def run_server(server_address):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(server_address)
logging.info("Serverul a pornit pe %s si portnul portul %d", server_address[0], server_address[1])
while True:
logging.info('Asteptam mesaje...')
data, address = sock.recvfrom(4096)
logging.info("Am primit %s octeti de la %s", len(data), address)
logging.info('Content primit: "%s"', data)
mesaj_binar = construieste_mesaj_raw(address[0], server_address[0], address[1], server_address[1], data)
valoare_numerica = calculeaza_checksum(mesaj_binar)
valoare = hex(valoare_numerica)
logging.info('Checksum calculat: %s', str(valoare))
sock.sendto(str(valoare), address)
def send_message(address, message):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
logging.info('Trimitem mesajul "%s" catre %s:%d', message, address[0],
address[1])
sock.sendto(message.encode('utf-8'), address)
logging.info('Asteptam un raspuns...')
data, server = sock.recvfrom(4096)
logging.info('Content primit: "%s"', data)
# Calculam checksum pentru pachetul primit
ip, port = sock.getsockname()
print ip
data_raw = construieste_mesaj_raw(server[0], ip, server[1], port, data)
checksum_value = calculeaza_checksum(data)
checksum_value = hex(checksum_value)
logging.info('Checksum-ul calculat pentru %s este %s', data,
str(checksum_value))
finally:
logging.info('closing socket')
sock.close()
def send_message(address, message):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ip_actual = socket.gethostbyname(socket.gethostname())
port = 20000
address_act = (ip_actual, port)
sock.bind(address_act)
try:
logging.info('Trimitem mesajul "%s" catre %s:%d', message, address[0],
address[1])
sock.sendto(message.encode('utf-8'), address)
logging.info('Asteptam un raspuns...')
data, server = sock.recvfrom(4096)
mesaj_binar = construieste_mesaj_raw(ip_actual, server[0], port,
server[1], data)
logging.info('Content primit: "%s"', data)
logging.info('Checksum calculat: %s',
str(hex(calculeaza_checksum(mesaj_binar))))
finally:
logging.info('closing socket')
sock.close()