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<h1>m_raw_channel.cc</h1><a href="m__raw__channel_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">///</span>
<a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// \file m_raw_channel.cc</span>
<a name="l00003"></a>00003 <span class="comment"></span><span class="comment">/// Mode class for a raw channel</span>
<a name="l00004"></a>00004 <span class="comment"></span><span class="comment">///</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">/*</span>
<a name="l00007"></a>00007 <span class="comment"> Copyright (C) 2005-2011, Net Direct Inc. (http://www.netdirect.ca/)</span>
<a name="l00008"></a>00008 <span class="comment"> Portions Copyright (C) 2010 RealVNC Ltd.</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010 <span class="comment"> This program is free software; you can redistribute it and/or modify</span>
<a name="l00011"></a>00011 <span class="comment"> it under the terms of the GNU General Public License as published by</span>
<a name="l00012"></a>00012 <span class="comment"> the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00013"></a>00013 <span class="comment"> (at your option) any later version.</span>
<a name="l00014"></a>00014 <span class="comment"></span>
<a name="l00015"></a>00015 <span class="comment"> This program is distributed in the hope that it will be useful,</span>
<a name="l00016"></a>00016 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00017"></a>00017 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment"> See the GNU General Public License in the COPYING file at the</span>
<a name="l00020"></a>00020 <span class="comment"> root directory of this project for more details.</span>
<a name="l00021"></a>00021 <span class="comment">*/</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="m__raw__channel_8h.html" title="Mode class for a raw channel.">m_raw_channel.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="semaphore_8h.html" title="Simple class implementing a semaphore using pthreads mutex and condvar.">semaphore.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="data_8h.html" title="Class to deal with pre-saved data files.">data.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="protocol_8h.html" title="USB Blackberry bulk protocol API constants.">protocol.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="protostructs_8h.html" title="USB Blackberry bulk protocol API.">protostructs.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="packet_8h.html" title="Low level protocol packet builder class.">packet.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="endian_8h.html" title="Endian conversion macros.">endian.h</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="error_8h.html" title="Common exception classes for the Barry library.">error.h</a>"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="usbwrap_8h.html" title="USB API wrapper.">usbwrap.h</a>"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="controller_8h.html" title="High level BlackBerry API class.">controller.h</a>"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <stdexcept></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <sstream></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <cstring></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <string></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include "<a class="code" href="protostructs_8h.html" title="USB Blackberry bulk protocol API.">protostructs.h</a>"</span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="preprocessor">#include "debug.h"</span>
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="keyword">namespace </span>Barry { <span class="keyword">namespace </span>Mode {
<a name="l00042"></a>00042 <span class="comment"></span>
<a name="l00043"></a>00043 <span class="comment">///////////////////////////////////////////////////////////////////////////////</span>
<a name="l00044"></a>00044 <span class="comment"></span><span class="comment">// RawChannel SocketDataHandler callback class for data socket</span>
<a name="l00045"></a>00045 <span class="keyword">class </span>RawChannelSocketHandler: <span class="keyword">public</span> SocketRoutingQueue::SocketDataHandler
<a name="l00046"></a>00046 {
<a name="l00047"></a>00047 RawChannel &m_raw_channel;
<a name="l00048"></a>00048 <span class="keyword">public</span>:
<a name="l00049"></a>00049 RawChannelSocketHandler(RawChannel &raw_channel)
<a name="l00050"></a>00050 : m_raw_channel(raw_channel)
