SocketTimeoutException: Read timed out请各位帮帮忙！！！

import java.io.BufferedInputStream;

import java.io.DataInputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.net.Socket;



//客户端

public class SocketClient {



	public static void main(String[] args){

		try {

			Socket socket=new Socket("127.0.0.1",21112);

			socket.setSoTimeout(10*1000);

			DataInputStream in=new DataInputStream(new BufferedInputStream(socket.getInputStream()));

			OutputStream out =socket.getOutputStream();

			out.write("client".getBytes());

			out.flush();

			int r=0;

                        //数据不能读完，但是已经没有数据了

			while((r=in.read())!=-1){

				System.out.print((char)r);

			}

			System.out.println("end");

		}  catch (Exception e) {

			e.printStackTrace();

		}

	}



}

import java.io.BufferedOutputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.ServerSocket;

import java.net.Socket;

//服务端

public class SocketServer {



	public static void main(String[] args) {

		try {

			ServerSocket server=new ServerSocket(21112);

			Socket socket=null;

			socket=server.accept();

			System.out.println("有客户端连接了");

			DataOutputStream out=new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));

			InputStream in=socket.getInputStream();

			out.write("server".getBytes());

			out.flush();

			int r=0;

			while((r=in.read())!=-1){

				System.out.print((char)r);

			}

		} catch (IOException e) {

			e.printStackTrace();

		}

	}



}