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SocketAppender (Apache Log4j 1.2.17 API)
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org.apache.log4j.net</FONT>
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Class SocketAppender</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">org.apache.log4j.AppenderSkeleton</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.log4j.net.SocketAppender</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</A>, <A HREF="../../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>SocketAppender</B><DT>extends <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></DL>
</PRE>
<P>
Sends <A HREF="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi"><CODE>LoggingEvent</CODE></A> objects to a remote a log server,
usually a <A HREF="../../../../org/apache/log4j/net/SocketNode.html" title="class in org.apache.log4j.net"><CODE>SocketNode</CODE></A>.
<p>The SocketAppender has the following properties:
<ul>
<p><li>If sent to a <A HREF="../../../../org/apache/log4j/net/SocketNode.html" title="class in org.apache.log4j.net"><CODE>SocketNode</CODE></A>, remote logging is
non-intrusive as far as the log event is concerned. In other
words, the event will be logged with the same time stamp, <A HREF="../../../../org/apache/log4j/NDC.html" title="class in org.apache.log4j"><CODE>NDC</CODE></A>, location info as if it were logged locally by
the client.
<p><li>SocketAppenders do not use a layout. They ship a
serialized <A HREF="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi"><CODE>LoggingEvent</CODE></A> object to the server side.
<p><li>Remote logging uses the TCP protocol. Consequently, if
the server is reachable, then log events will eventually arrive
at the server.
<p><li>If the remote server is down, the logging requests are
simply dropped. However, if and when the server comes back up,
then event transmission is resumed transparently. This
transparent reconneciton is performed by a <em>connector</em>
thread which periodically attempts to connect to the server.
<p><li>Logging events are automatically <em>buffered</em> by the
native TCP implementation. This means that if the link to server
is slow but still faster than the rate of (log) event production
by the client, the client will not be affected by the slow
network connection. However, if the network connection is slower
then the rate of event production, then the client can only
progress at the network rate. In particular, if the network link
to the the server is down, the client will be blocked.
<p>On the other hand, if the network link is up, but the server
is down, the client will not be blocked when making log requests
but the log events will be lost due to server unavailability.
<p><li>Even if a <code>SocketAppender</code> is no longer
attached to any category, it will not be garbage collected in
the presence of a connector thread. A connector thread exists
only if the connection to the server is down. To avoid this
garbage collection problem, you should <A HREF="../../../../org/apache/log4j/net/SocketAppender.html#close()"><CODE>close()</CODE></A> the the
<code>SocketAppender</code> explicitly. See also next item.
<p>Long lived applications which create/destroy many
<code>SocketAppender</code> instances should be aware of this
garbage collection problem. Most other applications can safely
ignore it.
<p><li>If the JVM hosting the <code>SocketAppender</code> exits
before the <code>SocketAppender</code> is closed either
explicitly or subsequent to garbage collection, then there might
be untransmitted data in the pipe which might be lost. This is a
common problem on Windows based systems.
<p>To avoid lost data, it is usually sufficient to <A HREF="../../../../org/apache/log4j/net/SocketAppender.html#close()"><CODE>close()</CODE></A> the <code>SocketAppender</code> either explicitly or by
calling the <A HREF="../../../../org/apache/log4j/LogManager.html#shutdown()"><CODE>LogManager.shutdown()</CODE></A> method
before exiting the application.
</ul>
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>0.8.4</DD>
<DT><B>Author:</B></DT>
<DD>Ceki G&uuml;lc&uuml;</DD>
</DL>
<HR>
<P>
<!-- =========== FIELD SUMMARY =========== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#DEFAULT_PORT">DEFAULT_PORT</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The default port number of remote logging server (4560).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#ZONE">ZONE</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The MulticastDNS zone advertised by a SocketAppender</TD>
</TR>
</TABLE>
&nbsp;<A NAME="fields_inherited_from_class_org.apache.log4j.AppenderSkeleton"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Fields inherited from class org.apache.log4j.<A HREF="../../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#closed">closed</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#errorHandler">errorHandler</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#headFilter">headFilter</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#layout">layout</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#name">name</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#tailFilter">tailFilter</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#threshold">threshold</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<B>Constructor Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#SocketAppender()">SocketAppender</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#SocketAppender(java.net.InetAddress, int)">SocketAppender</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/net/InetAddress.html?is-external=true" title="class or interface in java.net">InetAddress</A>&nbsp;address,
int&nbsp;port)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Connects to remote server at <code>address</code> and <code>port</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#SocketAppender(java.lang.String, int)">SocketAppender</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;host,
int&nbsp;port)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Connects to remote server at <code>host</code> and <code>port</code>.</TD>
</TR>
</TABLE>
&nbsp;
<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#activateOptions()">activateOptions</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Connect to the specified <b>RemoteHost</b> and <b>Port</b>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#append(org.apache.log4j.spi.LoggingEvent)">append</A></B>(<A HREF="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A>&nbsp;event)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subclasses of <code>AppenderSkeleton</code> should implement this
method to perform actual logging.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#cleanUp()">cleanUp</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Drop the connection to the remote host and release the underlying
