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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
<html>
<head>
<!--#include virtual="header.html" -->
<title>Joe Gregorio | BitWorking | Projects | httplib2.py</title>
</head>
<body class='main' id="top" name="top" >
<div class="body">
<!--#include virtual="titlebar.html" -->
<div class="content">
<div>
<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 2.3 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 (t.broyer@ltgt.net) </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>
</div>
</div>
<!--#include virtual="footer.html" -->
</div>
</body>
</html>
|
