import socket
import os
import sys

#gestione processo figlio
def child():
	print('\nUn nuovo processo figlio', os.getpid())


#gestione processo padre
def parent():
	global newpid
	newpid = os.fork()
	if newpid == 0:
		child()
	else:
		pids = (os.getpid(), newpid)
		print("padre: %d, figlio: %d\n" %pids)




s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print('Socket creata')

#Bind socket to local host and port
try:
	s.bind((HOST, PORT))
except socket.error as msg:
#	print('Bind failed. Error Code : ' + msg[0] + ' Message ' + msg[1])
	#sys.exit()

        print('bind della socket completata')


#Start listening on socket
s.listen(5)
print('Socket in ascolto')



#wait to accept a connection - blocking call
#accetta connessioni fino a 2 client
for i in range(2):
	conn[i], addr = s.accept()
	parent()
	print('Connesso con'  + ':' + str(addr[1]))
	if newpid == 0:
		if i == 0:
			buff=b'229 X\r\n'
			conn[0].send(buff)
		if i == 1:
			buff=b'229 O\r\n'
			conn[1].send(buff)



#inizia dialogo tra client e server
while 1:

s.close()