connector thread if it has been created</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#close()">close</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Close this appender.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#getApplication()">getApplication</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns value of the <b>Application</b> option.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#getLocationInfo()">getLocationInfo</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns value of the <b>LocationInfo</b> option.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#getPort()">getPort</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns value of the <b>Port</b> option.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#getReconnectionDelay()">getReconnectionDelay</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns value of the <b>ReconnectionDelay</b> option.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#getRemoteHost()">getRemoteHost</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns value of the <b>RemoteHost</b> option.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#isAdvertiseViaMulticastDNS()">isAdvertiseViaMulticastDNS</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#requiresLayout()">requiresLayout</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The SocketAppender does not use a layout.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#setAdvertiseViaMulticastDNS(boolean)">setAdvertiseViaMulticastDNS</A></B>(boolean&nbsp;advertiseViaMulticastDNS)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#setApplication(java.lang.String)">setApplication</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;lapp)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The <b>App</b> option takes a string value which should be the name of the
application getting logged.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#setLocationInfo(boolean)">setLocationInfo</A></B>(boolean&nbsp;locationInfo)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The <b>LocationInfo</b> option takes a boolean value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#setPort(int)">setPort</A></B>(int&nbsp;port)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The <b>Port</b> option takes a positive integer representing
the port where the server is waiting for connections.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#setReconnectionDelay(int)">setReconnectionDelay</A></B>(int&nbsp;delay)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The <b>ReconnectionDelay</b> option takes a positive integer
representing the number of milliseconds to wait between each
failed connection attempt to the server.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/net/SocketAppender.html#setRemoteHost(java.lang.String)">setRemoteHost</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;host)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The <b>RemoteHost</b> option takes a string value which should be
the host name of the server where a <A HREF="../../../../org/apache/log4j/net/SocketNode.html" title="class in org.apache.log4j.net"><CODE>SocketNode</CODE></A> is
running.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_org.apache.log4j.AppenderSkeleton"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class org.apache.log4j.<A HREF="../../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#addFilter(org.apache.log4j.spi.Filter)">addFilter</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#clearFilters()">clearFilters</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#doAppend(org.apache.log4j.spi.LoggingEvent)">doAppend</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#finalize()">finalize</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#getErrorHandler()">getErrorHandler</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#getFilter()">getFilter</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#getFirstFilter()">getFirstFilter</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#getLayout()">getLayout</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#getName()">getName</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#getThreshold()">getThreshold</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#isAsSevereAsThreshold(org.apache.log4j.Priority)">isAsSevereAsThreshold</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#setErrorHandler(org.apache.log4j.spi.ErrorHandler)">setErrorHandler</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#setLayout(org.apache.log4j.Layout)">setLayout</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#setName(java.lang.String)">setName</A>, <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#setThreshold(org.apache.log4j.Priority)">setThreshold</A></CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
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<A NAME="DEFAULT_PORT"><!-- --></A><H3>
DEFAULT_PORT</H3>
<PRE>
public static final int <B>DEFAULT_PORT</B></PRE>
<DL>
<DD>The default port number of remote logging server (4560).
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>1.2.15</DD>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.log4j.net.SocketAppender.DEFAULT_PORT">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="ZONE"><!-- --></A><H3>
ZONE</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>ZONE</B></PRE>
<DL>
<DD>The MulticastDNS zone advertised by a SocketAppender
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.log4j.net.SocketAppender.ZONE">Constant Field Values</A></DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="SocketAppender()"><!-- --></A><H3>
SocketAppender</H3>
<PRE>
public <B>SocketAppender</B>()</PRE>
<DL>
</DL>
<HR>
<A NAME="SocketAppender(java.net.InetAddress, int)"><!-- --></A><H3>
SocketAppender</H3>
<PRE>
public <B>SocketAppender</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/net/InetAddress.html?is-external=true" title="class or interface in java.net">InetAddress</A>&nbsp;address,
int&nbsp;port)</PRE>
<DL>
<DD>Connects to remote server at <code>address</code> and <code>port</code>.
<P>
</DL>
<HR>
<A NAME="SocketAppender(java.lang.String, int)"><!-- --></A><H3>
SocketAppender</H3>
<PRE>
public <B>SocketAppender</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;host,
int&nbsp;port)</PRE>
<DL>
<DD>Connects to remote server at <code>host</code> and <code>port</code>.
<P>
</DL>
<!-- ============ METHOD DETAIL ========== -->
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<A NAME="activateOptions()"><!-- --></A><H3>
activateOptions</H3>
<PRE>
public void <B>activateOptions</B>()</PRE>
<DL>
<DD>Connect to the specified <b>RemoteHost</b> and <b>Port</b>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/OptionHandler.html#activateOptions()">activateOptions</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#activateOptions()">activateOptions</A></CODE> in class <CODE><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()</PRE>
<DL>
<DD>Close this appender.
