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<div class="subTitle">org.apache.commons.net.telnet</div>
<h2 title="Class TelnetOptionHandler" class="title">Class TelnetOptionHandler</h2>
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<li>org.apache.commons.net.telnet.TelnetOptionHandler</li>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/apache/commons/net/telnet/EchoOptionHandler.html" title="class in org.apache.commons.net.telnet">EchoOptionHandler</a>, <a href="../../../../../org/apache/commons/net/telnet/SimpleOptionHandler.html" title="class in org.apache.commons.net.telnet">SimpleOptionHandler</a>, <a href="../../../../../org/apache/commons/net/telnet/SuppressGAOptionHandler.html" title="class in org.apache.commons.net.telnet">SuppressGAOptionHandler</a>, <a href="../../../../../org/apache/commons/net/telnet/TerminalTypeOptionHandler.html" title="class in org.apache.commons.net.telnet">TerminalTypeOptionHandler</a>, <a href="../../../../../org/apache/commons/net/telnet/WindowSizeOptionHandler.html" title="class in org.apache.commons.net.telnet">WindowSizeOptionHandler</a></dd>
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<pre>public abstract class <span class="strong">TelnetOptionHandler</span>
extends <a href="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">The TelnetOptionHandler class is the base class to be used
 for implementing handlers for telnet options.
 <p>
 TelnetOptionHandler implements basic option handling
 functionality and defines abstract methods that must be
 implemented to define subnegotiation behaviour.
 <p></div>
<dl><dt><span class="strong">Author:</span></dt>
  <dd>Bruno D'Avanzo</dd></dl>
</li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#TelnetOptionHandler(int, boolean, boolean, boolean, boolean)">TelnetOptionHandler</a></strong>(int&nbsp;optcode,
                   boolean&nbsp;initlocal,
                   boolean&nbsp;initremote,
                   boolean&nbsp;acceptlocal,
                   boolean&nbsp;acceptremote)</code>
<div class="block">Constructor for the TelnetOptionHandler.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>abstract int[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#answerSubnegotiation(int[], int)">answerSubnegotiation</a></strong>(int[]&nbsp;suboptionData,
                    int&nbsp;suboptionLength)</code>
<div class="block">Method called upon reception of a subnegotiation for this option
 coming from the other end.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#getAcceptLocal()">getAcceptLocal</a></strong>()</code>
<div class="block">Returns a boolean indicating whether to accept a DO
 request coming from the other end.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#getAcceptRemote()">getAcceptRemote</a></strong>()</code>
<div class="block">Returns a boolean indicating whether to accept a WILL
 request coming from the other end.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#getInitLocal()">getInitLocal</a></strong>()</code>
<div class="block">Returns a boolean indicating whether to send a WILL request
 to the other end upon connection.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#getInitRemote()">getInitRemote</a></strong>()</code>
<div class="block">Returns a boolean indicating whether to send a DO request
 to the other end upon connection.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#getOptionCode()">getOptionCode</a></strong>()</code>
<div class="block">Returns the option code for this option.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#setAcceptLocal(boolean)">setAcceptLocal</a></strong>(boolean&nbsp;accept)</code>
<div class="block">Set behaviour of the option for DO requests coming from
 the other end.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#setAcceptRemote(boolean)">setAcceptRemote</a></strong>(boolean&nbsp;accept)</code>
<div class="block">Set behaviour of the option for WILL requests coming from
 the other end.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#setInitLocal(boolean)">setInitLocal</a></strong>(boolean&nbsp;init)</code>
<div class="block">Tells this option whether to send a WILL request upon connection.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#setInitRemote(boolean)">setInitRemote</a></strong>(boolean&nbsp;init)</code>
<div class="block">Tells this option whether to send a DO request upon connection.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>abstract int[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#startSubnegotiationLocal()">startSubnegotiationLocal</a></strong>()</code>
<div class="block">This method is invoked whenever this option is acknowledged active on
 the local end (TelnetClient sent a WILL, remote side sent a DO).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>abstract int[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/net/telnet/TelnetOptionHandler.html#startSubnegotiationRemote()">startSubnegotiationRemote</a></strong>()</code>
<div class="block">This method is invoked whenever this option is acknowledged active on
 the remote end (TelnetClient sent a DO, remote side sent a WILL).</div>
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<h4>TelnetOptionHandler</h4>
<pre>public&nbsp;TelnetOptionHandler(int&nbsp;optcode,
                   boolean&nbsp;initlocal,
                   boolean&nbsp;initremote,
                   boolean&nbsp;acceptlocal,
                   boolean&nbsp;acceptremote)</pre>
<div class="block">Constructor for the TelnetOptionHandler. Allows defining desired
 initial setting for local/remote activation of this option and
 behaviour in case a local/remote activation request for this
 option is received.
