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
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>3.3.2 Connection objects </title>
<META NAME="description" CONTENT="3.3.2 Connection objects ">
<META NAME="keywords" CONTENT="pyOpenSSL">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
<link rel="STYLESHEET" href="pyOpenSSL.css">
<LINK REL="previous" href="openssl-context.html">
<LINK REL="up" href="openssl-ssl.html">
<LINK REL="next" href="internals.html">
</head>
<body>
<DIV CLASS="navigation">
<table align="center" width="100%" cellpadding="0" cellspacing="2">
<tr>
<td><A href="openssl-context.html"><img src="previous.gif"
border="0" height="32"
alt="Previous Page" width="32"></A></td>
<td><A href="openssl-ssl.html"><img src="up.gif"
border="0" height="32"
alt="Up One Level" width="32"></A></td>
<td><A href="internals.html"><img src="next.gif"
border="0" height="32"
alt="Next Page" width="32"></A></td>
<td align="center" width="100%">Python OpenSSL Manual</td>
<td><A href="contents.html"><img src="contents.gif"
border="0" height="32"
alt="Contents" width="32"></A></td>
<td><img src="blank.gif"
border="0" height="32"
alt="" width="32"></td>
<td><img src="blank.gif"
border="0" height="32"
alt="" width="32"></td>
</tr></table>
<b class="navlabel">Previous:</b> <a class="sectref" href="openssl-context.html">3.3.1 Context objects</A>
<b class="navlabel">Up:</b> <a class="sectref" href="openssl-ssl.html">3.3 SSL </A>
<b class="navlabel">Next:</b> <a class="sectref" href="internals.html">4 Internals</A>
<br><hr>
</DIV>
<!--End of Navigation Panel-->
<H3><A NAME="SECTION000432000000000000000"> </A>
<BR>
3.3.2 Connection objects
</H3>
<P>
<EM><EM><EM>Connection objects have the following methods:
</EM></EM></EM>
<P>
<dl><dt><b><a name='l2h-137'><tt class='method'>accept</tt></a></b>()
<dd>
Call the <tt class="method">accept</tt> method of the underlying socket and set up SSL on the
returned socket, using the Context object supplied to this Connection object at
creation. Returns a pair <code>(<var>conn</var>, <var>address</var>)</code>. where <var>conn</var>
is the new Connection object created, and <var>address</var> is as returned by the
socket's <tt class="method">accept</tt>.
</dl>
<P>
<dl><dt><b><a name='l2h-138'><tt class='method'>bind</tt></a></b>(<var>address</var>)
<dd>
Call the <tt class="method">bind</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-139'><tt class='method'>close</tt></a></b>()
<dd>
Call the <tt class="method">close</tt> method of the underlying socket. Note: If you want
correct SSL closure, you need to call the <tt class="method">shutdown</tt> method first.
</dl>
<P>
<dl><dt><b><a name='l2h-140'><tt class='method'>connect</tt></a></b>(<var>address</var>)
<dd>
Call the <tt class="method">connect</tt> method of the underlying socket and set up SSL on the
socket, using the Context object supplied to this Connection object at
creation.
</dl>
<P>
<dl><dt><b><a name='l2h-141'><tt class='method'>connect_ex</tt></a></b>(<var>address</var>)
<dd>
Call the <tt class="method">connect_ex</tt> method of the underlying socket and set up SSL on
the socket, using the Context object supplied to this Connection object at
creation. Note that if the <tt class="method">connect_ex</tt> method of the socket doesn't
return 0, SSL won't be initialized.
</dl>
<P>
<dl><dt><b><a name='l2h-142'><tt class='method'>do_handshake</tt></a></b>()
<dd>
Perform an SSL handshake (usually called after <tt class="method">renegotiate</tt> or one of
<tt class="method">set_accept_state</tt> or <tt class="method">set_accept_state</tt>). This can raise the
same exceptions as <tt class="method">send</tt> and <tt class="method">recv</tt>.
</dl>
<P>
<dl><dt><b><a name='l2h-143'><tt class='method'>fileno</tt></a></b>()
<dd>
Retrieve the file descriptor number for the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-144'><tt class='method'>listen</tt></a></b>(<var>backlog</var>)
<dd>
Call the <tt class="method">listen</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-145'><tt class='method'>get_app_data</tt></a></b>()
<dd>
Retrieve application data as set by <tt class="method">set_app_data</tt>.
</dl>
<P>
<dl><dt><b><a name='l2h-146'><tt class='method'>get_cipher_list</tt></a></b>()
<dd>
Retrieve the list of ciphers used by the Connection object. WARNING: This API
has changed. It used to take an optional parameter and just return a string,
but not it returns the entire list in one go.
</dl>
<P>
<dl><dt><b><a name='l2h-147'><tt class='method'>get_context</tt></a></b>()
<dd>
Retrieve the Context object associated with this Connection.
