A very simple UNIX socket test application

listenbuddy.py

import os
import sys
import socket

def main():
    # check if directory exists, if it doesn't, make it:
    if not os.path.exists('/var/run'):
        os.mkdir('/var/run', 0777)

    # make the socket
    sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
    sock.bind('/var/run/mysock.sock')

    # listen on the socket and accept connections
    sock.listen(1)
    while True:
        print >>sys.stdout, 'listening for connections on /var/run/mysock.sock'
        conn, client = sock.accept()
        try:
            buf = conn.recv(256)
            print >>sys.stdout, 'received data "%s" from "%s"' % (buf, client)
            conn.close()
        except:
            print >>sys.stdout, "Failed to accept connection!  Retrying..."

if __name__ == '__main__':
    sys.exit(main())