cpython/Doc/lib/libhttplib.tex
Guido van Rossum d59da4b432 Merged revisions 55407-55513 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk

................
  r55413 | fred.drake | 2007-05-17 12:30:10 -0700 (Thu, 17 May 2007) | 1 line

  fix argument name in documentation; match the implementation
................
  r55430 | jack.diederich | 2007-05-18 06:39:59 -0700 (Fri, 18 May 2007) | 1 line

  Implements class decorators, PEP 3129.
................
  r55432 | guido.van.rossum | 2007-05-18 08:09:41 -0700 (Fri, 18 May 2007) | 2 lines

  obsubmit.
................
  r55434 | guido.van.rossum | 2007-05-18 09:39:10 -0700 (Fri, 18 May 2007) | 3 lines

  Fix bug in test_inspect.  (I presume this is how it should be fixed;
  Jack Diedrich, please verify.)
................
  r55460 | brett.cannon | 2007-05-20 00:31:57 -0700 (Sun, 20 May 2007) | 4 lines

  Remove the imageop module.  With imgfile already removed in Python 3.0 and
  rgbimg gone in Python 2.6 the unit tests themselves were made worthless.  Plus
  third-party libraries perform the same function much better.
................
  r55469 | neal.norwitz | 2007-05-20 11:28:20 -0700 (Sun, 20 May 2007) | 118 lines

  Merged revisions 55324-55467 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r55348 | georg.brandl | 2007-05-15 13:19:34 -0700 (Tue, 15 May 2007) | 4 lines

    HTML-escape the plain traceback in cgitb's HTML output, to prevent
    the traceback inadvertently or maliciously closing the comment and
    injecting HTML into the error page.
  ........
    r55372 | neal.norwitz | 2007-05-15 21:33:50 -0700 (Tue, 15 May 2007) | 6 lines

    Port rev 55353 from Guido:
    Add what looks like a necessary call to PyErr_NoMemory() when PyMem_MALLOC()
    fails.

    Will backport.
  ........
    r55377 | neal.norwitz | 2007-05-15 22:06:33 -0700 (Tue, 15 May 2007) | 1 line

    Mention removal of some directories for obsolete platforms
  ........
    r55380 | brett.cannon | 2007-05-15 22:50:03 -0700 (Tue, 15 May 2007) | 2 lines

    Change the maintainer of the BeOS port.
  ........
    r55383 | georg.brandl | 2007-05-16 06:44:18 -0700 (Wed, 16 May 2007) | 2 lines

    Bug #1719995: don't use deprecated method in sets example.
  ........
    r55386 | neal.norwitz | 2007-05-16 13:05:11 -0700 (Wed, 16 May 2007) | 5 lines

    Fix bug in marshal where bad data would cause a segfault due to
    lack of an infinite recursion check.

    Contributed by Damien Miller at Google.
  ........
    r55389 | brett.cannon | 2007-05-16 15:42:29 -0700 (Wed, 16 May 2007) | 6 lines

    Remove the gopherlib module.  It has been raising a DeprecationWarning since
    Python 2.5.

    Also remove gopher support from urllib/urllib2.  As both imported gopherlib the
    usage of the support would have raised a DeprecationWarning.
  ........
    r55394 | raymond.hettinger | 2007-05-16 18:08:04 -0700 (Wed, 16 May 2007) | 1 line

    calendar.py gets no benefit from xrange() instead of range()
  ........
    r55395 | brett.cannon | 2007-05-16 19:02:56 -0700 (Wed, 16 May 2007) | 3 lines

    Complete deprecation of BaseException.message.  Some subclasses were directly
    accessing the message attribute instead of using the descriptor.
  ........
    r55396 | neal.norwitz | 2007-05-16 23:11:36 -0700 (Wed, 16 May 2007) | 4 lines

    Reduce the max stack depth to see if this fixes the segfaults on
    Windows and some other boxes.  If this is successful, this rev should
    be backported.  I'm not sure how close to the limit we should push this.
  ........
    r55397 | neal.norwitz | 2007-05-16 23:23:50 -0700 (Wed, 16 May 2007) | 4 lines

    Set the depth to something very small to try to determine if the
    crashes on Windows are really due to the stack size or possibly
    some other problem.
  ........
    r55398 | neal.norwitz | 2007-05-17 00:04:46 -0700 (Thu, 17 May 2007) | 4 lines

