Http status code 416 vs 428, 503 vs 505
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This document analyzes various HTTP status codes related to client and server errors, specifically codes 416 (Range Not Satisfiable), 428 (Precondition Required), 503 (Service Unavailable), and 505 (HTTP Version Not Supported). It details the meanings of each status code, common causes, and suggested fixes for resolving the associated errors. Overall, the document serves as a reference for understanding and troubleshooting these specific HTTP response codes.
Http status code 416 vs 428, 503 vs 505
- 1. HTTP Status Code Analysis of Status Code of Client error response 416 vs 428 and Server error response 503 vs 505
- 2. HTTP Status Codes 416: Range Not Satisfied 428: Precondition Required 503: Service Unavailable 505: HTTP Version Not Supported
- 3. 416: Range Not Satisfied Range Not Satisfiable error response code indicates that a server cannot serve the requested ranges. The most likely reason is that the document doesn't contain such ranges, or that the Range header value, though syntactically correct, doesn't make sense.
- 4. •428: Precondition Required Precondition Required response status code indicates that the server requires the request to be conditional. Typically, this means that a required precondition header, such as If-Match, is missing. When a precondition header is not matching the server side state, the response should be 412 Precondition Failed.
- 5. 503: Service Unavailable Service Unavailable server error response code indicates that the server is not ready to handle the request. Common causes are a server that is down for maintenance or that is overloaded. This response should be used for temporary conditions and the Retry-After HTTP header should, if possible, contain the estimated time for the recovery of the service.
- 6. 503: Service Unavailable Why this occurs: Service is unavailable for maintenance To many request so that server cannot work properly The servers content move permanently
- 7. 503: Service Unavailable How to fix error: Refresh the page See if the page is down for other people Restart your router. Restart the server. Check the server logs. Check if there's ongoing automated maintenance. Check your server's firewall settings. Check the code
- 8. 505: HTTP Version Not Supported HTTP Version Not Supported response status code indicates that the HTTP version used in the request is not supported by the server.
- 9. 505: HTTP Version Not Supported How to fix error: Try to upgrade HTTP version Reinstall browser Switch to modern browser