import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.net.*;
class OneConnection_D extends OneConnection_C  {

    OneConnection_D(Socket sock) throws Exception {
        super(sock);
    }   

    void sendThruChannel(String fname) throws Exception {
        File f = new File(fname);
        FileInputStream fin = new FileInputStream(f);
        int len = (int) f.length();

        FileChannel fc = fin.getChannel();
        System.out.println("allocating buff");
        ByteBuffer myBB = ByteBuffer.allocate(len);
        int bytesRead = fc.read(myBB);
        myBB.flip();

        System.out.println("getting sock channel");
        SocketChannel sc = sock.getChannel();
        int bytesWritten = sc.write(myBB);
        System.out.println("wrote "+bytesWritten+" bytes into sock channel");
        sc.close();
        System.out.println("closed sock channel");
    }
}

public class HTTPServer5 {
    public static void main(String a[]) throws Exception {

        final int httpd = 80;
        ServerSocketChannel ssc = ServerSocketChannel.open();
        InetSocketAddress isa
              = new InetSocketAddress("127.0.0.1", httpd);
        ssc.socket().bind(isa);
        System.out.println("have opened port 80 locally, " + ssc.socket() );

        System.out.println("waiting for accept");
        SocketChannel sockch = ssc.accept();
        System.out.println("client has made socket connection");
        System.out.flush();
        Socket sock = sockch.socket();
        System.out.println("obtained socket from socket channel ");

        OneConnection_D client = new OneConnection_D(sock);
        String filename = client.getRequest();
        client.sendThruChannel("/tmp/"+filename);
    }
}