Client Error
· 400 - Bad Request
a status code of 400 indicates that the server did not understand the request due to bad syntax.
a status code of 400 indicates that the server did not understand the request due to bad syntax.
· 401 - Unauthorized
A 401 status code indicates that before a resource can be accessed, the client must be authorized by the server.
A 401 status code indicates that before a resource can be accessed, the client must be authorized by the server.
· 402 - Payment Required
The 402 status code is not currently in use, being listed as "reserved for future use".
The 402 status code is not currently in use, being listed as "reserved for future use".
· 403 - Forbidden
A 403 status code indicates that the client cannot access the requested resource. That might mean that the wrong username and password were sent in the request, or that the permissions on the server do not allow what was being asked.
A 403 status code indicates that the client cannot access the requested resource. That might mean that the wrong username and password were sent in the request, or that the permissions on the server do not allow what was being asked.
· 404 - Not found
the best known of them all, the 404 status code indicates that the requested resource was not found at the URL given, and the server has no idea how long for.
the best known of them all, the 404 status code indicates that the requested resource was not found at the URL given, and the server has no idea how long for.
· 405 - Method Not Allowed
A 405 status code is returned when the client has tried to use a request method that the server does not allow. Request methods that are allowed should be sent with the response (common request methods are POST and GET).
A 405 status code is returned when the client has tried to use a request method that the server does not allow. Request methods that are allowed should be sent with the response (common request methods are POST and GET).
· 406 - Not Acceptable
The 406 status code means that, although the server understood and processed the request, the response is of a form the client cannot understand. A client sends, as part of a request, headers indicating what types of data it can use, and a 406 error is returned when the response is of a type not i that list.
The 406 status code means that, although the server understood and processed the request, the response is of a form the client cannot understand. A client sends, as part of a request, headers indicating what types of data it can use, and a 406 error is returned when the response is of a type not i that list.
· 407 - Proxy Authentication Required
The 407 status code is very similar to the 401 status code, and means that the client must be authorized by the proxy before the request can proceed.
The 407 status code is very similar to the 401 status code, and means that the client must be authorized by the proxy before the request can proceed.
· 408 - Request Timeout
A 408 status code means that the client did not produce a request quickly enough. A server is set to only wait a certain amount of time for responses from clients, and a 408 status code indicates that time has passed.
A 408 status code means that the client did not produce a request quickly enough. A server is set to only wait a certain amount of time for responses from clients, and a 408 status code indicates that time has passed.
· 409 - Conflict
a 409 status code indicates that the server was unable to complete the request, often because a file would need to be edited, created or deleted, and that file cannot be edited, created or deleted.
a 409 status code indicates that the server was unable to complete the request, often because a file would need to be edited, created or deleted, and that file cannot be edited, created or deleted.
· 410 - Gone
a 410 status code is the 404's lesser known cousin. It indicates that a resource has permanently gone (a 404 status code gives no indication if a resource has give permanently or temporarily), and no new address is known for it.
a 410 status code is the 404's lesser known cousin. It indicates that a resource has permanently gone (a 404 status code gives no indication if a resource has give permanently or temporarily), and no new address is known for it.
· 411 - Length Required
The 411 status code occurs when a server refuses to process a request because a content length was not specified.
The 411 status code occurs when a server refuses to process a request because a content length was not specified.
· 412 - Precondition Failed
A 412 status code indicates that one of the conditions the request was made under has failed.
A 412 status code indicates that one of the conditions the request was made under has failed.
· 413 - Request Entity Too Large
The 413 status code indicates that the request was larger than the server is able to handle, either due to physical constraints or to settings. Usually, this occurs when a file is sent using the POST method from a form, and the file is larger than the maximum size allowed in the server settings.
The 413 status code indicates that the request was larger than the server is able to handle, either due to physical constraints or to settings. Usually, this occurs when a file is sent using the POST method from a form, and the file is larger than the maximum size allowed in the server settings.
· 414 - Request-URI Too Long
The 414 status code indicates the URL requested by the client was longer than it can process.
The 414 status code indicates the URL requested by the client was longer than it can process.
· 415 - Unsupported Media Type
A 415 status code is returned by a server to indicate that part of the request was in an unsupported format.
A 415 status code is returned by a server to indicate that part of the request was in an unsupported format.
· 416 - Requested Range Not Satisfied
A 416 status code indicates that the server was unable to fulfill the request. This may be, for example, because the client asked for the 800th-900th bytes of a document, but the document was only 200 bytes long.
A 416 status code indicates that the server was unable to fulfill the request. This may be, for example, because the client asked for the 800th-900th bytes of a document, but the document was only 200 bytes long.
· 417 - Expectation failed
The 417 status code means that the server was unable to properly complete the request. One of the headers sent to the server, the "Expect" header, indicated an expectation the server could not meet.
The 417 status code means that the server was unable to properly complete the request. One of the headers sent to the server, the "Expect" header, indicated an expectation the server could not meet.
Server Error
· 500 - Internal Server Error
A 500 status code (all too often seen by Perl programmers) indicates that the server encountered something it didn't expect and was unable to complete the request.
A 500 status code (all too often seen by Perl programmers) indicates that the server encountered something it didn't expect and was unable to complete the request.
· 501 - Not Implemented
The 501 status code indicates that the server does not support all that is needed for the request to be completed.
The 501 status code indicates that the server does not support all that is needed for the request to be completed.
· 502 - Bad Gateway
A 502 status code indicates that a server, while acting as a proxy, received a response from a server further upstream that it judged invalid.
A 502 status code indicates that a server, while acting as a proxy, received a response from a server further upstream that it judged invalid.
· 503 - Service Unavailable
A 503 status code is most often seen on extremely busy servers, and it indicates that the server was unable to complete the request due to a server overload.
A 503 status code is most often seen on extremely busy servers, and it indicates that the server was unable to complete the request due to a server overload.
· 504 - Gateway Timeout
A 504 status code is returned when a server acting as a proxy has waited too long for a response from a server further upstream.
A 504 status code is returned when a server acting as a proxy has waited too long for a response from a server further upstream.
· 505 - HTTP Version Not Supported
A 505 status code is returned when the HTTP version indicated in the request is no supported. The response should indicate which HTTP versions are supported.
A 505 status code is returned when the HTTP version indicated in the request is no supported. The response should indicate which HTTP versions are supported.
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