558 lines
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558 lines
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 <span id="projectnumber">1.22.0</span>
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<li class="navelem"><a class="el" href="namespacegrpc.html">grpc</a></li><li class="navelem"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html">ClientAsyncReaderWriter</a></li> </ul>
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<div class="header">
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<a href="#pub-methods">Public Member Functions</a> |
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<a href="#pub-static-methods">Static Public Member Functions</a> |
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<a href="#friends">Friends</a> </div>
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<div class="headertitle">
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<div class="title">grpc::ClientAsyncReaderWriter< W, R > Class Template Reference<span class="mlabels"><span class="mlabel">final</span></span></div> </div>
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<div class="contents">
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<p>Async client-side interface for bi-directional streaming, where the outgoing message stream going to the server has messages of type <em>W</em>, and the incoming message stream coming from the server has messages of type <em>R</em>.
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<a href="classgrpc_1_1_client_async_reader_writer.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="grpcpp_2impl_2codegen_2async__stream_8h_source.html">async_stream.h</a>></code></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:ae72f68c240ac2cbca98b524e723bd05b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#ae72f68c240ac2cbca98b524e723bd05b">StartCall</a> (void *tag) override</td></tr>
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<tr class="memdesc:ae72f68c240ac2cbca98b524e723bd05b"><td class="mdescLeft"> </td><td class="mdescRight">Start the call that was set up by the constructor, but only if the constructor was invoked through the "Prepare" API which doesn't actually start the call. <a href="#ae72f68c240ac2cbca98b524e723bd05b">More...</a><br /></td></tr>
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<tr class="separator:ae72f68c240ac2cbca98b524e723bd05b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a169a2eb8bedfd7281b37c79fdd307eb2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a169a2eb8bedfd7281b37c79fdd307eb2">ReadInitialMetadata</a> (void *tag) override</td></tr>
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<tr class="memdesc:a169a2eb8bedfd7281b37c79fdd307eb2"><td class="mdescLeft"> </td><td class="mdescRight">See the <em>ClientAsyncStreamingInterface.ReadInitialMetadata</em> method for semantics of this method. <a href="#a169a2eb8bedfd7281b37c79fdd307eb2">More...</a><br /></td></tr>
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<tr class="separator:a169a2eb8bedfd7281b37c79fdd307eb2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a2f2c91734a7de5affdd427fb88ee6167"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a2f2c91734a7de5affdd427fb88ee6167">Read</a> (R *msg, void *tag) override</td></tr>
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<tr class="memdesc:a2f2c91734a7de5affdd427fb88ee6167"><td class="mdescLeft"> </td><td class="mdescRight">Read a message of type <em>R</em> into <em>msg</em>. <a href="#a2f2c91734a7de5affdd427fb88ee6167">More...</a><br /></td></tr>
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<tr class="separator:a2f2c91734a7de5affdd427fb88ee6167"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a07bcc3a0737c3bee3ef50def89af5fc7"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a07bcc3a0737c3bee3ef50def89af5fc7">Write</a> (const W &msg, void *tag) override</td></tr>
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<tr class="memdesc:a07bcc3a0737c3bee3ef50def89af5fc7"><td class="mdescLeft"> </td><td class="mdescRight">Request the writing of <em>msg</em> with identifying tag <em>tag</em>. <a href="#a07bcc3a0737c3bee3ef50def89af5fc7">More...</a><br /></td></tr>
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<tr class="separator:a07bcc3a0737c3bee3ef50def89af5fc7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:abcea1a4d9d8f6f1070940b1997fe0125"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#abcea1a4d9d8f6f1070940b1997fe0125">Write</a> (const W &msg, <a class="el" href="classgrpc_1_1_write_options.html">WriteOptions</a> options, void *tag) override</td></tr>
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<tr class="memdesc:abcea1a4d9d8f6f1070940b1997fe0125"><td class="mdescLeft"> </td><td class="mdescRight">Request the writing of <em>msg</em> using <a class="el" href="classgrpc_1_1_write_options.html" title="Per-message write options. ">WriteOptions</a> <em>options</em> with identifying tag <em>tag</em>. <a href="#abcea1a4d9d8f6f1070940b1997fe0125">More...</a><br /></td></tr>
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<tr class="separator:abcea1a4d9d8f6f1070940b1997fe0125"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af3e090a0801f6bc524f959cd93e4cddc"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#af3e090a0801f6bc524f959cd93e4cddc">WritesDone</a> (void *tag) override</td></tr>
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<tr class="memdesc:af3e090a0801f6bc524f959cd93e4cddc"><td class="mdescLeft"> </td><td class="mdescRight">Signal the client is done with the writes (half-close the client stream). <a href="#af3e090a0801f6bc524f959cd93e4cddc">More...</a><br /></td></tr>
