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<H1><A NAME="SECTION0013000000000000000000"></A><A NAME="internet"></A>
<BR>
11. Internet Protocols and Support 
</H1>

<P>
<a id='l2h-3139' xml:id='l2h-3139'></a>

<P>
The modules described in this chapter implement Internet protocols and 
support for related technology.  They are all implemented in Python.
Most of these modules require the presence of the system-dependent
module <tt class="module"><a href="module-socket.html">socket</a></tt><a id='l2h-3140' xml:id='l2h-3140'></a>, which is currently
supported on most popular platforms.  Here is an overview:

<P>
<table class='synopsistable' valign='baseline'>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-webbrowser.html'>webbrowser</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Easy-to-use controller for Web browsers.</td></tr>
  <tr><td><b><tt class='module'><a href='module-cgi.html'>cgi</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Common Gateway Interface support, used to interpret
forms in server-side scripts.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-cgitb.html'>cgitb</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Configurable traceback handler for CGI scripts.</td></tr>
  <tr><td><b><tt class='module'><a href='module-urllib.html'>urllib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Open an arbitrary network resource by URL (requires sockets).</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-urllib2.html'>urllib2</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>An extensible library for opening URLs using a variety of 
                protocols</td></tr>
  <tr><td><b><tt class='module'><a href='module-httplib.html'>httplib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>HTTP and HTTPS protocol client (requires sockets).</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-ftplib.html'>ftplib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>FTP protocol client (requires sockets).</td></tr>
  <tr><td><b><tt class='module'><a href='module-gopherlib.html'>gopherlib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Gopher protocol client (requires sockets).</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-poplib.html'>poplib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>POP3 protocol client (requires sockets).</td></tr>
  <tr><td><b><tt class='module'><a href='module-imaplib.html'>imaplib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>IMAP4 protocol client (requires sockets).</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-nntplib.html'>nntplib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>NNTP protocol client (requires sockets).</td></tr>
  <tr><td><b><tt class='module'><a href='module-smtplib.html'>smtplib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>SMTP protocol client (requires sockets).</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-smtpd.html'>smtpd</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Implement a flexible SMTP server</td></tr>
  <tr><td><b><tt class='module'><a href='module-telnetlib.html'>telnetlib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Telnet client class.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-urlparse.html'>urlparse</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Parse URLs into components.</td></tr>
  <tr><td><b><tt class='module'><a href='module-SocketServer.html'>SocketServer</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>A framework for network servers.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-BaseHTTPServer.html'>BaseHTTPServer</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Basic HTTP server (base class for
                <tt class="class">SimpleHTTPServer</tt> and <tt class="class">CGIHTTPServer</tt>).</td></tr>
  <tr><td><b><tt class='module'><a href='module-SimpleHTTPServer.html'>SimpleHTTPServer</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>This module provides a basic request handler for HTTP
                servers.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-CGIHTTPServer.html'>CGIHTTPServer</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>This module provides a request handler for HTTP servers
                which can run CGI scripts.</td></tr>
  <tr><td><b><tt class='module'><a href='module-cookielib.html'>cookielib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Cookie handling for HTTP clients</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-Cookie.html'>Cookie</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Support for HTTP state management (cookies).</td></tr>
  <tr><td><b><tt class='module'><a href='module-xmlrpclib.html'>xmlrpclib</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>XML-RPC client access.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-SimpleXMLRPCServer.html'>SimpleXMLRPCServer</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Basic XML-RPC server implementation.</td></tr>
  <tr><td><b><tt class='module'><a href='module-DocXMLRPCServer.html'>DocXMLRPCServer</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Self-documenting XML-RPC server implementation.</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-asyncore.html'>asyncore</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>A base class for developing asynchronous socket 
                handling services.</td></tr>
  <tr><td><b><tt class='module'><a href='module-asynchat.html'>asynchat</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Support for asynchronous command/response protocols.</td></tr>
</table>

