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<li class="navelem"><a class="el" href="namespacegrpc.html">grpc</a></li><li class="navelem"><a class="el" href="namespacegrpc_1_1internal.html">internal</a></li><li class="navelem"><a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html">ClientAsyncStreamingInterface</a></li>  </ul>
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<a href="#pub-methods">Public Member Functions</a>  </div>
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<div class="title">grpc::internal::ClientAsyncStreamingInterface Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div>  </div>
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<p>Common interface for all client side asynchronous streaming.  
 <a href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="grpcpp_2impl_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:a5691ad84f8160a3eb10131f1f5de4708"><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"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2bd65338b34000980fa048911c577637"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#a2bd65338b34000980fa048911c577637">StartCall</a> (void *tag)=0</td></tr>
<tr class="memdesc:a2bd65338b34000980fa048911c577637"><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="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#a2bd65338b34000980fa048911c577637">More...</a><br /></td></tr>
<tr class="separator:a2bd65338b34000980fa048911c577637"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab5a35e289028ac2aaf062572ba6d567d"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#ab5a35e289028ac2aaf062572ba6d567d">ReadInitialMetadata</a> (void *tag)=0</td></tr>
<tr class="memdesc:ab5a35e289028ac2aaf062572ba6d567d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Request notification of the reading of the initial metadata.  <a href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#ab5a35e289028ac2aaf062572ba6d567d">More...</a><br /></td></tr>
<tr class="separator:ab5a35e289028ac2aaf062572ba6d567d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0c4fd4be2228fa196ae446502828e23a"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#a0c4fd4be2228fa196ae446502828e23a">Finish</a> (::<a class="el" href="classgrpc_1_1_status.html">grpc::Status</a> *status, void *tag)=0</td></tr>
<tr class="memdesc:a0c4fd4be2228fa196ae446502828e23a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indicate that the stream is to be finished and request notification for when the call has been ended.  <a href="classgrpc_1_1internal_1_1_client_async_streaming_interface.html#a0c4fd4be2228fa196ae446502828e23a">More...</a><br /></td></tr>
<tr class="separator:a0c4fd4be2228fa196ae446502828e23a"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Common interface for all client side asynchronous streaming. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a5691ad84f8160a3eb10131f1f5de4708"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5691ad84f8160a3eb10131f1f5de4708">&#9670;&nbsp;</a></span>~ClientAsyncStreamingInterface()</h2>

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          <td class="memname">virtual grpc::internal::ClientAsyncStreamingInterface::~ClientAsyncStreamingInterface </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a0c4fd4be2228fa196ae446502828e23a">&#9670;&nbsp;</a></span>Finish()</h2>

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          <td class="memname">virtual void grpc::internal::ClientAsyncStreamingInterface::Finish </td>
          <td>(</td>
          <td class="paramtype">::<a class="el" href="classgrpc_1_1_status.html">grpc::Status</a> *&#160;</td>
          <td class="paramname"><em>status</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>tag</em>&#160;</td>
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          <td></td>
          <td>)</td>
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<p>Indicate that the stream is to be finished and request notification for when the call has been ended. </p>
<p>Should not be used concurrently with other operations.</p>
<p>It is appropriate to call this method exactly once when both:</p><ul>
<li>the client side has no more message to send (this can be declared implicitly by calling this method, or explicitly through an earlier call to the <em>WritesDone</em> method of the class in use, e.g. <em><a class="el" href="classgrpc_1_1_client_async_writer_interface.html#a488d42d85f8e34902401e013572ff822" title="Signal the client is done with the writes (half-close the client stream).">ClientAsyncWriterInterface::WritesDone</a></em> or <em><a class="el" href="classgrpc_1_1_client_async_reader_writer_interface.html#a878193880df68ab969b697f1fcd7dbc3" title="Signal the client is done with the writes (half-close the client stream).">ClientAsyncReaderWriterInterface::WritesDone</a></em>).</li>
<li>there are no more messages to be received from the server (this can be known implicitly by the calling code, or explicitly from an earlier call to <em><a class="el" href="classgrpc_1_1internal_1_1_async_reader_interface.html#adf87c602036d69158950b7299d0aae70" title="Read a message of type R into msg.">AsyncReaderInterface::Read</a></em> that yielded a failed result, e.g. cq-&gt;Next(&amp;read_tag, &amp;ok) filled in 'ok' with 'false').</li>
</ul>
<p>The tag will be returned when either:</p><ul>
<li>all incoming messages have been read and the server has returned a status.</li>
<li>the server has returned a non-OK status.</li>
<li>the call failed for some reason and the library generated a status.</li>
</ul>
<p>Note that implementations of this method attempt to receive initial metadata from the server if initial metadata hasn't yet been received.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">tag</td><td>Tag identifying this request. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">status</td><td>To be updated with the operation status. </td></tr>
  </table>
  </dd>
</dl>

