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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_server_reader.html">ServerReader</a></li>  </ul>
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<p>Synchronous (blocking) server-side API for doing client-streaming RPCs, where the incoming message stream coming from the client has messages of type <em>R</em>.  
 <a href="classgrpc_1_1_server_reader.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="impl_2codegen_2completion__queue_8h_source.html">completion_queue.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:a9485c2aa06bad8ca0650bfeafa35e2e4"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_server_reader.html#a9485c2aa06bad8ca0650bfeafa35e2e4">SendInitialMetadata</a> () override</td></tr>
<tr class="memdesc:a9485c2aa06bad8ca0650bfeafa35e2e4"><td class="mdescLeft">&#160;</td><td class="mdescRight">See the <em>ServerStreamingInterface.SendInitialMetadata</em> method for semantics.  <a href="#a9485c2aa06bad8ca0650bfeafa35e2e4">More...</a><br/></td></tr>
<tr class="separator:a9485c2aa06bad8ca0650bfeafa35e2e4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aba6ffb98a646c122a4b5e8a53e969d7e"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_server_reader.html#aba6ffb98a646c122a4b5e8a53e969d7e">NextMessageSize</a> (uint32_t *sz) override</td></tr>
<tr class="memdesc:aba6ffb98a646c122a4b5e8a53e969d7e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get an upper bound on the next message size available for reading on this stream.  <a href="#aba6ffb98a646c122a4b5e8a53e969d7e">More...</a><br/></td></tr>
<tr class="separator:aba6ffb98a646c122a4b5e8a53e969d7e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aefba84a0fc0d5cef5be843e0fb08e1d5"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_server_reader.html#aefba84a0fc0d5cef5be843e0fb08e1d5">Read</a> (R *msg) override</td></tr>
<tr class="memdesc:aefba84a0fc0d5cef5be843e0fb08e1d5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Block to read a message and parse to <em>msg</em>.  <a href="#aefba84a0fc0d5cef5be843e0fb08e1d5">More...</a><br/></td></tr>
<tr class="separator:aefba84a0fc0d5cef5be843e0fb08e1d5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_classgrpc_1_1internal_1_1_server_streaming_interface"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classgrpc_1_1internal_1_1_server_streaming_interface')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classgrpc_1_1internal_1_1_server_streaming_interface.html">grpc::internal::ServerStreamingInterface</a></td></tr>
<tr class="memitem:a2eef7573013077505dd7e22b3672acc5 inherit pub_methods_classgrpc_1_1internal_1_1_server_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_server_streaming_interface.html#a2eef7573013077505dd7e22b3672acc5">~ServerStreamingInterface</a> ()</td></tr>
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<tr class="inherit_header pub_methods_classgrpc_1_1internal_1_1_reader_interface"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classgrpc_1_1internal_1_1_reader_interface')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classgrpc_1_1internal_1_1_reader_interface.html">grpc::internal::ReaderInterface&lt; R &gt;</a></td></tr>
<tr class="memitem:ad1d28c0720937a61b0f7952d3add7bba inherit pub_methods_classgrpc_1_1internal_1_1_reader_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_reader_interface.html#ad1d28c0720937a61b0f7952d3add7bba">~ReaderInterface</a> ()</td></tr>
<tr class="separator:ad1d28c0720937a61b0f7952d3add7bba inherit pub_methods_classgrpc_1_1internal_1_1_reader_interface"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Friends</h2></td></tr>
<tr class="memitem:a420e7af1f016c295b28389810b472ea5"><td class="memTemplParams" colspan="2">template&lt;class ServiceType , class RequestType , class ResponseType &gt; </td></tr>
<tr class="memitem:a420e7af1f016c295b28389810b472ea5"><td class="memTemplItemLeft" align="right" valign="top">class&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_server_reader.html#a420e7af1f016c295b28389810b472ea5">internal::ClientStreamingHandler</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;class R&gt;<br/>
class grpc::ServerReader&lt; R &gt;</h3>

<p>Synchronous (blocking) server-side API for doing client-streaming RPCs, where the incoming message stream coming from the client has messages of type <em>R</em>. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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template&lt;class R&gt; </div>
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          <td class="memname">bool <a class="el" href="classgrpc_1_1_server_reader.html">grpc::ServerReader</a>&lt; R &gt;::NextMessageSize </td>
          <td>(</td>
          <td class="paramtype">uint32_t *&#160;</td>
          <td class="paramname"><em>sz</em></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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<p>Get an upper bound on the next message size available for reading on this stream. </p>

<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_reader_interface.html#ad3216783fae57e614181e28df9435f33">grpc::internal::ReaderInterface&lt; R &gt;</a>.</p>

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template&lt;class R&gt; </div>
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          <td class="memname">bool <a class="el" href="classgrpc_1_1_server_reader.html">grpc::ServerReader</a>&lt; R &gt;::Read </td>
          <td>(</td>
          <td class="paramtype">R *&#160;</td>
          <td class="paramname"><em>msg</em></td><td>)</td>
          <td></td>
        </tr>
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<p>Block to read a message and parse to <em>msg</em>. </p>
<p>Returns <em>true</em> on success. This is thread-safe with respect to <em>Write</em> or  methods on the same stream. It should not be called concurrently with another <em>Read</em> on the same stream as the order of delivery will not be defined.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">msg</td><td>The read message.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><em>false</em> when there will be no more incoming messages, either because the other side has called <em>WritesDone()</em> or the stream has failed (or been cancelled). </dd></dl>

<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_reader_interface.html#adfb50ace59b4b9666a46548d3f732ee8">grpc::internal::ReaderInterface&lt; R &gt;</a>.</p>

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template&lt;class R&gt; </div>
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          <td class="memname">void <a class="el" href="classgrpc_1_1_server_reader.html">grpc::ServerReader</a>&lt; R &gt;::SendInitialMetadata </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
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<p>See the <em>ServerStreamingInterface.SendInitialMetadata</em> method for semantics. </p>
<p>Note that initial metadata will be affected by the <em><a class="el" href="classgrpc_1_1_server_context.html" title="A ServerContext allows the person implementing a service handler to: ">ServerContext</a></em> associated with this call. </p>

<p>Implements <a class="el" href="classgrpc_1_1internal_1_1_server_streaming_interface.html#a45ab1e968a08b6c905ffac9a41e894d4">grpc::internal::ServerStreamingInterface</a>.</p>

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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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<div class="memproto">
<div class="memtemplate">
template&lt;class R&gt; </div>
<div class="memtemplate">
template&lt;class ServiceType , class RequestType , class ResponseType &gt; </div>
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  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">friend class <a class="el" href="classgrpc_1_1internal_1_1_client_streaming_handler.html">internal::ClientStreamingHandler</a></td>
        </tr>
      </table>
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  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">friend</span></span>  </td>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li>include/grpc++/impl/codegen/<a class="el" href="impl_2codegen_2completion__queue_8h_source.html">completion_queue.h</a></li>
<li>include/grpc++/impl/codegen/<a class="el" href="impl_2codegen_2sync__stream_8h_source.html">sync_stream.h</a></li>
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