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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">io.grpc</a></div>
<h2 title="Class Channel" class="title">Class Channel</h2>
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<li>io.grpc.Channel</li>
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<dd><code><a href="ManagedChannel.html" title="class in io.grpc">ManagedChannel</a></code></dd>
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<pre>@ThreadSafe
public abstract class <span class="typeNameLabel">Channel</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></pre>
<div class="block">A virtual connection to a conceptual endpoint, to perform RPCs. A channel is free to have zero or
many actual connections to the endpoint based on configuration, load, etc. A channel is also free
to determine which actual endpoints to use and may change it every RPC, permitting client-side
load balancing. Applications are generally expected to use stubs instead of calling this class
directly.
<p>Applications can add common cross-cutting behaviors to stubs by decorating Channel
implementations using <a href="ClientInterceptor.html" title="interface in io.grpc"><code>ClientInterceptor</code></a>. It is expected that most application
code will not use this class directly but rather work with stubs that have been bound to a
Channel that was decorated during application initialization.</div>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">Channel</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#authority()">authority</a></span>()</code></th>
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<div class="block">The authority of the destination this channel connects to.</div>
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<td class="colFirst"><code>abstract &lt;RequestT,&#8203;ResponseT&gt;<br><a href="ClientCall.html" title="class in io.grpc">ClientCall</a>&lt;RequestT,&#8203;ResponseT&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newCall(io.grpc.MethodDescriptor,io.grpc.CallOptions)">newCall</a></span>&#8203;(<a href="MethodDescriptor.html" title="class in io.grpc">MethodDescriptor</a>&lt;RequestT,&#8203;ResponseT&gt;&nbsp;methodDescriptor,
<a href="CallOptions.html" title="class in io.grpc">CallOptions</a>&nbsp;callOptions)</code></th>
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<div class="block">Create a <a href="ClientCall.html" title="class in io.grpc"><code>ClientCall</code></a> to the remote operation specified by the given
<a href="MethodDescriptor.html" title="class in io.grpc"><code>MethodDescriptor</code></a>.</div>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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<h4>Channel</h4>
<pre>public&nbsp;Channel()</pre>
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<pre class="methodSignature">public abstract&nbsp;&lt;RequestT,&#8203;ResponseT&gt;&nbsp;<a href="ClientCall.html" title="class in io.grpc">ClientCall</a>&lt;RequestT,&#8203;ResponseT&gt;&nbsp;newCall&#8203;(<a href="MethodDescriptor.html" title="class in io.grpc">MethodDescriptor</a>&lt;RequestT,&#8203;ResponseT&gt;&nbsp;methodDescriptor,
<a href="CallOptions.html" title="class in io.grpc">CallOptions</a>&nbsp;callOptions)</pre>
<div class="block">Create a <a href="ClientCall.html" title="class in io.grpc"><code>ClientCall</code></a> to the remote operation specified by the given
<a href="MethodDescriptor.html" title="class in io.grpc"><code>MethodDescriptor</code></a>. The returned <a href="ClientCall.html" title="class in io.grpc"><code>ClientCall</code></a> does not trigger any remote
behavior until <a href="ClientCall.html#start(io.grpc.ClientCall.Listener,io.grpc.Metadata)"><code>ClientCall.start(ClientCall.Listener, Metadata)</code></a> is
invoked.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>methodDescriptor</code> - describes the name and parameter types of the operation to call.</dd>
<dd><code>callOptions</code> - runtime options to be applied to this call.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <a href="ClientCall.html" title="class in io.grpc"><code>ClientCall</code></a> bound to the specified method.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0.0</dd>
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<h4>authority</h4>
<pre class="methodSignature">public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;authority()</pre>
<div class="block">The authority of the destination this channel connects to. Typically this is in the format
<code>host:port</code>.</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0.0</dd>
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