</dl>
<P>
<dl><dt><b><a name='l2h-148'><tt class='method'>get_peer_certificate</tt></a></b>()
<dd>
Retrieve the other side's certificate (if any)
</dl>
<P>
<dl><dt><b><a name='l2h-149'><tt class='method'>getpeername</tt></a></b>()
<dd>
Call the <tt class="method">getpeername</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-150'><tt class='method'>getsockname</tt></a></b>()
<dd>
Call the <tt class="method">getsockname</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-151'><tt class='method'>getsockopt</tt></a></b>(<var>level, optname</var><big>[</big><var>, buflen</var><big>]</big>)
<dd>
Call the <tt class="method">getsockopt</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-152'><tt class='method'>pending</tt></a></b>()
<dd>
Retrieve the number of bytes that can be safely read from the SSL buffer.
</dl>
<P>
<dl><dt><b><a name='l2h-153'><tt class='method'>recv</tt></a></b>(<var>bufsize</var>)
<dd>
Receive data from the Connection. The return value is a string representing the
data received. The maximum amount of data to be received at once, is specified
by <var>bufsize</var>.
</dl>
<P>
<dl><dt><b><a name='l2h-154'><tt class='method'>renegotiate</tt></a></b>()
<dd>
Renegotiate the SSL session. Call this if you wish to change cipher suites or
anything like that.
</dl>
<P>
<dl><dt><b><a name='l2h-155'><tt class='method'>send</tt></a></b>(<var>string</var>)
<dd>
Send the <var>string</var> data to the Connection.
</dl>
<P>
<dl><dt><b><a name='l2h-156'><tt class='method'>sendall</tt></a></b>(<var>string</var>)
<dd>
Send all of the <var>string</var> data to the Connection. This calls <tt class="method">send</tt>
repeatedly until all data is sent. If an error occurs, it's impossible to tell
how much data has been sent.
</dl>
<P>
<dl><dt><b><a name='l2h-157'><tt class='method'>set_accept_state</tt></a></b>()
<dd>
Set the connection to work in server mode. The handshake will be handled
automatically by read/write.
</dl>
<P>
<dl><dt><b><a name='l2h-158'><tt class='method'>set_app_data</tt></a></b>(<var>data</var>)
<dd>
Associate <var>data</var> with this Connection object. <var>data</var> can be retrieved
later using the <tt class="method">get_app_data</tt> method.
</dl>
<P>
<dl><dt><b><a name='l2h-159'><tt class='method'>set_connect_state</tt></a></b>()
<dd>
Set the connection to work in client mode. The handshake will be handled
automatically by read/write.
</dl>
<P>
<dl><dt><b><a name='l2h-160'><tt class='method'>setblocking</tt></a></b>(<var>flag</var>)
<dd>
Call the <tt class="method">setblocking</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-161'><tt class='method'>setsockopt</tt></a></b>(<var>level, optname, value</var>)
<dd>
Call the <tt class="method">setsockopt</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-162'><tt class='method'>shutdown</tt></a></b>()
<dd>
Send the shutdown message to the Connection. Returns true if the shutdown
message exchange is completed and false otherwise (in which case you call
<tt class="method">recv()</tt> or <tt class="method">send()</tt> when the connection becomes
readable/writeable.
</dl>
<P>
<dl><dt><b><a name='l2h-163'><tt class='method'>sock_shutdown</tt></a></b>(<var>how</var>)
<dd>
Call the <tt class="method">shutdown</tt> method of the underlying socket.
</dl>
<P>
<dl><dt><b><a name='l2h-164'><tt class='method'>state_string</tt></a></b>()
<dd>
Retrieve a verbose string detailing the state of the Connection.
</dl>
<P>
<dl><dt><b><a name='l2h-165'><tt class='method'>want_read</tt></a></b>()
<dd>
Checks if more data has to be read from the transport layer to complete an
operation.
</dl>
<P>
<dl><dt><b><a name='l2h-166'><tt class='method'>want_write</tt></a></b>()
<dd>
Checks if there is data to write to the transport layer to complete an
operation.
</dl>
<P>
<DIV CLASS="navigation">
<p><hr>
<table align="center" width="100%" cellpadding="0" cellspacing="2">
<tr>
<td><A href="openssl-context.html"><img src="previous.gif"
border="0" height="32"
alt="Previous Page" width="32"></A></td>
<td><A href="openssl-ssl.html"><img src="up.gif"
border="0" height="32"
alt="Up One Level" width="32"></A></td>
<td><A href="internals.html"><img src="next.gif"
border="0" height="32"
alt="Next Page" width="32"></A></td>
<td align="center" width="100%">Python OpenSSL Manual</td>
<td><A href="contents.html"><img src="contents.gif"
border="0" height="32"
alt="Contents" width="32"></A></td>
<td><img src="blank.gif"
border="0" height="32"
alt="" width="32"></td>
<td><img src="blank.gif"
border="0" height="32"
alt="" width="32"></td>
</tr></table>
<b class="navlabel">Previous:</b> <a class="sectref" href="openssl-context.html">3.3.1 Context objects</A>
<b class="navlabel">Up:</b> <a class="sectref" href="openssl-ssl.html">3.3 SSL </A>
<b class="navlabel">Next:</b> <a class="sectref" href="internals.html">4 Internals</A>
<hr>
<span class="release-info">Release 0.6.</span>
</DIV>
<!--End of Navigation Panel-->
</BODY>
</HTML>
|
