# listen for incomming packets
rcv_data, rcv_addr = s.recvfrom(128)
if len(rcv_data) > 0:
rcv_ip = rcv_addr[0]
rcv_port = rcv_addr[1]
print('Incomming %d bytes from %s (port %d)' %
(len(rcv_data), rcv_ip, rcv_port))
print(rcv_data)
# could send some ACK pack:
if rcv_data.startswith("Hello"):
try:
s.sendto('ACK ' + MAC + ' ' + str(rcv_data)[2:-1],
(rcv_ip, rcv_port))
except Exception:
pass
mesh.blink(7, .3)
continue
# update neighbors list
neigbors = mesh.neighbors_ip()
print("%d Neighbors %s" % (len(neigbors), neigbors))
# send PING and UDP packets to all neighbors
for neighbor in neigbors:
if mesh.ping(neighbor) > 0:
print('Ping OK from neighbor %s' % neighbor)
mesh.blink(10, .1)
else:
print('Ping not received from neighbor %s' % neighbor)
time.sleep(10)
# check if topology changes, maybe RLOC IPv6 changed
new_ip = mesh.ip()
if ip != new_ip:
print("IP changed from: %s to %s"%(ip, new_ip))
ip = new_ip
# update neighbors list
neigbors = mesh.neighbors_ip()
print("%d neighbors, IPv6 list: %s"%(len(neigbors), neigbors))
# send PING and UDP packets to all neighbors
for neighbor in neigbors:
if mesh.ping(neighbor) > 0:
print('Ping OK from neighbor %s'%neighbor)
mesh.blink(10, .1)
else:
print('Ping not received from neighbor %s'%neighbor)
time.sleep(10)
pack_num = pack_num + 1
try:
s.sendto(msg + str(pack_num), (neighbor, myport))
print('Sent message to %s'%(neighbor))
except Exception:
pass
time.sleep(20 + machine.rng()%20)
# random sleep time
time.sleep(30 + machine.rng()%30)