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<tr class="separator:af3e090a0801f6bc524f959cd93e4cddc"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a292fae35382e0f3c919840689cfb2358"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a292fae35382e0f3c919840689cfb2358">Finish</a> (<a class="el" href="classgrpc_1_1_status.html">Status</a> *status, void *tag) override</td></tr>
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<tr class="memdesc:a292fae35382e0f3c919840689cfb2358"><td class="mdescLeft"> </td><td class="mdescRight">See the <em>ClientAsyncStreamingInterface.Finish</em> method for semantics. <a href="#a292fae35382e0f3c919840689cfb2358">More...</a><br /></td></tr>
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<tr class="separator:a292fae35382e0f3c919840689cfb2358"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="inherit_header pub_methods_classgrpc_1_1internal_1_1_client_async_streaming_interface"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classgrpc_1_1internal_1_1_client_async_streaming_interface')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html">grpc::internal::ClientAsyncStreamingInterface</a></td></tr>
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<tr class="memitem:a5691ad84f8160a3eb10131f1f5de4708 inherit pub_methods_classgrpc_1_1internal_1_1_client_async_streaming_interface"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#a5691ad84f8160a3eb10131f1f5de4708">~ClientAsyncStreamingInterface</a> ()</td></tr>
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<tr class="separator:a5691ad84f8160a3eb10131f1f5de4708 inherit pub_methods_classgrpc_1_1internal_1_1_client_async_streaming_interface"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="inherit_header pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classgrpc_1_1internal_1_1_async_writer_interface')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html">grpc::internal::AsyncWriterInterface< W ></a></td></tr>
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<tr class="memitem:a8ad846091252c112c4db0b41965e5a4c inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html#a8ad846091252c112c4db0b41965e5a4c">~AsyncWriterInterface</a> ()</td></tr>
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<tr class="separator:a8ad846091252c112c4db0b41965e5a4c inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a02565abb7c6b4a7a49c0b29159194b66 inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html#a02565abb7c6b4a7a49c0b29159194b66">WriteLast</a> (const W &msg, <a class="el" href="classgrpc_1_1_write_options.html">WriteOptions</a> options, void *tag)</td></tr>
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<tr class="memdesc:a02565abb7c6b4a7a49c0b29159194b66 inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="mdescLeft"> </td><td class="mdescRight">Request the writing of <em>msg</em> and coalesce it with the writing of trailing metadata, using <a class="el" href="classgrpc_1_1_write_options.html" title="Per-message write options. ">WriteOptions</a> <em>options</em> with identifying tag <em>tag</em>. <a href="classgrpc_1_1internal_1_1_async_writer_interface.html#a02565abb7c6b4a7a49c0b29159194b66">More...</a><br /></td></tr>
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<tr class="separator:a02565abb7c6b4a7a49c0b29159194b66 inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="inherit_header pub_methods_classgrpc_1_1internal_1_1_async_reader_interface"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classgrpc_1_1internal_1_1_async_reader_interface')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classgrpc_1_1internal_1_1_async_reader_interface.html">grpc::internal::AsyncReaderInterface< R ></a></td></tr>
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<tr class="memitem:a18fe4235232864c8770a562cc2aa1f3c inherit pub_methods_classgrpc_1_1internal_1_1_async_reader_interface"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_async_reader_interface.html#a18fe4235232864c8770a562cc2aa1f3c">~AsyncReaderInterface</a> ()</td></tr>
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<tr class="separator:a18fe4235232864c8770a562cc2aa1f3c inherit pub_methods_classgrpc_1_1internal_1_1_async_reader_interface"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
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Static Public Member Functions</h2></td></tr>
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<tr class="memitem:a637f06cdc945255e39223bc265bfc5a5"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a637f06cdc945255e39223bc265bfc5a5">operator delete</a> (void *ptr, std::size_t size)</td></tr>
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<tr class="memitem:a3936dd1cafdd249a73f3393210b9f4ea"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a3936dd1cafdd249a73f3393210b9f4ea">operator delete</a> (void *, void *)</td></tr>
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<tr class="separator:a3936dd1cafdd249a73f3393210b9f4ea"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a>
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Friends</h2></td></tr>
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<tr class="memitem:a5107c618ce45973618f594146940d81c"><td class="memItemLeft" align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a5107c618ce45973618f594146940d81c">internal::ClientAsyncReaderWriterFactory< W, R ></a></td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><h3>template<class W, class R><br />
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class grpc::ClientAsyncReaderWriter< W, R ></h3>
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<p>Async client-side interface for bi-directional streaming, where the outgoing message stream going to the server has messages of type <em>W</em>, and the incoming message stream coming from the server has messages of type <em>R</em>. </p>
