56 lines
1.5 KiB
Python
56 lines
1.5 KiB
Python
|
import socket
|
||
|
|
import selectors
|
||
|
|
import signal
|
||
|
|
import sys
|
||
|
|
|
||
|
|
def signal_handler(sig, frame):
|
||
|
|
print('\nDone!')
|
||
|
|
sys.exit(0)
|
||
|
|
|
||
|
|
signal.signal(signal.SIGINT, signal_handler)
|
||
|
|
print('Press Ctrl+C to exit...')
|
||
|
|
|
||
|
|
##
|
||
|
|
|
||
|
|
def handle_client_connection(server_socket):
|
||
|
|
client_socket, address = server_socket.accept()
|
||
|
|
print('Accepted connection from {}:{}'.format(address[0], address[1]))
|
||
|
|
client_socket.setblocking(False)
|
||
|
|
sel.register(client_socket, selectors.EVENT_READ, handle_data)
|
||
|
|
|
||
|
|
def handle_data(client_socket):
|
||
|
|
address=client_socket.getpeername()
|
||
|
|
try:
|
||
|
|
request = client_socket.recv(1024)
|
||
|
|
if not request:
|
||
|
|
sel.unregister(client_socket)
|
||
|
|
client_socket.close()
|
||
|
|
else:
|
||
|
|
msg=request.decode()
|
||
|
|
print('Received {}'.format(msg))
|
||
|
|
msg=("ECHO: "+msg).encode()
|
||
|
|
client_socket.send(msg)
|
||
|
|
except (socket.timeout,socket.error):
|
||
|
|
print('Client {} error. Done!'.format(address))
|
||
|
|
|
||
|
|
ip_addr = "0.0.0.0"
|
||
|
|
tcp_port = 5005
|
||
|
|
|
||
|
|
sel = selectors.DefaultSelector()
|
||
|
|
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||
|
|
server.bind((ip_addr, tcp_port))
|
||
|
|
server.listen(5) # max backlog of connections
|
||
|
|
|
||
|
|
server.setblocking(False) #Set to non-blocking
|
||
|
|
sel.register(server, selectors.EVENT_READ, handle_client_connection)
|
||
|
|
|
||
|
|
print('Listening on {}:{}'.format(ip_addr, tcp_port))
|
||
|
|
|
||
|
|
while True:
|
||
|
|
events = sel.select()
|
||
|
|
for key, mask in events:
|
||
|
|
print(key)
|
||
|
|
callback = key.data
|
||
|
|
selsocket=key.fileobj
|
||
|
|
callback(selsocket)
|