summaryrefslogtreecommitdiffstats
path: root/Doc/library/http.rst
blob: 0e3441cbcb718ccaf570e4da02bcb108c1d54b7e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
:mod:`http` --- HTTP modules
============================

.. module:: http
   :synopsis: HTTP status codes and messages

**Source code:** :source:`Lib/http/__init__.py`

.. index::
   pair: HTTP; protocol
   single: HTTP; http (standard module)

--------------

:mod:`http` is a package that collects several modules for working with the
HyperText Transfer Protocol:

* :mod:`http.client` is a low-level HTTP protocol client; for high-level URL
  opening use :mod:`urllib.request`
* :mod:`http.server` contains basic HTTP server classes based on :mod:`socketserver`
* :mod:`http.cookies` has utilities for implementing state management with cookies
* :mod:`http.cookiejar` provides persistence of cookies

:mod:`http` is also a module that defines a number of HTTP status codes and
associated messages through the :class:`http.HTTPStatus` enum:

.. class:: HTTPStatus

   .. versionadded:: 3.5

   A subclass of :class:`enum.IntEnum` that defines a set of HTTP status codes,
   reason phrases and long descriptions written in English.

   Usage::

      >>> from http import HTTPStatus
      >>> HTTPStatus.OK
      <HTTPStatus.OK: 200>
      >>> HTTPStatus.OK == 200
      True
      >>> HTTPStatus.OK.value
      200
      >>> HTTPStatus.OK.phrase
      'OK'
      >>> HTTPStatus.OK.description
      'Request fulfilled, document follows'
      >>> list(HTTPStatus)
      [<HTTPStatus.CONTINUE: 100>, <HTTPStatus.SWITCHING_PROTOCOLS: 101>, ...]

.. _http-status-codes:

HTTP status codes
-----------------

Supported,
`IANA-registered <https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml>`_
status codes available in :class:`http.HTTPStatus` are:

