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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_writer.html">ClientAsyncWriter</a></li>  </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<p>Async API on the client side for doing client-streaming RPCs, where the outgoing message stream going to the server contains messages of type <em>W</em>.  
 <a href="classgrpc_1_1_client_async_writer.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="impl_2codegen_2async__stream_8h_source.html">async_stream.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a42b8329c9a8bf18528fee8a3776db3d6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#a42b8329c9a8bf18528fee8a3776db3d6">StartCall</a> (void *tag) override</td></tr>
<tr class="memdesc:a42b8329c9a8bf18528fee8a3776db3d6"><td class="mdescLeft">&#160;</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="#a42b8329c9a8bf18528fee8a3776db3d6">More...</a><br/></td></tr>
<tr class="separator:a42b8329c9a8bf18528fee8a3776db3d6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a02f613eaaed4177f1682da3f5eebbdeb"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#a02f613eaaed4177f1682da3f5eebbdeb">ReadInitialMetadata</a> (void *tag) override</td></tr>
<tr class="memdesc:a02f613eaaed4177f1682da3f5eebbdeb"><td class="mdescLeft">&#160;</td><td class="mdescRight">See the <em>ClientAsyncStreamingInterface.ReadInitialMetadata</em> method for semantics.  <a href="#a02f613eaaed4177f1682da3f5eebbdeb">More...</a><br/></td></tr>
<tr class="separator:a02f613eaaed4177f1682da3f5eebbdeb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0e981b6dcce663e655edf305573f2f30"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#a0e981b6dcce663e655edf305573f2f30">Write</a> (const W &amp;msg, void *tag) override</td></tr>
<tr class="memdesc:a0e981b6dcce663e655edf305573f2f30"><td class="mdescLeft">&#160;</td><td class="mdescRight">Request the writing of <em>msg</em> with identifying tag <em>tag</em>.  <a href="#a0e981b6dcce663e655edf305573f2f30">More...</a><br/></td></tr>
<tr class="separator:a0e981b6dcce663e655edf305573f2f30"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3f3d8e3e47b7181f7312fd6e3eb32674"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#a3f3d8e3e47b7181f7312fd6e3eb32674">Write</a> (const W &amp;msg, <a class="el" href="classgrpc_1_1_write_options.html">WriteOptions</a> options, void *tag) override</td></tr>
<tr class="memdesc:a3f3d8e3e47b7181f7312fd6e3eb32674"><td class="mdescLeft">&#160;</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="#a3f3d8e3e47b7181f7312fd6e3eb32674">More...</a><br/></td></tr>
<tr class="separator:a3f3d8e3e47b7181f7312fd6e3eb32674"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9fd5cd7dedd73d878a86de84c58e8ff"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#ab9fd5cd7dedd73d878a86de84c58e8ff">WritesDone</a> (void *tag) override</td></tr>
<tr class="memdesc:ab9fd5cd7dedd73d878a86de84c58e8ff"><td class="mdescLeft">&#160;</td><td class="mdescRight">Signal the client is done with the writes (half-close the client stream).  <a href="#ab9fd5cd7dedd73d878a86de84c58e8ff">More...</a><br/></td></tr>
<tr class="separator:ab9fd5cd7dedd73d878a86de84c58e8ff"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0bcd44cd9303fae2ab19bfed22766be3"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#a0bcd44cd9303fae2ab19bfed22766be3">Finish</a> (<a class="el" href="classgrpc_1_1_status.html">Status</a> *status, void *tag) override</td></tr>
<tr class="memdesc:a0bcd44cd9303fae2ab19bfed22766be3"><td class="mdescLeft">&#160;</td><td class="mdescRight">See the <em>ClientAsyncStreamingInterface.Finish</em> method for semantics.  <a href="#a0bcd44cd9303fae2ab19bfed22766be3">More...</a><br/></td></tr>
<tr class="separator:a0bcd44cd9303fae2ab19bfed22766be3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<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="-"/>&#160;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>
<tr class="memitem:a5691ad84f8160a3eb10131f1f5de4708 inherit pub_methods_classgrpc_1_1internal_1_1_client_async_streaming_interface"><td class="memItemLeft" align="right" valign="top">virtual&#160;</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>
<tr class="separator:a5691ad84f8160a3eb10131f1f5de4708 inherit pub_methods_classgrpc_1_1internal_1_1_client_async_streaming_interface"><td class="memSeparator" colspan="2">&#160;</td></tr>
<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="-"/>&#160;Public Member Functions inherited from <a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html">grpc::internal::AsyncWriterInterface&lt; W &gt;</a></td></tr>
<tr class="memitem:a8ad846091252c112c4db0b41965e5a4c inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memItemLeft" align="right" valign="top">virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html#a8ad846091252c112c4db0b41965e5a4c">~AsyncWriterInterface</a> ()</td></tr>
<tr class="separator:a8ad846091252c112c4db0b41965e5a4c inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a02565abb7c6b4a7a49c0b29159194b66 inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_async_writer_interface.html#a02565abb7c6b4a7a49c0b29159194b66">WriteLast</a> (const W &amp;msg, <a class="el" href="classgrpc_1_1_write_options.html">WriteOptions</a> options, void *tag)</td></tr>
<tr class="memdesc:a02565abb7c6b4a7a49c0b29159194b66 inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="mdescLeft">&#160;</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="#a02565abb7c6b4a7a49c0b29159194b66">More...</a><br/></td></tr>
<tr class="separator:a02565abb7c6b4a7a49c0b29159194b66 inherit pub_methods_classgrpc_1_1internal_1_1_async_writer_interface"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:a38cfef152cb45c498cac2134fc5d263c"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#a38cfef152cb45c498cac2134fc5d263c">operator delete</a> (void *ptr, std::size_t size)</td></tr>
<tr class="separator:a38cfef152cb45c498cac2134fc5d263c"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a>
Friends</h2></td></tr>
<tr class="memitem:a5e0a3f0980c67fa6bdb0affd2659b8d2"><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_async_writer.html#a5e0a3f0980c67fa6bdb0affd2659b8d2">internal::ClientAsyncWriterFactory&lt; W &gt;</a></td></tr>
<tr class="separator:a5e0a3f0980c67fa6bdb0affd2659b8d2"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;class W&gt;<br/>
class grpc::ClientAsyncWriter&lt; W &gt;</h3>

