OVMS3-idf/examples/protocols/sockets/scripts/udpserver.py
2018-10-16 09:48:57 +02:00

51 lines
1.4 KiB
Python

# This example code is in the Public Domain (or CC0 licensed, at your option.)
# Unless required by applicable law or agreed to in writing, this
# software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied.
# -*- coding: utf-8 -*-
import socket
import sys
# ----------- Config ----------
IP_VERSION = 'IPv4'
PORT = 3333;
# -------------------------------
if IP_VERSION == 'IPv4':
family_addr = socket.AF_INET
elif IP_VERSION == 'IPv6':
family_addr = socket.AF_INET6
else:
print('IP_VERSION must be IPv4 or IPv6')
sys.exit(1)
try :
sock = socket.socket(family_addr, socket.SOCK_DGRAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
except socket.error as msg :
print('Failed to create socket. Error Code : ' + str(msg[0]) + ' Message ' + msg[1])
sys.exit()
try:
sock.bind(('', PORT))
except socket.error as msg:
print('Bind failed. Error: ' + str(msg[0]) + ': ' + msg[1])
sys.exit()
while True:
try :
print('Waiting for data...')
data, addr = sock.recvfrom(1024)
if not data: break
data = data.decode()
print('Reply[' + addr[0] + ':' + str(addr[1]) + '] - ' + data)
reply = 'OK ' + data
sock.sendto(reply.encode(), addr)
except socket.error as msg:
print('Error Code : ' + str(msg[0]) + ' Message ' + msg[1])
sock.close()