socket连接问题
请问大侠们,我在网上找了一个whois的简单程序,但是运行起来总是报错是
java.net.ConnectException: Connection timed out: connect
源程序如下:
import java.net.*;
import java.io.*;
public class whois
{
public final static int port = 43;
public final static String hostname = "10.0.0.51 ";
public static void main(String[] args)
{
Socket theSocket;
DataInputStream theWhoisStream;
PrintStream ps;
//检查命令行参数
if (args.length <1)
{
System.out.println( "\nUsage: java whois <command> ");
System.out.println( "Parameters: ");
System.out.println(
"\tcommand = one or more Domain name, or other command. ");
System.out.println( "Example: ");
System.out.println( "\tjava whois sohu.com ");
System.out.println( "\tjava whois help ");
System.exit(1); //退出
}
while(true)
{
try {
//在TCP服务端口43(十进制)连接SRI-NIC服务主机
theSocket = new Socket( "10.0.0.51 ", port);
System.out.println( "Socket connected! ");
ps = new PrintStream(theSocket.getOutputStream());
//发送用户提供的一个或多个命令
for (int i = 0; i < args.length; i++)
ps.print(args[i] + " ");
//以回车和换行( <CRLF> )结尾
ps.print( "\r\n ");
//接受相应命令的返回信息
theWhoisStream = new DataInputStream(theSocket.getInputStream());
String s;
while ((s = theWhoisStream.readLine()) != null) {
System.out.println(s);
}
//关闭DataInputStream和PrintWriter
theWhoisStream.close();
ps.close();
//关闭socket
theSocket.close();
break;
}
catch (
IOException e) {
System.err.println(e);
continue;
}
}
}
}
根本没有显示System.out.println( "Socket connected! ");的结果,请大家帮帮忙,是怎么回事啊?不是一个很简单的程序吗??
------解决方案--------------------10.0.0.51没有这个IP吧?.......不能连接啊....
------解决方案--------------------java.net.ConnectException: Connection timed out: connect 连接超时
1.确认服务器端正常运行了,并且43端口已经被打开
2.确认IP地址,10开头地址一般都是不用的?你怎么会用到这个地址的??
本机访问127.0.0.1或者LOCALHOST就行