Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_e_c_h_o_e_n_g_8_c_p_p_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Networking/TcpIp/EchoClientEngine/ECHOENG.CPP</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00003"></a>00003 <span class="comment">// All rights reserved.</span>
<a name="l00004"></a>00004 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00005"></a>00005 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00006"></a>00006 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00007"></a>00007 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// Initial Contributors:</span>
<a name="l00010"></a>00010 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00011"></a>00011 <span class="comment">//</span>
<a name="l00012"></a>00012 <span class="comment">// Contributors:</span>
<a name="l00013"></a>00013 <span class="comment">//</span>
<a name="l00014"></a>00014 <span class="comment">// Description:</span>
<a name="l00015"></a>00015 <span class="comment">// Defines CEchoEngine, CEchoRead, CEchoWrite, CTimeOutTimer</span>
<a name="l00016"></a>00016 <span class="comment">//</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="preprocessor">#include "ECHOENG.H"</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="comment">// 50 seconds time-out</span>
<a name="l00021"></a>00021 <span class="keyword">const</span> TInt KTimeOut = 50000000;
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="comment">/*</span>
<a name="l00024"></a>00024 <span class="comment"> CEchoEngine: main engine class for connection and shutdown</span>
<a name="l00025"></a>00025 <span class="comment">*/</span>
<a name="l00026"></a>00026 EXPORT_C CEchoEngine::CEchoEngine() : CActive(EPriorityStandard)
<a name="l00027"></a>00027 {
<a name="l00028"></a>00028 }
<a name="l00029"></a>00029
<a name="l00030"></a>00030 EXPORT_C <a class="code" href="class_c_echo_engine.html">CEchoEngine</a>* CEchoEngine::NewL(<a class="code" href="class_m_u_i_notify.html">MUINotify</a>* aConsole)
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 <a class="code" href="class_c_echo_engine.html">CEchoEngine</a>* <span class="keyword">self</span> = NewLC(aConsole);
<a name="l00033"></a>00033 CleanupStack::Pop();
<a name="l00034"></a>00034 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00035"></a>00035 }
<a name="l00036"></a>00036
<a name="l00037"></a>00037 EXPORT_C <a class="code" href="class_c_echo_engine.html">CEchoEngine</a>* CEchoEngine::NewLC(<a class="code" href="class_m_u_i_notify.html">MUINotify</a>* aConsole)
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039 <a class="code" href="class_c_echo_engine.html">CEchoEngine</a>* <span class="keyword">self</span> = <span class="keyword">new</span>(ELeave) <a class="code" href="class_c_echo_engine.html">CEchoEngine</a>;
<a name="l00040"></a>00040 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00041"></a>00041 <span class="keyword">self</span>->ConstructL(aConsole);
<a name="l00042"></a>00042 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00043"></a>00043 }
<a name="l00044"></a>00044 <span class="comment">/*</span>
<a name="l00045"></a>00045 <span class="comment"> Constructs object, and opens a socket </span>
<a name="l00046"></a>00046 <span class="comment">*/</span>
<a name="l00047"></a>00047 EXPORT_C <span class="keywordtype">void</span> CEchoEngine::ConstructL(<a class="code" href="class_m_u_i_notify.html">MUINotify</a>* aConsole)
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 iConsole = aConsole;
<a name="l00050"></a>00050 iEngineStatus = EComplete;
<a name="l00051"></a>00051
<a name="l00052"></a>00052 iTimeOut = KTimeOut;
<a name="l00053"></a>00053 iTimer = <a class="code" href="class_c_time_out_timer.html#a4cc1f595fc6c8b99ccaef6eb42cdcd7a">CTimeOutTimer::NewL</a>(EPriorityHigh, *<span class="keyword">this</span>);