<a name="l00051"></a>00051 {}
<a name="l00052"></a>00052 <span class="keyword">virtual</span> <span class="keywordtype">void</span> DataReceived(Data &data)
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 m_raw_channel.HandleReceivedData(data);
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056 <span class="keyword">virtual</span> <span class="keywordtype">void</span> Error(<a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a> &error)
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 SocketDataHandler::Error(error);
<a name="l00059"></a>00059 m_raw_channel.HandleError(error);
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061 <span class="keyword">virtual</span> ~RawChannelSocketHandler()
<a name="l00062"></a>00062 {}
<a name="l00063"></a>00063 };
<a name="l00064"></a>00064 <span class="comment"></span>
<a name="l00065"></a>00065 <span class="comment">///////////////////////////////////////////////////////////////////////////////</span>
<a name="l00066"></a>00066 <span class="comment"></span><span class="comment">// RawChannel SocketDataHandler callback class for zero socket</span>
<a name="l00067"></a>00067 <span class="keyword">class </span>RawChannelZeroSocketHandler: <span class="keyword">public</span> SocketRoutingQueue::SocketDataHandler
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 RawChannel &m_raw_channel;
<a name="l00070"></a>00070 <span class="keyword">public</span>:
<a name="l00071"></a>00071 RawChannelZeroSocketHandler(RawChannel &raw_channel)
<a name="l00072"></a>00072 : m_raw_channel(raw_channel)
<a name="l00073"></a>00073 {}
<a name="l00074"></a>00074 <span class="keyword">virtual</span> <span class="keywordtype">void</span> DataReceived(Data &data)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 m_raw_channel.HandleReceivedZeroPacket(data);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 <span class="keyword">virtual</span> <span class="keywordtype">void</span> Error(<a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a> &error)
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080 SocketDataHandler::Error(error);
<a name="l00081"></a>00081 m_raw_channel.HandleError(error);
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 <span class="keyword">virtual</span> ~RawChannelZeroSocketHandler()
<a name="l00084"></a>00084 {}
<a name="l00085"></a>00085 };
<a name="l00086"></a>00086 <span class="comment"></span>
<a name="l00087"></a>00087 <span class="comment">///////////////////////////////////////////////////////////////////////////////</span>
<a name="l00088"></a>00088 <span class="comment"></span><span class="comment">// RawChannel Mode class</span>
<a name="l00089"></a>00089
<a name="l00090"></a>00090 RawChannel::RawChannel(Controller &con, RawChannelDataCallback &callback)
<a name="l00091"></a>00091 : Mode(con, Controller::RawChannel)
<a name="l00092"></a>00092 , m_mutex_valid(false)
<a name="l00093"></a>00093 , m_cv_valid(false)
<a name="l00094"></a>00094 , m_semaphore(NULL)
<a name="l00095"></a>00095 , m_callback(&callback)
<a name="l00096"></a>00096 , m_send_buffer(NULL)
<a name="l00097"></a>00097 , m_zero_registered(false)
<a name="l00098"></a>00098 , m_pending_error(NULL)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 CheckQueueAvailable();
<a name="l00101"></a>00101 InitBuffer();
<a name="l00102"></a>00102 InitSemaphore();
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105 RawChannel::RawChannel(Controller &con)
<a name="l00106"></a>00106 : Mode(con, Controller::RawChannel)
<a name="l00107"></a>00107 , m_mutex_valid(false)
<a name="l00108"></a>00108 , m_cv_valid(false)
<a name="l00109"></a>00109 , m_semaphore(NULL)
<a name="l00110"></a>00110 , m_callback(NULL)
<a name="l00111"></a>00111 , m_send_buffer(NULL)
<a name="l00112"></a>00112 , m_zero_registered(false)
<a name="l00113"></a>00113 , m_pending_error(NULL)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 CheckQueueAvailable();
<a name="l00116"></a>00116 InitBuffer();
<a name="l00117"></a>00117 InitSemaphore();
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="keywordtype">void</span> RawChannel::CheckQueueAvailable()
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 <span class="keywordflow">if</span>( !m_con.m_queue ) {
<a name="l00123"></a>00123 <span class="keywordflow">throw</span> <a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a>(<span class="stringliteral">"RawChannel: No routing queue set in controller"</span>);
