Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_client_server_async_2server_2src_2timesession_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/S60CppExamples/ClientServerAsync/server/src/timesession.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment">* ==============================================================================</span>
<a name="l00003"></a>00003 <span class="comment">* Name : timesession.cpp</span>
<a name="l00004"></a>00004 <span class="comment">* Part of : CSAsync</span>
<a name="l00005"></a>00005 <span class="comment">* Interface :</span>
<a name="l00006"></a>00006 <span class="comment">* Description :</span>
<a name="l00007"></a>00007 <span class="comment">* Version :</span>
<a name="l00008"></a>00008 <span class="comment">*</span>
<a name="l00009"></a>00009 <span class="comment">* Copyright (c) 2004-2006 Nokia Corporation.</span>
<a name="l00010"></a>00010 <span class="comment">* This material, including documentation and any related</span>
<a name="l00011"></a>00011 <span class="comment">* computer programs, is protected by copyright controlled by</span>
<a name="l00012"></a>00012 <span class="comment">* Nokia Corporation.</span>
<a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span>
<a name="l00014"></a>00014 <span class="comment">*/</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="comment">// INCLUDE FILES</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <e32svr.h></span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include "TimeSession.h"</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include "ClientServerCommon.h"</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include "TimeServer.h"</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="comment">// ========================= MEMBER FUNCTIONS ==================================</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00027"></a>00027 <span class="comment">// CTimeServerSession::NewL()</span>
<a name="l00028"></a>00028 <span class="comment">// Two-phased constructor.</span>
<a name="l00029"></a>00029 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00030"></a>00030 <span class="comment">//</span>
<a name="l00031"></a><a class="code" href="class_c_time_server_session.html#a79d62e9984113a28d147f151788ea80e">00031</a> <a class="code" href="class_c_time_server_session.html">CTimeServerSession</a>* <a class="code" href="class_c_time_server_session.html#a79d62e9984113a28d147f151788ea80e">CTimeServerSession::NewL</a>( <a class="code" href="class_c_time_server.html">CTimeServer</a>& aServer )
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 <a class="code" href="class_c_time_server_session.html">CTimeServerSession</a>* <span class="keyword">self</span> = <a class="code" href="class_c_time_server_session.html#af7b2cd8196f1b5b4e84e20f38b9ce59b">CTimeServerSession::NewLC</a>( aServer );
<a name="l00034"></a>00034 CleanupStack::Pop( <span class="keyword">self</span> );
<a name="l00035"></a>00035 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00039"></a>00039 <span class="comment">// CTimeServerSession::NewLC()</span>
<a name="l00040"></a>00040 <span class="comment">// Two-phased constructor.</span>
<a name="l00041"></a>00041 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00042"></a>00042 <span class="comment">//</span>
<a name="l00043"></a><a class="code" href="class_c_time_server_session.html#af7b2cd8196f1b5b4e84e20f38b9ce59b">00043</a> <a class="code" href="class_c_time_server_session.html">CTimeServerSession</a>* <a class="code" href="class_c_time_server_session.html#af7b2cd8196f1b5b4e84e20f38b9ce59b">CTimeServerSession::NewLC</a>( <a class="code" href="class_c_time_server.html">CTimeServer</a>& aServer )
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <a class="code" href="class_c_time_server_session.html">CTimeServerSession</a>* <span class="keyword">self</span> = <span class="keyword">new</span> ( ELeave ) <a class="code" href="class_c_time_server_session.html">CTimeServerSession</a>( aServer );
<a name="l00046"></a>00046 CleanupStack::PushL( <span class="keyword">self</span> );
<a name="l00047"></a>00047 <span class="keyword">self</span>->ConstructL();
<a name="l00048"></a>00048 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00052"></a>00052 <span class="comment">// CTimeServerSession::ConstructL()</span>
<a name="l00053"></a>00053 <span class="comment">// Symbian 2nd phase constructor can leave.</span>
<a name="l00054"></a>00054 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00055"></a>00055 <span class="comment">//</span>
<a name="l00056"></a>00056 <span class="keywordtype">void</span> CTimeServerSession::ConstructL()
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 iServer.<a class="code" href="class_c_time_server.html#a9fb3c4c32d4050bc6f3b8ede0199bb7e">IncrementSessions</a>();
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00062"></a>00062 <span class="comment">// CTimeServerSession::CTimeServerSession()</span>
<a name="l00063"></a>00063 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span>
<a name="l00064"></a>00064 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00065"></a>00065 <span class="comment">//</span>
<a name="l00066"></a>00066 CTimeServerSession::CTimeServerSession( <a class="code" href="class_c_time_server.html">CTimeServer</a>& aServer )
<a name="l00067"></a>00067 : iServer( aServer )
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 <span class="comment">// Implementation not required</span>
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00073"></a>00073 <span class="comment">// CTimeServerSession::~CTimeServerSession()</span>
<a name="l00074"></a>00074 <span class="comment">// Destructor.</span>
<a name="l00075"></a>00075 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00076"></a>00076 <span class="comment">//</span>
<a name="l00077"></a><a class="code" href="class_c_time_server_session.html#aa53019c11a98c408e6840e8411a57e82">00077</a> <a class="code" href="class_c_time_server_session.html#aa53019c11a98c408e6840e8411a57e82">CTimeServerSession::~CTimeServerSession</a>()
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 iServer.<a class="code" href="class_c_time_server.html#ad2b51a53e39f5844cce161bb912e0b7a">DecrementSessions</a>();
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00083"></a>00083 <span class="comment">// CTimeServerSession::ServiceL()</span>
<a name="l00084"></a>00084 <span class="comment">// Service request from client.</span>
<a name="l00085"></a>00085 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00086"></a>00086 <span class="comment">//</span>
<a name="l00087"></a><a class="code" href="class_c_time_server_session.html#a0fd8da10042e0e7c97a74eef7f1fe413">00087</a> <span class="keywordtype">void</span> <a class="code" href="class_c_time_server_session.html#a0fd8da10042e0e7c97a74eef7f1fe413">CTimeServerSession::ServiceL</a>( <span class="keyword">const</span> RMessage2& aMessage )
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 <span class="keywordflow">switch</span> ( aMessage.Function() )
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 <span class="keywordflow">case</span> ETimeServRequestTime:
<a name="l00092"></a>00092 RequestTimeL( aMessage );
<a name="l00093"></a>00093 <span class="keywordflow">break</span>;
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordflow">case</span> ETimeServCancelRequestTime:
<a name="l00096"></a>00096 <span class="keywordflow">if</span> ( iWaitingForTick )
<a name="l00097"></a>00097 {
<a name="l00098"></a>00098 iMessage.Complete( KErrCancel );
<a name="l00099"></a>00099 iWaitingForTick = EFalse;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 aMessage.Complete( KErrNone );
<a name="l00102"></a>00102 <span class="keywordflow">break</span>;
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="keywordflow">default</span>:
<a name="l00105"></a>00105 PanicClient( aMessage, <a class="code" href="secureserver_8h.html#a091a5ad2956fb84c4470a59010a0d4efaeef6b7f2a8413e6863e2136b93228c3a">EBadRequest</a> );
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00110"></a>00110 <span class="comment">// CTimeServerSession::RequestTimeL()</span>
<a name="l00111"></a>00111 <span class="comment">// Called as a result of the client requesting the time.</span>
<a name="l00112"></a>00112 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00113"></a>00113 <span class="comment">//</span>
<a name="l00114"></a>00114 <span class="keywordtype">void</span> CTimeServerSession::RequestTimeL( <span class="keyword">const</span> RMessage2& aMessage )
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 <span class="keywordflow">if</span> ( iWaitingForTick )
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 <span class="comment">// We're already busy</span>
<a name="l00119"></a>00119 PanicClient( aMessage, EReqAlreadyPending );
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 <span class="keywordflow">else</span>
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 <span class="comment">// Keep a copy of message - for later use</span>
<a name="l00124"></a>00124 iMessage = aMessage ;
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="comment">// Start the work performed by the server</span>
<a name="l00127"></a>00127 <span class="comment">// (just a wait for new second in this case)</span>
<a name="l00128"></a>00128 iServer.<a class="code" href="class_c_time_server.html#a6787f6b173c59446b202ae04177a5d88">WaitForTickL</a>();
<a name="l00129"></a>00129 iWaitingForTick = ETrue;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00134"></a>00134 <span class="comment">// CTimeServerSession::SendTimeToClient()</span>
<a name="l00135"></a>00135 <span class="comment">// Sends current time back to requesting client.</span>
<a name="l00136"></a>00136 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00137"></a>00137 <span class="comment">//</span>
<a name="l00138"></a><a class="code" href="class_c_time_server_session.html#a5db282a872864d62b94a2a6a25159d5f">00138</a> <span class="keywordtype">void</span> <a class="code" href="class_c_time_server_session.html#a5db282a872864d62b94a2a6a25159d5f">CTimeServerSession::SendTimeToClient</a>()
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 <span class="keywordflow">if</span> ( iWaitingForTick )
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 iWaitingForTick = EFalse;
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="comment">// Get current time to return to client</span>
<a name="l00145"></a>00145 TTime time;
<a name="l00146"></a>00146 time.HomeTime();
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="comment">// Create a descriptor which points to the 'time' structure</span>
<a name="l00149"></a>00149 TPtr8 ptr( reinterpret_cast<TUint8*>( &time ), <span class="keyword">sizeof</span>( time ),
<a name="l00150"></a>00150 <span class="keyword">sizeof</span>( time ) );
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="comment">// Write the 'time' data back to the client </span>
<a name="l00153"></a>00153 TRAPD( res, iMessage.WriteL( 0, ptr, 0 ) );
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="keywordflow">if</span> ( res != KErrNone )
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157 PanicClient( iMessage, EBadDescriptor );
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159
<a name="l00160"></a>00160 iMessage.Complete( ETimeServRequestTimeComplete );
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00165"></a>00165 <span class="comment">// CTimeServerSession::PanicClient()</span>
<a name="l00166"></a>00166 <span class="comment">// Causes the client thread to panic.</span>
<a name="l00167"></a>00167 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00168"></a>00168 <span class="comment">//</span>
<a name="l00169"></a>00169 <span class="keywordtype">void</span> CTimeServerSession::PanicClient( <span class="keyword">const</span> RMessagePtr2& aMessage,
<a name="l00170"></a>00170 TInt aPanic )<span class="keyword"> const</span>
<a name="l00171"></a>00171 <span class="keyword"> </span>{
<a name="l00172"></a>00172 aMessage.Panic( KCSAsyncServer, aPanic ); <span class="comment">// Note: this panics the client thread,</span>
<a name="l00173"></a>00173 <span class="comment">// not server</span>
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="comment">// End of File</span>
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