#define J_SHARP//To compile with J#
package ConsoleApplication1;

/**
* Summary description for Program
*/

import java.io.*;
import java.net.*;
public class Listen2SkypeCall
{
    public static void main(String[] args)
    {
        // declaration section:
        // declare a server socket and a client socket for the server
        // declare an input stream
        ServerSocket SkypeServer = null;
        DataInputStream is;
        Socket clientSocket = null;
        //Buffer for all received data
        byte[] buffer = new byte[8192*1024];//8M should be enough for short test calls
        byte[] WavHeader ={
'R','I','F','F','?','?','?','?',
'W','A','V','E','f','m','t',32,
16,0,0,0,1,0,1,0,
(byte)128,62,0,0,0,125,0,0,
2,0,16,0,'d','a','t','a',
'?','?','?','?'
};

        // Try to open a server socket on port 4444
        // Note that we can't choose a port less than 1023 if we are not
        // privileged users (root)
        try
        {
            SkypeServer = new ServerSocket(4444);
        }
        catch (IOException e)
        {
            System.out.println(e);
        }
        //Copy .wav header template to buffer:
        int end = 44;
        for (int i = 0; i < end; i++)
            buffer[i] = WavHeader[i];
        // Create a socket object from the ServerSocket to listen and accept
        // connections.
        try
        {
            // Open input stream
            clientSocket = SkypeServer.accept();
            is = new DataInputStream(clientSocket.getInputStream());
            // As long as we receive data, write them to buffer.
            while (true)
            {
#if !J_SHARP
int length = clientSocket.getReceiveBufferSize();//J# does not understand it
#else
                int length = 8192;
#endif
                int chunksize = is.read(buffer, end, length);
                if (chunksize == -1) break;//End of transmission
                end += chunksize;
            }
        }
        catch (IOException e)
        {
            System.out.println(e);
        }

        //Now we can correct the .wav header:
        int2bytes(buffer, 4, end - 8);
        int2bytes(buffer, 40, end - 44);

        //and to write the buffer to an output file:
        try
        {
            FileOutputStream out = new FileOutputStream("C:\\myfile.wav");
            out.write(buffer, 0, end);
            out.close();
        }
        catch (Exception e)
        {
            // TODO: handle exception
        }

    }

    public static void int2bytes(byte[] buffer, int where, int N)
    {
        for (int i = 0; i < 4; i++)
        {
            buffer[where + i] = (byte)(N % 256);
            N /= 256;
        }
    }

}