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<head>
<title>Class: Net::SSH::Service::Forward::LocalNetworkHandler</title>
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<table width="100%" border='0' cellpadding='0' cellspacing='0' class='banner'><tr>
<td class="file-title"><span class="file-title-prefix">Class</span><br />Net::SSH::Service::Forward::LocalNetworkHandler</td>
<td align="right">
<table cellspacing=0 cellpadding=2>
<tr valign="top">
<td>In:</td>
<td>
<a href="../../../../../files/lib/net/ssh/service/forward/local-network-handler_rb.html">lib/net/ssh/service/forward/local-network-handler.rb</a>
</td>
</tr>
<tr>
<td>Parent:</td>
<td>
Object
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- banner header -->
<div id="bodyContent">
<div id="content">
<div class="description"><p>
This is a utility class used internally by <a
href="Driver.html">Forward::Driver</a>. It manages the network server
instance for each locally forwarded port, and is passed as the handler to
<a href="Driver.html#M000305">Driver#direct_channel</a> by
Forward::Driver#forward_local. Other clients may desire to extend this
class and pass the modified class to <a
href="Driver.html#M000305">Forward::Driver#direct_channel</a> for their own
purposes, but in general this class will rarely be used outside of <a
href="Driver.html">Forward::Driver</a>.
</p>
</div>
<div class="sectiontitle">Methods</div>
<ul>
<li><a href="#M000295">new</a></li>
<li><a href="#M000297">on_eof</a></li>
<li><a href="#M000296">on_receive</a></li>
<li><a href="#M000298">process</a></li>
</ul>
<div class="sectiontitle">Public Class methods</div>
<div class="method">
<div class="title">
<a name="M000295"></a><b>new</b>( log, block_size, client )
</div>
<div class="description">
<p>
Create a <a href="LocalNetworkHandler.html#M000295">new</a> <a
href="LocalNetworkHandler.html">LocalNetworkHandler</a> for the given
client connection.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000295_source')" id="l_M000295_source">show source</a> ]</p>
<div id="M000295_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/service/forward/local-network-handler.rb, line 32</span>
32: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>( <span class="ruby-identifier">log</span>, <span class="ruby-identifier">block_size</span>, <span class="ruby-identifier">client</span> )
33: <span class="ruby-ivar">@log</span> = <span class="ruby-identifier">log</span>
34: <span class="ruby-ivar">@block_size</span> = <span class="ruby-identifier">block_size</span>
35: <span class="ruby-ivar">@client</span> = <span class="ruby-identifier">client</span>
36: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="sectiontitle">Public Instance methods</div>
<div class="method">
<div class="title">
<a name="M000297"></a><b>on_eof</b>( channel )
</div>
<div class="description">
<p>
Invoked when the remote end of the channel will no longer be sending data.
It may still receive data, however.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000297_source')" id="l_M000297_source">show source</a> ]</p>
<div id="M000297_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/service/forward/local-network-handler.rb, line 46</span>
46: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">on_eof</span>( <span class="ruby-identifier">channel</span> )
47: <span class="ruby-identifier">channel</span>[<span class="ruby-identifier">:eof</span>] = <span class="ruby-keyword kw">true</span>
48: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000296"></a><b>on_receive</b>( channel, data )
</div>
<div class="description">
<p>
Invoked when data is recieved from the channel. This method just sends the
data to the client connection.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000296_source')" id="l_M000296_source">show source</a> ]</p>
<div id="M000296_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/service/forward/local-network-handler.rb, line 40</span>
40: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">on_receive</span>( <span class="ruby-identifier">channel</span>, <span class="ruby-identifier">data</span> )
41: <span class="ruby-ivar">@client</span>.<span class="ruby-identifier">send</span> <span class="ruby-identifier">data</span>, <span class="ruby-value">0</span>
42: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000298"></a><b>process</b>( channel )
</div>
<div class="description">
<p>
Called to <a href="LocalNetworkHandler.html#M000298">process</a> the
channel in a loop. It will repeatedly read from the client and send the
results across the channel.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000298_source')" id="l_M000298_source">show source</a> ]</p>
<div id="M000298_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/service/forward/local-network-handler.rb, line 52</span>
52: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">process</span>( <span class="ruby-identifier">channel</span> )
53: <span class="ruby-identifier">loop</span> <span class="ruby-keyword kw">do</span>
54: <span class="ruby-keyword kw">break</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">channel</span>[<span class="ruby-identifier">:eof</span>]
55: <span class="ruby-identifier">data</span> = <span class="ruby-ivar">@client</span>.<span class="ruby-identifier">recv</span>(<span class="ruby-ivar">@block_size</span>) <span class="ruby-keyword kw">or</span> <span class="ruby-keyword kw">break</span>
56: <span class="ruby-identifier">channel</span>.<span class="ruby-identifier">send_data</span> <span class="ruby-identifier">data</span> <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">data</span>.<span class="ruby-identifier">empty?</span>
57: <span class="ruby-keyword kw">end</span>
58:
59: <span class="ruby-identifier">channel</span>.<span class="ruby-identifier">close</span>
60: <span class="ruby-keyword kw">rescue</span> <span class="ruby-constant">StandardError</span>, <span class="ruby-constant">Exception</span> =<span class="ruby-operator">></span> <span class="ruby-identifier">e</span>
61: <span class="ruby-ivar">@log</span>.<span class="ruby-identifier">error</span> <span class="ruby-value str">"error processing connection: "</span> <span class="ruby-operator">+</span>
62: <span class="ruby-node">"#{e.class} (#{e.message})\n "</span> <span class="ruby-operator">+</span>
63: <span class="ruby-identifier">e</span>.<span class="ruby-identifier">backtrace</span>.<span class="ruby-identifier">join</span>(<span class="ruby-value str">"\n "</span>)
64: <span class="ruby-keyword kw">end</span>
</pre>
</div>
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