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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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	17	<title>11. Internet Protocols and Support </title>
	18	</head>
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	20	<DIV CLASS="navigation">
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	54
	55	<H1><A NAME="SECTION0013000000000000000000"></A><A NAME="internet"></A>
	56	<BR>
	57	11. Internet Protocols and Support
	58	</H1>
	59
	60	<P>
	61	<a id='l2h-3139' xml:id='l2h-3139'></a>
	62
	63	<P>
	64	The modules described in this chapter implement Internet protocols and
65	support for related technology. They are all implemented in Python.
66	Most of these modules require the presence of the system-dependent
67	module <tt class="module"><a href="module-socket.html">socket</a></tt><a id='l2h-3140' xml:id='l2h-3140'></a>, which is currently
68	supported on most popular platforms. Here is an overview:
69
70	<P>
71	<table class='synopsistable' valign='baseline'>
72	<tr class='oddrow'>
73	<td><b><tt class='module'><a href='module-webbrowser.html'>webbrowser</a></tt></b></td>
74	<td> </td>
75	<td class='synopsis'>Easy-to-use controller for Web browsers.</td></tr>
76	<tr><td><b><tt class='module'><a href='module-cgi.html'>cgi</a></tt></b></td>
77	<td> </td>
78	<td class='synopsis'>Common Gateway Interface support, used to interpret
79	forms in server-side scripts.</td></tr>
80	<tr class='oddrow'>
81	<td><b><tt class='module'><a href='module-cgitb.html'>cgitb</a></tt></b></td>
82	<td> </td>
83	<td class='synopsis'>Configurable traceback handler for CGI scripts.</td></tr>
84	<tr><td><b><tt class='module'><a href='module-urllib.html'>urllib</a></tt></b></td>
85	<td> </td>
86	<td class='synopsis'>Open an arbitrary network resource by URL (requires sockets).</td></tr>
87	<tr class='oddrow'>
88	<td><b><tt class='module'><a href='module-urllib2.html'>urllib2</a></tt></b></td>
89	<td> </td>
90	<td class='synopsis'>An extensible library for opening URLs using a variety of
91	protocols</td></tr>
92	<tr><td><b><tt class='module'><a href='module-httplib.html'>httplib</a></tt></b></td>
93	<td> </td>
94	<td class='synopsis'>HTTP and HTTPS protocol client (requires sockets).</td></tr>
95	<tr class='oddrow'>
96	<td><b><tt class='module'><a href='module-ftplib.html'>ftplib</a></tt></b></td>
97	<td> </td>
98	<td class='synopsis'>FTP protocol client (requires sockets).</td></tr>
99	<tr><td><b><tt class='module'><a href='module-gopherlib.html'>gopherlib</a></tt></b></td>
100	<td> </td>
101	<td class='synopsis'>Gopher protocol client (requires sockets).</td></tr>
102	<tr class='oddrow'>
103	<td><b><tt class='module'><a href='module-poplib.html'>poplib</a></tt></b></td>
104	<td> </td>
105	<td class='synopsis'>POP3 protocol client (requires sockets).</td></tr>
106	<tr><td><b><tt class='module'><a href='module-imaplib.html'>imaplib</a></tt></b></td>
107	<td> </td>
108	<td class='synopsis'>IMAP4 protocol client (requires sockets).</td></tr>
109	<tr class='oddrow'>
110	<td><b><tt class='module'><a href='module-nntplib.html'>nntplib</a></tt></b></td>
111	<td> </td>
112	<td class='synopsis'>NNTP protocol client (requires sockets).</td></tr>
113	<tr><td><b><tt class='module'><a href='module-smtplib.html'>smtplib</a></tt></b></td>
114	<td> </td>
115	<td class='synopsis'>SMTP protocol client (requires sockets).</td></tr>
116	<tr class='oddrow'>
117	<td><b><tt class='module'><a href='module-smtpd.html'>smtpd</a></tt></b></td>
118	<td> </td>
119	<td class='synopsis'>Implement a flexible SMTP server</td></tr>
120	<tr><td><b><tt class='module'><a href='module-telnetlib.html'>telnetlib</a></tt></b></td>
121	<td> </td>
122	<td class='synopsis'>Telnet client class.</td></tr>
123	<tr class='oddrow'>
124	<td><b><tt class='module'><a href='module-urlparse.html'>urlparse</a></tt></b></td>
125	<td> </td>
126	<td class='synopsis'>Parse URLs into components.</td></tr>
127	<tr><td><b><tt class='module'><a href='module-SocketServer.html'>SocketServer</a></tt></b></td>
128	<td> </td>
129	<td class='synopsis'>A framework for network servers.</td></tr>
130	<tr class='oddrow'>
131	<td><b><tt class='module'><a href='module-BaseHTTPServer.html'>BaseHTTPServer</a></tt></b></td>
132	<td> </td>
133	<td class='synopsis'>Basic HTTP server (base class for
134	<tt class="class">SimpleHTTPServer</tt> and <tt class="class">CGIHTTPServer</tt>).</td></tr>
135	<tr><td><b><tt class='module'><a href='module-SimpleHTTPServer.html'>SimpleHTTPServer</a></tt></b></td>
136	<td> </td>
137	<td class='synopsis'>This module provides a basic request handler for HTTP
138	servers.</td></tr>
139	<tr class='oddrow'>
140	<td><b><tt class='module'><a href='module-CGIHTTPServer.html'>CGIHTTPServer</a></tt></b></td>
141	<td> </td>
142	<td class='synopsis'>This module provides a request handler for HTTP servers
143	which can run CGI scripts.</td></tr>
144	<tr><td><b><tt class='module'><a href='module-cookielib.html'>cookielib</a></tt></b></td>
145	<td> </td>
146	<td class='synopsis'>Cookie handling for HTTP clients</td></tr>
147	<tr class='oddrow'>
148	<td><b><tt class='module'><a href='module-Cookie.html'>Cookie</a></tt></b></td>
149	<td> </td>
150	<td class='synopsis'>Support for HTTP state management (cookies).</td></tr>
151	<tr><td><b><tt class='module'><a href='module-xmlrpclib.html'>xmlrpclib</a></tt></b></td>
152	<td> </td>
153	<td class='synopsis'>XML-RPC client access.</td></tr>
154	<tr class='oddrow'>
155	<td><b><tt class='module'><a href='module-SimpleXMLRPCServer.html'>SimpleXMLRPCServer</a></tt></b></td>
156	<td> </td>
157	<td class='synopsis'>Basic XML-RPC server implementation.</td></tr>
158	<tr><td><b><tt class='module'><a href='module-DocXMLRPCServer.html'>DocXMLRPCServer</a></tt></b></td>
159	<td> </td>
160	<td class='synopsis'>Self-documenting XML-RPC server implementation.</td></tr>
161	<tr class='oddrow'>
162	<td><b><tt class='module'><a href='module-asyncore.html'>asyncore</a></tt></b></td>
163	<td> </td>
164	<td class='synopsis'>A base class for developing asynchronous socket
165	handling services.</td></tr>
166	<tr><td><b><tt class='module'><a href='module-asynchat.html'>asynchat</a></tt></b></td>
167	<td> </td>
168	<td class='synopsis'>Support for asynchronous command/response protocols.</td></tr>
169	</table>
170
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206	<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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