tcplistener.java

来自「基于网络的AIBO机器狗遥操作控制程序代码」· Java 代码 · 共 77 行

import java.net.ServerSocket;
import java.net.Socket;

public abstract class TCPListener extends Listener {
	protected abstract void connected(Socket socket);
	protected abstract void  getsocket();
	protected void runServer() {
		
		Thread me = Thread.currentThread();
		try { _serverSocket=new ServerSocket(_port); }
		catch (Exception ex) {
			System.out.println("port "+_port+": "+ex);
			return;
		}

		while (me == _listenerThread && !destroy) {
			try {
				_socket=_serverSocket.accept();
				connected(_socket);
			} catch (Exception ex) { }
		}
	}

	protected void runConnect() {
		int attempts=0;
		Thread me = Thread.currentThread();
		while (me==_listenerThread && !destroy) {
			if(attempts==0) {
				System.out.println("["+_port+"] connecting ...");
			}
			
			try {
				_socket=new Socket(_host,_port);
				System.out.println("["+_port+"] connected");
				attempts=0;
				_isConnected=true;

				
			} catch (Exception ex) {}
			
			//getsocket();
			attempts=0;
			if(_isConnected) {
				connected(_socket);
				if(!destroy)
					System.out.println("["+_port+"] disconnected, attempting to reestablish ..");
			}
			attempts++;
			if(destroy) {
				System.out.println("["+_port+"] connection closed");
				break;
			}
			try {
				Thread.sleep(500);
			} catch (Exception ex) {}
		}
	}

	public void close() {
		_listenerThread=null;
		_isConnected=false;
		try { _socket.close(); } catch (Exception ex) { }
		if (_isServer)
			try { _serverSocket.close(); } catch (Exception ex) { }
	}

	public TCPListener() { super(); }
	public TCPListener(int port) { super(port); }
	public TCPListener(String host, int port) { super(host,port); }

	Socket _socket;
	ServerSocket _serverSocket;
}