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	<title>Documentation Class: ClientDuplexStream</title>

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	<h1 class="page-title">Class: ClientDuplexStream</h1>
<section>

<header>
    
        <h2>
            <span class="ancestors"><a href="grpc.html">grpc</a>~</span>
        
        ClientDuplexStream
        </h2>
        
    
</header>


<article>
    <div class="container-overview">
    
        
<hr>
<dt>
    <h4 class="name" id="ClientDuplexStream"><span class="type-signature"></span>new ClientDuplexStream(call [, serialize] [, deserialize])</h4>
    
    
</dt>
<dd>

    
    <div class="description">
        <p>A stream that the client can read from or write to. Used for calls with
duplex streaming.</p>
    </div>
    

        <h5>Parameters:</h5>
        

<table class="params table table-striped">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th>Argument</th>
        

        <th>Default</th>
        

        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>call</code></td>
            

            <td class="type">
            
                
<span class="param-type">grpc.internal~Call</span>


            </td>

            
                <td class="attributes">
                

                </td>
            

                <td class="default">
                
                </td>
            

            <td class="description last"><p>Call object to proxy</p></td>
        </tr>

    
        <tr>
            
                <td class="name"><code>serialize</code></td>
            

            <td class="type">
            
                
<span class="param-type"><a href="grpc.html#~serialize">grpc~serialize</a></span>


            </td>

            
                <td class="attributes">
                
                    &lt;optional><br>
                

                </td>
            

                <td class="default">
                
                    identity
                
                </td>
            

            <td class="description last"><p>Serialization
    function for requests</p></td>
        </tr>

    
        <tr>
            
                <td class="name"><code>deserialize</code></td>
            

            <td class="type">
            
                
<span class="param-type"><a href="grpc.html#~deserialize">grpc~deserialize</a></span>


            </td>

            
                <td class="attributes">
                
                    &lt;optional><br>
                

                </td>
            

                <td class="default">
                
                    identity
                
                </td>
            

            <td class="description last"><p>Deserialization function for responses</p></td>
        </tr>

    
    </tbody>
</table>

    
<dl class="details">
    

</dl>


</dd>

    
    </div>

    
        <h3 class="subsection-title">Extends</h3>

        
    <ul>
        <li><a href="external-Duplex.html">external:Duplex</a></li>
    </ul>


        <h3 class="subsection-title">Methods</h3>

        <dl>
            
<hr>
<dt>
    <h4 class="name" id="cancel"><span class="type-signature"></span>cancel()</h4>
    
    
</dt>
<dd>

    
    <div class="description">
        <p>Cancel the ongoing call. Results in the call ending with a CANCELLED status,
unless it has already ended with some other status.</p>
    </div>
    

<dl class="details">
    

</dl>


</dd>

        
<hr>
<dt>
    <h4 class="name" id="getPeer"><span class="type-signature"></span>getPeer()</h4>
    
    
</dt>
<dd>

    
    <div class="description">
        <p>Get the endpoint this call/stream is connected to.</p>
    </div>
    

<dl class="details">
    

</dl>


    <h5>Returns:</h5>
    
            
<div class="param-desc">
    <p>The URI of the endpoint</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">string</span>


    </dd>
</dl>


</dd>

        
<hr>
<dt>
    <h4 class="name" id="write"><span class="type-signature"></span>write(message, flags, callback)</h4>
    
    
</dt>
<dd>

    
    <div class="description">
        <p>Write a message to the request stream. If serializing the argument fails,
the call will be cancelled and the stream will end with an error.</p>
    </div>
    

        <h5>Parameters:</h5>
        

<table class="params table table-striped">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>message</code></td>
            

            <td class="type">
            
                
<span class="param-type">*</span>


            </td>

            
            <td class="description last"><p>The message to write. Must be a valid argument to the
    serialize function of the corresponding method</p></td>
        </tr>

    
        <tr>
            
                <td class="name"><code>flags</code></td>
            

            <td class="type">
            
                
<span class="param-type"><a href="grpc.html#.writeFlags">grpc.writeFlags</a></span>


            </td>

            
            <td class="description last"><p>Flags to modify how the message is written</p></td>
        </tr>

    
        <tr>
            
                <td class="name"><code>callback</code></td>
            

            <td class="type">
            
                
<span class="param-type">function</span>


            </td>

            
            <td class="description last"><p>Callback for when this chunk of data is flushed</p></td>
        </tr>

    
    </tbody>
</table>

    
<dl class="details">
    

</dl>


    <h5>Returns:</h5>
    
            
<div class="param-desc">
    <p>As defined for <a href="external-Writable.html">Writable</a></p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">boolean</span>


    </dd>
</dl>


</dd>

        </dl>
    

        <h3 class="subsection-title">Events</h3>

        <dl>
            
<hr>
<dt>
    <h4 class="name" id="event:metadata">metadata</h4>
    
    
</dt>
<dd>

    
    <div class="description">
        <p>Initial response metadata sent by the server when it starts processing the
call</p>
    </div>
    

        <h5>Type: 
<span class="param-type"><a href="grpc.Metadata.html">grpc.Metadata</a></span>


</h5>
    

<dl class="details">
    

</dl>


</dd>

        
<hr>
<dt>
    <h4 class="name" id="event:status">status</h4>
    
    
</dt>
<dd>

    
    <div class="description">
        <p>Status of the call when it has completed.</p>
    </div>
    

        <h5>Type: 
<span class="param-type"><a href="grpc.html#~StatusObject">grpc~StatusObject</a></span>


</h5>
    

<dl class="details">
    

</dl>


</dd>

        </dl>
    
</article>

</section>


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