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</div><h2 class="groupheader">Member Function Documentation</h2>
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<a id="a292fae35382e0f3c919840689cfb2358"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a292fae35382e0f3c919840689cfb2358">◆ </a></span>Finish()</h2>
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template<class W , class R > </div>
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<td class="memname">void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::Finish </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="classgrpc_1_1_status.html">Status</a> * </td>
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<td class="paramname"><em>status</em>, </td>
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<td>)</td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td>
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<p>See the <em>ClientAsyncStreamingInterface.Finish</em> method for semantics. </p>
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<p>Side effect</p><ul>
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<li>the <em>ClientContext</em> associated with this call is updated with possible initial and trailing metadata sent from the server. </li>
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</ul>
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<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#ad83ce06905fe819ae1e6b5b85e437642">grpc::internal::ClientAsyncStreamingInterface</a>.</p>
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<a id="a637f06cdc945255e39223bc265bfc5a5"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a637f06cdc945255e39223bc265bfc5a5">◆ </a></span>operator delete() <span class="overload">[1/2]</span></h2>
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<td class="memname">static void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::operator delete </td>
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<td>(</td>
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<td class="paramname"><em>ptr</em>, </td>
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<td class="paramtype">std::size_t </td>
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<td>)</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a3936dd1cafdd249a73f3393210b9f4ea">◆ </a></span>operator delete() <span class="overload">[2/2]</span></h2>
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<td class="memname">static void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::operator delete </td>
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<td>(</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a2f2c91734a7de5affdd427fb88ee6167">◆ </a></span>Read()</h2>
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template<class W , class R > </div>
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<td class="memname">void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::Read </td>
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<td>(</td>
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<td class="paramname"><em>tag</em> </td>
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<p>Read a message of type <em>R</em> into <em>msg</em>. </p>
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<p>Completion will be notified by <em>tag</em> on the associated completion queue. This is thread-safe with respect to <em>Write</em> or <em>WritesDone</em> methods. It should not be called concurrently with other streaming APIs on the same stream. It is not meaningful to call it concurrently with another <em>AsyncReaderInterface::Read</em> on the same stream since reads on the same stream are delivered in order.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[out]</td><td class="paramname">msg</td><td>Where to eventually store the read message. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">tag</td><td>The tag identifying the operation.</td></tr>
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<p>Side effect: note that this method attempt to receive initial metadata for a stream if it hasn't yet been received. </p>
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<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_async_reader_interface.html#adf87c602036d69158950b7299d0aae70">grpc::internal::AsyncReaderInterface< R ></a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a169a2eb8bedfd7281b37c79fdd307eb2">◆ </a></span>ReadInitialMetadata()</h2>
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template<class W , class R > </div>
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<td class="memname">void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::ReadInitialMetadata </td>
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<td>(</td>
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<p>See the <em>ClientAsyncStreamingInterface.ReadInitialMetadata</em> method for semantics of this method. </p>
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<p>Side effect:</p><ul>
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<li>upon receiving initial metadata from the server, the <em>ClientContext</em> is updated with it, and then the receiving initial metadata can be accessed through this <em>ClientContext</em>. </li>
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</ul>
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<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#ab5a35e289028ac2aaf062572ba6d567d">grpc::internal::ClientAsyncStreamingInterface</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae72f68c240ac2cbca98b524e723bd05b">◆ </a></span>StartCall()</h2>
