esp-idf/examples/protocols/sockets/scripts/udpserver.py

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2018-10-02 10:33:16 -04:00
# 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
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# ----------- Config ----------
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IP_VERSION = 'IPv4'
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PORT = 3333
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# -------------------------------
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)
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try:
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sock = socket.socket(family_addr, socket.SOCK_DGRAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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except socket.error as msg:
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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:
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try:
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print('Waiting for data...')
data, addr = sock.recvfrom(1024)
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if not data:
break
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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()