我有一个客户机和一个服务器，这是一个典型的例子，试图用非常简单的方式模拟http协议。首先客户端发送数据，服务器端打印数据，然后相反。在下面的代码中，服务器或客户机阻塞，原因未知。客户机向服务器发送数据，服务器接收并打印数据。但它只是在打印完数据后阻塞。如果我关闭客户机的outputstream（out.close（）），那么客户机应该获取服务器的数据，但会抛出ioexception，并显示消息：socket closed。
我的问题是为什么它会阻塞？我必须用eos触发输出吗？
客户

import java.nio.*;
import java.nio.channels.*;
import java.net.*;
import java.util.*;
import java.io.IOException;
import java.io.*;

public class block_client_webclient
{
    public static void main(String [] args)
    {
        try{

            Socket s = new Socket("localhost", 8080);

            OutputStreamWriter out = new OutputStreamWriter(s.getOutputStream());
            InputStreamReader in = new InputStreamReader(s.getInputStream());

            //WRITE
            out.write("GET / HTTP/1.1\r\nUser-agent: Agent 2.0 Browser\r\nAccept: */*\r\nAccept-Language: en-US,en;q=0.5\r\nConnection: keep-alive\r\n\r\n");
            out.flush();
            out.close();

            if (s.isConnected()==true && s.isClosed()==false) System.out.println("OPEN");
            else System.out.println("CLOSED");

            char[] bin = new char[400];
            int r=0;

            //READ
            while((r=in.read(bin))!=-1) { System.out.println("Input data: "+r+" bytes"); System.out.print(bin); bin= new char[400]; };
            System.out.println(r);

            s.close();

        }
        catch (IOException ex) {System.out.println(ex.getMessage());}
    }
}

服务器

import java.nio.*;
import java.nio.channels.*;
import java.net.*;
import java.util.*;
import java.io.IOException;
import java.io.*;

public class block_server_webserver
{
    public static void main(String [] args)
    {
        while(true)
        {
        try{
            ServerSocket server = new ServerSocket(8080);
            Socket connection = server.accept();
            try{
            OutputStreamWriter out = new OutputStreamWriter( connection.getOutputStream());
            InputStreamReader in = new InputStreamReader( connection.getInputStream());

            char[] bin = new char[400];
            int r=0;
            int readsofar=0;

            //READ
            while((r=in.read(bin))!=-1) { System.out.print(bin); bin= new char[400]; };
            System.out.println("END");

            //WRITE
            out.write("Server: BlockServer 1.0\r\nHost: 192.168.1.1\r\n\r\n");
            out.flush();
            System.out.println("Just written data to "+connection.getRemoteSocketAddress());
            connection.close();

            } catch (IOException ex) { connection.close();}
        }catch (IOException ex) {}
     }
    }
}