esp-idf/examples/protocols/sockets/scripts/run_udp_server.py
2022-12-16 19:03:25 +08:00

81 lines
2.7 KiB
Python

# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import argparse
import socket
from threading import Event, Thread
DEF_PORT = 3333
class UdpServer:
def __init__(self, port, family_addr, persist=False, timeout=60): # type: ignore
self.port = port
self.family_addr = family_addr
self.socket = socket.socket(family_addr, socket.SOCK_DGRAM)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.settimeout(timeout)
self.shutdown = Event()
self.persist = persist
self.server_thread = None
def __enter__(self): # type: ignore
try:
self.socket.bind(('', self.port))
except socket.error as e:
print('Bind failed:{}'.format(e))
raise
print('Starting server on port={} family_addr={}'.format(self.port, self.family_addr))
self.server_thread = Thread(target=self.run_server)
self.server_thread.start()
return self
def __exit__(self, exc_type, exc_value, traceback): # type: ignore
if self.persist:
sock = socket.socket(self.family_addr, socket.SOCK_DGRAM)
sock.sendto(b'Stop', ('localhost', self.port))
sock.close()
self.shutdown.set()
self.server_thread.join()
self.socket.close()
def run_server(self) -> None:
while not self.shutdown.is_set():
try:
data, addr = self.socket.recvfrom(1024)
print(addr)
if not data:
return
data = data.decode()
print('Reply[' + addr[0] + ':' + str(addr[1]) + '] - ' + data)
reply = 'OK: ' + data
self.socket.sendto(reply.encode(), addr)
except socket.timeout:
print(f'socket recvfrom timeout ({self.socket.timeout}s)')
except socket.error as e:
print('Running server failed:{}'.format(e))
raise
if not self.persist:
break
def main() -> None:
parser = argparse.ArgumentParser()
parser.add_argument('--port', default=DEF_PORT, type=int, help='UDP server port')
parser.add_argument('--ipv6', action='store_true', help='Create IPv6 server.')
parser.add_argument('--timeout', default=10, type=int, help='socket recvfrom timeout.')
args = parser.parse_args()
if args.ipv6:
family = socket.AF_INET6
else:
family = socket.AF_INET
with UdpServer(args.port, family, persist=True, timeout=args.timeout):
input('Server Running. Press Enter or CTRL-C to exit...\n')
if __name__ == '__main__':
main()