Successful responses The request has succeeded. Thus, any request method that only requires the server to response with a read-only operation would be safe. That is, the client must authenticate itself to get the requested response. This error can be a malformed request syntax, deceptive request routing, invalid request message framing, or size that is too large. In such case, there is no need to retransmit the resource since the client still has a previously-downloaded copy.
By default this file is named nginx. You could use the system restore to restore your software to an earlier date before the time when this error arose. In order for the error code 304 to be returned it needs to be allowed by the web browser that you are using. This should be used when a resource has been intentionally removed and the resource should be purged. This response is cacheable unless indicated otherwise. The below status codes are defined by. Clients will need to update to a supported version.
The body may be preceded by the following additional fields. It is intended for cases where another process or server handles the request, or for batch processing. See section for detailed discussion of the use and handling of this status code. For more information, see Response Status Codes in , , , , and. Intended for use by intercepting proxies used to control access to the network e. Forbidden 403 The request is for something forbidden.
This response is only cacheable if indicated by a Cache-Control or Expires header field. Client error responses This response means that server could not understand the request due to invalid syntax. Given below is a list of all the status codes. The status codes 303 and 307 have been added for servers that wish to make unambiguously clear which kind of reaction is expected of the client. To have a server check the request's headers, a client must send Expect: 100-continue as a header in its initial request and receive a 100 Continue status code in response before sending the body.
For example, the client uploads an image as , but the server requires that images use a different format. In this case, you might want to try. One example of this could be used to prevent multiple video format options by listing the files with different filename extensions. If your application is generating unexpected 304 Not Modified response codes there are a number of steps you can take to diagnose the problem. Many of these status codes are used in.
It is important, though, that the user agent detects and intervenes in order to prevent cyclical redirects. This response code allows the client to place preconditions on the current resource metainformation header field data and thus prevent the requested method from being applied to a resource other than the one intended. Upon receiving a 410 status code, the client should not request the resource in the future. Thus, one of the first steps you can take to determine what might be causing these 304 Not Modified response codes is to check the configuration files for your web server software for unintentional redirect instructions. The client was not authorized to access the webpage.
This code was originally intended to be used as a form of digital cash or micropayment. Category Description 1xx: Informational Communicates transfer protocol-level information. Sending a large request body to a server after a request has been rejected for inappropriate headers would be inefficient. This is an example of industry practice contradicting the standard. The requested resource could not be found but may be available in the future.
The 403 error usually states that the browser is not authorized to view the requested page. If this finally solves the problem, you should adjust your firewall settings so that this page is allowed. This may include annotation information about the object, for example. It means that your web browser was able to successfully connect to Cloudflare, but Cloudflare was not able to connect to the origin web server. The client should repeat the request adding a valid content-length header field containing the length of the message body in the request message.
For example, if the client asked for a part of the file that lies beyond the end of the file. In the past, requests resulting in a 302 response were not permitted to be changed when reissuing the primary request. For example, if you specify an invalid value for a parameter, the location will be the name of the parameter. Code 498 indicates an expired or otherwise invalid token. The actual response will depend on the request method used. Save the changed file then restart the server and test if the issue was resolved. If you trust the web page operator, you can disable the firewall and try opening the web page again.
The server refuses to perform the request using the current protocol but might be willing to do so after the client upgrades to a different protocol. A 304 Not Modified message is an indicating that the requested resource has not been modified since the previous transmission, so there is no need to retransmit the requested resource to the client. Usually this implies future availability e. Obscure, yes, but I'll run into this next year and now I'll find my answer in a google search. However, there are many additional codes that you might bump into from time to time. Intended for use with schemes.