<a name="l00054"></a>00054 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">// Open channel to Socket Server</span>
<a name="l00057"></a>00057 User::LeaveIfError(iSocketServ.Connect());
<a name="l00058"></a>00058 <span class="comment">// Open a TCP socket</span>
<a name="l00059"></a>00059 User::LeaveIfError(iEchoSocket.Open(iSocketServ, KAfInet, KSockStream, KProtocolInetTcp));
<a name="l00060"></a>00060
<a name="l00061"></a>00061 iEchoRead = <span class="keyword">new</span> <a class="code" href="class_c_echo_read.html">CEchoRead</a>(&iEchoSocket, aConsole);
<a name="l00062"></a>00062 iEchoWrite = CEchoWrite::NewL(&iEchoSocket, aConsole);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keywordtype">void</span> CEchoEngine::DoCancel()
<a name="l00066"></a>00066 <span class="comment">// Cancel asychronous requests</span>
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 iTimer->Cancel();
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">// Cancel appropriate request to socket</span>
<a name="l00071"></a>00071 <span class="keywordflow">switch</span> (iEngineStatus)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="keywordflow">case</span> EConnecting:
<a name="l00074"></a>00074 iEchoSocket.CancelConnect();
<a name="l00075"></a>00075 <span class="keywordflow">break</span>;
<a name="l00076"></a>00076 <span class="keywordflow">case</span> ELookingUp:
<a name="l00077"></a>00077 <span class="comment">// Cancel look up attempt</span>
<a name="l00078"></a>00078 iResolver.Cancel();
<a name="l00079"></a>00079 iResolver.Close();
<a name="l00080"></a>00080 <span class="keywordflow">break</span>;
<a name="l00081"></a>00081 <span class="keywordflow">default</span>:;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084 <span class="comment">/*</span>
<a name="l00085"></a>00085 <span class="comment"> Connect to an Echo Socket by IP address </span>
<a name="l00086"></a>00086 <span class="comment">*/</span>
<a name="l00087"></a>00087 EXPORT_C <span class="keywordtype">void</span> CEchoEngine::ConnectTo(TUint32 aAddr)
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 <span class="comment">// port number for test purposes - may need to be changed</span>
<a name="l00090"></a>00090 iAddress.SetPort(7);
<a name="l00091"></a>00091 iAddress.SetAddress(aAddr);
<a name="l00092"></a>00092 iEchoSocket.Connect(iAddress, iStatus);
<a name="l00093"></a>00093 iEngineStatus = EConnecting;
<a name="l00094"></a>00094 SetActive();
<a name="l00095"></a>00095 iTimer->After(iTimeOut);
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00098"></a>00098 EXPORT_C <span class="keywordtype">void</span> CEchoEngine::ConnectL(<span class="keyword">const</span> TDesC& aServerName)
<a name="l00099"></a>00099 <span class="comment">// Connect to an Echo socket by hostname</span>
<a name="l00100"></a>00100 {
<a name="l00101"></a>00101 <span class="comment">// Initiate DNS</span>
<a name="l00102"></a>00102 User::LeaveIfError(iResolver.Open(iSocketServ, KAfInet, KProtocolInetUdp));
<a name="l00103"></a>00103 <span class="comment">// DNS request for name resolution</span>
<a name="l00104"></a>00104 iResolver.GetByName(aServerName, iNameEntry, iStatus);
<a name="l00105"></a>00105
<a name="l00106"></a>00106 iEngineStatus=ELookingUp;
<a name="l00107"></a>00107 <span class="comment">// Request time out</span>
<a name="l00108"></a>00108 iTimer->After(iTimeOut);
<a name="l00109"></a>00109 SetActive();
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 EXPORT_C <span class="keywordtype">void</span> CEchoEngine::TestGetByAddrL(TUint32 aAddr)
<a name="l00113"></a>00113 <span class="comment">// Looks up hostname, and then connects to an Echo socket </span>
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 <span class="comment">// Initiate DNS</span>
