(동영상, 자바네트워크)자바 소켓(Socket, ServerSocket)이란, EchoClient, EchoServer 실습, 클라이언트/서버 소켓프로그래밍 실습

 

(동영상, 자바네트워크)자바 소켓(Socket, ServerSocket)이란, EchoClient, EchoServer 실습, 클라이언트/서버 소켓프로그래밍 

http://ojc.asia/bbs/board.php?bo_table=LecJavaNet&wr_id=111 

 


















 

 package socket;

 

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.ServerSocket;

import java.net.Socket;

 

class EchoServer {

public static void main(String[] args) throws IOException {

ServerSocket serverSock = new ServerSocket(Integer.parseInt(args[0]));

System.out.println(serverSock + ": 서버 소켓 생성");

 

while (true) {

Socket sock = null;

 

try {

sock = serverSock.accept();

System.out.println(sock + ": 연결됨");

InputStream inputStram = sock.getInputStream();

OutputStream outputStreasm = sock.getOutputStream();

byte[] buf = new byte[1024];

int count;

while ((count = inputStram.read(buf)) != -1) {

outputStreasm.write(buf, 0, count);

System.out.write(buf, 0, count);

}

outputStreasm.close();

System.out.println(sock + ": 연결 종료");

} catch (IOException ex)

 

{

System.out.println(sock + ": 연결 종료 (" + ex + ")");

} finally {

try {

if (sock != null)

sock.close();

} catch (IOException ex) {

}

}

}

}

}

 

 

 

package socket;

 

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.Socket;

 

class EchoClient

{   public static void main( String[] args )

        throws IOException

    {

        Socket sock = null;

        try

        {

            sock = new Socket(args[0], Integer.parseInt(args[1]));

            System.out.println(sock + ": 연결됨");

            OutputStream outputStram = sock.getOutputStream();

            InputStream inputStream = sock.getInputStream();

 

            byte[] buf = new byte[1024];

            int count;

            while( (count = System.in.read(buf)) != -1 )

            {

             outputStram.write( buf, 0, count );

                count = inputStream.read( buf );

                System.out.write( buf, 0, count );

            }

            outputStram.close();

            System.out.println(sock + ": 연결 종료");

        } catch( IOException ex )

        {

            System.out.println("연결 종료 (" + ex + ")");

        } finally 

        {

            try

            {

                if ( sock != null )

                    sock.close();

            } catch( IOException ex ) {}

        }

    }

}      

 

 

 

 

 

 

 

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