1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 * 19 */ 20 package org.apache.mina.example.netcat; 21 22 import org.apache.mina.core.buffer.IoBuffer; 23 import org.apache.mina.core.service.IoHandler; 24 import org.apache.mina.core.service.IoHandlerAdapter; 25 import org.apache.mina.core.session.IdleStatus; 26 import org.apache.mina.core.session.IoSession; 27 28 /** 29 * {@link IoHandler} implementation for NetCat client. This class extended 30 * {@link IoHandlerAdapter} for convenience. 31 * 32 * @author The Apache MINA Project (dev@mina.apache.org) 33 */ 34 public class NetCatProtocolHandler extends IoHandlerAdapter { 35 @Override 36 public void sessionOpened(IoSession session) { 37 // Set reader idle time to 10 seconds. 38 // sessionIdle(...) method will be invoked when no data is read 39 // for 10 seconds. 40 session.getConfig().setIdleTime(IdleStatus.READER_IDLE, 10); 41 } 42 43 @Override 44 public void sessionClosed(IoSession session) { 45 // Print out total number of bytes read from the remote peer. 46 System.err.println("Total " + session.getReadBytes() + " byte(s)"); 47 } 48 49 @Override 50 public void sessionIdle(IoSession session, IdleStatus status) { 51 // Close the connection if reader is idle. 52 if (status == IdleStatus.READER_IDLE) { 53 session.close(true); 54 } 55 } 56 57 @Override 58 public void messageReceived(IoSession session, Object message) { 59 IoBuffer buf = (IoBuffer) message; 60 // Print out read buffer content. 61 while (buf.hasRemaining()) { 62 System.out.print((char) buf.get()); 63 } 64 System.out.flush(); 65 } 66 }