    Last try for tweaking the max stack depth.  5000 was the original value,
    4000 didn't work either.  1000 does work on Windows.  If 2000 works,
    that will hopefully be a reasonable balance.
  ........
    r55412 | fred.drake | 2007-05-17 12:29:58 -0700 (Thu, 17 May 2007) | 1 line

    fix argument name in documentation; match the implementation
  ........
    r55427 | neal.norwitz | 2007-05-17 22:47:16 -0700 (Thu, 17 May 2007) | 1 line

    Verify neither dumps or loads overflow the stack and segfault.
  ........
    r55446 | collin.winter | 2007-05-18 16:11:24 -0700 (Fri, 18 May 2007) | 1 line

    Backport PEP 3110's new 'except' syntax to 2.6.
  ........
    r55448 | raymond.hettinger | 2007-05-18 18:11:16 -0700 (Fri, 18 May 2007) | 1 line

    Improvements to NamedTuple's implementation, tests, and documentation
  ........
    r55449 | raymond.hettinger | 2007-05-18 18:50:11 -0700 (Fri, 18 May 2007) | 1 line

    Fix beginner mistake -- don't mix spaces and tabs.
  ........
    r55450 | neal.norwitz | 2007-05-18 20:48:47 -0700 (Fri, 18 May 2007) | 1 line

    Clear data so random memory does not get freed.  Will backport.
  ........
    r55452 | neal.norwitz | 2007-05-18 21:34:55 -0700 (Fri, 18 May 2007) | 3 lines

    Whoops, need to pay attention to those test failures.
    Move the clear to *before* the first use, not after.
  ........
    r55453 | neal.norwitz | 2007-05-18 21:35:52 -0700 (Fri, 18 May 2007) | 1 line

    Give some clue as to what happened if the test fails.
  ........
    r55455 | georg.brandl | 2007-05-19 11:09:26 -0700 (Sat, 19 May 2007) | 2 lines

    Fix docstring for add_package in site.py.
  ........
    r55458 | brett.cannon | 2007-05-20 00:09:50 -0700 (Sun, 20 May 2007) | 2 lines

    Remove the rgbimg module.  It has been deprecated since Python 2.5.
  ........
    r55465 | nick.coghlan | 2007-05-20 04:12:49 -0700 (Sun, 20 May 2007) | 1 line

    Fix typo in example (should be backported, but my maintenance branch is woefully out of date)
  ........
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  r55472 | brett.cannon | 2007-05-20 12:06:18 -0700 (Sun, 20 May 2007) | 2 lines

  Remove imageop from the Windows build process.
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  r55486 | neal.norwitz | 2007-05-20 23:59:52 -0700 (Sun, 20 May 2007) | 1 line

  Remove callable() builtin
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  r55506 | neal.norwitz | 2007-05-22 00:43:29 -0700 (Tue, 22 May 2007) | 78 lines

  Merged revisions 55468-55505 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r55468 | neal.norwitz | 2007-05-20 11:06:27 -0700 (Sun, 20 May 2007) | 1 line

    rotor is long gone.
  ........
    r55470 | neal.norwitz | 2007-05-20 11:43:00 -0700 (Sun, 20 May 2007) | 1 line

    Update directories/files at the top-level.
  ........
    r55471 | brett.cannon | 2007-05-20 12:05:06 -0700 (Sun, 20 May 2007) | 2 lines

    Try to remove rgbimg from Windows builds.
  ........
    r55474 | brett.cannon | 2007-05-20 16:17:38 -0700 (Sun, 20 May 2007) | 4 lines

    Remove the macfs module.  This led to the deprecation of macostools.touched();
    it completely relied on macfs and is a no-op on OS X according to code
    comments.
  ........
    r55476 | brett.cannon | 2007-05-20 16:56:18 -0700 (Sun, 20 May 2007) | 3 lines

    Move imgfile import to the global namespace to trigger an import error ASAP to
    prevent creation of a test file.
  ........
    r55477 | brett.cannon | 2007-05-20 16:57:38 -0700 (Sun, 20 May 2007) | 3 lines

    Cause posixfile to raise a DeprecationWarning.  Documented as deprecated since
    Ptyhon 1.5.
  ........
    r55479 | andrew.kuchling | 2007-05-20 17:03:15 -0700 (Sun, 20 May 2007) | 1 line

    Note removed modules
  ........
    r55481 | martin.v.loewis | 2007-05-20 21:35:47 -0700 (Sun, 20 May 2007) | 2 lines

