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
|
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>nevrax.org : docs</TITLE>
<LINK REL=stylesheet TYPE="text/css" HREF="/inc/css/nevrax.css">
<link href="doxygen.css" rel="stylesheet" type="text/css">
</HEAD>
<BODY MARGINHEIGHT="0" MARGINWIDTH="0">
<!-- uplinks -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR>
<TD WIDTH=16><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD WIDTH=140 BGCOLOR=#dddddd><IMG SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD WIDTH=16><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD><IMG width=6 height=14 SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle> <A CLASS=uplinks HREF='/'><b>Home</B></FONT></A> </TD>
<TD><IMG width=6 height=14 SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle> <A CLASS=uplinks HREF=><b>nevrax.com</B></FONT></A> </TD>
</TR>
</TABLE>
<!-- banner Nevrax -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0 WIDTH=100%>
<TR><TD BGCOLOR="#000000" BACKGROUND="/inc/img/black_banner.jpg"><A HREF=""><IMG SRC="/inc/img/nevrax.gif" WIDTH="170" HEIGHT="45" BORDER=0 ALT="Nevrax" ></A></TD></TR>
</TABLE>
<!-- main table -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0 height=100%>
<TR>
<TD WIDTH=16><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="10" BORDER=0 ALT=""></TD>
<TD WIDTH=140 BGCOLOR=#dddddd VALIGN=TOP ALIGN=middle><IMG SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">
<!------ Begin Box ------>
<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0 BGCOLOR=black><TR><TD><TABLE border=0 cellspacing=2 cellpadding=0 width=120><tr><TD ALIGN=middle bgcolor=black>
<FONT COLOR=white FACE="sans-serif"><B>Nevrax.org</B></FONT></TD></TR><tr><td colspan=2 bgcolor=#FFFFFF>
<TABLE cellspacing=0 cellpadding=1 border=0>
<tr><td ALIGN=middle><a class='linkbox' href="/news/" TITLE="Rubrique news"><img width=13 height=15 hspace=5 border=0 src=/inc/img/picto-news.gif ALT=#></A></td><td><a class='linkbox' href="/news/" TITLE="News">News</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/mail/" TITLE="Rubrique mail"><img width=15 height=11 hspace=5 border=0 src=/inc/img/picto-mail.gif ALT=#></A></td><td><a class='linkbox' href="/mail/" TITLE="Mailing list archive">Mailing-list</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/docs/" TITLE="Rubrique docs"><img width=14 height=16 hspace=5 border=0 src=/inc/img/picto-docs.gif ALT=#></A></td><td><a class='linkbox' href="/docs/" TITLE="Documentation">Documentation</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/cvs/" TITLE="Rubrique cvs"><img width=13 height=17 hspace=5 border=0 src=/inc/img/picto-cvs.gif ALT=#></A></td><td><a class='linkbox' href="/cvs/" TITLE="CVS Web">CVS</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/bugs/" TITLE="Rubrique bugs"><img width=20 height=16 hspace=5 border=0 src=/inc/img/picto-bugs.gif ALT=#></A></td><td><a class='linkbox' href="/bugs/" TITLE="Bugtracking">Bugs</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/GPL.php3" TITLE="Rubrique license"><img width=18 height=12 hspace=5 border=0 src=/inc/img/picto-gpl.gif ALT=#></A></td><td><a class='linkbox' href="/GPL.php3" TITLE="License">License</a></td></tr>
</TABLE>
</TD></TR></TABLE></TD></TR></TABLE>
<!------ End Box ------>
</TD>
<TD WIDTH=15><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD ALIGN=left valign=top><IMG SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">
<!-- title -->
<TABLE background="/inc/img/redline.gif" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td>
<A HREF="/docs/"><img src="/inc/img/t_docs.gif" ALT="Docs" HEIGHT=20 BORDER=0></A>
</td><td><IMG SRC="/inc/img/pixel.gif" WIDTH="1" HEIGHT="1" BORDER=0 ALT="">
</td></tr></table>
<!-- block -->
<TABLE bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="/inc/img/reddots.gif"></TD>
<TD><B>Documentation</B></TD>
<TD ALIGN=RIGHT> </td>
</tr></table>
<!-- Generated by Doxygen 1.2.14 -->
<center>
<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:/cgi-bin/nel-search.cgi" href="/cgi-bin/nel-search.cgi">Search</a> </center>
<hr><h1>listen_sock.cpp</h1><a href="listen__sock_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026 <font class="preprocessor">#include "<a class="code" href="stdnet_8h.html">stdnet.h</a>"</font>
00027
00028 <font class="preprocessor">#include "<a class="code" href="listen__sock_8h.html">nel/net/listen_sock.h</a>"</font>
00029
00030 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00031 <font class="preprocessor"></font>
