使用ab进行测试时，套接字服务器挂起，等待BufferedReader.readline（）

ab -n 20000 -c 40 -d  http://localhost:1080/

ab -n 20000 -c 1000 -d  http://localhost:1080/

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class TestServer {
    public static void main(String[] args){
        ServerSocket socket = null;

        try{
            socket = new ServerSocket(1080);
            ExecutorService pool = Executors.newFixedThreadPool(10);
            while(true){
                Socket s = socket.accept();
                pool.execute(new RequestHandler(s) );
            }
        }
        catch(Exception e){
            e.printStackTrace();
        }
        finally{
            if(null!=socket){
                try {
                    socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }
}

class RequestHandler implements Runnable{
    final Socket s;
    public RequestHandler(Socket s) {
        this.s = s;
    }

    public void run() {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
            String line = br.readLine();

            PrintWriter pw = new PrintWriter(s.getOutputStream());
            pw.print("HTTP/1.0 200 OKrnContent-Type: text/htmlrnrn");
            pw.print(line);
            pw.flush();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        finally{
            if(s!=null){
                try {
                    s.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
}

BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
String line = br.readLine();

String line = "don't read the socket";