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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_context.html">ClientContext</a></li>  </ul>
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<p><code>#include &lt;<a class="el" href="impl_2codegen_2client__context_8h_source.html">client_context.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context_1_1_global_callbacks.html">GlobalCallbacks</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Global Callbacks.  <a href="classgrpc_1_1_client_context_1_1_global_callbacks.html#details">More...</a><br/></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><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:acabbcf3c160a0628da8a9274b10f54b9"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#acabbcf3c160a0628da8a9274b10f54b9">ClientContext</a> ()</td></tr>
<tr class="separator:acabbcf3c160a0628da8a9274b10f54b9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aeb77ea760faf8f96e775812806c0a3d9"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#aeb77ea760faf8f96e775812806c0a3d9">~ClientContext</a> ()</td></tr>
<tr class="separator:aeb77ea760faf8f96e775812806c0a3d9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a69a026f073ef5934697568d689440bd4"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a69a026f073ef5934697568d689440bd4">AddMetadata</a> (const <a class="el" href="namespacegrpc.html#ab04a87625da3bf85cdaf5e7856b00203">grpc::string</a> &amp;meta_key, const <a class="el" href="namespacegrpc.html#ab04a87625da3bf85cdaf5e7856b00203">grpc::string</a> &amp;meta_value)</td></tr>
<tr class="memdesc:a69a026f073ef5934697568d689440bd4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Add the (<em>meta_key</em>, <em>meta_value</em>) pair to the metadata associated with a client call.  <a href="#a69a026f073ef5934697568d689440bd4">More...</a><br/></td></tr>
<tr class="separator:a69a026f073ef5934697568d689440bd4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3dd6ec0742cbc84e5a83acab009c5f38"><td class="memItemLeft" align="right" valign="top">const std::multimap<br class="typebreak"/>
&lt; <a class="el" href="classgrpc_1_1string__ref.html">grpc::string_ref</a>, <br class="typebreak"/>
<a class="el" href="classgrpc_1_1string__ref.html">grpc::string_ref</a> &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a3dd6ec0742cbc84e5a83acab009c5f38">GetServerInitialMetadata</a> ()</td></tr>
<tr class="memdesc:a3dd6ec0742cbc84e5a83acab009c5f38"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a collection of initial metadata key-value pairs.  <a href="#a3dd6ec0742cbc84e5a83acab009c5f38">More...</a><br/></td></tr>
<tr class="separator:a3dd6ec0742cbc84e5a83acab009c5f38"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a06cd5278c2d242bdd6a8f62fd6c87a93"><td class="memItemLeft" align="right" valign="top">const std::multimap<br class="typebreak"/>
&lt; <a class="el" href="classgrpc_1_1string__ref.html">grpc::string_ref</a>, <br class="typebreak"/>
<a class="el" href="classgrpc_1_1string__ref.html">grpc::string_ref</a> &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a06cd5278c2d242bdd6a8f62fd6c87a93">GetServerTrailingMetadata</a> ()</td></tr>
<tr class="memdesc:a06cd5278c2d242bdd6a8f62fd6c87a93"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a collection of trailing metadata key-value pairs.  <a href="#a06cd5278c2d242bdd6a8f62fd6c87a93">More...</a><br/></td></tr>
<tr class="separator:a06cd5278c2d242bdd6a8f62fd6c87a93"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad4e16866fee3f6ee5a10efb5be6f4da6"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
<tr class="memitem:ad4e16866fee3f6ee5a10efb5be6f4da6"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#ad4e16866fee3f6ee5a10efb5be6f4da6">set_deadline</a> (const T &amp;<a class="el" href="classgrpc_1_1_client_context.html#af29e0113f661e1fbbecc20c268a3be6e">deadline</a>)</td></tr>
<tr class="memdesc:ad4e16866fee3f6ee5a10efb5be6f4da6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set the deadline for the client call.  <a href="#ad4e16866fee3f6ee5a10efb5be6f4da6">More...</a><br/></td></tr>
<tr class="separator:ad4e16866fee3f6ee5a10efb5be6f4da6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af29e0113f661e1fbbecc20c268a3be6e"><td class="memItemLeft" align="right" valign="top">std::chrono::system_clock::time_point&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#af29e0113f661e1fbbecc20c268a3be6e">deadline</a> ()</td></tr>
