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IoHandler (MINA 0.7.3 API)
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org.apache.mina.io</FONT>
<BR>
Interface IoHandler</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/mina/io/IoHandlerAdapter.html" title="class in org.apache.mina.io">IoHandlerAdapter</A>, <A HREF="../../../../org/apache/mina/io/handler/StreamIoHandler.html" title="class in org.apache.mina.io.handler">StreamIoHandler</A></DD>
</DL>
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<DT><PRE>public interface <B>IoHandler</B></DL>
</PRE>
<P>
Handles all I/O events fired by <A HREF="../../../../org/apache/mina/io/IoAcceptor.html" title="interface in org.apache.mina.io"><CODE>IoAcceptor</CODE></A> and <A HREF="../../../../org/apache/mina/io/IoConnector.html" title="interface in org.apache.mina.io"><CODE>IoConnector</CODE></A>.
There are 6 event handler methods, and they are all invoked by MINA
automatically. Most users of MINA I/O package will be OK with this single
interface to implement their protocols.
<p>
Please refer to
<a href="../../../../../xref-examples/org/apache/mina/examples/echoserver/EchoProtocolHandler.html"><code>EchoProtocolHandler</code></a>
example.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Rev: 210062 $, $Date: 2005-07-11 12:52:38 +0900 $</DD>
<DT><B>Author:</B></DT>
<DD>Trustin Lee (trustin@apache.org)</DD>
<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/mina/io/IoHandlerAdapter.html" title="class in org.apache.mina.io"><CODE>IoHandlerAdapter</CODE></A></DL>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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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/mina/io/IoHandler.html#dataRead(org.apache.mina.io.IoSession, org.apache.mina.common.ByteBuffer)">dataRead</A></B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="../../../../org/apache/mina/common/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;buf)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when data is read from the connection.</TD>
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<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/mina/io/IoHandler.html#dataWritten(org.apache.mina.io.IoSession, java.lang.Object)">dataWritten</A></B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;marker)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when MINA wrote <A HREF="../../../../org/apache/mina/io/IoSession.html#write(org.apache.mina.common.ByteBuffer, java.lang.Object)"><CODE>IoSession.write(ByteBuffer, Object)</CODE></A>
request successfully.</TD>
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<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/mina/io/IoHandler.html#exceptionCaught(org.apache.mina.io.IoSession, java.lang.Throwable)">exceptionCaught</A></B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Throwable.html" title="class or interface in java.lang">Throwable</A>&nbsp;cause)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when any exception is thrown by user <A HREF="../../../../org/apache/mina/io/IoHandler.html" title="interface in org.apache.mina.io"><CODE>IoHandler</CODE></A>
implementation or by MINA.</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/mina/io/IoHandler.html#sessionClosed(org.apache.mina.io.IoSession)">sessionClosed</A></B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when the connection is closed.</TD>
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<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/mina/io/IoHandler.html#sessionCreated(org.apache.mina.io.IoSession)">sessionCreated</A></B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when the session is created.</TD>
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<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/mina/io/IoHandler.html#sessionIdle(org.apache.mina.io.IoSession, org.apache.mina.common.IdleStatus)">sessionIdle</A></B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="../../../../org/apache/mina/common/IdleStatus.html" title="class in org.apache.mina.common">IdleStatus</A>&nbsp;status)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when the connection is idle.</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/mina/io/IoHandler.html#sessionOpened(org.apache.mina.io.IoSession)">sessionOpened</A></B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when the connection is opened.</TD>
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&nbsp;
<P>
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<A NAME="sessionCreated(org.apache.mina.io.IoSession)"><!-- --></A><H3>
sessionCreated</H3>
<PRE>
void <B>sessionCreated</B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Invoked when the session is created. Initialize default socket
parameters and user-defined attributes here.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="sessionOpened(org.apache.mina.io.IoSession)"><!-- --></A><H3>
sessionOpened</H3>
<PRE>
void <B>sessionOpened</B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Invoked when the connection is opened. This method is not invoked if the
transport type is UDP.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="sessionClosed(org.apache.mina.io.IoSession)"><!-- --></A><H3>
sessionClosed</H3>
<PRE>
void <B>sessionClosed</B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Invoked when the connection is closed. This method is not invoked if the
transport type is UDP.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="sessionIdle(org.apache.mina.io.IoSession, org.apache.mina.common.IdleStatus)"><!-- --></A><H3>
sessionIdle</H3>
<PRE>
void <B>sessionIdle</B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="../../../../org/apache/mina/common/IdleStatus.html" title="class in org.apache.mina.common">IdleStatus</A>&nbsp;status)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Invoked when the connection is idle. Refer to <A HREF="../../../../org/apache/mina/common/IdleStatus.html" title="class in org.apache.mina.common"><CODE>IdleStatus</CODE></A>. This
method is not invoked if the transport type is UDP.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="exceptionCaught(org.apache.mina.io.IoSession, java.lang.Throwable)"><!-- --></A><H3>
exceptionCaught</H3>
<PRE>
void <B>exceptionCaught</B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Throwable.html" title="class or interface in java.lang">Throwable</A>&nbsp;cause)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Invoked when any exception is thrown by user <A HREF="../../../../org/apache/mina/io/IoHandler.html" title="interface in org.apache.mina.io"><CODE>IoHandler</CODE></A>
implementation or by MINA. If <code>cause</code> is instanceof
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io"><CODE>IOException</CODE></A>, MINA will close the connection automatically.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="dataRead(org.apache.mina.io.IoSession, org.apache.mina.common.ByteBuffer)"><!-- --></A><H3>
dataRead</H3>
<PRE>
void <B>dataRead</B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="../../../../org/apache/mina/common/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;buf)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Invoked when data is read from the connection. You can access
<code>buf</code> to get read data. <code>buf</code> returns to
the internal buffer pool of MINA after this method is invoked, so
please don't try to reuse it.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="dataWritten(org.apache.mina.io.IoSession, java.lang.Object)"><!-- --></A><H3>
dataWritten</H3>
<PRE>
void <B>dataWritten</B>(<A HREF="../../../../org/apache/mina/io/IoSession.html" title="interface in org.apache.mina.io">IoSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;marker)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Invoked when MINA wrote <A HREF="../../../../org/apache/mina/io/IoSession.html#write(org.apache.mina.common.ByteBuffer, java.lang.Object)"><CODE>IoSession.write(ByteBuffer, Object)</CODE></A>
request successfully. <code>marker</code> is what you specified at the
point of invocation of <A HREF="../../../../org/apache/mina/io/IoSession.html#write(org.apache.mina.common.ByteBuffer, java.lang.Object)"><CODE>IoSession.write(ByteBuffer, Object)</CODE></A>.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
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