#!/usr/bin/env python
#
# Copyright 2005 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING.  If not, write to
# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#

from gnuradio import gr
import socket

#
# Socket sink is client
#

def make_socket_sink(addr, port, data_size):
    
    # Create socket
    fd = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    
    # make socket
    fd.connect((addr,port))
    print "Connection To: ", addr, " ", port

    # connect to a file descriptor
    filesink = gr.file_descriptor_sink(data_size, fd.fileno())

    return (filesink, fd)

#
# Socket source is server
#

def make_socket_source(port, data_size):
    
    # Create socket
    fd = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        
    # Ensure you can restart server quickly when it terminates
    fd.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

    print "Waiting for connection on port: ", port
        
    # set the client sock's TCP num
    fd.bind(('0.0.0.0',port))
    fd.listen(1)
    conn, connaddr = fd.accept()
    print "Connection from Address: ", connaddr

    # setup file src
    filesrc = gr.file_descriptor_source(data_size, conn.fileno())
        
    # return 
    return (filesrc, fd, conn)