org.apache.mina.common
Interface IoHandler
- ChainedIoHandler, DemuxingIoHandler, IoHandlerAdapter, SingleSessionIoHandlerDelegate, StreamIoHandler
public interface IoHandler
Handles all I/O events fired by MINA.
exceptionCaught
public void exceptionCaught(IoSession session,
Throwable cause)
throws Exception
Invoked when any exception is thrown by user
IoHandler
implementation or by MINA. If
cause
is instanceof
IOException
, MINA will close the connection automatically.
messageReceived
public void messageReceived(IoSession session,
Object message)
throws Exception
Invoked when a message is received.
messageSent
public void messageSent(IoSession session,
Object message)
throws Exception
sessionClosed
public void sessionClosed(IoSession session)
throws Exception
Invoked when a connection is closed.
sessionCreated
public void sessionCreated(IoSession session)
throws Exception
Invoked from an I/O processor thread when a new connection has been created.
Because this method is supposed to be called from the same thread that
handles I/O of multiple sessions, please implement this method to perform
tasks that consumes minimal amount of time such as socket parameter
and user-defined session attribute initialization.
sessionIdle
public void sessionIdle(IoSession session,
IdleStatus status)
throws Exception
Invoked with the related
IdleStatus
when a connection becomes idle.
This method is not invoked if the transport type is UDP; it's a known bug,
and will be fixed in 2.0.
sessionOpened
public void sessionOpened(IoSession session)
throws Exception
Invoked when a connection has been opened. This method is invoked after
sessionCreated(IoSession)
. The biggest difference from
sessionCreated(IoSession)
is that it's invoked from other thread
than an I/O processor thread once thread modesl is configured properly.