HTTP 204 No Content vs 520 Web Server Returned an Unknown Error
HTTP 204 (No Content) is a 2xx Success response, while 520 (Web Server Returned an Unknown Error) is a 5xx Server Error response. 204 indicates that the server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body. In contrast, 520 means that cloudflare-specific. The origin server returned an unexpected response that Cloudflare could not process.
الوصف
The server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body.
متى تراه
After DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
كيفية الإصلاح
No fix needed. The action was successful; there is simply no content to return.
الوصف
Cloudflare-specific. The origin server returned an unexpected response that Cloudflare could not process.
متى تراه
When Cloudflare receives an empty, unknown, or malformed response from the origin.
كيفية الإصلاح
Check origin server logs. Ensure responses include proper headers. Verify SSL configuration.
الفروق الرئيسية
204 is a 2xx Success response, while 520 is a 5xx Server Error response.
HTTP 204: The server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body.
HTTP 520: Cloudflare-specific. The origin server returned an unexpected response that Cloudflare could not process.
You encounter 204 when after DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
You encounter 520 when when Cloudflare receives an empty, unknown, or malformed response from the origin.
متى تستخدم أيًا منهما
For 204 (No Content): No fix needed. The action was successful; there is simply no content to return. For 520 (Web Server Returned an Unknown Error): Check origin server logs. Ensure responses include proper headers. Verify SSL configuration.