106 lines
2.8 KiB
Python
106 lines
2.8 KiB
Python
#!/usr/bin/env python
|
|
|
|
# COAP ping implementation
|
|
# 0x4000 0001 <--> 0x7000 0001
|
|
# 0x4000 0002 <--> 0x7000 0002
|
|
# 0x4000 0003 <--> 0x7000 0003
|
|
|
|
import socket
|
|
import struct
|
|
import sys
|
|
from time import sleep, time
|
|
from optparse import OptionParser
|
|
|
|
|
|
# Parse Options
|
|
if __name__ == '__main__':
|
|
parser = OptionParser()
|
|
|
|
parser.add_option("-n", "--hostname",
|
|
action="append",
|
|
dest="host_name",
|
|
help="Define COAP host name")
|
|
|
|
parser.add_option("-p", "--port",
|
|
action="append",
|
|
dest="host_port",
|
|
default=5683,
|
|
help="Define COAP host port (default: 5683)")
|
|
|
|
parser.add_option("-l", "--loops",
|
|
type="int",
|
|
dest="ping_loops",
|
|
default=0,
|
|
help="Number of ping loops (default: 0 - forever)")
|
|
|
|
parser.add_option("-t", "--sleep",
|
|
type="float",
|
|
dest="sleep_sec",
|
|
default=1,
|
|
help="Time in seconds between two pings (default: 1 sec)")
|
|
|
|
(options, args) = parser.parse_args()
|
|
|
|
# COAP ping parameters setup
|
|
host = options.host_name[0]
|
|
port = options.host_port
|
|
sleep_sec = options.sleep_sec
|
|
ping_loops = options.ping_loops
|
|
|
|
ping_no = 1 # ping payload counter
|
|
ping_cnt = 0 # global ping cnt
|
|
|
|
print('COAP ping script')
|
|
print('COAP ping to: %s:%s...' % (host, port))
|
|
|
|
try:
|
|
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
|
except socket.error:
|
|
print('Error: Failed to create socket')
|
|
sys.exit()
|
|
|
|
while(1):
|
|
loop_time = time()
|
|
msg = '' #[0x40, 0x00, 0x00, 0x00]
|
|
|
|
msg += struct.pack("B", 0x40)
|
|
msg += struct.pack("B", 0x00)
|
|
msg += struct.pack("B", 0x00)
|
|
msg += struct.pack("B", ping_no)
|
|
|
|
try :
|
|
print('[0x%08X] Send ping:' % (ping_cnt), [hex(ord(c)) for c in msg])
|
|
# Set the whole string
|
|
s.sendto(msg, (host, port))
|
|
s.settimeout(2 + sleep_sec)
|
|
|
|
# receive data from client (data, addr)
|
|
d = s.recvfrom(4)
|
|
reply = d[0]
|
|
addr = d[1]
|
|
|
|
# We need to check if ping peyload counter is the same in reply
|
|
status = bytes(msg)[3] == bytes(reply)[3]
|
|
print('[0x%08X] Recv ping:' % (ping_cnt), [hex(ord(c)) for c in reply], 'ok' if status else 'fail')
|
|
|
|
except socket.error as e:
|
|
print('Error: socket.error: ', str(e))
|
|
sleep(3) # Waiting to recover ;)
|
|
except socket.timeout:
|
|
print("Error: closing socket")
|
|
s.close()
|
|
|
|
if ping_no >= 0xFF:
|
|
ping_no = 1
|
|
else:
|
|
ping_no += 1
|
|
|
|
sleep(sleep_sec - (time() - loop_time))
|
|
print(('In %.2f sec' % (time() - loop_time)))
|
|
|
|
if ping_loops > 0:
|
|
if ping_loops == 1:
|
|
break
|
|
ping_loops -= 1
|
|
|
|
ping_cnt += 1
|