<a name="l00116"></a>00116 User::LeaveIfError(iResolver.Open(iSocketServ, KAfInet, KProtocolInetUdp));
<a name="l00117"></a>00117 <span class="comment">// DNS request for address lookup</span>
<a name="l00118"></a>00118 iAddress.SetAddress(aAddr);
<a name="l00119"></a>00119 iResolver.GetByAddress(iAddress, iNameEntry, iStatus);
<a name="l00120"></a>00120
<a name="l00121"></a>00121 iEngineStatus=ELookingUp;
<a name="l00122"></a>00122 <span class="comment">// Request time out</span>
<a name="l00123"></a>00123 iTimer->After(iTimeOut);
<a name="l00124"></a>00124 SetActive();
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 <span class="comment">/*</span>
<a name="l00127"></a>00127 <span class="comment">Exported function wrapping call to CEchoWrite: writes character to socket</span>
<a name="l00128"></a>00128 <span class="comment">*/</span>
<a name="l00129"></a>00129 EXPORT_C <span class="keywordtype">void</span> CEchoEngine::Write(TChar aChar)
<a name="l00130"></a>00130 {
<a name="l00131"></a>00131 <span class="comment">/* </span>
<a name="l00132"></a>00132 <span class="comment"> In this simple implementation, if iEchoWrite is already active, ignore call.</span>
<a name="l00133"></a>00133 <span class="comment"> Full implementation would buffer data </span>
<a name="l00134"></a>00134 <span class="comment"> */</span>
<a name="l00135"></a>00135 <span class="keywordflow">if</span> ((iEngineStatus == EConnected) && !iEchoWrite->IsActive())
<a name="l00136"></a>00136 iEchoWrite->IssueWrite(aChar);
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 <span class="comment">/*</span>
<a name="l00139"></a>00139 <span class="comment">Exported function wrapping call to CEchoRead: reads character from socket</span>
<a name="l00140"></a>00140 <span class="comment">*/</span>
<a name="l00141"></a>00141 EXPORT_C <span class="keywordtype">void</span> CEchoEngine::Read()
<a name="l00142"></a>00142 {
<a name="l00143"></a>00143 <span class="keywordflow">if</span> ((iEngineStatus == EConnected)&&(!iEchoRead->IsActive()))
<a name="l00144"></a>00144 iEchoRead->IssueRead();
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="comment">/*</span>
<a name="l00148"></a>00148 <span class="comment"> Active object request complete handler.</span>
<a name="l00149"></a>00149 <span class="comment"> iEngineStatus flags what request was made, so its</span>
<a name="l00150"></a>00150 <span class="comment"> completion can be handled appropriately</span>
<a name="l00151"></a>00151 <span class="comment">*/</span>
<a name="l00152"></a>00152 <span class="keywordtype">void</span> CEchoEngine::RunL()
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154 <span class="comment">// Cancel TimeOut timer before completion</span>
<a name="l00155"></a>00155 iTimer->Cancel();
<a name="l00156"></a>00156 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConnecting,<span class="stringliteral">"\n<CEchoEngine> Connecting\n"</span>);
<a name="l00157"></a>00157 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConnectionFailed,<span class="stringliteral">"\n<CEchoEngine> Connection failed"</span>);
<a name="l00158"></a>00158 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KDNSFailed,<span class="stringliteral">"\n<CEchoEngine> DNS lookup failed"</span>);
<a name="l00159"></a>00159 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTimedOut,<span class="stringliteral">"\n<CEchoEngine> Timed out\n"</span>);
<a name="l00160"></a>00160 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KDomainName,<span class="stringliteral">"\nDomain name = "</span>);
<a name="l00161"></a>00161 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KIPAddress,<span class="stringliteral">"\nIP address = "</span>);
<a name="l00162"></a>00162
<a name="l00163"></a>00163 TBuf<15> ipAddr;