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keywordtype">void</span> RawChannel::InitBuffer()
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 m_send_buffer = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[SB_CHANNELPACKET_HEADER_SIZE + SB_CHANNELPACKET_MAX_DATA_SIZE];
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordtype">void</span> RawChannel::InitSemaphore()
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 <span class="comment">// Create the thread synchronization objects</span>
<a name="l00135"></a>00135 <span class="keywordflow">if</span>( pthread_mutex_init(&m_mutex, NULL) ) {
<a name="l00136"></a>00136 <span class="keywordflow">throw</span> <a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a>(<span class="stringliteral">"Failed to create mutex"</span>);
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 m_mutex_valid = <span class="keyword">true</span>;
<a name="l00139"></a>00139 <span class="keywordflow">if</span>( pthread_cond_init(&m_cv, NULL) ) {
<a name="l00140"></a>00140 <span class="keywordflow">throw</span> <a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a>(<span class="stringliteral">"Failed to create condvar"</span>);
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 m_cv_valid = <span class="keyword">true</span>;
<a name="l00143"></a>00143 m_semaphore = <span class="keyword">new</span> semaphore(m_mutex, m_cv);
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145
<a name="l00146"></a>00146 RawChannel::~RawChannel()
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 UnregisterZeroSocketInterest();
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keyword">delete</span>[] m_send_buffer;
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="keywordflow">if</span>( m_mutex_valid ) {
<a name="l00153"></a>00153 pthread_mutex_destroy(&m_mutex);
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155 <span class="keywordflow">if</span>( m_cv_valid ) {
<a name="l00156"></a>00156 pthread_cond_destroy(&m_cv);
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158 <span class="keyword">delete</span> m_semaphore;
<a name="l00159"></a>00159 <span class="keyword">delete</span> m_pending_error;
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="keywordtype">void</span> RawChannel::OnOpen()
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 <span class="comment">// Enable sequence packets so that DataSendAck callback and close can be</span>
<a name="l00165"></a>00165 <span class="comment">// implemented</span>
<a name="l00166"></a>00166 m_zero_registered = <span class="keyword">true</span>;
<a name="l00167"></a>00167 m_socket->HideSequencePacket(<span class="keyword">false</span>);
<a name="l00168"></a>00168 SocketRoutingQueue::SocketDataHandlerPtr zeroCallback;
<a name="l00169"></a>00169 zeroCallback.reset(<span class="keyword">new</span> RawChannelZeroSocketHandler(*<span class="keyword">this</span>));
<a name="l00170"></a>00170 m_con.m_queue->RegisterInterest(0, zeroCallback);
<a name="l00171"></a>00171 <span class="comment">// Get socket data packets routed to this class as well if a</span>
<a name="l00172"></a>00172 <span class="comment">// callback was provided, otherside just get the data packets</span>
<a name="l00173"></a>00173 <span class="comment">// placed into a queue for the socket.</span>
<a name="l00174"></a>00174 <span class="keywordflow">if</span>( m_callback ) {
<a name="l00175"></a>00175 SocketRoutingQueue::SocketDataHandlerPtr callback;
<a name="l00176"></a>00176 callback.reset(<span class="keyword">new</span> RawChannelSocketHandler(*<span class="keyword">this</span>));
<a name="l00177"></a>00177 m_socket->RegisterInterest(callback);
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179 <span class="keywordflow">else</span> {
<a name="l00180"></a>00180 SocketRoutingQueue::SocketDataHandlerPtr nullCallback;
<a name="l00181"></a>00181 m_socket->RegisterInterest(nullCallback);
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <span class="keywordtype">void</span> RawChannel::HandleReceivedZeroPacket(Data &data)
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 Protocol::CheckSize(data, SB_PACKET_HEADER_SIZE);
<a name="l00189"></a>00189 MAKE_PACKETPTR_BUF(packet, data.GetData());
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="keywordflow">if</span>( packet->socket != 0 ) {
<a name="l00192"></a>00192 UnregisterZeroSocketInterest();
<a name="l00193"></a>00193 SetPendingError(<span class="stringliteral">"RawChannel: Got packet not for socket-zero"</span>);