<p>Async API on the client side for doing client-streaming RPCs, where the outgoing message stream going to the server contains messages of type <em>W</em>. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="a0bcd44cd9303fae2ab19bfed22766be3"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;class W &gt; </div>
<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">void <a class="el" href="classgrpc_1_1_client_async_writer.html">grpc::ClientAsyncWriter</a>&lt; W &gt;::Finish </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="classgrpc_1_1_status.html">Status</a> *&#160;</td>
          <td class="paramname"><em>status</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>tag</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">override</span><span class="mlabel">virtual</span></span>  </td>
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</div><div class="memdoc">

<p>See the <em>ClientAsyncStreamingInterface.Finish</em> method for semantics. </p>
<p>Side effect:</p>
<ul>
<li>the <em><a class="el" href="classgrpc_1_1_client_context.html" title="A ClientContext allows the person implementing a service client to: ">ClientContext</a></em> associated with this call is updated with possible initial and trailing metadata received from the server.</li>
<li>attempts to fill in the <em>response</em> parameter passed to this class's constructor with the server's response message. </li>
</ul>

<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#ad83ce06905fe819ae1e6b5b85e437642">grpc::internal::ClientAsyncStreamingInterface</a>.</p>

</div>
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<div class="memtemplate">
template&lt;class W &gt; </div>
<table class="mlabels">
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  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">static void <a class="el" href="classgrpc_1_1_client_async_writer.html">grpc::ClientAsyncWriter</a>&lt; W &gt;::operator delete </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">std::size_t&#160;</td>
          <td class="paramname"><em>size</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span>  </td>
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</div><div class="memdoc">

</div>
</div>
<a class="anchor" id="a02f613eaaed4177f1682da3f5eebbdeb"></a>
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template&lt;class W &gt; </div>
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          <td class="memname">void <a class="el" href="classgrpc_1_1_client_async_writer.html">grpc::ClientAsyncWriter</a>&lt; W &gt;::ReadInitialMetadata </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>tag</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
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<p>See the <em>ClientAsyncStreamingInterface.ReadInitialMetadata</em> method for semantics. </p>
<p>Side effect:</p>
<ul>
<li>upon receiving initial metadata from the server, the <em><a class="el" href="classgrpc_1_1_client_context.html" title="A ClientContext allows the person implementing a service client to: ">ClientContext</a></em> associated with this call is updated, and the calling code can access the received metadata through the <em><a class="el" href="classgrpc_1_1_client_context.html" title="A ClientContext allows the person implementing a service client to: ">ClientContext</a></em>. </li>
</ul>

<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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          <td class="memname">void <a class="el" href="classgrpc_1_1_client_async_writer.html">grpc::ClientAsyncWriter</a>&lt; W &gt;::StartCall </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</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>

<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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          <td class="memname">void <a class="el" href="classgrpc_1_1_client_async_writer.html">grpc::ClientAsyncWriter</a>&lt; W &gt;::Write </td>
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          <td class="paramname"><em>msg</em>, </td>
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<p>Request the writing of <em>msg</em> with identifying tag <em>tag</em>. </p>
<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>
<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>
    <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#aa61e21fdfef0a4fb34f595bef767e6a8">grpc::internal::AsyncWriterInterface&lt; W &gt;</a>.</p>

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          <td class="memname">void <a class="el" href="classgrpc_1_1_client_async_writer.html">grpc::ClientAsyncWriter</a>&lt; W &gt;::Write </td>
          <td>(</td>
          <td class="paramtype">const W &amp;&#160;</td>
          <td class="paramname"><em>msg</em>, </td>
        </tr>
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          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>tag</em>&#160;</td>
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          <td>)</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>
<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>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">msg</td><td>The message to be written. </td></tr>
    <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>
    <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&lt; W &gt;</a>.</p>

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          <td class="memname">void <a class="el" href="classgrpc_1_1_client_async_writer.html">grpc::ClientAsyncWriter</a>&lt; W &gt;::WritesDone </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>tag</em></td><td>)</td>
          <td></td>
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<p>Signal the client is done with the writes (half-close the client stream). </p>
<p>Thread-safe with respect to <em>AsyncReaderInterface::Read</em> </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">tag</td><td>The tag identifying the operation. </td></tr>
  </table>
  </dd>
</dl>

<p>Implements <a class="el" href="classgrpc_1_1_client_async_writer_interface.html#a488d42d85f8e34902401e013572ff822">grpc::ClientAsyncWriterInterface&lt; W &gt;</a>.</p>

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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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          <td class="memname">friend class <a class="el" href="classgrpc_1_1internal_1_1_client_async_writer_factory.html">internal::ClientAsyncWriterFactory</a>&lt; W &gt;</td>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>include/grpc++/impl/codegen/<a class="el" href="impl_2codegen_2async__stream_8h_source.html">async_stream.h</a></li>
</ul>
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