http

HTTP request structure

Method Request-URI HTTP-Version
Header-field: Header-value

Request-Body

HTTP status codes

Python IANA data in http.HTTPStatus

IANA-registered status codes available in http.HTTPStatus

MDN Web Docs + RFC 9110

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status

The status codes listed below are defined by RFC 9110 Note: If you receive a response that is not in this list, it is a non-standard response, possibly custom to the server’s software.

Another source: httpstatuses.com

https://www.webfx.com/web-development/glossary/http-status-codes/

diff against http.HTTPStatus

from http import HTTPStatus
hs1 = dict()
hs1.update((i, '{} {}'.format(i, HTTPStatus(i).phrase)) for i in map(int, HTTPStatus))

# Hardcoded httpstatuses.com data, as of ~2022
hs2 = dict()
hs2.update((i, '{} {}'.format(i, v)) for (i, v) in {
    # 1×× Informational
    100: "Continue", 101: "Switching Protocols", 102: "Processing",
    # 2×× Success
    200: "OK", 201: "Created", 202: "Accepted", 203: "Non-authoritative Information", 204: "No Content", 205: "Reset Content", 206: "Partial Content", 207: "Multi-Status", 208: "Already Reported", 226: "IM Used",
    # 3×× Redirection
    300: "Multiple Choices", 301: "Moved Permanently", 302: "Found", 303: "See Other", 304: "Not Modified", 305: "Use Proxy", 307: "Temporary Redirect", 308: "Permanent Redirect",
    # 4×× Client Error
    400: "Bad Request", 401: "Unauthorized", 402: "Payment Required", 403: "Forbidden", 404: "Not Found", 405: "Method Not Allowed", 406: "Not Acceptable", 407: "Proxy Authentication Required", 408: "Request Timeout", 409: "Conflict", 410: "Gone", 411: "Length Required", 412: "Precondition Failed", 413: "Payload Too Large", 414: "Request-URI Too Long", 415: "Unsupported Media Type", 416: "Requested Range Not Satisfiable", 417: "Expectation Failed", 418: "I'm a teapot", 421: "Misdirected Request", 422: "Unprocessable Entity", 423: "Locked", 424: "Failed Dependency", 426: "Upgrade Required", 428: "Precondition Required", 429: "Too Many Requests", 431: "Request Header Fields Too Large", 444: "Connection Closed Without Response", 451: "Unavailable For Legal Reasons", 499: "Client Closed Request",
    # 5×× Server Error
    500: "Internal Server Error", 501: "Not Implemented", 502: "Bad Gateway", 503: "Service Unavailable", 504: "Gateway Timeout", 505: "HTTP Version Not Supported", 506: "Variant Also Negotiates", 507: "Insufficient Storage", 508: "Loop Detected", 510: "Not Extended", 511: "Network Authentication Required", 599: "Network Connect Timeout Error",
}.items())

for k in sorted(set(hs1) | set(hs2)):
    if (a:=hs1.get(k, '--')) != (b:=hs2.get(k, '--')):
        print(f'{a:40} {b}')
http.HTTPStatus data httpstatuses.com data
103 Early Hints –
203 Non-Authoritative Information 203 Non-authoritative Information
413 Request Entity Too Large 413 Payload Too Large
418 I’m a Teapot 418 I’m a teapot
425 Too Early –
– 444 Connection Closed Without Response
– 499 Client Closed Request
– 599 Network Connect Timeout Error