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:
1xx: Information
Message: |
Description: |
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 |
2xx: Successful
Message: |
Description: |
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 |
3xx: Redirection
Message: |
Description: |
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 |
4xx: Client Error
Message: |
Description: |
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 |
5xx: Server Error
Message: |
Description: |
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 |