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordflow">switch</span>(iEngineStatus)
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167 <span class="keywordflow">case</span> EConnecting:
<a name="l00168"></a>00168 <span class="comment">// IP connection request</span>
<a name="l00169"></a>00169 <span class="keywordflow">if</span> (iStatus == KErrNone)
<a name="l00170"></a>00170 <span class="comment">// Connection completed sucessfully</span>
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 iConsole->PrintNotify(KConnecting);
<a name="l00173"></a>00173 iEngineStatus = EConnected;
<a name="l00174"></a>00174 <span class="comment">//Start CEchoRead Active object </span>
<a name="l00175"></a>00175 Read();
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177 <span class="keywordflow">else</span>
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 iEngineStatus = EConnectFailed;
<a name="l00180"></a>00180 iConsole->ErrorNotifyL(KConnectionFailed, iStatus.Int());
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 <span class="keywordflow">break</span>;
<a name="l00183"></a>00183 <span class="keywordflow">case</span> ETimedOut:
<a name="l00184"></a>00184 <span class="comment">// Timeout request</span>
<a name="l00185"></a>00185 iConsole->ErrorNotifyL(KTimedOut, KErrTimedOut);
<a name="l00186"></a>00186 <span class="keywordflow">break</span>;
<a name="l00187"></a>00187 <span class="keywordflow">case</span> ELookingUp:
<a name="l00188"></a>00188 iResolver.Close();
<a name="l00189"></a>00189 <span class="keywordflow">if</span> (iStatus == KErrNone)
<a name="l00190"></a>00190 <span class="comment">// DNS look up successful</span>
<a name="l00191"></a>00191 {
<a name="l00192"></a>00192 iNameRecord = iNameEntry();
<a name="l00193"></a>00193 <span class="comment">// Extract domain name and IP address from name record</span>
<a name="l00194"></a>00194 iConsole->PrintNotify(KDomainName);
<a name="l00195"></a>00195 iConsole->PrintNotify(iNameRecord.iName);
<a name="l00196"></a>00196 TInetAddr::Cast(iNameRecord.iAddr).Output(ipAddr);
<a name="l00197"></a>00197 iConsole->PrintNotify(KIPAddress);
<a name="l00198"></a>00198 iConsole->PrintNotify(ipAddr);
<a name="l00199"></a>00199 <span class="comment">// And connect to the IP address</span>
<a name="l00200"></a>00200 ConnectTo(TInetAddr::Cast(iNameRecord.iAddr).Address());
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202 <span class="keywordflow">else</span>
<a name="l00203"></a>00203 {
<a name="l00204"></a>00204 iStatus = ELookUpFailed;
<a name="l00205"></a>00205 iConsole->ErrorNotifyL(KDNSFailed, iStatus.Int());
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207 <span class="keywordflow">break</span>;
<a name="l00208"></a>00208
<a name="l00209"></a>00209 <span class="keywordflow">default</span>:;
<a name="l00210"></a>00210 };
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 CEchoEngine::~CEchoEngine()
<a name="l00214"></a>00214 {
<a name="l00215"></a>00215 <span class="keyword">delete</span> iEchoRead;
<a name="l00216"></a>00216 <span class="keyword">delete</span> iEchoWrite;
<a name="l00217"></a>00217 <span class="keyword">delete</span> iTimer;
<a name="l00218"></a>00218 iEchoSocket.Close();
<a name="l00219"></a>00219 iSocketServ.Close();
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="comment">/*</span>
<a name="l00223"></a>00223 <span class="comment"> Implements MTimeOutNotify: called when timeout expired</span>
<a name="l00224"></a>00224 <span class="comment">*/</span>
<a name="l00225"></a>00225 <span class="keywordtype">void</span> CEchoEngine::TimerExpired()
<a name="l00226"></a>00226 {
<a name="l00227"></a>00227 Cancel();
<a name="l00228"></a>00228 iEngineStatus = ETimedOut;
<a name="l00229"></a>00229 TRequestStatus* p=&iStatus;
<a name="l00230"></a>00230 SetActive();