    Add Alexandre Vassalotti.
  ........
    r55482 | george.yoshida | 2007-05-20 21:41:21 -0700 (Sun, 20 May 2007) | 4 lines

    fix against r55474 [Remove the macfs module]

    Remove "libmacfs.tex" from Makefile.deps and mac/mac.tex.
  ........
    r55487 | raymond.hettinger | 2007-05-21 01:13:35 -0700 (Mon, 21 May 2007) | 1 line

    Replace assertion with straight error-checking.
  ........
    r55489 | raymond.hettinger | 2007-05-21 09:40:10 -0700 (Mon, 21 May 2007) | 1 line

    Allow all alphanumeric and underscores in type and field names.
  ........
    r55490 | facundo.batista | 2007-05-21 10:32:32 -0700 (Mon, 21 May 2007) | 5 lines


    Added timeout support to HTTPSConnection, through the
    socket.create_connection function. Also added a small
    test for this, and updated NEWS file.
  ........
    r55495 | georg.brandl | 2007-05-21 13:34:16 -0700 (Mon, 21 May 2007) | 2 lines

    Patch #1686487: you can now pass any mapping after '**' in function calls.
  ........
    r55502 | neal.norwitz | 2007-05-21 23:03:36 -0700 (Mon, 21 May 2007) | 1 line

    Document new params to HTTPSConnection
  ........
    r55504 | neal.norwitz | 2007-05-22 00:16:10 -0700 (Tue, 22 May 2007) | 1 line

    Stop using METH_OLDARGS
  ........
    r55505 | neal.norwitz | 2007-05-22 00:16:44 -0700 (Tue, 22 May 2007) | 1 line

    Stop using METH_OLDARGS implicitly
  ........
................
2007-05-22 18:11:13 +00:00

