห็น
When Cloudflare can't establish a TCP connection to the origin server.
วิธีแก้ไข
Check that the origin server is running and the firewall allows Cloudflare IPs.
ความแตกต่างหลัก
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.
ควรใช้อันไหนเมื่อไร
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.