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| <h2>Httplib2</h2> |
| <p>A comprehensive HTTP client library, <code>httplib2.py</code> |
| supports many features left out of other HTTP libraries. |
| </p> |
| <dl> |
| <dt>HTTP and HTTPS</dt> |
| <dd>HTTPS support is only available if the socket module was compiled with SSL support. |
| </dd> |
| |
| <dt>Keep-Alive</dt> |
| <dd>Supports HTTP 1.1 Keep-Alive, keeping the socket |
| open and performing multiple requests over the same connection |
| if possible. |
| </dd> |
| |
| <dt>Authentication</dt> |
| <dd>The following types of HTTP Authentication are supported. |
| These can be used over both HTTP and HTTPS. |
| <ul> |
| <li><a href="http://www.faqs.org/rfcs/rfc2617.html">Digest</a></li> |
| <li><a href="http://www.faqs.org/rfcs/rfc2617.html">Basic</a></li> |
| <li><a href="http://www.xml.com/pub/a/2003/12/17/dive.html">WSSE</a></li> |
| <li><a href="http://franklinmint.fm/2006/02/28/draft-sayre-http-hmac-digest.html">HMAC Digest</a></li> |
| <li><a href="http://code.google.com/apis/accounts/AuthForInstalledApps.html">Google Account Authentication</a></li> |
| </ul> |
| </dd> |
| |
| <dt>Caching</dt> |
| <dd>The module can optionally operate with a private |
| cache that understands the Cache-Control: header and |
| uses both the ETag and Last-Modified cache validators. |
| </dd> |
| |
| <dt>All Methods</dt> |
| <dd>The module can handle any HTTP request method, not just GET and POST.</dd> |
| |
| <dt>Redirects</dt> |
| <dd>Automatically follows 3XX redirects on GETs.</dd> |
| |
| <dt>Compression</dt> |
| <dd>Handles both 'deflate' and 'gzip' types of compression.</dd> |
| |
| <dt>Lost update support</dt> |
| <dd>Automatically adds back ETags into PUT requests to resources |
| we have already cached. This implements Section 3.2 of |
| <a href="http://www.w3.org/1999/04/Editing/#Table">Detecting the Lost Update Problem Using Unreserved Checkout</a></dd> |
| |
| <dt>Unit Tested</dt> |
| <dd>A large and growing set of unit tests.</dd> |
| |
| </dl> |
| |
| <h3>Usage</h3> |
| |
| <p>A simple retrieval:</p> |
| |
| <pre><code>import httplib2 |
| h = httplib2.Http(".cache") |
| resp, content = h.request("http://example.org/", "GET") |
| </code></pre> |
| |
| <p>The 'content' is the content retrieved from the URL. |
| The content is already decompressed or unzipped if necessary. |
| The 'resp' contains all the response headers. |
| </p> |
| |
| <p>To PUT some content to a server that uses SSL |
| and Basic authentication:</p> |
| |
| <pre><code>import httplib2 |
| h = httplib2.Http(".cache") |
| h.add_credentials('name', 'password') |
| resp, content = h.request("https://example.org/chap/2", |
| "PUT", body="This is text", |
| headers={'content-type':'text/plain'} ) |
| </code></pre> |
| |
| <p>Use the Cache-Control: header to control |
| how the caching operates.</p> |
| |
| <pre><code>import httplib2 |
| h = httplib2.Http(".cache") |
| resp, content = h.request("http://bitworking.org/") |
| ... |
| resp, content = h.request("http://bitworking.org/", |
| headers={'cache-control':'no-cache'}) |
| </code></pre> |
| |
| <p>The first request will be cached and since this is a request to |
| bitworking.org it will be set to be cached for two hours, because |
| that is how I have my server configured. |
| Any subsequent GET to that URI will return the value from the |
| on-disk cache and no request will be made to the server. |
| You can use the Cache-Control: header to change the caches behavior and |
| in this example the second request adds the Cache-Control: header with a value |
| of 'no-cache' which tells the library that the cached copy |
| must not be used when handling this request. |
| </p> |
| |
| <h3>Requirements</h3> |
| |
| <p>Requires Python 2.7, 3.4, or later. Does not require |
| any libraries beyond what is found in the core library.</p> |
| |
| <h3>Download/Installation</h3> |
| |
| <p>The latest release of httplib2 is 0.3.0 and |
| can be <a href="dist">downloaded from the from |
| the dist directory</a>. See the |
| <a href="CHANGELOG">CHANGELOG</a> for what's new in this |
| version.</p> |
| |
| |
| <p>The httplib2 module is shipped as a distutils package. To install |
| the library, first unpack the distribution archive, and issue the following |
| command:</p> |
| |
| <pre><code>$ python setup.py install</code></pre> |
| |
| <p><a href="dist">Download the distribution archives from here</a>. </p> |
| |
| <p> <a href="test">The resources used in the unit test cases</a> |
| are available also. More documentation on them will be forthcoming.</p> |
| |
| <p>You can also get the sources directly from the SourceForge hosted |
| subversion repository.</p> |
| |
| <pre>svn co https://httplib2.svn.sourceforge.net/svnroot/httplib2/trunk httplib2</pre> |
| |
| |
| <h3>Documentation</h3> |
| |
| <p>In addition to the <a href="ref/">Python library style documentation</a> there |
| are also two articles on XML.com, <a href="http://www.xml.com/pub/a/2006/02/01/doing-http-caching-right-introducing-httplib2.html"> |
| Doing HTTP Caching Right: Introducing httplib2</a> and |
| <a href="http://www.xml.com/pub/a/2006/03/29/httplib2-http-persistence-and-authentication.html"> |
| httplib2: HTTP Persistence and Authentication </a>. |
| |
| </p> |
| |
| <h3>Feedback</h3> |
| |
| <p>Bugs and enhancement requests are handled through |
| <a href="http://sourceforge.net/projects/httplib2/">SourceForge</a>, and anything is up for discussion |
| on the <a href="http://sourceforge.net/mail/?group_id=161082">httplib2 mailing list</a>. |
| </p> |
| |
| <h3>To Do</h3> |
| |
| <p>This module is not perfect and needs the following:</p> |
| <ul> |
| <li>Support for Proxies</li> |
| <li>A pluggable store for the cache is in place, with plugins for |
| flat files and memcached. |
| I eventually want to have plugins that allow keeping the cache in Berkeley DB, MySQL, etc.</li> |
| <li>More unit tests</li> |
| </ul> |
| |
| <h3>Project Goal</h3> |
| |
| <p>To become a worthy addition to the Python core library.</p> |
| |
| <h3>Additional Information</h3> |
| |
| <p> |
| <dl> |
| <dt>Author</dt> |
| <dd>Joe Gregorio</dd> |
| |
| <dt>License</dt> |
| <dd>MIT</dd> |
| |
| <dt>Contributors</dt> |
| |
| <dd> Thomas Broyer ([email protected]) </dd> |
| <dd> James Antill </dd> |
| <dd> Xavier Verges Farrero </dd> |
| <dd> Jonathan Feinberg </dd> |
| <dd> Blair Zajac </dd> |
| <dd> Sam Ruby</dd> |
| <dd> Louis Nyffenegger </dd> |
| <dd> (Your Name Here) </dd> |
| </dl> |
| </p> |
| |
| <p style="font-size: small">This page last updated on: $LastChangedDate$.</p> |
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