<a name="l00231"></a>00231 User::RequestComplete(p, ETimedOut);
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="comment">/*</span>
<a name="l00235"></a>00235 <span class="comment"> Shutdown connection request</span>
<a name="l00236"></a>00236 <span class="comment">*/</span>
<a name="l00237"></a>00237 EXPORT_C <span class="keywordtype">void</span> CEchoEngine::Stop()
<a name="l00238"></a>00238 {
<a name="l00239"></a>00239 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KETerminate,<span class="stringliteral">"\n<CEchoEngine> Terminating\n"</span>);
<a name="l00240"></a>00240
<a name="l00241"></a>00241 iConsole->PrintNotify(KETerminate);
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="keywordflow">switch</span> (iEngineStatus)
<a name="l00244"></a>00244 {
<a name="l00245"></a>00245 <span class="keywordflow">case</span> EConnected:
<a name="l00246"></a>00246 <span class="comment">// Stop live connection</span>
<a name="l00247"></a>00247 iEchoRead->Cancel();
<a name="l00248"></a>00248 iEchoWrite->Cancel();
<a name="l00249"></a>00249 <span class="keywordflow">break</span>;
<a name="l00250"></a>00250 <span class="keywordflow">case</span> EConnecting:
<a name="l00251"></a>00251 <span class="keywordflow">case</span> ELookingUp:
<a name="l00252"></a>00252 <span class="comment">// if request to CEchoEngine, then stop it</span>
<a name="l00253"></a>00253 Cancel();
<a name="l00254"></a>00254 <span class="keywordflow">break</span>;
<a name="l00255"></a>00255 <span class="keywordflow">default</span>:;
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257 }
<a name="l00258"></a>00258
<a name="l00259"></a>00259
<a name="l00260"></a>00260 CEchoRead::CEchoRead(RSocket* aSocket, <a class="code" href="class_m_u_i_notify.html">MUINotify</a>* aConsole)
<a name="l00261"></a>00261 :CActive(EPriorityStandard), iEchoSocket(aSocket), iConsole(aConsole)
<a name="l00262"></a>00262 {
<a name="l00263"></a>00263 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00264"></a>00264 }
<a name="l00265"></a>00265
<a name="l00266"></a>00266
<a name="l00267"></a>00267 <span class="comment">/*</span>
<a name="l00268"></a>00268 <span class="comment"> Cancel asychronous read request</span>
<a name="l00269"></a>00269 <span class="comment">*/</span>
<a name="l00270"></a>00270 <span class="keywordtype">void</span> CEchoRead::DoCancel()
<a name="l00271"></a>00271 {
<a name="l00272"></a>00272 iEchoSocket->CancelRead();
<a name="l00273"></a>00273 }
<a name="l00274"></a>00274 <span class="comment">/*</span>
<a name="l00275"></a>00275 <span class="comment"> Active object request complete handler</span>
<a name="l00276"></a>00276 <span class="comment">*/</span>
<a name="l00277"></a>00277 <span class="keywordtype">void</span> CEchoRead::RunL()
<a name="l00278"></a>00278 {
<a name="l00279"></a>00279 <span class="keywordflow">if</span> (iStatus == KErrNone)
<a name="l00280"></a>00280 <span class="comment">// Character has been read from socket</span>
<a name="l00281"></a>00281 {
<a name="l00282"></a>00282 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KDot,<span class="stringliteral">"."</span>);
<a name="l00283"></a>00283 iConsole->PrintNotify(KDot);
<a name="l00284"></a>00284 TBuf16<1> Buffer;
<a name="l00285"></a>00285 Buffer.Copy(iBuffer);
<a name="l00286"></a>00286 iConsole->PrintNotify(Buffer);
<a name="l00287"></a>00287 IssueRead();
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289 <span class="keywordflow">else</span>
<a name="l00290"></a>00290 {
<a name="l00291"></a>00291 <span class="comment">// Error: pass it up to user interface</span>
<a name="l00292"></a>00292 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCEchoReadError,<span class="stringliteral">"\nCEchoRead error"</span>);
<a name="l00293"></a>00293 iConsole->ErrorNotifyL(KCEchoReadError, iStatus.Int());
<a name="l00294"></a>00294 }
<a name="l00295"></a>00295 }
<a name="l00296"></a>00296 <span class="comment">/*</span>
<a name="l00297"></a>00297 <span class="comment"> Read data from a stream socket</span>
<a name="l00298"></a>00298 <span class="comment">*/</span>
<a name="l00299"></a>00299 <span class="keywordtype">void</span> CEchoRead::IssueRead()
<a name="l00300"></a>00300 {
<a name="l00301"></a>00301 <span class="keywordflow">if</span> (!IsActive())
<a name="l00302"></a>00302 {
<a name="l00303"></a>00303 iEchoSocket->Recv(iBuffer, 0, iStatus);
<a name="l00304"></a>00304 SetActive();
<a name="l00305"></a>00305 }
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307 <span class="comment">/*</span>
<a name="l00308"></a>00308 <span class="comment"> This function is not actually used -</span>
<a name="l00309"></a>00309 <span class="comment"> It shows how to read data from a datagram socket </span>
<a name="l00310"></a>00310 <span class="comment">*/</span>
<a name="l00311"></a>00311 <span class="keywordtype">void</span> CEchoRead::IssueRecvFrom(TInetAddr &aAddr)
<a name="l00312"></a>00312
<a name="l00313"></a>00313 {
<a name="l00314"></a>00314 iEchoSocket->RecvFrom(iBuffer,aAddr,NULL,iStatus);
<a name="l00315"></a>00315 SetActive();
<a name="l00316"></a>00316 };
<a name="l00317"></a>00317
<a name="l00318"></a>00318 <span class="comment">/*</span>
<a name="l00319"></a>00319 <span class="comment"> CEchoWrite: active object wrapping comms write requests</span>
<a name="l00320"></a>00320 <span class="comment">*/</span>
<a name="l00321"></a>00321 CEchoWrite::CEchoWrite() : CActive(EPriorityStandard)
<a name="l00322"></a>00322 {
<a name="l00323"></a>00323
<a name="l00324"></a>00324 };
<a name="l00325"></a>00325
<a name="l00326"></a>00326 <a class="code" href="class_c_echo_write.html">CEchoWrite</a>* CEchoWrite::NewL(RSocket* aSocket, <a class="code" href="class_m_u_i_notify.html">MUINotify</a>* aConsole)
<a name="l00327"></a>00327 {
<a name="l00328"></a>00328 <a class="code" href="class_c_echo_write.html">CEchoWrite</a>* <span class="keyword">self</span> = NewLC(aSocket, aConsole);
<a name="l00329"></a>00329 CleanupStack::Pop();
<a name="l00330"></a>00330 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00331"></a>00331 };
<a name="l00332"></a>00332
<a name="l00333"></a>00333 <a class="code" href="class_c_echo_write.html">CEchoWrite</a>* CEchoWrite::NewLC(RSocket* aSocket, <a class="code" href="class_m_u_i_notify.html">MUINotify</a>* aConsole)
<a name="l00334"></a>00334 {
<a name="l00335"></a>00335 <a class="code" href="class_c_echo_write.html">CEchoWrite</a>* <span class="keyword">self</span> = <span class="keyword">new</span>(ELeave) <a class="code" href="class_c_echo_write.html">CEchoWrite</a>;
<a name="l00336"></a>00336 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00337"></a>00337 <span class="keyword">self</span>->ConstructL(aSocket, aConsole);
<a name="l00338"></a>00338 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00339"></a>00339 };
<a name="l00340"></a>00340
<a name="l00341"></a>00341 <span class="comment">/*</span>
<a name="l00342"></a>00342 <span class="comment">ConstructL function - adds the active object to the Scheduler</span>
<a name="l00343"></a>00343 <span class="comment">*/</span>
<a name="l00344"></a>00344 <span class="keywordtype">void</span> CEchoWrite::ConstructL(RSocket* aSocket, <a class="code" href="class_m_u_i_notify.html">MUINotify</a>* aConsole)
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 iEchoSocket = aSocket;
<a name="l00347"></a>00347 iConsole = aConsole;
<a name="l00348"></a>00348 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00349"></a>00349
<a name="l00350"></a>00350 iTimeOut = KTimeOut;
<a name="l00351"></a>00351 iTimer = <a class="code" href="class_c_time_out_timer.html#a4cc1f595fc6c8b99ccaef6eb42cdcd7a">CTimeOutTimer::NewL</a>(10, *<span class="keyword">this</span>);
