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| author | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
|---|---|---|
| committer | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
| commit | 0ea5fc66924303d1bf73ba283a383e2aadee02f2 (patch) | |
| tree | 2568e71a7ccc44ec23b8bb3f0ff97fb6bf2ed709 /docs/doxygen/nel/udp__sock_8cpp-source.html | |
| download | nevrax-website-self-hostable-0ea5fc66924303d1bf73ba283a383e2aadee02f2.tar.xz nevrax-website-self-hostable-0ea5fc66924303d1bf73ba283a383e2aadee02f2.zip | |
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| -rw-r--r-- | docs/doxygen/nel/udp__sock_8cpp-source.html | 272 |
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+</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="http://www.nevrax.org/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:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>udp_sock.cpp</h1><a href="udp__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="udp__sock_8h.html">nel/net/udp_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="comment">//#include <fcntl.h></font> +00046 <font class="preprocessor">#define SOCKET_ERROR -1</font> +00047 <font class="preprocessor"></font><font class="preprocessor">#define INVALID_SOCKET -1</font> +00048 <font class="preprocessor"></font><font class="preprocessor">#define ERROR_NUM errno</font> +00049 <font class="preprocessor"></font><font class="preprocessor">#define ERROR_MSG strerror(errno)</font> +00050 <font class="preprocessor"></font><font class="keyword">typedef</font> <font class="keywordtype">int</font> SOCKET; +00051 +00052 <font class="preprocessor">#endif</font> +00053 <font class="preprocessor"></font> +00054 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC; +00055 +00056 <font class="keyword">namespace </font>NLNET { +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_1CUdpSock.html#z349_0">00062</a> CUdpSock::CUdpSock( <font class="keywordtype">bool</font> logging ) : +00063 CSock( logging ), +00064 _Bound( false ) +00065 { +00066 <font class="comment">// Socket creation</font> +00067 <a class="code" href="classNLNET_1_1CSock.html#b2">createSocket</a>( SOCK_DGRAM, IPPROTO_UDP ); +00068 } +00069 +00070 +<a name="l00074"></a><a class="code" href="classNLNET_1_1CUdpSock.html#z349_1">00074</a> <font class="keywordtype">void</font> CUdpSock::bind( <a class="code" href="types__nl_8h.html#a7">uint16</a> port ) +00075 { +00076 CInetAddress addr; <font class="comment">// any IP address</font> +00077 addr.setPort( port ); +00078 <a class="code" href="classNLNET_1_1CUdpSock.html#z349_1">bind</a>( addr ); +00079 <a class="code" href="classNLNET_1_1CSock.html#b3">setLocalAddress</a>(); <font class="comment">// will not set the address if the host is multihomed, use bind(CInetAddress) instead</font> +00080 } +00081 +00082 +00083 <font class="comment">/*</font> +00084 <font class="comment"> * Same as bind(uint16) but binds on a specified address/port (useful when the host has several addresses)</font> +00085 <font class="comment"> */</font> +<a name="l00086"></a><a class="code" href="classNLNET_1_1CUdpSock.html#z349_2">00086</a> <font class="keywordtype">void</font> CUdpSock::bind( <font class="keyword">const</font> CInetAddress& addr ) +00087 { +00088 <font class="preprocessor">#ifndef NL_OS_WINDOWS</font> +00089 <font class="preprocessor"></font> <font class="comment">// Set Reuse Address On (does not work on Win98 and is useless on Win2000)</font> +00090 <font class="keywordtype">int</font> value = <font class="keyword">true</font>; +00091 <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 ) +00092 { +00093 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"ReuseAddr failed"</font> ); +00094 } +00095 <font class="preprocessor">#endif</font> +00096 <font class="preprocessor"></font> +00097 <a class="code" href="classNLNET_1_1CSock.html#n1">_LocalAddr</a> = addr; +00098 +00099 <font class="comment">// Bind the socket</font> +00100 <font class="keywordflow">if</font> ( ::bind( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, (sockaddr*)(<a class="code" href="classNLNET_1_1CSock.html#n1">_LocalAddr</a>.sockAddr()), <font class="keyword">sizeof</font>(sockaddr) ) == SOCKET_ERROR ) +00101 { +00102 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Bind failed"</font> ); +00103 } +00104 <a class="code" href="classNLNET_1_1CUdpSock.html#o0">_Bound</a> = <font class="keyword">true</font>; +00105 <font class="keywordflow">if</font> ( _Logging ) +00106 { +00107 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Socket %d bound 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() ); +00108 } +00109 } +00110 +00111 +00112 <font class="comment">/*</font> +00113 <font class="comment"> * Sends a message</font> +00114 <font class="comment"> */</font> +<a name="l00115"></a><a class="code" href="classNLNET_1_1CUdpSock.html#z351_0">00115</a> <font class="keywordtype">void</font> CUdpSock::sendTo( <font class="keyword">const</font> <a class="code" href="types__nl_8h.html#a5">uint8</a> *buffer, <a class="code" href="types__nl_8h.html#a13">uint</a> <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>, <font class="keyword">const</font> CInetAddress& addr ) +00116 { +00117 +00118 <font class="comment">// Send</font> +00119 <font class="keywordflow">if</font> ( ::sendto( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, (<font class="keyword">const</font> <font class="keywordtype">char</font>*)buffer, <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>, 0, (sockaddr*)(addr.sockAddr()), <font class="keyword">sizeof</font>(sockaddr) ) != (sint32)<a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> ) +00120 { +00121 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Unable to send datagram"</font> ); +00122 } +00123 <a class="code" href="classNLNET_1_1CSock.html#n7">_BytesSent</a> += <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>; +00124 +00125 <font class="keywordflow">if</font> ( _Logging ) +00126 { +00127 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Socket %d sent %d bytes to %s"</font>, <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>, addr.asString().c_str() ); +00128 } +00129 +00130 <font class="comment">// If socket is unbound, retrieve local address</font> +00131 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLNET_1_1CUdpSock.html#o0">_Bound</a> ) +00132 { +00133 <a class="code" href="classNLNET_1_1CSock.html#b3">setLocalAddress</a>(); +00134 <a class="code" href="classNLNET_1_1CUdpSock.html#o0">_Bound</a> = <font class="keyword">true</font>; +00135 } +00136 +00137 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font> +00138 <font class="preprocessor"></font> <font class="comment">// temporary by ace to know size of SO_MAX_MSG_SIZE</font> +00139 <font class="keyword">static</font> <font class="keywordtype">bool</font> first = <font class="keyword">true</font>; +00140 <font class="keywordflow">if</font> (first) +00141 { +00142 <a class="code" href="types__nl_8h.html#a13">uint</a> MMS, SB; +00143 <font class="keywordtype">int</font> <a class="code" href="lexlang_8cpp.html#a56">size</a> = <font class="keyword">sizeof</font> (MMS); +00144 getsockopt (<a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SOL_SOCKET, SO_SNDBUF, (<font class="keywordtype">char</font> *)&SB, &<a class="code" href="lexlang_8cpp.html#a56">size</a>); +00145 getsockopt (<a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, SOL_SOCKET, SO_MAX_MSG_SIZE, (<font class="keywordtype">char</font> *)&MMS, &<a class="code" href="lexlang_8cpp.html#a56">size</a>); +00146 <a class="code" href="debug_8h.html#a1">nlinfo</a> (<font class="stringliteral">"the udp SO_MAX_MSG_SIZE=%u, SO_SNDBUF=%u"</font>, MMS, SB); +00147 first = <font class="keyword">false</font>; +00148 } +00149 <font class="preprocessor">#endif</font> +00150 <font class="preprocessor"></font>} +00151 +00152 +00153 <font class="comment">/*</font> +00154 <font class="comment"> * Receives data from the peer. (blocking function)</font> +00155 <font class="comment"> */</font> +<a name="l00156"></a><a class="code" href="classNLNET_1_1CUdpSock.html#z350_0">00156</a> <font class="keywordtype">void</font> CUdpSock::receive( <a class="code" href="types__nl_8h.html#a5">uint8</a> *buffer, <a class="code" href="types__nl_8h.html#a9">uint32</a>& <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> ) +00157 { +00158 <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="classNLNET_1_1CSock.html#n5">_Connected</a> && (buffer!=NULL) ); +00159 +00160 <font class="comment">// Receive incoming message</font> +00161 <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> = ::recv( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, (<font class="keywordtype">char</font>*)buffer, <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> , 0 ); +00162 +00163 <font class="comment">// Check for errors (after setting the address)</font> +00164 <font class="keywordflow">if</font> ( <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> == SOCKET_ERROR ) +00165 { +00166 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Cannot receive data"</font> ); +00167 } +00168 +00169 <a class="code" href="classNLNET_1_1CSock.html#n6">_BytesReceived</a> += <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>; +00170 <font class="keywordflow">if</font> ( _Logging ) +00171 { +00172 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Socket %d received %d bytes from peer %s"</font>, <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>, <a class="code" href="classNLNET_1_1CSock.html#n2">_RemoteAddr</a>.asString().c_str() ); +00173 } +00174 } +00175 +00176 +00177 <font class="comment">/*</font> +00178 <font class="comment"> * Receives data and say who the sender is. (blocking function)</font> +00179 <font class="comment"> */</font> +<a name="l00180"></a><a class="code" href="classNLNET_1_1CUdpSock.html#z350_1">00180</a> <font class="keywordtype">void</font> CUdpSock::receivedFrom( <a class="code" href="types__nl_8h.html#a5">uint8</a> *buffer, <a class="code" href="types__nl_8h.html#a13">uint</a>& <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>, CInetAddress& addr ) +00181 { +00182 <font class="comment">// Receive incoming message</font> +00183 sockaddr_in saddr; +00184 socklen_t saddrlen = <font class="keyword">sizeof</font>(saddr); +00185 +00186 <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> = ::recvfrom( <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, (<font class="keywordtype">char</font>*)buffer, <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> , 0, (sockaddr*)&saddr, &saddrlen ); +00187 +00188 <font class="comment">// If an error occurs, the saddr is not valid</font> +00189 <font class="comment">// When the remote socket is closed, get sender's address to know who is quitting</font> +00190 addr.setSockAddr( &saddr ); +00191 +00192 <font class="comment">// Check for errors (after setting the address)</font> +00193 <font class="keywordflow">if</font> ( <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a> == SOCKET_ERROR ) +00194 { +00195 <font class="keywordflow">throw</font> ESocket( <font class="stringliteral">"Cannot receive data"</font> ); +00196 } +00197 +00198 <a class="code" href="classNLNET_1_1CSock.html#n6">_BytesReceived</a> += <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>; +00199 <font class="keywordflow">if</font> ( _Logging ) +00200 { +00201 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"LNETL0: Socket %d received %d bytes from %s"</font>, <a class="code" href="classNLNET_1_1CSock.html#n0">_Sock</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a230">len</a>, addr.asString().c_str() ); +00202 } +00203 } +00204 +00205 +00206 } <font class="comment">// NLNET</font> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |