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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/csasyncrequesthandler_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/S60CppExamples/ClientServerAsync/client/src/csasyncrequesthandler.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/S60CppExamples/ClientServerAsync/client/src/csasyncrequesthandler.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment">* ==============================================================================</span>
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<a name="l00003"></a>00003 <span class="comment">*  Name        : csasyncrequesthandler.cpp</span>
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<a name="l00004"></a>00004 <span class="comment">*  Part of     : CSAsync</span>
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<a name="l00005"></a>00005 <span class="comment">*  Interface   :</span>
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<a name="l00006"></a>00006 <span class="comment">*  Description :</span>
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<a name="l00007"></a>00007 <span class="comment">*  Version     :</span>
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<a name="l00008"></a>00008 <span class="comment">*</span>
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<a name="l00009"></a>00009 <span class="comment">*  Copyright (c) 2004-2006 Nokia Corporation.</span>
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<a name="l00010"></a>00010 <span class="comment">*  This material, including documentation and any related</span>
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<a name="l00011"></a>00011 <span class="comment">*  computer programs, is protected by copyright controlled by</span>
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<a name="l00012"></a>00012 <span class="comment">*  Nokia Corporation.</span>
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<a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span>
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<a name="l00014"></a>00014 <span class="comment">*/</span>
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<a name="l00015"></a>00015
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<a name="l00016"></a>00016 <span class="comment">// INCLUDE FILES</span>
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<a name="l00017"></a>00017 <span class="preprocessor">#include &lt;e32svr.h&gt;</span>
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<a name="l00018"></a>00018
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<a name="l00019"></a>00019 <span class="preprocessor">#include &quot;CSAsync.pan&quot;</span>
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<a name="l00020"></a>00020 <span class="preprocessor">#include &quot;CSAsyncRequestHandler.h&quot;</span>
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<a name="l00021"></a>00021 <span class="preprocessor">#include &quot;ClientServerCommon.h&quot;</span>
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<a name="l00022"></a>00022 <span class="preprocessor">#include &quot;AsyncTimeObserver.h&quot;</span>
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<a name="l00023"></a>00023
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<a name="l00024"></a>00024 <span class="comment">// ========================= MEMBER FUNCTIONS ==================================</span>
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<a name="l00025"></a>00025
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<a name="l00026"></a>00026 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00027"></a>00027 <span class="comment">// CCSAsyncRequestHandler::NewL()</span>
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<a name="l00028"></a>00028 <span class="comment">// Two-phased constructor.</span>
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<a name="l00029"></a>00029 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00030"></a><a class="code" href="class_c_c_s_async_request_handler.html#ace1ec40e7106ef002104b42eee746f64">00030</a> <a class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler</a>* <a class="code" href="class_c_c_s_async_request_handler.html#ace1ec40e7106ef002104b42eee746f64">CCSAsyncRequestHandler::NewL</a>(
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<a name="l00031"></a>00031                                                <a class="code" href="class_m_async_time_observer.html">MAsyncTimeObserver</a>&amp; aObserver )
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<a name="l00032"></a>00032     {
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<a name="l00033"></a>00033     <a class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler</a>* <span class="keyword">self</span> = <a class="code" href="class_c_c_s_async_request_handler.html#a5e2a6f65b5d2a9c33a1bae7d76c334d1">NewLC</a>( aObserver );
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<a name="l00034"></a>00034     CleanupStack::Pop( <span class="keyword">self</span> );
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<a name="l00035"></a>00035     <span class="keywordflow">return</span>( <span class="keyword">self</span> ) ;
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<a name="l00036"></a>00036     }
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<a name="l00037"></a>00037
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<a name="l00038"></a>00038 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00039"></a>00039 <span class="comment">// CCSAsyncRequestHandler::NewLC()</span>
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<a name="l00040"></a>00040 <span class="comment">// Two-phased constructor.</span>
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<a name="l00041"></a>00041 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00042"></a><a class="code" href="class_c_c_s_async_request_handler.html#a5e2a6f65b5d2a9c33a1bae7d76c334d1">00042</a> <a class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler</a>* <a class="code" href="class_c_c_s_async_request_handler.html#a5e2a6f65b5d2a9c33a1bae7d76c334d1">CCSAsyncRequestHandler::NewLC</a>(
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<a name="l00043"></a>00043                                                <a class="code" href="class_m_async_time_observer.html">MAsyncTimeObserver</a>&amp; aObserver )
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<a name="l00044"></a>00044     {
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<a name="l00045"></a>00045     <a class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler</a>* <span class="keyword">self</span> =
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<a name="l00046"></a>00046         <span class="keyword">new</span> ( ELeave ) <a class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler</a>( aObserver );
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<a name="l00047"></a>00047     CleanupStack::PushL( <span class="keyword">self</span> );
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<a name="l00048"></a>00048     <span class="keyword">self</span>-&gt;ConstructL();
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<a name="l00049"></a>00049     <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00050"></a>00050     }
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<a name="l00051"></a>00051
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<a name="l00052"></a>00052 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00053"></a>00053 <span class="comment">// CCSAsyncRequestHandler::ConstructL()</span>
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<a name="l00054"></a>00054 <span class="comment">// Symbian 2nd phase constructor can leave.</span>
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<a name="l00055"></a>00055 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00056"></a>00056 <span class="comment">//</span>
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<a name="l00057"></a>00057 <span class="keywordtype">void</span> CCSAsyncRequestHandler::ConstructL()
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<a name="l00058"></a>00058     {
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<a name="l00059"></a>00059     User::LeaveIfError( iSession.<a class="code" href="class_r_time_server_session.html#a21ea524d4ff3c0622035d60c8a4c5f62">Connect</a>() );
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<a name="l00060"></a>00060     }
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<a name="l00061"></a>00061
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<a name="l00062"></a>00062 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00063"></a>00063 <span class="comment">// CCSAsyncRequestHandler::CCSAsyncRequestHandler()</span>
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<a name="l00064"></a>00064 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span>
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<a name="l00065"></a>00065 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00066"></a>00066 CCSAsyncRequestHandler::CCSAsyncRequestHandler( <a class="code" href="class_m_async_time_observer.html">MAsyncTimeObserver</a>&amp; aObserver )
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<a name="l00067"></a>00067 : CActive( EPriorityStandard ), iObserver( aObserver )
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<a name="l00068"></a>00068     {
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<a name="l00069"></a>00069     CActiveScheduler::Add( <span class="keyword">this</span> );
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<a name="l00070"></a>00070     }
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<a name="l00071"></a>00071
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<a name="l00072"></a>00072 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00073"></a>00073 <span class="comment">// CCSAsyncRequestHandler::~CCSAsyncRequestHandler()</span>
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<a name="l00074"></a>00074 <span class="comment">// Destructor.</span>
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<a name="l00075"></a>00075 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00076"></a>00076 <span class="comment">//</span>
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<a name="l00077"></a><a class="code" href="class_c_c_s_async_request_handler.html#abdff5aea2c8550c9399f2f78d8216e81">00077</a> <a class="code" href="class_c_c_s_async_request_handler.html#abdff5aea2c8550c9399f2f78d8216e81">CCSAsyncRequestHandler::~CCSAsyncRequestHandler</a>()
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<a name="l00078"></a>00078     {
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<a name="l00079"></a>00079     Cancel(); <span class="comment">// Causes call to DoCancel()</span>
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<a name="l00080"></a>00080     iSession.Close();
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<a name="l00081"></a>00081     }
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<a name="l00082"></a>00082
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<a name="l00083"></a>00083 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00084"></a>00084 <span class="comment">// CCSAsyncRequestHandler::RequestTime()</span>
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<a name="l00085"></a>00085 <span class="comment">// Sends a request to the server for an update to the time.</span>
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<a name="l00086"></a>00086 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00087"></a>00087 <span class="comment">//</span>
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<a name="l00088"></a><a class="code" href="class_c_c_s_async_request_handler.html#ad34e374499b67c21347c5f87f7911324">00088</a> <span class="keywordtype">void</span> <a class="code" href="class_c_c_s_async_request_handler.html#ad34e374499b67c21347c5f87f7911324">CCSAsyncRequestHandler::RequestTime</a>()
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<a name="l00089"></a>00089     {
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<a name="l00090"></a>00090     <span class="keywordflow">if</span> ( !IsActive() )
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<a name="l00091"></a>00091         {
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<a name="l00092"></a>00092         iSession.<a class="code" href="class_r_time_server_session.html#a456203c7ad8889a4753222e98173ff00">RequestTime</a>( iTime, iStatus );
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<a name="l00093"></a>00093         SetActive();
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<a name="l00094"></a>00094         }
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<a name="l00095"></a>00095     }
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<a name="l00096"></a>00096
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<a name="l00097"></a>00097 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00098"></a>00098 <span class="comment">// CCSAsyncRequestHandler::CancelRequest()</span>
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<a name="l00099"></a>00099 <span class="comment">// Cancels an outstanding request.</span>
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<a name="l00100"></a>00100 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00101"></a>00101 <span class="comment">//</span>
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<a name="l00102"></a><a class="code" href="class_c_c_s_async_request_handler.html#a64c5f14d32e4351b484cbc5717457d4c">00102</a> <span class="keywordtype">void</span> <a class="code" href="class_c_c_s_async_request_handler.html#a64c5f14d32e4351b484cbc5717457d4c">CCSAsyncRequestHandler::CancelRequest</a>()
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<a name="l00103"></a>00103     {
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<a name="l00104"></a>00104     Cancel() ; <span class="comment">// Causes call to DoCancel()</span>
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<a name="l00105"></a>00105     }
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<a name="l00106"></a>00106
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<a name="l00107"></a>00107 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00108"></a>00108 <span class="comment">// CCSAsyncRequestHandler::RunL()</span>
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<a name="l00109"></a>00109 <span class="comment">// Invoked to handle responses from the server.</span>
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<a name="l00110"></a>00110 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00111"></a>00111 <span class="comment">//</span>
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<a name="l00112"></a><a class="code" href="class_c_c_s_async_request_handler.html#a68039f23cd042511b6911beeec532a0f">00112</a> <span class="keywordtype">void</span> <a class="code" href="class_c_c_s_async_request_handler.html#a68039f23cd042511b6911beeec532a0f">CCSAsyncRequestHandler::RunL</a>()
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<a name="l00113"></a>00113     {
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<a name="l00114"></a>00114     <span class="keywordflow">switch</span> ( iStatus.Int() )
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<a name="l00115"></a>00115         {
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<a name="l00116"></a>00116         <span class="keywordflow">case</span> ETimeServRequestTimeComplete:
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<a name="l00117"></a>00117             <span class="comment">// The server has completed the request, signalled the client</span>
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<a name="l00118"></a>00118             <span class="comment">// thread and the clients active scheduler runs the active object.</span>
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<a name="l00119"></a>00119             <span class="comment">// Now do something with it</span>
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<a name="l00120"></a>00120             iObserver.<a class="code" href="class_m_async_time_observer.html#a98b417b48bfe6a55ca0b450a97fa0b7e">HandleTimeUpdate</a>();
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<a name="l00121"></a>00121             <a class="code" href="class_c_c_s_async_request_handler.html#ad34e374499b67c21347c5f87f7911324">RequestTime</a>();   <span class="comment">// Add this line to make the clock keep ticking</span>
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<a name="l00122"></a>00122             break ;
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<a name="l00123"></a>00123
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<a name="l00124"></a>00124         <span class="keywordflow">case</span> KErrCancel:
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<a name="l00125"></a>00125             <span class="comment">// The request was canceled</span>
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<a name="l00126"></a>00126             break ;
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<a name="l00127"></a>00127
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<a name="l00128"></a>00128         <span class="keywordflow">case</span> KErrNotReady:
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<a name="l00129"></a>00129             <span class="comment">// We requested a new time before completing the previous request</span>
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<a name="l00130"></a>00130         <span class="keywordflow">default</span>:
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<a name="l00131"></a>00131             User::Panic( KCSAsyncClient, ECSAsyncBadState ); <span class="comment">// Unexpected error</span>
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<a name="l00132"></a>00132             <span class="keywordflow">break</span>;
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<a name="l00133"></a>00133         }
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<a name="l00134"></a>00134     }
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<a name="l00135"></a>00135
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<a name="l00136"></a>00136 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00137"></a>00137 <span class="comment">// CCSAsyncRequestHandler::DoCancel()</span>
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<a name="l00138"></a>00138 <span class="comment">// Cancels any outstanding operation.</span>
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<a name="l00139"></a>00139 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00140"></a>00140 <span class="comment">//</span>
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<a name="l00141"></a><a class="code" href="class_c_c_s_async_request_handler.html#ab2c9e682b7fc6a09691feeb8c8ffe721">00141</a> <span class="keywordtype">void</span> <a class="code" href="class_c_c_s_async_request_handler.html#ab2c9e682b7fc6a09691feeb8c8ffe721">CCSAsyncRequestHandler::DoCancel</a>()
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<a name="l00142"></a>00142     {
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<a name="l00143"></a>00143     iSession.<a class="code" href="class_r_time_server_session.html#af8ab12245c507789cdc592212463be5e">CancelRequestTime</a>();
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<a name="l00144"></a>00144     }
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<a name="l00145"></a>00145
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<a name="l00146"></a>00146 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00147"></a>00147 <span class="comment">// CCSAsyncRequestHandler::Time() const</span>
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<a name="l00148"></a>00148 <span class="comment">// Gets a copy of the last time received from the server.</span>
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<a name="l00149"></a>00149 <span class="comment">// -----------------------------------------------------------------------------</span>
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<a name="l00150"></a>00150 <span class="comment">//</span>
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<a name="l00151"></a><a class="code" href="class_c_c_s_async_request_handler.html#aabca1fcdd326961717cd467071b93432">00151</a> TTime <a class="code" href="class_c_c_s_async_request_handler.html#aabca1fcdd326961717cd467071b93432">CCSAsyncRequestHandler::Time</a>()<span class="keyword"> const</span>
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<a name="l00152"></a>00152 <span class="keyword">    </span>{
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<a name="l00153"></a>00153     <span class="keywordflow">return</span> iTime;
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<a name="l00154"></a>00154     }
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<a name="l00155"></a>00155
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<a name="l00156"></a>00156 <span class="comment">// End of File</span>
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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