<a name="l00194"></a>00194 m_semaphore->Signal();
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="keywordflow">switch</span>( btohs(packet->command) )
<a name="l00198"></a>00198 {
<a name="l00199"></a>00199 <span class="keywordflow">case</span> SB_COMMAND_SEQUENCE_HANDSHAKE:
<a name="l00200"></a>00200 m_semaphore->Signal();
<a name="l00201"></a>00201 <span class="keywordflow">break</span>;
<a name="l00202"></a>00202 <span class="keywordflow">case</span> SB_COMMAND_CLOSE_SOCKET:
<a name="l00203"></a>00203 <span class="keywordflow">case</span> SB_COMMAND_REMOTE_CLOSE_SOCKET:
<a name="l00204"></a>00204 <span class="comment">// Stop listening to socket 0 messages</span>
<a name="l00205"></a>00205 <span class="comment">// so that socket close work.</span>
<a name="l00206"></a>00206 UnregisterZeroSocketInterest();
<a name="l00207"></a>00207 <span class="keywordflow">if</span>( m_callback ) {
<a name="l00208"></a>00208 m_callback->ChannelClose();
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210
<a name="l00211"></a>00211 m_semaphore->Signal();
<a name="l00212"></a>00212 <span class="keywordflow">break</span>;
<a name="l00213"></a>00213 <span class="keywordflow">default</span>:
<a name="l00214"></a>00214 UnregisterZeroSocketInterest();
<a name="l00215"></a>00215 <span class="keywordflow">if</span>( m_callback ) {
<a name="l00216"></a>00216 m_callback->ChannelError(<span class="stringliteral">"RawChannel: Got unexpected socket zero packet"</span>);
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218 <span class="keywordflow">else</span> {
<a name="l00219"></a>00219 SetPendingError(<span class="stringliteral">"RawChannel: Got unexpected socket zero packet"</span>);
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221 m_semaphore->Signal();
<a name="l00222"></a>00222 <span class="keywordflow">break</span>;
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224
<a name="l00225"></a>00225 }
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="keywordtype">void</span> RawChannel::HandleReceivedData(Data &data)
<a name="l00228"></a>00228 {
<a name="l00229"></a>00229 <span class="comment">// Only ever called in callback mode</span>
<a name="l00230"></a>00230 ValidateDataPacket(data);
<a name="l00231"></a>00231 MAKE_CHANNELPACKETPTR_BUF(packet, data.GetData());
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="comment">// Should be a socket packet for us, so remove packet headers</span>
<a name="l00234"></a>00234 Data partial(packet->u.data, data.GetSize() - SB_CHANNELPACKET_HEADER_SIZE);
<a name="l00235"></a>00235 <span class="keywordflow">if</span>( m_callback ) {
<a name="l00236"></a>00236 m_callback->DataReceived(partial);
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238 <span class="keywordflow">else</span> {
<a name="l00239"></a>00239 SetPendingError(<span class="stringliteral">"RawChannel: Received data to handle when in non-callback mode"</span>);
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="keywordtype">void</span> RawChannel::HandleError(<a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a> &error)
<a name="l00244"></a>00244 {
<a name="l00245"></a>00245 std::ostringstream errorOss;
<a name="l00246"></a>00246 errorOss << <span class="stringliteral">"RawChannel: Socket error received, what: "</span> << error.what();
<a name="l00247"></a>00247
<a name="l00248"></a>00248 <span class="keywordflow">if</span>( m_callback ) {
<a name="l00249"></a>00249 m_callback->ChannelError(errorOss.str().c_str());
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251 <span class="keywordflow">else</span> {
<a name="l00252"></a>00252 SetPendingError(errorOss.str().c_str());
<a name="l00253"></a>00253 }
<a name="l00254"></a>00254 m_semaphore->Signal();
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="keywordtype">void</span> RawChannel::UnregisterZeroSocketInterest()
<a name="l00258"></a>00258 {
<a name="l00259"></a>00259 <span class="keywordflow">if</span>( m_zero_registered ) {
<a name="l00260"></a>00260 m_con.m_queue->UnregisterInterest(0);
<a name="l00261"></a>00261 m_socket->HideSequencePacket(<span class="keyword">true</span>);
<a name="l00262"></a>00262 m_zero_registered = <span class="keyword">false</span>;
<a name="l00263"></a>00263 }
<a name="l00264"></a>00264 }
<a name="l00265"></a>00265
<a name="l00266"></a>00266 <span class="keywordtype">void</span> RawChannel::SetPendingError(<span class="keyword">const</span> <span class="keywordtype">char</span> *msg)