00032 <font class="preprocessor">#include <winsock2.h></font>
00033 <font class="keyword">typedef</font> <a class="code" href="types__nl_8h.html#a13">sint</a> socklen_t;
00034
00035 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00036 <font class="preprocessor"></font>
00037 <font class="preprocessor">#include <<a class="code" href="unistd_8h.html">unistd.h</a>></font>
00038 <font class="preprocessor">#include <sys/types.h></font>
00039 <font class="preprocessor">#include <sys/socket.h></font>
00040 <font class="preprocessor">#include <netinet/in.h></font>
00041 <font class="preprocessor">#include <arpa/inet.h></font>
00042 <font class="preprocessor">#include <netdb.h></font>
00043 <font class="preprocessor">#include <errno.h></font>
00044 <font class="preprocessor">#include <fcntl.h></font>
00045 <font class="preprocessor">#define SOCKET_ERROR -1</font>
00046 <font class="preprocessor"></font><font class="preprocessor">#define INVALID_SOCKET -1</font>
00047 <font class="preprocessor"></font><font class="keyword">typedef</font> <font class="keywordtype">int</font> SOCKET;
00048
00049 <font class="preprocessor">#endif</font>
00050 <font class="preprocessor"></font>
00051
00052 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00053
00054
00055 <font class="keyword">namespace </font>NLNET
00056 {
00057
00058
00059 <font class="comment">/*</font>
00060 <font class="comment"> * Constructor</font>
00061 <font class="comment"> */</font>
<a name="l00062"></a><a class="code" href="classNLNET_1_1CListenSock.html#a0">00062</a> CListenSock::CListenSock() : CTcpSock(), _Bound( false )
00063 {
00064 <font class="comment">// Create socket</font>
00065 <a class="code" href="classNLNET_1_1CSock.html#b2">createSocket</a>( SOCK_STREAM, IPPROTO_TCP );
00066
00068 <a class="code" href="classNLNET_1_1CListenSock.html#z341_2">setBacklog</a>( -1 );
00069 }
00070
00071
00072 <font class="comment">/*</font>
00073 <font class="comment"> * Prepares to receive connections on a specified port</font>
00074 <font class="comment"> */</font>
<a name="l00075"></a><a class="code" href="classNLNET_1_1CListenSock.html#z341_0">00075</a> <font class="keywordtype">void</font> CListenSock::init( <a class="code" href="types__nl_8h.html#a8">uint16</a> port )
00076 {
00077 <font class="comment">// Use any address</font>
00078 CInetAddress localaddr; <font class="comment">// By default, INETADDR_ANY (useful for gateways that have several ip addresses)</font>
00079 localaddr.setPort( port );
00080 <a class="code" href="classNLNET_1_1CListenSock.html#z341_0">init</a>( localaddr );
00081
00082 <font class="comment">// Now set the address visible from outside</font>
00083 <a class="code" href="classNLNET_1_1CSock.html#n1">_LocalAddr</a> = CInetAddress::localHost();
00084 <a class="code" href="classNLNET_1_1CSock.html#n1">_LocalAddr</a>.setPort( port );
00085 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Socket %d listen socket is at %s"</font>, <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, <a class="code" href="classNLNET_1_1CSock.html#n1">_LocalAddr</a>.asString().c_str() );
00086 }
00087
00088
00089 <font class="comment">/*</font>
00090 <font class="comment"> * Prepares to receive connections on a specified address/port (useful when the host has several addresses)</font>
00091 <font class="comment"> */</font>
<a name="l00092"></a><a class="code" href="classNLNET_1_1CListenSock.html#z341_1">00092</a> <font class="keywordtype">void</font> CListenSock::init( <font class="keyword">const</font> CInetAddress& addr )
00093 {
00094 <font class="keywordflow">if</font> ( ! addr.isValid() )
00095 {
00096 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Binding listen socket to any address, port %hu"</font>, addr.port() );
00097 }
00098
00099 <font class="preprocessor">#ifndef NL_OS_WINDOWS</font>
00100 <font class="preprocessor"></font> <font class="comment">// Set Reuse Address On (does not work on Win98 and is useless on Win2000)</font>
00101 <font class="keywordtype">int</font> value = <font class="keyword">true</font>;
00102 <font class="keywordflow">if</font> ( setsockopt( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SOL_SOCKET, SO_REUSEADDR, &value, <font class="keyword">sizeof</font>(value) ) == SOCKET_ERROR )
00103 {
00104 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"ReuseAddr failed"</font> );
00105 }
00106 <font class="preprocessor">#endif</font>
00107 <font class="preprocessor"></font>
00108 <font class="comment">// Bind socket to port </font>