451 lines
17 KiB
TeX

\section{\module{httplib} ---
HTTP protocol client}
\declaremodule{standard}{httplib}
\modulesynopsis{HTTP and HTTPS protocol client (requires sockets).}
\indexii{HTTP}{protocol}
\index{HTTP!\module{httplib} (standard module)}
This module defines classes which implement the client side of the
HTTP and HTTPS protocols. It is normally not used directly --- the
module \refmodule{urllib}\refstmodindex{urllib} uses it to handle URLs
that use HTTP and HTTPS.
\begin{notice}
HTTPS support is only available if the \refmodule{socket} module was
compiled with SSL support.
\end{notice}
\begin{notice}
The public interface for this module changed substantially in Python
2.0. The \class{HTTP} class is retained only for backward
compatibility with 1.5.2. It should not be used in new code. Refer
to the online docstrings for usage.
\end{notice}
The module provides the following classes:
\begin{classdesc}{HTTPConnection}{host\optional{, port\optional{,
strict\optional{, timeout}}}}
An \class{HTTPConnection} instance represents one transaction with an HTTP
server. It should be instantiated passing it a host and optional port number.
If no port number is passed, the port is extracted from the host string if it
has the form \code{\var{host}:\var{port}}, else the default HTTP port (80) is
used. When True, the optional parameter \var{strict}
causes \code{BadStatusLine} to be raised if the status line can't be parsed
as a valid HTTP/1.0 or 1.1 status line. If the optional \var{timeout}
parameter is given, connection attempts will timeout after that many
seconds (if it is not given or \code{None}, the global default
timeout setting is used).
For example, the following calls all create instances that connect to
the server at the same host and port:
\begin{verbatim}
>>> h1 = httplib.HTTPConnection('www.cwi.nl')
>>> h2 = httplib.HTTPConnection('www.cwi.nl:80')
>>> h3 = httplib.HTTPConnection('www.cwi.nl', 80)
>>> h3 = httplib.HTTPConnection('www.cwi.nl', 80, timeout=10)
\end{verbatim}
\versionadded{2.0}
\end{classdesc}
\begin{classdesc}{HTTPSConnection}{host\optional{, port\optional{,
key_file\optional{, cert_file\optional{,
strict\optional{, timeout}}}}}}
A subclass of \class{HTTPConnection} that uses SSL for communication with
secure servers. Default port is \code{443}.
\var{key_file} is
the name of a PEM formatted file that contains your private
key. \var{cert_file} is a PEM formatted certificate chain file.
\warning{This does not do any certificate verification!}
\versionadded{2.0}
\end{classdesc}
\begin{classdesc}{HTTPResponse}{sock\optional{, debuglevel=0}\optional{, strict=0}}
Class whose instances are returned upon successful connection. Not
instantiated directly by user.
\versionadded{2.0}
\end{classdesc}
The following exceptions are raised as appropriate:
\begin{excdesc}{HTTPException}
The base class of the other exceptions in this module. It is a
subclass of \exception{Exception}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{NotConnected}
A subclass of \exception{HTTPException}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{InvalidURL}
A subclass of \exception{HTTPException}, raised if a port is given and is
either non-numeric or empty.
\versionadded{2.3}
\end{excdesc}
\begin{excdesc}{UnknownProtocol}
A subclass of \exception{HTTPException}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{UnknownTransferEncoding}
A subclass of \exception{HTTPException}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{UnimplementedFileMode}
A subclass of \exception{HTTPException}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{IncompleteRead}
A subclass of \exception{HTTPException}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{ImproperConnectionState}
A subclass of \exception{HTTPException}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{CannotSendRequest}
A subclass of \exception{ImproperConnectionState}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{CannotSendHeader}
A subclass of \exception{ImproperConnectionState}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{ResponseNotReady}
A subclass of \exception{ImproperConnectionState}.
\versionadded{2.0}
\end{excdesc}
\begin{excdesc}{BadStatusLine}
A subclass of \exception{HTTPException}. Raised if a server responds with a
HTTP status code that we don't understand.
\versionadded{2.0}
\end{excdesc}
The constants defined in this module are:
\begin{datadesc}{HTTP_PORT}
The default port for the HTTP protocol (always \code{80}).
\end{datadesc}
\begin{datadesc}{HTTPS_PORT}
The default port for the HTTPS protocol (always \code{443}).
\end{datadesc}
and also the following constants for integer status codes:
\begin{tableiii}{l|c|l}{constant}{Constant}{Value}{Definition}
\lineiii{CONTINUE}{\code{100}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.1.1}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.1.1}}
\lineiii{SWITCHING_PROTOCOLS}{\code{101}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.1.2}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.1.2}}
\lineiii{PROCESSING}{\code{102}}
{WEBDAV, \ulink{RFC 2518, Section 10.1}
{http://www.webdav.org/specs/rfc2518.html#STATUS_102}}
\lineiii{OK}{\code{200}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.2.1}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.1}}
\lineiii{CREATED}{\code{201}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.2.2}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.2}}
\lineiii{ACCEPTED}{\code{202}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.2.3}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.3}}
\lineiii{NON_AUTHORITATIVE_INFORMATION}{\code{203}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.2.4}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.4}}
