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45<H3><A NAME="SECTION000432000000000000000">&nbsp;</A>
46<BR>
473.3.2 Connection objects
48</H3>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]49
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]50<P>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]51Connection objects have the following methods:
52
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]53<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]54<dl><dt><b><a name='l2h-145'><tt class='method'>accept</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]55<dd>
56Call the <tt class="method">accept</tt> method of the underlying socket and set up SSL on the
57returned socket, using the Context object supplied to this Connection object at
58creation. Returns a pair <code>(<var>conn</var>, <var>address</var>)</code>. where <var>conn</var>
59is the new Connection object created, and <var>address</var> is as returned by the
60socket's <tt class="method">accept</tt>.
61</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]62
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]63<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]64<dl><dt><b><a name='l2h-146'><tt class='method'>bind</tt></a></b>(<var>address</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]65<dd>
66Call the <tt class="method">bind</tt> method of the underlying socket.
67</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]68
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]69<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]70<dl><dt><b><a name='l2h-147'><tt class='method'>close</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]71<dd>
72Call the <tt class="method">close</tt> method of the underlying socket. Note: If you want
73correct SSL closure, you need to call the <tt class="method">shutdown</tt> method first.
74</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]75
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]76<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]77<dl><dt><b><a name='l2h-148'><tt class='method'>connect</tt></a></b>(<var>address</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]78<dd>
79Call the <tt class="method">connect</tt> method of the underlying socket and set up SSL on the
80socket, using the Context object supplied to this Connection object at
81creation.
82</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]83
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]84<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]85<dl><dt><b><a name='l2h-149'><tt class='method'>connect_ex</tt></a></b>(<var>address</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]86<dd>
87Call the <tt class="method">connect_ex</tt> method of the underlying socket and set up SSL on
88the socket, using the Context object supplied to this Connection object at
89creation. Note that if the <tt class="method">connect_ex</tt> method of the socket doesn't
90return 0, SSL won't be initialized.
91</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]92
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]93<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]94<dl><dt><b><a name='l2h-150'><tt class='method'>do_handshake</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]95<dd>
96Perform an SSL handshake (usually called after <tt class="method">renegotiate</tt> or one of
97<tt class="method">set_accept_state</tt> or <tt class="method">set_accept_state</tt>). This can raise the
98same exceptions as <tt class="method">send</tt> and <tt class="method">recv</tt>.
99</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]100
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]101<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]102<dl><dt><b><a name='l2h-151'><tt class='method'>fileno</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]103<dd>
104Retrieve the file descriptor number for the underlying socket.
105</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]106
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]107<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]108<dl><dt><b><a name='l2h-152'><tt class='method'>listen</tt></a></b>(<var>backlog</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]109<dd>
110Call the <tt class="method">listen</tt> method of the underlying socket.
111</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]112
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]113<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]114<dl><dt><b><a name='l2h-153'><tt class='method'>get_app_data</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]115<dd>
116Retrieve application data as set by <tt class="method">set_app_data</tt>.
117</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]118
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]119<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]120<dl><dt><b><a name='l2h-154'><tt class='method'>get_cipher_list</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]121<dd>
122Retrieve the list of ciphers used by the Connection object. WARNING: This API
123has changed. It used to take an optional parameter and just return a string,
124but not it returns the entire list in one go.
125</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]126
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]127<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]128<dl><dt><b><a name='l2h-155'><tt class='method'>get_context</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]129<dd>
130Retrieve the Context object associated with this Connection.
131</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]132
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]133<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]134<dl><dt><b><a name='l2h-156'><tt class='method'>get_peer_certificate</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]135<dd>
136Retrieve the other side's certificate (if any)
137</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]138
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]139<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]140<dl><dt><b><a name='l2h-157'><tt class='method'>getpeername</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]141<dd>
142Call the <tt class="method">getpeername</tt> method of the underlying socket.
143</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]144
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]145<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]146<dl><dt><b><a name='l2h-158'><tt class='method'>getsockname</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]147<dd>
148Call the <tt class="method">getsockname</tt> method of the underlying socket.
149</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]150
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]151<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]152<dl><dt><b><a name='l2h-159'><tt class='method'>getsockopt</tt></a></b>(<var>level, optname</var><big>[</big><var>, buflen</var><big>]</big>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]153<dd>
154Call the <tt class="method">getsockopt</tt> method of the underlying socket.
155</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]156
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]157<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]158<dl><dt><b><a name='l2h-160'><tt class='method'>pending</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]159<dd>
Jean-Paul Calderoneb6f57be2008-03-06 21:22:16 -0500[diff] [blame]160Retrieve the number of bytes that can be safely read from the SSL buffer
161(<i>not</i> the underlying transport buffer).
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]162</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]163
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]164<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]165<dl><dt><b><a name='l2h-161'><tt class='method'>recv</tt></a></b>(<var>bufsize</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]166<dd>
167Receive data from the Connection. The return value is a string representing the
168data received. The maximum amount of data to be received at once, is specified
169by <var>bufsize</var>.
