如何设置sokcet超时

[loskill]

代码运行到new Socket("...",...);停了很久，然后就报超时错误了。主机的IP是可以ping通的。
java.net.ConnectException: Connection timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
at java.net.Socket.connect(Socket.java:464)
at java.net.Socket.connect(Socket.java:414)
at java.net.Socket.<init>(Socket.java:310)
at java.net.Socket.<init>(Socket.java:125)
at cmpp.Testapp.Run(Testapp.java:38)
at cmpp.Testapp.main(Testapp.java:69)

[wuxo84]

        /**
	 * connect to server
	 * @param the hostname, the server's listening port 
	 * */
	private boolean connectTo(String hostName, int port) throws IOException
	{
		boolean result = false;
		//displayMessage( "Attempting connection" );
		
		//create socket to make connection to server
		applet = new Socket();
		try
		{
			//InetSocketAddress is the subclass of abstruct class SocketAddress
			InetSocketAddress inetSocketAddress = new InetSocketAddress( 
		    		InetAddress.getByName( hostName ), port );
		        //if > 60 seconds, then close
		        applet.connect( inetSocketAddress, 60000 );
		    
		        //display connection information
			//displayMessage( "Connect to: " + applet.getInetAddress().getHostName() );
			
			result = true;
		}
		catch(SocketTimeoutException e) 
		{
		     System.out.println( "Cannot connect ..." );
		}
		catch(Exception e) 
		{
			System.out.println( e );
		}
		
		return result;
	}

[wuxo84]

用inetSocketAddress，像我以上写的那样

[枫叶rain]

socket.setSoTimeout(int timeout);
一个自然的处理思路是采用超时机制。在java.net.socket中很容易找到超时控制选项SO_TIMEOUT，通过SetSoTimeout()方法便可以指定一个由系统设计者规定的时间间隔，程序员只需要简单地设置一个例外捕获处理代码即可