<tr class="memdesc:af29e0113f661e1fbbecc20c268a3be6e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the deadline for the client call.  <a href="#af29e0113f661e1fbbecc20c268a3be6e">More...</a><br/></td></tr>
<tr class="separator:af29e0113f661e1fbbecc20c268a3be6e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5057cab6d547678dded90c024efab652"><td class="memItemLeft" align="right" valign="top">gpr_timespec&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a5057cab6d547678dded90c024efab652">raw_deadline</a> ()</td></tr>
<tr class="memdesc:a5057cab6d547678dded90c024efab652"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a <em>gpr_timespec</em> representation of the client call's deadline.  <a href="#a5057cab6d547678dded90c024efab652">More...</a><br/></td></tr>
<tr class="separator:a5057cab6d547678dded90c024efab652"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a43bb17bbd6ab49face3793e8883c5682"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a43bb17bbd6ab49face3793e8883c5682">set_authority</a> (const <a class="el" href="namespacegrpc.html#ab04a87625da3bf85cdaf5e7856b00203">grpc::string</a> &amp;authority)</td></tr>
<tr class="memdesc:a43bb17bbd6ab49face3793e8883c5682"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set the per call authority header (see <a href="https://tools.ietf.org/html/rfc7540#section-8.1.2.3">https://tools.ietf.org/html/rfc7540#section-8.1.2.3</a>).  <a href="#a43bb17bbd6ab49face3793e8883c5682">More...</a><br/></td></tr>
<tr class="separator:a43bb17bbd6ab49face3793e8883c5682"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a02f279bf74e26d7c32d0b18dc73dccea"><td class="memItemLeft" align="right" valign="top">std::shared_ptr&lt; const <br class="typebreak"/>
<a class="el" href="classgrpc_1_1_auth_context.html">AuthContext</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a02f279bf74e26d7c32d0b18dc73dccea">auth_context</a> () const </td></tr>
<tr class="memdesc:a02f279bf74e26d7c32d0b18dc73dccea"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the authentication context for this client call.  <a href="#a02f279bf74e26d7c32d0b18dc73dccea">More...</a><br/></td></tr>
<tr class="separator:a02f279bf74e26d7c32d0b18dc73dccea"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a768356886d37231b3f0853b3c38e48a9"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a768356886d37231b3f0853b3c38e48a9">set_credentials</a> (const std::shared_ptr&lt; <a class="el" href="classgrpc_1_1_call_credentials.html">CallCredentials</a> &gt; &amp;creds)</td></tr>
<tr class="memdesc:a768356886d37231b3f0853b3c38e48a9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set credentials for the client call.  <a href="#a768356886d37231b3f0853b3c38e48a9">More...</a><br/></td></tr>
<tr class="separator:a768356886d37231b3f0853b3c38e48a9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a91691d52182f45043ce9698424d26a56"><td class="memItemLeft" align="right" valign="top">grpc_compression_algorithm&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a91691d52182f45043ce9698424d26a56">compression_algorithm</a> () const </td></tr>
<tr class="memdesc:a91691d52182f45043ce9698424d26a56"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the compression algorithm to be used by the client call.  <a href="#a91691d52182f45043ce9698424d26a56">More...</a><br/></td></tr>
<tr class="separator:a91691d52182f45043ce9698424d26a56"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a67a71b32afe1d71189aa3a24146ec61d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a67a71b32afe1d71189aa3a24146ec61d">set_compression_algorithm</a> (grpc_compression_algorithm algorithm)</td></tr>
<tr class="memdesc:a67a71b32afe1d71189aa3a24146ec61d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set <em>algorithm</em> to be the compression algorithm used for the client call.  <a href="#a67a71b32afe1d71189aa3a24146ec61d">More...</a><br/></td></tr>
<tr class="separator:a67a71b32afe1d71189aa3a24146ec61d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a905d667d96613e022cd83c13dbedb4c3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacegrpc.html#ab04a87625da3bf85cdaf5e7856b00203">grpc::string</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a905d667d96613e022cd83c13dbedb4c3">peer</a> () const </td></tr>
<tr class="memdesc:a905d667d96613e022cd83c13dbedb4c3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the peer uri in a string.  <a href="#a905d667d96613e022cd83c13dbedb4c3">More...</a><br/></td></tr>