170</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]171
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]172<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]173<dl><dt><b><a name='l2h-162'><tt class='method'>renegotiate</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]174<dd>
175Renegotiate the SSL session. Call this if you wish to change cipher suites or
176anything like that.
177</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]178
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]179<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]180<dl><dt><b><a name='l2h-163'><tt class='method'>send</tt></a></b>(<var>string</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]181<dd>
182Send the <var>string</var> data to the Connection.
183</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]184
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]185<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]186<dl><dt><b><a name='l2h-164'><tt class='method'>sendall</tt></a></b>(<var>string</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]187<dd>
188Send all of the <var>string</var> data to the Connection. This calls <tt class="method">send</tt>
189repeatedly until all data is sent. If an error occurs, it's impossible to tell
190how much data has been sent.
191</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]192
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]193<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]194<dl><dt><b><a name='l2h-165'><tt class='method'>set_accept_state</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]195<dd>
196Set the connection to work in server mode. The handshake will be handled
197automatically by read/write.
198</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]199
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]200<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]201<dl><dt><b><a name='l2h-166'><tt class='method'>set_app_data</tt></a></b>(<var>data</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]202<dd>
203Associate <var>data</var> with this Connection object. <var>data</var> can be retrieved
204later using the <tt class="method">get_app_data</tt> method.
205</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]206
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]207<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]208<dl><dt><b><a name='l2h-167'><tt class='method'>set_connect_state</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]209<dd>
210Set the connection to work in client mode. The handshake will be handled
211automatically by read/write.
212</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]213
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]214<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]215<dl><dt><b><a name='l2h-168'><tt class='method'>setblocking</tt></a></b>(<var>flag</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]216<dd>
217Call the <tt class="method">setblocking</tt> method of the underlying socket.
218</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]219
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]220<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]221<dl><dt><b><a name='l2h-169'><tt class='method'>setsockopt</tt></a></b>(<var>level, optname, value</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]222<dd>
223Call the <tt class="method">setsockopt</tt> method of the underlying socket.
224</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]225
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]226<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]227<dl><dt><b><a name='l2h-170'><tt class='method'>shutdown</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]228<dd>
229Send the shutdown message to the Connection. Returns true if the shutdown
230message exchange is completed and false otherwise (in which case you call
231<tt class="method">recv()</tt> or <tt class="method">send()</tt> when the connection becomes
232readable/writeable.
233</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]234
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]235<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]236<dl><dt><b><a name='l2h-171'><tt class='method'>get_shutdown</tt></a></b>()
Jean-Paul Calderone72b8f0f2008-02-21 23:57:40 -0500[diff] [blame]237<dd>
238Get the shutdown state of the Connection. Returns a bitvector of either or
239both of <var>SENT_SHUTDOWN</var> and <var>RECEIVED_SHUTDOWN</var>.
240</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]241
Jean-Paul Calderone72b8f0f2008-02-21 23:57:40 -0500[diff] [blame]242<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]243<dl><dt><b><a name='l2h-172'><tt class='method'>set_shutdown</tt></a></b>(<var>state</var>)
Jean-Paul Calderone72b8f0f2008-02-21 23:57:40 -0500[diff] [blame]244<dd>
245Set the shutdown state of the Connection. <var>state</var> is a bitvector of
246either or both of <var>SENT_SHUTDOWN</var> and <var>RECEIVED_SHUTDOWN</var>.
247</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]248
Jean-Paul Calderone72b8f0f2008-02-21 23:57:40 -0500[diff] [blame]249<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]250<dl><dt><b><a name='l2h-173'><tt class='method'>sock_shutdown</tt></a></b>(<var>how</var>)
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]251<dd>
252Call the <tt class="method">shutdown</tt> method of the underlying socket.
253</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]254
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]255<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]256<dl><dt><b><a name='l2h-174'><tt class='method'>state_string</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]257<dd>
258Retrieve a verbose string detailing the state of the Connection.
259</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]260
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]261<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]262<dl><dt><b><a name='l2h-175'><tt class='method'>want_read</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]263<dd>
264Checks if more data has to be read from the transport layer to complete an
265operation.
266</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]267
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]268<P>
Jean-Paul Calderonec54cc182008-03-26 21:11:07 -0400[diff] [blame^]269<dl><dt><b><a name='l2h-176'><tt class='method'>want_write</tt></a></b>()
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]270<dd>
271Checks if there is data to write to the transport layer to complete an
272operation.
273</dl>
Jean-Paul Calderone2aa2b332008-03-06 21:43:14 -0500[diff] [blame]274
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]275<P>
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Jean-Paul Calderoned2532d82008-03-25 15:20:39 -0400[diff] [blame]305<span class="release-info">Release 0.7a2.</span>
Jean-Paul Calderone897bc252008-02-18 20:50:23 -0500[diff] [blame]306</DIV>
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