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
265
266
267
268
269
270
271
|
<!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=http://www.nevrax.com><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>tcp_sock.cpp</h1><a href="tcp__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="tcp__sock_8h.html">nel/net/tcp_sock.h</a>"</font>
00029
00030 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00031 <font class="preprocessor"></font><font class="preprocessor">#include <winsock2.h></font>
00032 <font class="preprocessor">#define socklen_t int</font>
00033 <font class="preprocessor"></font><font class="preprocessor">#define ERROR_NUM WSAGetLastError()</font>
00034 <font class="preprocessor"></font>
00035 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00036 <font class="preprocessor"></font><font class="preprocessor">#include <<a class="code" href="unistd_8h.html">unistd.h</a>></font>
00037 <font class="preprocessor">#include <sys/types.h></font>
00038 <font class="preprocessor">#include <sys/time.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 <netinet/tcp.h></font>
00042 <font class="preprocessor">#include <arpa/inet.h></font>
00043 <font class="preprocessor">#include <netdb.h></font>
00044 <font class="preprocessor">#include <errno.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="preprocessor">#define ERROR_NUM errno</font>
00048 <font class="preprocessor"></font><font class="preprocessor">#define ERROR_MSG strerror(errno)</font>
00049 <font class="preprocessor"></font><font class="keyword">typedef</font> <font class="keywordtype">int</font> SOCKET;
00050
00051 <font class="preprocessor">#endif</font>
00052 <font class="preprocessor"></font>
00053 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00054
00055 <font class="keyword">namespace </font>NLNET {
00056
00057
00058 <font class="comment">/*</font>
00059 <font class="comment"> * Constructor</font>
00060 <font class="comment"> */</font>
<a name="l00061"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_0">00061</a> CTcpSock::CTcpSock( <font class="keywordtype">bool</font> logging ) :
00062 CSock( logging )
00063 {}
00064
00065
00066 <font class="comment">/*</font>
00067 <font class="comment"> * Construct a CTcpSocket object using an already connected socket </font>
00068 <font class="comment"> */</font>
<a name="l00069"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_1">00069</a> CTcpSock::CTcpSock( SOCKET sock, <font class="keyword">const</font> CInetAddress& remoteaddr ) :
00070 CSock( sock, remoteaddr )
00071 {}
00072
00073
00074 <font class="comment">/* Connection. You can reconnect a socket after being disconnected.</font>
00075 <font class="comment"> * This method does not return a boolean, otherwise a programmer could ignore the result and no</font>
00076 <font class="comment"> * exception would be thrown if connection fails :</font>
00077 <font class="comment"> * - If addr is not valid, an exception ESocket is thrown</font>
00078 <font class="comment"> * - If connect() fails for another reason, an exception ESocketConnectionFailed is thrown</font>
00079 <font class="comment"> */</font>
<a name="l00080"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_2">00080</a> <font class="keywordtype">void</font> CTcpSock::connect( <font class="keyword">const</font> CInetAddress& addr )
00081 {
00082 <font class="comment">// Create a new socket</font>
00083 <font class="keywordflow">if</font> ( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a> != INVALID_SOCKET )
00084 {
00085 <font class="keywordflow">if</font> ( _Logging )
00086 {
00087 <font class="comment">// nldebug( "LNETL0: Closing socket %d before reconnecting", _Sock );</font>
00088 }
00089 <a class="code" href="classNLNET_1_1CSock.html#z343_3">close</a>();
00090 }
00091 <a class="code" href="classNLNET_1_1CSock.html#b2">createSocket</a>( SOCK_STREAM, IPPROTO_TCP );
00092
00093 <font class="comment">// Connection</font>
00094 CSock::connect( addr );
00095 }
00096
00097
00098 <font class="comment">/*</font>
00099 <font class="comment"> * Active disconnection. After disconnecting, you can't connect back with the same socket.</font>
00100 <font class="comment"> */</font>
<a name="l00101"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_8">00101</a> <font class="keywordtype">void</font> CTcpSock::disconnect()
00102 {
00103 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Socket %d disconnecting from %s..."</font>, <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, <a class="code" href="classNLNET_1_1CSock.html#n2">_RemoteAddr</a>.asString().c_str() );
00104
00105 <font class="comment">// This shutdown resets the connection immediatly (not a graceful closure)</font>
00106 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00107 <font class="preprocessor"></font> ::shutdown( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SD_BOTH );
00108 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00109 <font class="preprocessor"></font> ::shutdown( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SHUT_RDWR );
00110 <font class="preprocessor">#endif</font>
00111 <font class="preprocessor"></font> <font class="comment">/*CSynchronized<bool>::CAccessor sync( &_SyncConnected );</font>
00112 <font class="comment"> sync.value() = false;*/</font>
