HTTP Error codes

1xx: Informational
- 100: Continue
- 101: Switching protocols
- 102: Processing
- 103: Checkpoint
2xx: Success
- 200: Ok
- 201: Created
- 202: Accepted
- 203: Non-Authoritative Information
- 204: No content
- 205: Reset content
- 206: Partial content
- 207: Multistatus
- 208: Already reported
3xx: Redirection
- 301: Moved permanently
- 302: Found
- 303: See other
- 304: Not modified
- 305: Use proxy
- 306: Switch proxy
- 307: Temporary redirect
- 308: Permament redirect
4xx: Client Error
- 400: Bad request
- 401: Unauthorized
- 402: Payment required
- 403: Forbidden
- 404: Not found
5xx: Server Error
- 500: Internal server error
- 501: Not implemented
- 502: Bad gateway
- 503: Service unavailable
- 504: Gateway timeout