<p>Implemented in <a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a953d61a2b25473bb76c7038b940b87aa">grpc::ClientAsyncReaderWriter&lt; W, R &gt;</a>, <a class="el" href="classgrpc_1_1_client_async_writer.html#aa94f32feaf8200695b65f1628d0ddf50">grpc::ClientAsyncWriter&lt; W &gt;</a>, and <a class="el" href="classgrpc_1_1_client_async_reader.html#aacaaa56d3bcd0a7236c3d646e9b6d1d9">grpc::ClientAsyncReader&lt; R &gt;</a>.</p>

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<a id="ab5a35e289028ac2aaf062572ba6d567d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab5a35e289028ac2aaf062572ba6d567d">&#9670;&nbsp;</a></span>ReadInitialMetadata()</h2>

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          <td class="memname">virtual void grpc::internal::ClientAsyncStreamingInterface::ReadInitialMetadata </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>Request notification of the reading of the initial metadata. </p>
<p>Completion will be notified by <em>tag</em> on the associated completion queue. This call is optional, but if it is used, it cannot be used concurrently with or after the <em><a class="el" href="classgrpc_1_1internal_1_1_async_reader_interface.html#adf87c602036d69158950b7299d0aae70" title="Read a message of type R into msg.">AsyncReaderInterface::Read</a></em> method.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">tag</td><td>Tag identifying this request. </td></tr>
  </table>
  </dd>
</dl>

<p>Implemented in <a class="el" href="classgrpc_1_1_client_async_reader_writer.html#a169a2eb8bedfd7281b37c79fdd307eb2">grpc::ClientAsyncReaderWriter&lt; W, R &gt;</a>, <a class="el" href="classgrpc_1_1_client_async_writer.html#a02f613eaaed4177f1682da3f5eebbdeb">grpc::ClientAsyncWriter&lt; W &gt;</a>, and <a class="el" href="classgrpc_1_1_client_async_reader.html#a66e76c15ee94cf0c2892def9041210d1">grpc::ClientAsyncReader&lt; R &gt;</a>.</p>

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<a id="a2bd65338b34000980fa048911c577637"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2bd65338b34000980fa048911c577637">&#9670;&nbsp;</a></span>StartCall()</h2>

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          <td class="memname">virtual void grpc::internal::ClientAsyncStreamingInterface::StartCall </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>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>Implemented in <a class="el" href="classgrpc_1_1_client_async_reader_writer.html#ae72f68c240ac2cbca98b524e723bd05b">grpc::ClientAsyncReaderWriter&lt; W, R &gt;</a>, <a class="el" href="classgrpc_1_1_client_async_writer.html#a42b8329c9a8bf18528fee8a3776db3d6">grpc::ClientAsyncWriter&lt; W &gt;</a>, and <a class="el" href="classgrpc_1_1_client_async_reader.html#a1afd3a30d2d6182ebf13941089b683d6">grpc::ClientAsyncReader&lt; R &gt;</a>.</p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<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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