George2: Created page with " #Example app - TCP Echo Server #Make a TCP server in a process that handles multiple clients #Echos back the data the client sent #Imports import loggi..."

2022-01-15T11:25:30Z

Created page with "<source lang="python"> #Example app - TCP Echo Server #Make a TCP server in a process that handles multiple clients #Echos back the data the client sent #Imports import loggi..."

New page

<source lang="python">
#Example app - TCP Echo Server
#Make a TCP server in a process that handles multiple clients
#Echos back the data the client sent

#Imports
import logging
import multiprocessing
import socket
import select

logging.basicConfig(format='%(levelname)s - %(asctime)s: %(message)s',datefmt='%H:%M:%S', level=logging.DEBUG)

#Server
def chatserver(ip, port):
server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
logging.info(f'Binding to {ip}:{port}')
server.bind((ip,port))
server.setblocking(False)
server.listen(100)
logging.info(f'Listening on {ip}:{port}')

readers = [server]

while True:
readable, writable, errored = select.select(readers,[],[],0.5)

for s in readable:
try:
if s == server:
client, address = s.accept()
client.setblocking(False)
readers.append(client)
logging.info(f'Connection: {address}')
else:
data = s.recv(1024)
if data:
logging.info(f'Echo: {data}')
s.send(data)
else:
logging.info(f'Remove: {s}')
s.close()
readers.remove(s)

except Exception as ex:
logging.warning(ex.args)
finally:
pass

#Main
def main():
svr = multiprocessing.Process(target=chatserver,args=['localhost',2067],daemon=True,name='Server')

while True:
command = input('Enter a command (start, stop)')
if command == 'start':
logging.info('Starting the server')
svr.start()
if command == 'stop':
logging.info('Stopping the server')
svr.terminate()
svr.join()
svr.close()
logging.info('Server stopped')

break
logging.info('Application finished')

if __name__ == "__main__":
main()
</python>

Echo server - Revision history

George2: Created page with " #Example app - TCP Echo Server #Make a TCP server in a process that handles multiple clients #Echos back the data the client sent #Imports import loggi..."