간단한 HTTP 프로토콜 구현.

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;

public class SimpleHttpClient {
    public static void main(String[] args) throws Exception{
        Socket socket = new Socket("www.kocw.net", 80);
        BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        PrintStream out = new PrintStream(socket.getOutputStream());

        // 요청라인
        out.println("GET / HTTP/1.1");

        // 헤더정보
        out.println("Host: www.kocw.net");
        out.println("User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0)"
                + " AppleWebKit/537.36 (KHTML, like Gecko)"
                + " Chrome/30.0.1599.101 Safari/537.36");
        // 공백라인
        out.println();

        // 응답 내용
        String line = null;
        while((line = in.readLine()) != null) {
            System.out.println(line);
        }

        in.close();
        out.close();
        socket.close();

    }

}