======= =================================== ==================================================================
Code    Enum Name                           Details
======= =================================== ==================================================================
``100`` ``CONTINUE``                        HTTP/1.1 :rfc:`7231`, Section 6.2.1
``101`` ``SWITCHING_PROTOCOLS``             HTTP/1.1 :rfc:`7231`, Section 6.2.2
``102`` ``PROCESSING``                      WebDAV :rfc:`2518`, Section 10.1
``200`` ``OK``                              HTTP/1.1 :rfc:`7231`, Section 6.3.1
``201`` ``CREATED``                         HTTP/1.1 :rfc:`7231`, Section 6.3.2
``202`` ``ACCEPTED``                        HTTP/1.1 :rfc:`7231`, Section 6.3.3
``203`` ``NON_AUTHORITATIVE_INFORMATION``   HTTP/1.1 :rfc:`7231`, Section 6.3.4
``204`` ``NO_CONTENT``                      HTTP/1.1 :rfc:`7231`, Section 6.3.5
``205`` ``RESET_CONTENT``                   HTTP/1.1 :rfc:`7231`, Section 6.3.6
``206`` ``PARTIAL_CONTENT``                 HTTP/1.1 :rfc:`7233`, Section 4.1
``207`` ``MULTI_STATUS``                    WebDAV :rfc:`4918`, Section 11.1
``208`` ``ALREADY_REPORTED``                WebDAV Binding Extensions :rfc:`5842`, Section 7.1 (Experimental)
``226`` ``IM_USED``                         Delta Encoding in HTTP :rfc:`3229`, Section 10.4.1
``300`` ``MULTIPLE_CHOICES``                HTTP/1.1 :rfc:`7231`, Section 6.4.1
``301`` ``MOVED_PERMANENTLY``               HTTP/1.1 :rfc:`7231`, Section 6.4.2
``302`` ``FOUND``                           HTTP/1.1 :rfc:`7231`, Section 6.4.3
``303`` ``SEE_OTHER``                       HTTP/1.1 :rfc:`7231`, Section 6.4.4
``304`` ``NOT_MODIFIED``                    HTTP/1.1 :rfc:`7232`, Section 4.1
``305`` ``USE_PROXY``                       HTTP/1.1 :rfc:`7231`, Section 6.4.5
``307`` ``TEMPORARY_REDIRECT``              HTTP/1.1 :rfc:`7231`, Section 6.4.7
``308`` ``PERMANENT_REDIRECT``              Permanent Redirect :rfc:`7238`, Section 3 (Experimental)
``400`` ``BAD_REQUEST``                     HTTP/1.1 :rfc:`7231`, Section 6.5.1
``401`` ``UNAUTHORIZED``                    HTTP/1.1 Authentication :rfc:`7235`, Section 3.1
``402`` ``PAYMENT_REQUIRED``                HTTP/1.1 :rfc:`7231`, Section 6.5.2
``403`` ``FORBIDDEN``                       HTTP/1.1 :rfc:`7231`, Section 6.5.3
``404`` ``NOT_FOUND``                       HTTP/1.1 :rfc:`7231`, Section 6.5.4
``405`` ``METHOD_NOT_ALLOWED``              HTTP/1.1 :rfc:`7231`, Section 6.5.5
``406`` ``NOT_ACCEPTABLE``                  HTTP/1.1 :rfc:`7231`, Section 6.5.6
``407`` ``PROXY_AUTHENTICATION_REQUIRED``   HTTP/1.1 Authentication :rfc:`7235`, Section 3.2
``408`` ``REQUEST_TIMEOUT``                 HTTP/1.1 :rfc:`7231`, Section 6.5.7
``409`` ``CONFLICT``                        HTTP/1.1 :rfc:`7231`, Section 6.5.8
``410`` ``GONE``                            HTTP/1.1 :rfc:`7231`, Section 6.5.9
``411`` ``LENGTH_REQUIRED``                 HTTP/1.1 :rfc:`7231`, Section 6.5.10
``412`` ``PRECONDITION_FAILED``             HTTP/1.1 :rfc:`7232`, Section 4.2
``413`` ``REQUEST_ENTITY_TOO_LARGE``        HTTP/1.1 :rfc:`7231`, Section 6.5.11
``414`` ``REQUEST_URI_TOO_LONG``            HTTP/1.1 :rfc:`7231`, Section 6.5.12
``415`` ``UNSUPPORTED_MEDIA_TYPE``          HTTP/1.1 :rfc:`7231`, Section 6.5.13
``416`` ``REQUESTED_RANGE_NOT_SATISFIABLE`` HTTP/1.1 Range Requests :rfc:`7233`, Section 4.4
``417`` ``EXPECTATION_FAILED``              HTTP/1.1 :rfc:`7231`, Section 6.5.14
``421`` ``MISDIRECTED_REQUEST``             HTTP/2 :rfc:`7540`, Section 9.1.2
``422`` ``UNPROCESSABLE_ENTITY``            WebDAV :rfc:`4918`, Section 11.2
``423`` ``LOCKED``                          WebDAV :rfc:`4918`, Section 11.3
``424`` ``FAILED_DEPENDENCY``               WebDAV :rfc:`4918`, Section 11.4
``426`` ``UPGRADE_REQUIRED``                HTTP/1.1 :rfc:`7231`, Section 6.5.15
``428`` ``PRECONDITION_REQUIRED``           Additional HTTP Status Codes :rfc:`6585`
``429`` ``TOO_MANY_REQUESTS``               Additional HTTP Status Codes :rfc:`6585`
``431`` ``REQUEST_HEADER_FIELDS_TOO_LARGE`` Additional HTTP Status Codes :rfc:`6585`
``451`` ``UNAVAILABLE_FOR_LEGAL_REASONS``   An HTTP Status Code to Report Legal Obstacles :rfc:`7725`
``500`` ``INTERNAL_SERVER_ERROR``           HTTP/1.1 :rfc:`7231`, Section 6.6.1
``501`` ``NOT_IMPLEMENTED``                 HTTP/1.1 :rfc:`7231`, Section 6.6.2
``502`` ``BAD_GATEWAY``                     HTTP/1.1 :rfc:`7231`, Section 6.6.3
``503`` ``SERVICE_UNAVAILABLE``             HTTP/1.1 :rfc:`7231`, Section 6.6.4
``504`` ``GATEWAY_TIMEOUT``                 HTTP/1.1 :rfc:`7231`, Section 6.6.5
``505`` ``HTTP_VERSION_NOT_SUPPORTED``      HTTP/1.1 :rfc:`7231`, Section 6.6.6
``506`` ``VARIANT_ALSO_NEGOTIATES``         Transparent Content Negotiation in HTTP :rfc:`2295`, Section 8.1 (Experimental)
``507`` ``INSUFFICIENT_STORAGE``            WebDAV :rfc:`4918`, Section 11.5
``508`` ``LOOP_DETECTED``                   WebDAV Binding Extensions :rfc:`5842`, Section 7.2 (Experimental)
``510`` ``NOT_EXTENDED``                    An HTTP Extension Framework :rfc:`2774`, Section 7 (Experimental)
``511`` ``NETWORK_AUTHENTICATION_REQUIRED`` Additional HTTP Status Codes :rfc:`6585`, Section 6
======= =================================== ==================================================================

In order to preserve backwards compatibility, enum values are also present
in the :mod:`http.client` module in the form of constants. The enum name is
equal to the constant name (i.e. ``http.HTTPStatus.OK`` is also available as
``http.client.OK``).

.. versionchanged:: 3.7
   Added ``421 MISDIRECTED_REQUEST`` status code.

.. versionadded:: 3.8
   Added ``451 UNAVAILABLE_FOR_LEGAL_REASONS`` status code.