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<div class="subTitle">net.jini.discovery</div>
<h2 title="Class AbstractLookupDiscovery.Requestor" class="title">Class AbstractLookupDiscovery.Requestor</h2>
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<li>net.jini.discovery.AbstractLookupDiscovery.Requestor</li>
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<dt>All Implemented Interfaces:</dt>
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<dt>Enclosing class:</dt>
<dd><a href="../../../net/jini/discovery/AbstractLookupDiscovery.html" title="class in net.jini.discovery">AbstractLookupDiscovery</a></dd>
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<pre>private class <span class="typeNameLabel">AbstractLookupDiscovery.Requestor</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true" title="class or interface in java.lang">Thread</a></pre>
<div class="block">Thread that periodically sends out multicast requests for a limited
period of time, and then exits.
<p>
An instance of this thread is run at startup, and each time the
set of groups to discover is changed.</div>
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<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.State.html?is-external=true" title="class or interface in java.lang">Thread.State</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.UncaughtExceptionHandler.html?is-external=true" title="class or interface in java.lang">Thread.UncaughtExceptionHandler</a></code></li>
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<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/discovery/AbstractLookupDiscovery.Requestor.html#delayFlag">delayFlag</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/discovery/AbstractLookupDiscovery.Requestor.html#groups">groups</a></span></code>
<div class="block">Groups to request</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/discovery/AbstractLookupDiscovery.Requestor.html#responsePort">responsePort</a></span></code>
<div class="block">Unicast response port</div>
</td>
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<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/6/docs/api/java/net/MulticastSocket.html?is-external=true" title="class or interface in java.net">MulticastSocket</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/discovery/AbstractLookupDiscovery.Requestor.html#sock">sock</a></span></code>
<div class="block">Multicast socket for sending packets</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../net/jini/discovery/AbstractLookupDiscovery.Requestor.html#Requestor-java.lang.String:A-int-boolean-">Requestor</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;groups,
int&nbsp;port,
boolean&nbsp;delayFlag)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/discovery/AbstractLookupDiscovery.Requestor.html#run--">run</a></span>()</code>
<div class="block">This method sends out N (for small N) multicast requests.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true" title="class or interface in java.lang">Thread</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#activeCount--" title="class or interface in java.lang">activeCount</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#checkAccess--" title="class or interface in java.lang">checkAccess</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#countStackFrames--" title="class or interface in java.lang">countStackFrames</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#currentThread--" title="class or interface in java.lang">currentThread</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#destroy--" title="class or interface in java.lang">destroy</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#dumpStack--" title="class or interface in java.lang">dumpStack</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#enumerate-java.lang.Thread:A-" title="class or interface in java.lang">enumerate</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getAllStackTraces--" title="class or interface in java.lang">getAllStackTraces</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getContextClassLoader--" title="class or interface in java.lang">getContextClassLoader</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getDefaultUncaughtExceptionHandler--" title="class or interface in java.lang">getDefaultUncaughtExceptionHandler</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getId--" title="class or interface in java.lang">getId</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getName--" title="class or interface in java.lang">getName</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getPriority--" title="class or interface in java.lang">getPriority</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getStackTrace--" title="class or interface in java.lang">getStackTrace</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getState--" title="class or interface in java.lang">getState</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getThreadGroup--" title="class or interface in java.lang">getThreadGroup</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getUncaughtExceptionHandler--" title="class or interface in java.lang">getUncaughtExceptionHandler</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#holdsLock-java.lang.Object-" title="class or interface in java.lang">holdsLock</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#interrupt--" title="class or interface in java.lang">interrupt</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#interrupted--" title="class or interface in java.lang">interrupted</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#isAlive--" title="class or interface in java.lang">isAlive</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#isDaemon--" title="class or interface in java.lang">isDaemon</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#isInterrupted--" title="class or interface in java.lang">isInterrupted</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#join--" title="class or interface in java.lang">join</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#join-long-" title="class or interface in java.lang">join</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#join-long-int-" title="class or interface in java.lang">join</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#resume--" title="class or interface in java.lang">resume</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#setContextClassLoader-java.lang.ClassLoader-" title="class or interface in java.lang">setContextClassLoader</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#setDaemon-boolean-" title="class or interface in java.lang">setDaemon</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#setDefaultUncaughtExceptionHandler-java.lang.Thread.UncaughtExceptionHandler-" title="class or interface in java.lang">setDefaultUncaughtExceptionHandler</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#setName-java.lang.String-" title="class or interface in java.lang">setName</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#setPriority-int-" title="class or interface in java.lang">setPriority</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#setUncaughtExceptionHandler-java.lang.Thread.UncaughtExceptionHandler-" title="class or interface in java.lang">setUncaughtExceptionHandler</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#sleep-long-" title="class or interface in java.lang">sleep</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#sleep-long-int-" title="class or interface in java.lang">sleep</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#start--" title="class or interface in java.lang">start</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#stop--" title="class or interface in java.lang">stop</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#stop-java.lang.Throwable-" title="class or interface in java.lang">stop</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#suspend--" title="class or interface in java.lang">suspend</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#yield--" title="class or interface in java.lang">yield</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>sock</h4>
<pre>private final&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/net/MulticastSocket.html?is-external=true" title="class or interface in java.net">MulticastSocket</a> sock</pre>
<div class="block">Multicast socket for sending packets</div>
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<a name="responsePort">
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<h4>responsePort</h4>
<pre>private final&nbsp;int responsePort</pre>
<div class="block">Unicast response port</div>
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<a name="groups">
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<h4>groups</h4>
<pre>private final&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[] groups</pre>
<div class="block">Groups to request</div>
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<h4>delayFlag</h4>
<pre>private final&nbsp;boolean delayFlag</pre>
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<a name="Requestor-java.lang.String:A-int-boolean-">
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<h4>Requestor</h4>
<pre>public&nbsp;Requestor(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;groups,
int&nbsp;port,
boolean&nbsp;delayFlag)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>run</h4>
<pre>public&nbsp;void&nbsp;run()</pre>
<div class="block">This method sends out N (for small N) multicast requests. Until
the last request is sent out, this method sleeps for 5 seconds
after each request is sent. After the last request is sent,
this method sleeps for 2 minutes to allow the ResponseListener
time to receive and process any multicast responses sent in
reply to the multicast requests. Before sending a request, a
new multicast request is constructed so that updates
can be made to the set of service IDs of the lookup services
discovered due to previous requests.
<p>
After all requests have been sent, and the ResponseListener
has been given the appropriate time to receive and process
any multicast responses, if there are no more active instances
of this thread, this method terminates (interrupts) the
ResponseListener. Note that although it is more desirable to
have the ResponseListener set a timeout on the server socket
(using setSoTimeout) and then simply exit after a period of
time in which both the ResponseListener has been idle, and
there have been no active Requestor threads, using setSoTimeout
in this way can cause random hangs on the Solaris(TM) operating
system.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Runnable.html?is-external=true#run--" title="class or interface in java.lang">run</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang">Runnable</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#run--" title="class or interface in java.lang">run</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Thread.html?is-external=true" title="class or interface in java.lang">Thread</a></code></dd>
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