############################################################
##
## TCP Server Socket - By Fischetti P. 
##
############################################################
##
## Serve + client
## ma il client deve inviare la string 'quit' o 'close' o 'q'
## per chiudere la connessione e permettere
## ad altri di continuare.
## inviare 'stop' per terminare il programma
##
############################################################

import socket
import time

def strTohex(s):
    lst = []
    for ch in s:
        hv = hex(ord(ch))
        lst.append(hv)
    return lst

TCP_IP = '192.168.1.150'#'127.0.0.1' #Per connessioni remote mettere l'IP
TCP_PORT = 6000 #Controllare che la porta sia 'opened' con nmap 
BUFFER_SIZE = 1024
 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

s.bind((TCP_IP, TCP_PORT))
s.listen(1)
buff=[]
bStop=False
while 1:
    print ('Waiting connection on ',socket.gethostname(),TCP_IP,TCP_PORT)
    conn, addr = s.accept()
    print ('Connection address:', addr)
    bContinue=True
    while bContinue:
         data = conn.recv(BUFFER_SIZE)
         if not data:
             break
         print ("received data:", data)
         conn.send(data)  # echo
         sData = data.decode("utf-8").rstrip('\n')
         #NB o uso b'...' oppure converto in Unicode
         if data==b'quit\n' or sData=='close' or sData=='q':
             bContinue = False
             print ('Connection address:', addr, ' Closed')
         if sData=='stop' or sData=='x':
             bContinue = False
             bStop=True
             print ('Connection address:', addr, ' Closed')
##
##         #TELNET char 
##         if len(data)==2 and data[0]=='\r' and data[1]=='\n':
##             if  ''.join(buff).lower()=='close':
##                 bContinue=False
##                 print ('Connection address:', addr, ' Closed')
##             buff=[]    
##         else:
##             buff.append(data)
    conn.close()
    if bStop == True:
       print("Server Stopped. Bye!")
       break