<tr class="separator:a905d667d96613e022cd83c13dbedb4c3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a48672c1e42084d2cd6975746b84658dd"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a48672c1e42084d2cd6975746b84658dd">set_census_context</a> (struct <a class="el" href="classgrpc_1_1_client_context.html#a958acd964fe9feb32bca775c96ad5117">census_context</a> *ccp)</td></tr>
<tr class="memdesc:a48672c1e42084d2cd6975746b84658dd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get and set census context.  <a href="#a48672c1e42084d2cd6975746b84658dd">More...</a><br/></td></tr>
<tr class="separator:a48672c1e42084d2cd6975746b84658dd"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a958acd964fe9feb32bca775c96ad5117"><td class="memItemLeft" align="right" valign="top">struct census_context *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a958acd964fe9feb32bca775c96ad5117">census_context</a> () const </td></tr>
<tr class="separator:a958acd964fe9feb32bca775c96ad5117"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abd0f6715c30287b75288015eee628984"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#abd0f6715c30287b75288015eee628984">TryCancel</a> ()</td></tr>
<tr class="memdesc:abd0f6715c30287b75288015eee628984"><td class="mdescLeft">&#160;</td><td class="mdescRight">Send a best-effort out-of-band cancel.  <a href="#abd0f6715c30287b75288015eee628984">More...</a><br/></td></tr>
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Static Public Member Functions</h2></td></tr>
<tr class="memitem:a88cbf7ae863d5fcb382c9e22160f4707"><td class="memItemLeft" align="right" valign="top">static std::unique_ptr<br class="typebreak"/>
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<tr class="memdesc:a88cbf7ae863d5fcb382c9e22160f4707"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a new <em><a class="el" href="classgrpc_1_1_client_context.html">ClientContext</a></em> as a child of an incoming server call, according to <em>options</em> (.  <a href="#a88cbf7ae863d5fcb382c9e22160f4707">More...</a><br/></td></tr>
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<tr class="memitem:ad329c9fdd77093361518ef8ace1ee1f0"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#ad329c9fdd77093361518ef8ace1ee1f0">SetGlobalCallbacks</a> (<a class="el" href="classgrpc_1_1_client_context_1_1_global_callbacks.html">GlobalCallbacks</a> *callbacks)</td></tr>
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Friends</h2></td></tr>
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<tr class="memitem:a4aac0a120f3498d1151460ef89ce8446"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classgrpc_1_1_status.html">Status</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classgrpc_1_1_client_context.html#a4aac0a120f3498d1151460ef89ce8446">BlockingUnaryCall</a> (<a class="el" href="classgrpc_1_1_channel_interface.html">ChannelInterface</a> *channel, const <a class="el" href="classgrpc_1_1_rpc_method.html">RpcMethod</a> &amp;method, <a class="el" href="classgrpc_1_1_client_context.html">ClientContext</a> *context, const InputMessage &amp;request, OutputMessage *result)</td></tr>
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<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="groupheader">Member Function Documentation</h2>
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<p>Add the (<em>meta_key</em>, <em>meta_value</em>) pair to the metadata associated with a client call. </p>
<p>These are made available at the server side by the <em><a class="el" href="classgrpc_1_1_server_context.html#a144de24bd56a8950676ba91913cc74ce">grpc::ServerContext::client_metadata()</a></em> method.</p>
<dl class="section warning"><dt>Warning</dt><dd>This method should only be called before invoking the rpc.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">meta_key</td><td>The metadata key. If <em>meta_value</em> is binary data, it must end in "-bin". </td></tr>
    <tr><td class="paramname">meta_value</td><td>The metadata value. If its value is binary, it must be base64-encoding (see <a href="https://tools.ietf.org/html/rfc4648#section-4">https://tools.ietf.org/html/rfc4648#section-4</a>) and <em>meta_key</em> must end in "-bin". </td></tr>
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<p>Return the authentication context for this client call. </p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classgrpc_1_1_auth_context.html" title="Class encapsulating the Authentication Information. ">grpc::AuthContext</a>. </dd></dl>