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template<class W , class R > </div>
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<td class="memname">void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::StartCall </td>
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<td>(</td>
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<p>Start the call that was set up by the constructor, but only if the constructor was invoked through the "Prepare" API which doesn't actually start the call. </p>
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<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#a2bd65338b34000980fa048911c577637">grpc::internal::ClientAsyncStreamingInterface</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a07bcc3a0737c3bee3ef50def89af5fc7">◆ </a></span>Write() <span class="overload">[1/2]</span></h2>
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<td class="memname">void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::Write </td>
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<p>Request the writing of <em>msg</em> with identifying tag <em>tag</em>. </p>
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<p>Only one write may be outstanding at any given time. This means that after calling Write, one must wait to receive <em>tag</em> from the completion queue BEFORE calling Write again. This is thread-safe with respect to <em>AsyncReaderInterface::Read</em> </p>
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<p>gRPC doesn't take ownership or a reference to <em>msg</em>, so it is safe to to deallocate once Write returns.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">msg</td><td>The message to be written. </td></tr>
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<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html#aa61e21fdfef0a4fb34f595bef767e6a8">grpc::internal::AsyncWriterInterface< W ></a>.</p>
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<a id="abcea1a4d9d8f6f1070940b1997fe0125"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#abcea1a4d9d8f6f1070940b1997fe0125">◆ </a></span>Write() <span class="overload">[2/2]</span></h2>
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<td class="memname">void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::Write </td>
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<td class="paramname"><em>options</em>, </td>
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<p>Request the writing of <em>msg</em> using <a class="el" href="classgrpc_1_1_write_options.html" title="Per-message write options. ">WriteOptions</a> <em>options</em> with identifying tag <em>tag</em>. </p>
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<p>Only one write may be outstanding at any given time. This means that after calling Write, one must wait to receive <em>tag</em> from the completion queue BEFORE calling Write again. <a class="el" href="classgrpc_1_1_write_options.html" title="Per-message write options. ">WriteOptions</a> <em>options</em> is used to set the write options of this message. This is thread-safe with respect to <em>AsyncReaderInterface::Read</em> </p>
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<p>gRPC doesn't take ownership or a reference to <em>msg</em>, so it is safe to to deallocate once Write returns.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">msg</td><td>The message to be written. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">options</td><td>The <a class="el" href="classgrpc_1_1_write_options.html" title="Per-message write options. ">WriteOptions</a> to be used to write this message. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">tag</td><td>The tag identifying the operation. </td></tr>
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<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html#a5745991911afa0fb12646a5f79738a0d">grpc::internal::AsyncWriterInterface< W ></a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af3e090a0801f6bc524f959cd93e4cddc">◆ </a></span>WritesDone()</h2>
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<td class="memname">void <a class="el" href="classgrpc_1_1_client_async_reader_writer.html">grpc::ClientAsyncReaderWriter</a>< W, R >::WritesDone </td>
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<p>Signal the client is done with the writes (half-close the client stream). </p>
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<p>Thread-safe with respect to <em>AsyncReaderInterface::Read</em> </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">tag</td><td>The tag identifying the operation. </td></tr>
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<p>Implements <a class="el" href="classgrpc_1_1_client_async_reader_writer_interface.html#a878193880df68ab969b697f1fcd7dbc3">grpc::ClientAsyncReaderWriterInterface< W, R ></a>.</p>
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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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<a id="a5107c618ce45973618f594146940d81c"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a5107c618ce45973618f594146940d81c">◆ </a></span>internal::ClientAsyncReaderWriterFactory< W, R ></h2>
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<td class="memname">friend class <a class="el" href="classgrpc_1_1internal_1_1_client_async_reader_writer_factory.html">internal::ClientAsyncReaderWriterFactory</a>< W, R ></td>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li>include/grpcpp/impl/codegen/<a class="el" href="grpcpp_2impl_2codegen_2async__stream_8h_source.html">async_stream.h</a></li>
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</ul>
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