\lineiii{NO_CONTENT}{\code{204}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.2.5}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.5}}
\lineiii{RESET_CONTENT}{\code{205}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.2.6}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.6}}
\lineiii{PARTIAL_CONTENT}{\code{206}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.2.7}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.7}}
\lineiii{MULTI_STATUS}{\code{207}}
{WEBDAV \ulink{RFC 2518, Section 10.2}
{http://www.webdav.org/specs/rfc2518.html#STATUS_207}}
\lineiii{IM_USED}{\code{226}}
{Delta encoding in HTTP, \rfc{3229}, Section 10.4.1}
\lineiii{MULTIPLE_CHOICES}{\code{300}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.3.1}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.1}}
\lineiii{MOVED_PERMANENTLY}{\code{301}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.3.2}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.2}}
\lineiii{FOUND}{\code{302}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.3.3}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.3}}
\lineiii{SEE_OTHER}{\code{303}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.3.4}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.4}}
\lineiii{NOT_MODIFIED}{\code{304}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.3.5}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5}}
\lineiii{USE_PROXY}{\code{305}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.3.6}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.6}}
\lineiii{TEMPORARY_REDIRECT}{\code{307}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.3.8}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.8}}
\lineiii{BAD_REQUEST}{\code{400}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.1}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.1}}
\lineiii{UNAUTHORIZED}{\code{401}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.2}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.2}}
\lineiii{PAYMENT_REQUIRED}{\code{402}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.3}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.3}}
\lineiii{FORBIDDEN}{\code{403}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.4}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.4}}
\lineiii{NOT_FOUND}{\code{404}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.5}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.5}}
\lineiii{METHOD_NOT_ALLOWED}{\code{405}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.6}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.6}}
\lineiii{NOT_ACCEPTABLE}{\code{406}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.7}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.7}}
\lineiii{PROXY_AUTHENTICATION_REQUIRED}
{\code{407}}{HTTP/1.1, \ulink{RFC 2616, Section 10.4.8}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.8}}
\lineiii{REQUEST_TIMEOUT}{\code{408}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.9}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.9}}
\lineiii{CONFLICT}{\code{409}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.10}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.10}}
\lineiii{GONE}{\code{410}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.11}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.11}}
\lineiii{LENGTH_REQUIRED}{\code{411}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.12}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.12}}
\lineiii{PRECONDITION_FAILED}{\code{412}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.13}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.13}}
\lineiii{REQUEST_ENTITY_TOO_LARGE}
{\code{413}}{HTTP/1.1, \ulink{RFC 2616, Section 10.4.14}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.14}}
\lineiii{REQUEST_URI_TOO_LONG}{\code{414}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.15}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.15}}
\lineiii{UNSUPPORTED_MEDIA_TYPE}{\code{415}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.16}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.16}}
\lineiii{REQUESTED_RANGE_NOT_SATISFIABLE}{\code{416}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.17}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.17}}
\lineiii{EXPECTATION_FAILED}{\code{417}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.4.18}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.18}}
\lineiii{UNPROCESSABLE_ENTITY}{\code{422}}
{WEBDAV, \ulink{RFC 2518, Section 10.3}
{http://www.webdav.org/specs/rfc2518.html#STATUS_422}}
\lineiii{LOCKED}{\code{423}}
{WEBDAV \ulink{RFC 2518, Section 10.4}
{http://www.webdav.org/specs/rfc2518.html#STATUS_423}}
\lineiii{FAILED_DEPENDENCY}{\code{424}}
{WEBDAV, \ulink{RFC 2518, Section 10.5}
{http://www.webdav.org/specs/rfc2518.html#STATUS_424}}
\lineiii{UPGRADE_REQUIRED}{\code{426}}
{HTTP Upgrade to TLS, \rfc{2817}, Section 6}
\lineiii{INTERNAL_SERVER_ERROR}{\code{500}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.5.1}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.1}}
\lineiii{NOT_IMPLEMENTED}{\code{501}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.5.2}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.2}}
\lineiii{BAD_GATEWAY}{\code{502}}
{HTTP/1.1 \ulink{RFC 2616, Section 10.5.3}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.3}}
\lineiii{SERVICE_UNAVAILABLE}{\code{503}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.5.4}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.4}}
\lineiii{GATEWAY_TIMEOUT}{\code{504}}
{HTTP/1.1 \ulink{RFC 2616, Section 10.5.5}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.5}}