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<p>Return the compression algorithm to be used by the client call. </p>

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<p>Return the deadline for the client call. </p>

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          <td class="paramtype">const <a class="el" href="classgrpc_1_1_server_context.html">ServerContext</a> &amp;&#160;</td>
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<p>Create a new <em><a class="el" href="classgrpc_1_1_client_context.html">ClientContext</a></em> as a child of an incoming server call, according to <em>options</em> (. </p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classgrpc_1_1_propagation_options.html" title="Options for ClientContext::FromServerContext specifying which traits from the ServerContext to propag...">PropagationOptions</a>).</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">server_context</td><td>The source server context to use as the basis for constructing the client context. </td></tr>
    <tr><td class="paramname">options</td><td>The options controlling what to copy from the <em>server_context</em>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>A newly constructed <em><a class="el" href="classgrpc_1_1_client_context.html">ClientContext</a></em> instance based on <em>server_context</em>, with traits propagated (copied) according to <em>options</em>. </dd></dl>

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<p>Return a collection of initial metadata key-value pairs. </p>
<p>Note that keys may happen more than once (ie, a <em>std::multimap</em> is returned).</p>
<dl class="section warning"><dt>Warning</dt><dd>This method should only be called after initial metadata has been received. For streaming calls, see <em><a class="el" href="classgrpc_1_1_client_reader_interface.html#aee87dd6e3e8a40853207ceb53b590b19" title="Blocking wait for initial metadata from server. ">ClientReaderInterface::WaitForInitialMetadata()</a></em>.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>A multimap of initial metadata key-value pairs from the server. </dd></dl>

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<p>Return a collection of trailing metadata key-value pairs. </p>
<p>Note that keys may happen more than once (ie, a <em>std::multimap</em> is returned).</p>
<dl class="section warning"><dt>Warning</dt><dd>This method is only callable once the stream has finished.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>A multimap of metadata trailing key-value pairs from the server. </dd></dl>

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          <td class="memname"><a class="el" href="namespacegrpc.html#ab04a87625da3bf85cdaf5e7856b00203">grpc::string</a> grpc::ClientContext::peer </td>
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<p>Return the peer uri in a string. </p>
<dl class="section warning"><dt>Warning</dt><dd>This value is never authenticated or subject to any security related code. It must not be used for any authentication related functionality. Instead, use auth_context.</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>The call's peer URI. </dd></dl>

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<p>Return a <em>gpr_timespec</em> representation of the client call's deadline. </p>

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          <td class="memname">void grpc::ClientContext::set_authority </td>
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<p>Set the per call authority header (see <a href="https://tools.ietf.org/html/rfc7540#section-8.1.2.3">https://tools.ietf.org/html/rfc7540#section-8.1.2.3</a>). </p>

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<p>Get and set census context. </p>

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<p>Set <em>algorithm</em> to be the compression algorithm used for the client call. </p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">algorith</td><td>The compression algorithm used for the client call. </td></tr>
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<p>Set credentials for the client call. </p>
<p>A credentials object encapsulates all the state needed by a client to authenticate with a server and make various assertions, e.g., about the client’s identity, role, or whether it is authorized to make a particular call.</p>
<dl class="section see"><dt>See Also</dt><dd><a href="http://www.grpc.io/docs/guides/auth.html">http://www.grpc.io/docs/guides/auth.html</a> </dd></dl>

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<p>Set the deadline for the client call. </p>
<dl class="section warning"><dt>Warning</dt><dd>This method should only be called before invoking the rpc.</dd></dl>
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    <tr><td class="paramname">deadline</td><td>the deadline for the client call. Units are determined by the type used. </td></tr>
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          <td class="paramtype"><a class="el" href="classgrpc_1_1_client_context_1_1_global_callbacks.html">GlobalCallbacks</a> *&#160;</td>
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<p>Send a best-effort out-of-band cancel. </p>
<p>The call could be in any stage. e.g. if it is already finished, it may still return success.</p>
<p>There is no guarantee the call will be cancelled. </p>

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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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          <td class="memname"><a class="el" href="classgrpc_1_1_status.html">Status</a> BlockingUnaryCall </td>
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          <td class="paramname"><em>method</em>, </td>
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          <td class="paramname"><em>context</em>, </td>
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          <td class="paramname"><em>request</em>, </td>
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          <td class="paramtype">OutputMessage *&#160;</td>
          <td class="paramname"><em>result</em>&#160;</td>
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          <td>)</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_2client__context_8h_source.html">client_context.h</a></li>
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