When a browser requests a service from a web server, an error might occur.
This is a list of HTTP status messages that might be returned:
|100 Continue||The server has received the request headers, and the client should proceed to send the request body|
|101 Switching Protocols||The requester has asked the server to switch protocols|
|103 Checkpoint||Used in the resumable requests proposal to resume aborted PUT or POST requests|
|200 OK||The request is OK (this is the standard response for successful HTTP requests)|
|201 Created||The request has been fulfilled, and a new resource is created|
|202 Accepted||The request has been accepted for processing, but the processing has not been completed|
|203 Non-Authoritative Information||The request has been successfully processed, but is returning information that may be from another source|
|204 No Content||The request has been successfully processed, but is not returning any content|
|205 Reset Content||The request has been successfully processed, but is not returning any content, and requires that the requester reset the document view|
|206 Partial Content||The server is delivering only part of the resource due to a range header sent by the client|
|300 Multiple Choices||A link list. The user can select a link and go to that location. Maximum five addresses|
|301 Moved Permanently||The requested page has moved to a new URL|
|302 Found||The requested page has moved temporarily to a new URL|
|303 See Other||The requested page can be found under a different URL|
|304 Not Modified||Indicates the requested page has not been modified since last requested|
|306 Switch Proxy||No longer used|
|307 Temporary Redirect||The requested page has moved temporarily to a new URL|
|308 Resume Incomplete||Used in the resumable requests proposal to resume aborted PUT or POST requests|
|400 Bad Request||The request cannot be fulfilled due to bad syntax|
|401 Unauthorized||The request was a legal request, but the server is refusing to respond to it. For use when authentication is possible but has failed or not yet been provided|
|402 Payment Required||Reserved for future use|
|403 Forbidden||The request was a legal request, but the server is refusing to respond to it|
|404 Not Found||The requested page could not be found but may be available again in the future|
|405 Method Not Allowed||A request was made of a page using a request method not supported by that page|
|406 Not Acceptable||The server can only generate a response that is not accepted by the client|
|407 Proxy Authentication Required||The client must first authenticate itself with the proxy|
|408 Request Timeout||The server timed out waiting for the request|
|409 Conflict||The request could not be completed because of a conflict in the request|
|410 Gone||The requested page is no longer available|
|411 Length Required||The "Content-Length" is not defined. The server will not accept the request without it|
|412 Precondition Failed||The precondition given in the request evaluated to false by the server|
|413 Request Entity Too Large||The server will not accept the request, because the request entity is too large|
|414 Request-URI Too Long||The server will not accept the request, because the URL is too long. Occurs when you convert a POST request to a GET request with a long query information|
|415 Unsupported Media Type||The server will not accept the request, because the media type is not supported|
|416 Requested Range Not Satisfiable||The client has asked for a portion of the file, but the server cannot supply that portion|
|417 Expectation Failed||The server cannot meet the requirements of the Expect request-header field|
|500 Internal Server Error||A generic error message, given when no more specific message is suitable|
|501 Not Implemented||The server either does not recognize the request method, or it lacks the ability to fulfill the request|
|502 Bad Gateway||The server was acting as a gateway or proxy and received an invalid response from the upstream server|
|503 Service Unavailable||The server is currently unavailable (overloaded or down)|
|504 Gateway Timeout||The server was acting as a gateway or proxy and did not receive a timely response from the upstream server|
|505 HTTP Version Not Supported||The server does not support the HTTP protocol version used in the request|
|511 Network Authentication Required||The client needs to authenticate to gain network access|
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