HTTP Status

HTTP 100 Informational

100    Continue
101    Switching Protocol
102    Processing

HTTP 200 Successful

200    OK
201    Created
202    Accepted
203    Non-Authoriative Info
204    No Content
205    Reset COntent
206    Partial Content
207    Multistatus
208    Already reported

HTTP 300 Redirect

300    Multiple Choices
301    Moved Permanently
302    Moved Temporarily
303    See Other
304    Not modified
305    Use Proxy
307    Temporary Redirect

HTTP 400 Client Error

400    Bad Request
401    Unauthorised
402    Payment Required
403    Forbidden
404    File not found
405    Method not allowed
406    Not acceptable
407    Proxy authentication
408    Request Timeout
409    Conflict
410    Gone
411    Length Required
412    Precondition Failed

HTTP 500 Server Error

500    Internal Server Error
501    Method not implemented
502    Bad Gateway
503    Service Unavailable
504    Gateway Timeout
505    HTTP Version not supported