001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.mina.example.netcat; 021 022import org.apache.mina.core.buffer.IoBuffer; 023import org.apache.mina.core.service.IoHandler; 024import org.apache.mina.core.service.IoHandlerAdapter; 025import org.apache.mina.core.session.IdleStatus; 026import org.apache.mina.core.session.IoSession; 027 028/** 029 * {@link IoHandler} implementation for NetCat client. This class extended 030 * {@link IoHandlerAdapter} for convenience. 031 * 032 * @author <a href="http://mina.apache.org">Apache MINA Project</a> 033 */ 034public class NetCatProtocolHandler extends IoHandlerAdapter { 035 @Override 036 public void sessionOpened(IoSession session) { 037 // Set reader idle time to 10 seconds. 038 // sessionIdle(...) method will be invoked when no data is read 039 // for 10 seconds. 040 session.getConfig().setIdleTime(IdleStatus.READER_IDLE, 10); 041 } 042 043 @Override 044 public void sessionClosed(IoSession session) { 045 // Print out total number of bytes read from the remote peer. 046 System.err.println("Total " + session.getReadBytes() + " byte(s)"); 047 } 048 049 @Override 050 public void sessionIdle(IoSession session, IdleStatus status) { 051 // Close the connection if reader is idle. 052 if (status == IdleStatus.READER_IDLE) { 053 session.close(true); 054 } 055 } 056 057 @Override 058 public void messageReceived(IoSession session, Object message) { 059 IoBuffer buf = (IoBuffer) message; 060 // Print out read buffer content. 061 while (buf.hasRemaining()) { 062 System.out.print((char) buf.get()); 063 } 064 System.out.flush(); 065 } 066}