study_20241026/beginning-python-3ed-master/Chapter14/listing14-7.py

import socket, select

s = socket.socket()

host = socket.gethostname()
port = 1234
s.bind((host, port))

fdmap = {s.fileno(): s}


s.listen(5)
p = select.poll()
p.register(s)
while True:
    events = p.poll()
    for fd, event in events:
        if fd in fdmap:
            c, addr = s.accept()
            print 'Got connection from', addr
            p.register(c)
            fdmap[c.fileno()] = c
        elif event & select.POLLIN:
            data = fdmap[fd].recv(1024)
            if not data: # No data -- connection closed
                print fdmap[fd].getpeername(), 'disconnected'
                p.unregister(fd)
                del fdmap[fd]
            else:
                print data