\lineiii{HTTP_VERSION_NOT_SUPPORTED}{\code{505}}
{HTTP/1.1, \ulink{RFC 2616, Section 10.5.6}
{http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.6}}
\lineiii{INSUFFICIENT_STORAGE}{\code{507}}
{WEBDAV, \ulink{RFC 2518, Section 10.6}
{http://www.webdav.org/specs/rfc2518.html#STATUS_507}}
\lineiii{NOT_EXTENDED}{\code{510}}
{An HTTP Extension Framework, \rfc{2774}, Section 7}
\end{tableiii}
\begin{datadesc}{responses}
This dictionary maps the HTTP 1.1 status codes to the W3C names.
Example: \code{httplib.responses[httplib.NOT_FOUND]} is \code{'Not Found'}.
\versionadded{2.5}
\end{datadesc}
\subsection{HTTPConnection Objects \label{httpconnection-objects}}
\class{HTTPConnection} instances have the following methods:
\begin{methoddesc}[HTTPConnection]{request}{method, url\optional{, body\optional{, headers}}}
This will send a request to the server using the HTTP request method
\var{method} and the selector \var{url}. If the \var{body} argument is
present, it should be a string of data to send after the headers are finished.
Alternatively, it may be an open file object, in which case the
contents of the file is sent; this file object should support
\code{fileno()} and \code{read()} methods.
The header Content-Length is automatically set to the correct value.
The \var{headers} argument should be a mapping of extra HTTP headers to send
with the request.
\versionchanged[\var{body} can be a file object]{2.6}
\end{methoddesc}
\begin{methoddesc}[HTTPConnection]{getresponse}{}
Should be called after a request is sent to get the response from the server.
Returns an \class{HTTPResponse} instance.
\note{Note that you must have read the whole response before you can send a new
request to the server.}
\end{methoddesc}
\begin{methoddesc}[HTTPConnection]{set_debuglevel}{level}
Set the debugging level (the amount of debugging output printed).
The default debug level is \code{0}, meaning no debugging output is
printed.
\end{methoddesc}
\begin{methoddesc}[HTTPConnection]{connect}{}
Connect to the server specified when the object was created.
\end{methoddesc}
\begin{methoddesc}[HTTPConnection]{close}{}
Close the connection to the server.
\end{methoddesc}
As an alternative to using the \method{request()} method described above,
you can also send your request step by step, by using the four functions
below.
\begin{methoddesc}[HTTPConnection]{putrequest}{request, selector\optional{,
skip\_host\optional{, skip_accept_encoding}}}
This should be the first call after the connection to the server has
been made. It sends a line to the server consisting of the
\var{request} string, the \var{selector} string, and the HTTP version
(\code{HTTP/1.1}). To disable automatic sending of \code{Host:} or
\code{Accept-Encoding:} headers (for example to accept additional
content encodings), specify \var{skip_host} or \var{skip_accept_encoding}
with non-False values.
\versionchanged[\var{skip_accept_encoding} argument added]{2.4}
\end{methoddesc}
\begin{methoddesc}[HTTPConnection]{putheader}{header, argument\optional{, ...}}
Send an \rfc{822}-style header to the server. It sends a line to the
server consisting of the header, a colon and a space, and the first
argument. If more arguments are given, continuation lines are sent,
each consisting of a tab and an argument.
\end{methoddesc}
\begin{methoddesc}[HTTPConnection]{endheaders}{}
Send a blank line to the server, signalling the end of the headers.
\end{methoddesc}
\begin{methoddesc}[HTTPConnection]{send}{data}
Send data to the server. This should be used directly only after the
\method{endheaders()} method has been called and before
\method{getresponse()} is called.
\end{methoddesc}
\subsection{HTTPResponse Objects \label{httpresponse-objects}}
\class{HTTPResponse} instances have the following methods and attributes:
\begin{methoddesc}[HTTPResponse]{read}{\optional{amt}}
Reads and returns the response body, or up to the next \var{amt} bytes.
\end{methoddesc}
\begin{methoddesc}[HTTPResponse]{getheader}{name\optional{, default}}
Get the contents of the header \var{name}, or \var{default} if there is no
matching header.
\end{methoddesc}
\begin{methoddesc}[HTTPResponse]{getheaders}{}
Return a list of (header, value) tuples. \versionadded{2.4}
\end{methoddesc}
\begin{memberdesc}[HTTPResponse]{msg}
A \class{mimetools.Message} instance containing the response headers.
\end{memberdesc}
\begin{memberdesc}[HTTPResponse]{version}
HTTP protocol version used by server. 10 for HTTP/1.0, 11 for HTTP/1.1.
\end{memberdesc}
\begin{memberdesc}[HTTPResponse]{status}
Status code returned by server.
\end{memberdesc}
\begin{memberdesc}[HTTPResponse]{reason}
Reason phrase returned by server.
\end{memberdesc}
\subsection{Examples \label{httplib-examples}}
Here is an example session that uses the \samp{GET} method:
\begin{verbatim}
>>> import httplib
>>> conn = httplib.HTTPConnection("www.python.org")
>>> conn.request("GET", "/index.html")
>>> r1 = conn.getresponse()
>>> print r1.status, r1.reason
200 OK
>>> data1 = r1.read()
>>> conn.request("GET", "/parrot.spam")
>>> r2 = conn.getresponse()
>>> print r2.status, r2.reason
404 Not Found
>>> data2 = r2.read()
>>> conn.close()
\end{verbatim}
Here is an example session that shows how to \samp{POST} requests:
\begin{verbatim}
>>> import httplib, urllib
>>> params = urllib.urlencode({'spam': 1, 'eggs': 2, 'bacon': 0})
>>> headers = {"Content-type": "application/x-www-form-urlencoded",
... "Accept": "text/plain"}
>>> conn = httplib.HTTPConnection("musi-cal.mojam.com:80")
>>> conn.request("POST", "/cgi-bin/query", params, headers)
>>> response = conn.getresponse()
>>> print response.status, response.reason
200 OK
>>> data = response.read()
>>> conn.close()
\end{verbatim}