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udp_send.py
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udp_send.py
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#!/usr/bin/python3
#-*- encoding: utf-8 -*-
#
# Requirement library
# python3 -m pip install -U netifaces
from socket import *
import netifaces
import argparse
if __name__=='__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--port', type=int, help='udp port', default=9876)
args = parser.parse_args()
print("args.port={}".format(args.port))
# Get my IP address
for iface_name in netifaces.interfaces():
iface_data = netifaces.ifaddresses(iface_name)
ipList=iface_data.get(netifaces.AF_INET)
#print("ip={}".format(ipList))
ipDict = ipList[0]
addr = ipDict["addr"]
#print("addr={}".format(addr))
if (addr != "127.0.0.1"):
myIp = addr
print("myIp={}".format(myIp))
myIpList = myIp.split('.')
print("myIpList={}".format(myIpList))
# Set Directed broadcast address
#broadcast = "192.168.10.255" # for Broadcast
broadcast = "{}.{}.{}.255".format(myIpList[0], myIpList[1], myIpList[2])
print("broadcast={}".format(broadcast))
s = socket(AF_INET, SOCK_DGRAM)
s.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
s.bind(('', args.port))
s.sendto(b'take picture', (broadcast, args.port))
s.close()