100
Client should continue with request
101
Server is switching protocols
200
standard response for successful HTTP requests
201
request has been fulfilled
202
request accepted, processing pending
203
request processed, information may be from another source
204
request processed, no content returned
205
request processed, no content returned, reset document view
206
partial resource return due to request header
300
multiple options for the resource delivered
301
this and all future requests directed to the given URI
302
temporary response to request found via alternative URI
303
permanent response to request found via alternative URI
304
resource has not been modified since last requested
305
content located elsewhere, retrieve from there
306
subsequent requests should use the specified proxy
307
connect again to different URI as provided
400
request cannot be fulfilled due to bad syntax
401
authentication is possible but has failed
402
payment required, reserved for future use
403
server refuses to respond to request
404
requested resource could not be found
405
request method not supported by that resource
406
content not acceptable according to the Accept headers
407
client must first authenticate itself with the proxy
408
server timed out waiting for the request
409
request could not be processed because of conflict
410
resource is no longer available and will not be available again
411
request did not specify the length of its content
412
server does not meet request preconditions
413
request is larger than the server is willing or able to process
414
URI provided was too long for the server to process
415
server does not support media type
416
client has asked for unprovidable portion of the file
417
server cannot meet requirements of Expect request-header field
500
generic error message
501
server does not recognise method or lacks ability to fulfill
502
server received an invalid response from upstream server
503
server is currently unavailable
504
gateway did not receive response from upstream server
505
server does not support the HTTP protocol version