00113 <a class="code" href="classNLNET_1_1CSock.html#n5">_Connected</a> = <font class="keyword">false</font>;
00114 }
00115
00116
00117 <font class="comment">/*</font>
00118 <font class="comment"> * Active disconnection for download way only</font>
00119 <font class="comment"> */</font>
<a name="l00120"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_6">00120</a> <font class="keywordtype">void</font> CTcpSock::shutdownReceiving()
00121 {
00122 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00123 <font class="preprocessor"></font> ::shutdown( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SD_RECEIVE );
00124 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00125 <font class="preprocessor"></font> ::shutdown( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SHUT_RD );
00126 <font class="preprocessor">#endif</font>
00127 <font class="preprocessor"></font>}
00128
00129
00130 <font class="comment">/*</font>
00131 <font class="comment"> * Active disconnection for upload way only</font>
00132 <font class="comment"> */</font>
<a name="l00133"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_7">00133</a> <font class="keywordtype">void</font> CTcpSock::shutdownSending()
00134 {
00135 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00136 <font class="preprocessor"></font> ::shutdown( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SD_SEND );
00137 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00138 <font class="preprocessor"></font> ::shutdown( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SHUT_WR );
00139 <font class="preprocessor">#endif</font>
00140 <font class="preprocessor"></font>}
00141
00142
00143 <font class="comment">/*</font>
00144 <font class="comment"> * Sets/unsets TCP_NODELAY</font>
00145 <font class="comment"> */</font>
<a name="l00146"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_5">00146</a> <font class="keywordtype">void</font> CTcpSock::setNoDelay( <font class="keywordtype">bool</font> value )
00147 {
00148 <font class="keywordtype">int</font> b = value?1:0;
00149 <font class="keywordflow">if</font> ( setsockopt( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, IPPROTO_TCP, TCP_NODELAY, (<font class="keywordtype">char</font>*)&b, <font class="keyword">sizeof</font>(b) ) != 0 )
00150 {
00151 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"setNoDelay failed"</font> );
00152 }
00153 }
00154
00155
00156 <font class="comment">/* Sets a custom TCP Window size (SO_RCVBUF and SO_SNDBUF).</font>
00157 <font class="comment"> * You must close the socket is necessary, before calling this method.</font>
00158 <font class="comment"> *</font>
00159 <font class="comment"> * See http://www.ncsa.uiuc.edu/People/vwelch/net_perf/tcp_windows.html</font>
00160 <font class="comment"> */</font>
<a name="l00161"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_3">00161</a> <font class="keywordtype">void</font> CTcpSock::connectWithCustomWindowSize( <font class="keyword">const</font> CInetAddress& addr, <font class="keywordtype">int</font> windowsize )
00162 {
00163 <font class="comment">// Create socket</font>
00164 <font class="keywordflow">if</font> ( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a> != INVALID_SOCKET )
00165 {
00166 <a class="code" href="debug_8h.html#a3">nlerror</a>( <font class="stringliteral">"Cannot connect with custom window size when already connected"</font> );
00167 }
00168 <a class="code" href="classNLNET_1_1CSock.html#b2">createSocket</a>( SOCK_STREAM, IPPROTO_TCP );
00169
00170 <font class="comment">// Change window size</font>
00171 <font class="keywordflow">if</font> ( setsockopt( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SOL_SOCKET, SO_SNDBUF, (<font class="keywordtype">char</font>*)&windowsize, <font class="keyword">sizeof</font>(windowsize) ) != 0
00172 || setsockopt( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SOL_SOCKET, SO_RCVBUF, (<font class="keywordtype">char</font>*)&windowsize, <font class="keyword">sizeof</font>(windowsize) ) != 0 )
00173 {
00174 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"setWindowSize failed"</font> );
00175 }
00176
00177 <font class="comment">// Connection</font>
00178 CSock::connect( addr );
00179 }
00180
00181
00182 <font class="comment">/*</font>
00183 <font class="comment"> * Returns the TCP Window Size for the current socket</font>
00184 <font class="comment"> */</font>
<a name="l00185"></a><a class="code" href="classNLNET_1_1CTcpSock.html#z347_4">00185</a> <a class="code" href="types__nl_8h.html#a9">uint32</a> CTcpSock::getWindowSize()
00186 {
00187 <font class="keywordtype">int</font> windowsize = 0;
00188 socklen_t <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> = <font class="keyword">sizeof</font>( windowsize );
00189
00190 <font class="comment">/* send buffer -- query for buffer size */</font>
00191 <font class="keywordflow">if</font> ( getsockopt( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SOL_SOCKET, SO_SNDBUF, (<font class="keywordtype">char</font>*) &windowsize, &<a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> ) == 0 )
00192 {
00193 <font class="keywordflow">return</font> windowsize;
00194 }
00195 <font class="keywordflow">else</font>
00196 {
00197 <font class="keywordflow">return</font> 0;
00198 }
00199 }
00200
00201
00202 } <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>
|
