import java.io.*; 
import java.net.*; 

public class HTTPServer {
    public static void main(String[] args) throws Exception {
	final int httpd = Integer.parseInt(args[0]); // our port 
	ServerSocket ssock = new ServerSocket(httpd); 
	System.out.println("Have opened port " + httpd + " locally."); 
	Socket sock = ssock.accept(); 
	System.out.println("Client has made socket connection."); 
	OneConnection_A client = new OneConnection_A(sock); 
	String s = client.getRequest(); 
    }
}

class OneConnection {
    Socket sock; 
    BufferedReader in = null; 
    DataOutputStream out = null; 
    OneConnection(Socket sock) throws Exception {
	this.sock = sock;
	in = 
	    new BufferedReader
		(new InputStreamReader
		    (sock.getInputStream())); 
	out = new DataOutputStream(sock.getOutputStream()); 
    }
    String getRequest() throws Exception {
	String s = null; 
	while ((s = in.readLine()) != null) {
	    System.out.println("got: " + s); 
	}
	return s; 
    }
}

class OneConnection_A extends OneConnection {
    OneConnection_A (Socket sock) throws Exception {
	super(sock); 
    }
    String getRequest() throws Exception {
	String s = null; 
	while ((s = in.readLine()) != null) {
	    System.out.println("got: " + s); 
	    if (s.indexOf("GET") > -1) {
		out.writeBytes("HTTP-1.0 200 OK\r\n"); 
		s = s.substring(4); 
		int i = s.indexOf(" "); 
		System.out.println("file: " + s.substring(0, i)); 
		return s.substring(0, i); 
	    }
	}
	return null; 
    }
}