<a name="l00352"></a>00352 iWriteStatus = EWaiting;
<a name="l00353"></a>00353 };
<a name="l00354"></a>00354
<a name="l00355"></a>00355 CEchoWrite::~CEchoWrite()
<a name="l00356"></a>00356 {
<a name="l00357"></a>00357 <span class="keyword">delete</span> iTimer;
<a name="l00358"></a>00358 }
<a name="l00359"></a>00359 <span class="comment">/*</span>
<a name="l00360"></a>00360 <span class="comment">Cancels asychronous write request</span>
<a name="l00361"></a>00361 <span class="comment">*/</span>
<a name="l00362"></a>00362 <span class="keywordtype">void</span> CEchoWrite::DoCancel()
<a name="l00363"></a>00363 {
<a name="l00364"></a>00364 iEchoSocket->CancelWrite();
<a name="l00365"></a>00365 };
<a name="l00366"></a>00366 <span class="comment">/*</span>
<a name="l00367"></a>00367 <span class="comment"> Implements MTimeOutNotify: called when timeout expired</span>
<a name="l00368"></a>00368 <span class="comment">*/</span>
<a name="l00369"></a>00369 <span class="keywordtype">void</span> CEchoWrite::TimerExpired()
<a name="l00370"></a>00370 {
<a name="l00371"></a>00371 Cancel();
<a name="l00372"></a>00372 iWriteStatus = ETimedOut;
<a name="l00373"></a>00373 TRequestStatus* p=&iStatus;
<a name="l00374"></a>00374 SetActive();
<a name="l00375"></a>00375 User::RequestComplete(p, ETimedOut);
<a name="l00376"></a>00376 }
<a name="l00377"></a>00377 <span class="comment">/*</span>
<a name="l00378"></a>00378 <span class="comment"> Active object request complete handler</span>
<a name="l00379"></a>00379 <span class="comment">*/</span>
<a name="l00380"></a>00380 <span class="keywordtype">void</span> CEchoWrite::RunL()
<a name="l00381"></a>00381 {
<a name="l00382"></a>00382 <span class="keywordflow">if</span> (iStatus == KErrNone)
<a name="l00383"></a>00383 {
<a name="l00384"></a>00384 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KWriteOperationTimedOut,<span class="stringliteral">"\nWrite operation timed out"</span>);
<a name="l00385"></a>00385 <span class="keywordflow">switch</span>(iWriteStatus)
<a name="l00386"></a>00386 {
<a name="l00387"></a>00387 <span class="comment">// Character has been written to socket</span>
<a name="l00388"></a>00388 <span class="keywordflow">case</span> ESending:
<a name="l00389"></a>00389 <span class="comment">// Cancel TimeOut timer</span>
<a name="l00390"></a>00390 iTimer->Cancel();
<a name="l00391"></a>00391 iWriteStatus = EWaiting;
<a name="l00392"></a>00392 <span class="keywordflow">break</span>;
<a name="l00393"></a>00393 <span class="comment">// Request timed out</span>
<a name="l00394"></a>00394 <span class="keywordflow">case</span> ETimedOut:
<a name="l00395"></a>00395 iConsole->ErrorNotifyL(KWriteOperationTimedOut, KErrTimedOut);
<a name="l00396"></a>00396 <span class="keywordflow">break</span>;
<a name="l00397"></a>00397 <span class="keywordflow">default</span>:;
<a name="l00398"></a>00398 };
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400 <span class="keywordflow">else</span>
<a name="l00401"></a>00401 {
<a name="l00402"></a>00402 <span class="comment">// Error: pass it up to user interface</span>
<a name="l00403"></a>00403 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCEchoWriteError,<span class="stringliteral">"\nCEchoWrite error"</span>);
<a name="l00404"></a>00404 iConsole->ErrorNotifyL(KCEchoWriteError, iStatus.Int());
<a name="l00405"></a>00405 }
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407 <span class="comment">/*</span>
<a name="l00408"></a>00408 <span class="comment">Write data to a stream socket</span>
<a name="l00409"></a>00409 <span class="comment">*/</span>
<a name="l00410"></a>00410 <span class="keywordtype">void</span> CEchoWrite::IssueWrite(<span class="keyword">const</span> TChar &aChar)