<p>This will mark the appender as closed and call then <A HREF="../../../../org/apache/log4j/net/SocketAppender.html#cleanUp()"><CODE>cleanUp()</CODE></A> method.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="cleanUp()"><!-- --></A><H3>
cleanUp</H3>
<PRE>
public void <B>cleanUp</B>()</PRE>
<DL>
<DD>Drop the connection to the remote host and release the underlying
connector thread if it has been created
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="append(org.apache.log4j.spi.LoggingEvent)"><!-- --></A><H3>
append</H3>
<PRE>
public void <B>append</B>(<A HREF="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A>&nbsp;event)</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#append(org.apache.log4j.spi.LoggingEvent)">AppenderSkeleton</A></CODE></B></DD>
<DD>Subclasses of <code>AppenderSkeleton</code> should implement this
method to perform actual logging. See also <A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#doAppend(org.apache.log4j.spi.LoggingEvent)"><CODE>AppenderSkeleton.doAppend</CODE></A> method.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html#append(org.apache.log4j.spi.LoggingEvent)">append</A></CODE> in class <CODE><A HREF="../../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setAdvertiseViaMulticastDNS(boolean)"><!-- --></A><H3>
setAdvertiseViaMulticastDNS</H3>
<PRE>
public void <B>setAdvertiseViaMulticastDNS</B>(boolean&nbsp;advertiseViaMulticastDNS)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isAdvertiseViaMulticastDNS()"><!-- --></A><H3>
isAdvertiseViaMulticastDNS</H3>
<PRE>
public boolean <B>isAdvertiseViaMulticastDNS</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="requiresLayout()"><!-- --></A><H3>
requiresLayout</H3>
<PRE>
public boolean <B>requiresLayout</B>()</PRE>
<DL>
<DD>The SocketAppender does not use a layout. Hence, this method
returns <code>false</code>.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setRemoteHost(java.lang.String)"><!-- --></A><H3>
setRemoteHost</H3>
<PRE>
public void <B>setRemoteHost</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;host)</PRE>
<DL>
<DD>The <b>RemoteHost</b> option takes a string value which should be
the host name of the server where a <A HREF="../../../../org/apache/log4j/net/SocketNode.html" title="class in org.apache.log4j.net"><CODE>SocketNode</CODE></A> is
running.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getRemoteHost()"><!-- --></A><H3>
getRemoteHost</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getRemoteHost</B>()</PRE>
<DL>
<DD>Returns value of the <b>RemoteHost</b> option.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setPort(int)"><!-- --></A><H3>
setPort</H3>
<PRE>
public void <B>setPort</B>(int&nbsp;port)</PRE>
<DL>
<DD>The <b>Port</b> option takes a positive integer representing
the port where the server is waiting for connections.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getPort()"><!-- --></A><H3>
getPort</H3>
<PRE>
public int <B>getPort</B>()</PRE>
<DL>
<DD>Returns value of the <b>Port</b> option.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setLocationInfo(boolean)"><!-- --></A><H3>
setLocationInfo</H3>
<PRE>
public void <B>setLocationInfo</B>(boolean&nbsp;locationInfo)</PRE>
<DL>
<DD>The <b>LocationInfo</b> option takes a boolean value. If true,
the information sent to the remote host will include location
information. By default no location information is sent to the server.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getLocationInfo()"><!-- --></A><H3>
getLocationInfo</H3>
<PRE>
public boolean <B>getLocationInfo</B>()</PRE>
<DL>
<DD>Returns value of the <b>LocationInfo</b> option.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setApplication(java.lang.String)"><!-- --></A><H3>
setApplication</H3>
<PRE>
public void <B>setApplication</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;lapp)</PRE>
<DL>
<DD>The <b>App</b> option takes a string value which should be the name of the
application getting logged.
If property was already set (via system property), don't set here.
<P>
<DD><DL>
<DT><B>Since:</B></DT>
<DD>1.2.15</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getApplication()"><!-- --></A><H3>
getApplication</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getApplication</B>()</PRE>
<DL>
<DD>Returns value of the <b>Application</b> option.
<P>
<DD><DL>
<DT><B>Since:</B></DT>
<DD>1.2.15</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="setReconnectionDelay(int)"><!-- --></A><H3>
setReconnectionDelay</H3>
<PRE>
public void <B>setReconnectionDelay</B>(int&nbsp;delay)</PRE>
<DL>
<DD>The <b>ReconnectionDelay</b> option takes a positive integer
representing the number of milliseconds to wait between each
failed connection attempt to the server. The default value of
this option is 30000 which corresponds to 30 seconds.
<p>Setting this option to zero turns off reconnection
capability.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getReconnectionDelay()"><!-- --></A><H3>
getReconnectionDelay</H3>
<PRE>
public int <B>getReconnectionDelay</B>()</PRE>
<DL>
<DD>Returns value of the <b>ReconnectionDelay</b> option.
<P>
<DD><DL>
</DL>
</DD>
</DL>
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