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268 <span class="keywordflow">if</span>( !m_pending_error ) {
<a name="l00269"></a>00269 m_pending_error = <span class="keyword">new</span> std::string(msg);
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271 }
<a name="l00272"></a>00272 <span class="comment"></span>
<a name="l00273"></a>00273 <span class="comment">///////////////////////////////////////////////////////////////////////////////</span>
<a name="l00274"></a>00274 <span class="comment"></span><span class="comment">// public API</span>
<a name="l00275"></a>00275
<a name="l00276"></a>00276 <span class="keywordtype">void</span> RawChannel::Send(Data &data, <span class="keywordtype">int</span> timeout)
<a name="l00277"></a>00277 {
<a name="l00278"></a>00278 <span class="keywordtype">size_t</span> packetSize = SB_CHANNELPACKET_HEADER_SIZE + data.GetSize();
<a name="l00279"></a>00279
<a name="l00280"></a>00280 <span class="keywordflow">if</span>( packetSize > SB_CHANNELPACKET_HEADER_SIZE + SB_CHANNELPACKET_MAX_DATA_SIZE ) {
<a name="l00281"></a>00281 <span class="keywordflow">throw</span> <a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a>(<span class="stringliteral">"RawChannel: send data size larger than MaximumPacketSize"</span>);
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="comment">// setup header and copy data in</span>
<a name="l00285"></a>00285 MAKE_CHANNELPACKETPTR_BUF(packet, m_send_buffer);
<a name="l00286"></a>00286 packet->socket = htobs(m_socket->GetSocket());
<a name="l00287"></a>00287 packet->size = htobs(packetSize);
<a name="l00288"></a>00288 std::memcpy(packet->u.data, data.GetData(), data.GetSize());
<a name="l00289"></a>00289
<a name="l00290"></a>00290 Data toSend(m_send_buffer, packetSize);
<a name="l00291"></a>00291 m_socket->Send(toSend, timeout);
<a name="l00292"></a>00292 m_semaphore->WaitForSignal();
<a name="l00293"></a>00293 <span class="keywordflow">if</span>( m_pending_error ) {
<a name="l00294"></a>00294 <span class="keywordflow">throw</span> <a class="code" href="classBarry_1_1Error.html" title="The base class for any future derived exceptions.">Barry::Error</a>(*m_pending_error);
<a name="l00295"></a>00295 }
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <span class="keywordtype">void</span> RawChannel::Receive(Data &data,<span class="keywordtype">int</span> timeout)
<a name="l00299"></a>00299 {
<a name="l00300"></a>00300 <span class="keywordflow">if</span>( m_callback ) {
<a name="l00301"></a>00301 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"RawChannel: Receive called when channel was created with a callback"</span>);
<a name="l00302"></a>00302 }
<a name="l00303"></a>00303 <span class="comment">// Receive into a buffer</span>
<a name="l00304"></a>00304 m_socket->Receive(m_receive_data, timeout);
<a name="l00305"></a>00305 <span class="comment">// Then transfer across, skipping the header</span>
<a name="l00306"></a>00306 ValidateDataPacket(m_receive_data);
<a name="l00307"></a>00307 MAKE_CHANNELPACKETPTR_BUF(packet, m_receive_data.GetData());
<a name="l00308"></a>00308
<a name="l00309"></a>00309 <span class="keywordtype">size_t</span> len = packet->size - SB_CHANNELPACKET_HEADER_SIZE;
<a name="l00310"></a>00310 memcpy(data.GetBuffer(), packet->u.data, len);
<a name="l00311"></a>00311 data.ReleaseBuffer(len);
<a name="l00312"></a>00312
<a name="l00313"></a>00313 }
<a name="l00314"></a>00314
<a name="l00315"></a>00315 <span class="keywordtype">void</span> RawChannel::ValidateDataPacket(Data &data)
<a name="l00316"></a>00316 {
<a name="l00317"></a>00317 Protocol::CheckSize(data, SB_CHANNELPACKET_HEADER_SIZE);
<a name="l00318"></a>00318 MAKE_CHANNELPACKETPTR_BUF(packet, data.GetData());
<a name="l00319"></a>00319 <span class="keywordflow">if</span>( packet->size != data.GetSize() ) {
<a name="l00320"></a>00320
<a name="l00321"></a>00321 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"RawChannel: Data size doesn't match packet size"</span>);
<a name="l00322"></a>00322 }
<a name="l00323"></a>00323 }
<a name="l00324"></a>00324
<a name="l00325"></a>00325 <span class="keywordtype">size_t</span> RawChannel::MaximumSendSize()
<a name="l00326"></a>00326 {
<a name="l00327"></a>00327 <span class="keywordflow">return</span> SB_CHANNELPACKET_MAX_DATA_SIZE;
<a name="l00328"></a>00328 }
<a name="l00329"></a>00329
<a name="l00330"></a>00330 }} <span class="comment">// namespace Barry::Mode</span>
</pre></div></div>
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