<a name="l00411"></a>00411 {
<a name="l00412"></a>00412 <span class="comment">// Set up buffer</span>
<a name="l00413"></a>00413 iBuffer.SetLength(0);
<a name="l00414"></a>00414 iBuffer.Append(aChar);
<a name="l00415"></a>00415 iEchoSocket->Write(iBuffer, iStatus);
<a name="l00416"></a>00416 <span class="comment">// Request timeout</span>
<a name="l00417"></a>00417 iTimer->After(iTimeOut);
<a name="l00418"></a>00418 SetActive();
<a name="l00419"></a>00419 iWriteStatus = ESending;
<a name="l00420"></a>00420 };
<a name="l00421"></a>00421
<a name="l00422"></a>00422 <span class="keywordtype">void</span> CEchoWrite::IssueSendTo(TInetAddr &aAddr, <span class="keyword">const</span> TChar &aChar)
<a name="l00423"></a>00423 <span class="comment">// This function is not actually used -</span>
<a name="l00424"></a>00424 <span class="comment">// it shows how to write data to a datagram socket </span>
<a name="l00425"></a>00425 {
<a name="l00426"></a>00426 <span class="comment">// Set up buffer</span>
<a name="l00427"></a>00427 iBuffer.SetLength(0);
<a name="l00428"></a>00428 iBuffer.Append(aChar);
<a name="l00429"></a>00429 iEchoSocket->SendTo(iBuffer,aAddr,NULL,iStatus);
<a name="l00430"></a>00430 iTimer->After(iTimeOut);
<a name="l00431"></a>00431 SetActive();
<a name="l00432"></a>00432 iWriteStatus = ESending;
<a name="l00433"></a>00433 };
<a name="l00434"></a>00434
<a name="l00435"></a>00435 <span class="comment">/*</span>
<a name="l00436"></a>00436 <span class="comment"> CTimeOutTimer: timer for comms time-outs</span>
<a name="l00437"></a>00437 <span class="comment">*/</span>
<a name="l00438"></a>00438 CTimeOutTimer::CTimeOutTimer(<span class="keyword">const</span> TInt aPriority)
<a name="l00439"></a>00439 : CTimer(aPriority)
<a name="l00440"></a>00440 {
<a name="l00441"></a>00441 }
<a name="l00442"></a>00442
<a name="l00443"></a>00443 <a class="code" href="class_c_time_out_timer.html#a11e245461c6f57e238aa0c991824c3fc">CTimeOutTimer::~CTimeOutTimer</a>()
<a name="l00444"></a>00444 {
<a name="l00445"></a>00445 Cancel();
<a name="l00446"></a>00446 }
<a name="l00447"></a>00447
<a name="l00448"></a>00448 <a class="code" href="class_c_time_out_timer.html">CTimeOutTimer</a>* <a class="code" href="class_c_time_out_timer.html#a4cc1f595fc6c8b99ccaef6eb42cdcd7a">CTimeOutTimer::NewL</a>(<span class="keyword">const</span> TInt aPriority, <a class="code" href="class_m_time_out_notify.html">MTimeOutNotify</a>& aTimeOutNotify)
<a name="l00449"></a>00449 {
<a name="l00450"></a>00450 <a class="code" href="class_c_time_out_timer.html">CTimeOutTimer</a> *p = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_time_out_timer.html">CTimeOutTimer</a>(aPriority);
<a name="l00451"></a>00451 CleanupStack::PushL(p);
<a name="l00452"></a>00452 p->ConstructL(aTimeOutNotify);
<a name="l00453"></a>00453 CleanupStack::Pop();
<a name="l00454"></a>00454 <span class="keywordflow">return</span> p;
<a name="l00455"></a>00455 }
<a name="l00459"></a><a class="code" href="class_c_time_out_timer.html#ab1966a9b992a0311812ae8f7c23eba0b">00459</a> <span class="keywordtype">void</span> CTimeOutTimer::ConstructL(<a class="code" href="class_m_time_out_notify.html">MTimeOutNotify</a> &aTimeOutNotify)
<a name="l00460"></a>00460 {
<a name="l00461"></a>00461 iNotify=&aTimeOutNotify;
<a name="l00462"></a>00462 CTimer::ConstructL();
<a name="l00463"></a>00463 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00464"></a>00464 }
<a name="l00468"></a>00468 <span class="keywordtype">void</span> <a class="code" href="class_c_time_out_timer.html#aef6eda1dd050a1b73a56849e3bba9897">CTimeOutTimer::RunL</a>()
<a name="l00469"></a>00469
<a name="l00470"></a>00470 {
<a name="l00471"></a>00471 iNotify->TimerExpired();
<a name="l00472"></a>00472 }
<a name="l00473"></a>00473
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