00109 <font class="keywordflow">if</font> ( ::bind( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, (<font class="keyword">const</font> sockaddr *)addr.sockAddr(), <font class="keyword">sizeof</font>(sockaddr_in) ) != 0 )
00110 {
00111 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Unable to bind listen socket to port"</font> );
00112 }
00113 <a class="code" href="classNLNET_1_1CSock.html#n1">_LocalAddr</a> = addr;
00114 <a class="code" href="classNLNET_1_1CListenSock.html#o0">_Bound</a> = <font class="keyword">true</font>;
00115
00116 <font class="comment">// Listen</font>
00117 <font class="keywordflow">if</font> ( ::listen( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, <a class="code" href="classNLNET_1_1CListenSock.html#o1">_BackLog</a> ) != 0 ) <font class="comment">// SOMAXCONN = maximum length of the queue of pending connections</font>
00118 {
00119 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Unable to listen on specified port"</font> );
00120 }
00121 <font class="comment">// nldebug( "LNETL0: Socket %d listening at %s", _Sock, _LocalAddr.asString().c_str() );</font>
00122 }
00123
00124
00125 <font class="comment">/*</font>
00126 <font class="comment"> * Accepts an incoming connection, and creates a new socket</font>
00127 <font class="comment"> */</font>
<a name="l00128"></a><a class="code" href="classNLNET_1_1CListenSock.html#a1">00128</a> CTcpSock *CListenSock::accept()
00129 {
00130 <font class="comment">// Accept connection</font>
00131 sockaddr_in saddr;
00132 socklen_t saddrlen = <font class="keyword">sizeof</font>(saddr);
00133 SOCKET newsock = ::accept( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, (sockaddr*)&saddr, &saddrlen );
00134 <font class="keywordflow">if</font> ( newsock == INVALID_SOCKET )
00135 {
00136 <font class="comment">/*nlinfo( "LNETL0: Error accepting a connection");</font>
00137 <font class="comment"> // See accept() man on Linux</font>
00138 <font class="comment"> newsock = ::accept( _Sock, (sockaddr*)&saddr, &saddrlen );</font>
00139 <font class="comment"> if ( newsock == INVALID_SOCKET )*/</font>
00140 {
00141 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Accept returned an invalid socket"</font>);
00142 }
00143 }
00144
00145 <font class="comment">// Construct and save a CTcpSock object</font>
00146 CInetAddress addr;
00147 addr.setSockAddr( &saddr );
00148 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Socket %d accepted an incoming connection from %s, opening socket %d"</font>, <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, addr.asString().c_str(), newsock );
00149 <a class="code" href="classNLNET_1_1CTcpSock.html#z352_0">CTcpSock</a> *connection = <font class="keyword">new</font> <a class="code" href="classNLNET_1_1CTcpSock.html#z352_0">CTcpSock</a>( newsock, addr );
00150 <font class="keywordflow">return</font> connection;
00151 }
00152
00153
00154 <font class="comment">/*</font>
00155 <font class="comment"> * Sets the number of the pending connections queue. -1 for the maximum possible value.</font>
00156 <font class="comment"> */</font>
<a name="l00157"></a><a class="code" href="classNLNET_1_1CListenSock.html#z341_2">00157</a> <font class="keywordtype">void</font> CListenSock::setBacklog( <a class="code" href="types__nl_8h.html#a13">sint</a> backlog )
00158 {
00159 <font class="keywordflow">if</font> ( <a class="code" href="classNLNET_1_1CListenSock.html#z341_3">backlog</a> == -1 )
00160 {
00161 <a class="code" href="classNLNET_1_1CListenSock.html#o1">_BackLog</a> = SOMAXCONN; <font class="comment">// SOMAXCONN = maximum length of the queue of pending connections</font>
00162 }
00163 <font class="keywordflow">else</font>
00164 {
00165 <a class="code" href="classNLNET_1_1CListenSock.html#o1">_BackLog</a> = <a class="code" href="classNLNET_1_1CListenSock.html#z341_3">backlog</a>;
00166 }
00167 <font class="keywordflow">if</font> ( _Bound )
00168 {
00169 <font class="keywordflow">if</font> ( ::listen( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, <a class="code" href="classNLNET_1_1CListenSock.html#o1">_BackLog</a> ) != 0 )
00170 {
00171 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Unable to listen on specified port, while changing backlog"</font> );
00172 }
00173 }
00174 }
00175
00176
00177 } <font class="comment">// NLNET</font>
</pre></div>
<!-- footer -->
<BR><FONT Size=+5> </FONT>
</TD>
<TD WIDTH=15><IMG SRC=/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD>
</TR>
</TABLE>
</BODY>
</HTML>
|
