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Apache Error Code 304

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Retrieved 2016-09-01. ^ "Introduction". In some cases, this may even be preferable to sending a 406 response. Feeds RSS (Full) RSS (Partial) More Feeds Newsletter Name Email Origin Blog Store Comment Topics PHP E-commerce Security Online Marketing Freelancing For Beginners More Latest Posts Articles Code Recommended Most Popular The new URI is not a substitute reference for the originally requested resource. More about the author

When was this language released? This response is cacheable unless indicated otherwise. Retrieved October 24, 2009. ^ "200 OK". CloudFlare[edit] CloudFlare's reverse proxy service expands the 5xx series of errors space to signal issues with the origin server.[76] 520 Unknown Error The 520 error is used as a "catch-all response

Http Error Code 500

Except when responding to a HEAD request, the server SHOULD include an entity containing an explanation of the error situation, and whether it is a temporary or permanent condition. You could probably do RequestHeader unset If-Modified-Since early or you could activate mod_include processing for the files (but that would be a waste of processor time). Retrieved 16 October 2015. ^ a b c d "Hypertext Transfer Protocol (HTTP) Status Code Registry". RFC 2616.

And if uses forces refresh, they will be re-fetched anyway. > and there isn't a way to tell the browser to use cache's > information again, unless you modify files at The next time the document is viewed, the client asks the server if the document has changed. User agents SHOULD display any included entity to the user. Response Code 401 Meaning https://tools.ietf.org/html/rfc2774.

I would therefore guess that your problem would be eliminated if you dropped this parameter. Html Error Codes List April 2015. For example, the client uploads an image as image/svg+xml, but the server requires that images use a different format. 416 Range Not Satisfiable (RFC 7233) The client has asked for a If the action cannot be carried out immediately, the server SHOULD respond with 202 (Accepted) response instead.

See stackoverflow.com/questions/2611264/… for more detail on the code –Greg Apr 12 '10 at 8:42 add a comment| up vote 4 down vote This is intended behavior. 400 Http If what you say is true, then it's a bug in apache, and perhaps one that will be very difficult to fix. Although must-revalidate should technically not effect the caching decision of the client in most cases, it is a widely abused parameter and it wouldn't surprise me at all if clients treat In fact, no cache-control parameters are set by default.

Html Error Codes List

Not sure if the issue is something to do with how it mimics this aspect of the request and then what happens as the result comes back? https://tools.ietf.org/html/rfc2518. Http Error Code 500 This status code is commonly used when the server does not wish to reveal exactly why the request has been refused, or when no other response is applicable. 10.4.6 405 Method Http 304 Error If a client gets a 304 Not Modified, then it's the client's responsibility to display the resouce in question from its own cache.

It set 1970 as new expiry date no matter the value in this header. my review here Sending a large request body to a server after a request has been rejected for inappropriate headers would be inefficient. Systems that cache or index Web resources (such as search engines) often use the 304 response to determine if the information they previously gathered for a particular URL is now out-of-date. Retrieved 16 October 2015. ^ Holtman, Koen; Mutz, Andrew H. (March 1998). 304 Status Code Means

We have no relationship with any of the authors or their companies. June 1999. The problem is that when a page contains many of these >> elements (.js, .gif, etc), performance get worse (pairs request-reponse >> 304 take time), and there isn't a way to click site If a cache uses a received 304 response to update a cache entry, the cache MUST update the entry to reflect any new field values given in the response. 10.3.6 305

Not observing these limitations has significant security consequences. 10.3.7 306 (Unused) The 306 status code was used in a previous version of the specification, is no longer used, and the code What Is Http Status 400 the user does not have the necessary credentials. Retrieved October 24, 2009. ^ ikitommi; Daraen. "metosin/ring-http-response".

The 202 response is intentionally non-committal.

Do you have a conflicting Expires header? Therefore, the note SHOULD contain the information necessary for a user to repeat the original request on the new URI. Requirements on a cache that receives a 304 response are defined in Section 4.3.4 of RFC7234. Http 501 Response The response 417 Expectation Failed indicates the request should not be continued.[2] 101 Switching Protocols The requester has asked the server to switch protocols and the server has agreed to do

If what you say is true, then it's a bug in apache, and > perhaps one that will be very difficult to fix. Why it Occurs The HTTP status code 304 Not Modified occurs if the client has performed a conditional GET request and access is allowed, but the document has not been modified. The response MAY include new or updated metainformation in the form of entity-headers, which if present SHOULD be associated with the requested variant. navigate to this website But this is not enough, because it seems that Firefox doesnt take into account this header if response code is 304.

This code indicates that the server has received and is processing the request, but no response is available yet.[6] This prevents the client from timing out and assuming the request was Browse other questions tagged http httpwebrequest http-status-code-304 if-modified-since or ask your own question. For further information, please read our Privacy Statement. Usually this implies future availability (e.g., a new feature of a web-service API).[citation needed] 502 Bad Gateway The server was acting as a gateway or proxy and received an invalid response