 <p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>optcode</code> - - Option code.</dd><dd><code>initlocal</code> - - if set to true, a WILL is sent upon connection.</dd><dd><code>initremote</code> - - if set to true, a DO is sent upon connection.</dd><dd><code>acceptlocal</code> - - if set to true, any DO request is accepted.</dd><dd><code>acceptremote</code> - - if set to true, any WILL request is accepted.</dd></dl>
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<h4>getOptionCode</h4>
<pre>public&nbsp;int&nbsp;getOptionCode()</pre>
<div class="block">Returns the option code for this option.
 <p></div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Option code.</dd></dl>
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<h4>getAcceptLocal</h4>
<pre>public&nbsp;boolean&nbsp;getAcceptLocal()</pre>
<div class="block">Returns a boolean indicating whether to accept a DO
 request coming from the other end.
 <p></div>
<dl><dt><span class="strong">Returns:</span></dt><dd>true if a DO request shall be accepted.</dd></dl>
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<pre>public&nbsp;boolean&nbsp;getAcceptRemote()</pre>
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 <p></div>
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<pre>public&nbsp;void&nbsp;setAcceptLocal(boolean&nbsp;accept)</pre>
<div class="block">Set behaviour of the option for DO requests coming from
 the other end.
 <p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>accept</code> - - if true, subsequent DO requests will be accepted.</dd></dl>
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<pre>public&nbsp;void&nbsp;setAcceptRemote(boolean&nbsp;accept)</pre>
<div class="block">Set behaviour of the option for WILL requests coming from
 the other end.
 <p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>accept</code> - - if true, subsequent WILL requests will be accepted.</dd></dl>
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<pre>public&nbsp;boolean&nbsp;getInitLocal()</pre>
<div class="block">Returns a boolean indicating whether to send a WILL request
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<pre>public&nbsp;void&nbsp;setInitLocal(boolean&nbsp;init)</pre>
<div class="block">Tells this option whether to send a WILL request upon connection.
 <p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>init</code> - - if true, a WILL request will be sent upon subsequent
 connections.</dd></dl>
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<pre>public&nbsp;void&nbsp;setInitRemote(boolean&nbsp;init)</pre>
<div class="block">Tells this option whether to send a DO request upon connection.
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<h4>answerSubnegotiation</h4>
<pre>public abstract&nbsp;int[]&nbsp;answerSubnegotiation(int[]&nbsp;suboptionData,
                         int&nbsp;suboptionLength)</pre>
<div class="block">Method called upon reception of a subnegotiation for this option
 coming from the other end.
 Must be implemented by the actual TelnetOptionHandler to specify
 which response must be sent for the subnegotiation request.
 <p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>suboptionData</code> - - the sequence received, whithout IAC SB & IAC SE</dd><dd><code>suboptionLength</code> - - the length of data in suboption_data
 <p></dd>
<dt><span class="strong">Returns:</span></dt><dd>response to be sent to the subnegotiation sequence. TelnetClient
 will add IAC SB & IAC SE. null means no response</dd></dl>
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<h4>startSubnegotiationLocal</h4>
<pre>public abstract&nbsp;int[]&nbsp;startSubnegotiationLocal()</pre>
<div class="block">This method is invoked whenever this option is acknowledged active on
 the local end (TelnetClient sent a WILL, remote side sent a DO).
 The method is used to specify a subnegotiation sequence that will be
 sent by TelnetClient when the option is activated.
 <p></div>
<dl><dt><span class="strong">Returns:</span></dt><dd>subnegotiation sequence to be sent by TelnetClient. TelnetClient
 will add IAC SB & IAC SE. null means no subnegotiation.</dd></dl>
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<h4>startSubnegotiationRemote</h4>
<pre>public abstract&nbsp;int[]&nbsp;startSubnegotiationRemote()</pre>
<div class="block">This method is invoked whenever this option is acknowledged active on
 the remote end (TelnetClient sent a DO, remote side sent a WILL).
 The method is used to specify a subnegotiation sequence that will be
 sent by TelnetClient when the option is activated.
 <p></div>
<dl><dt><span class="strong">Returns:</span></dt><dd>subnegotiation sequence to be sent by TelnetClient. TelnetClient
 will add IAC SB & IAC SE. null means no subnegotiation.</dd></dl>
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