问是否可以通过相同的TCP连接从服务器发送异步通知到客户端？

EN

from eventlet       import connect, sleep, GreenPool
from eventlet.queue import Queue


def handle_i(sock, queue):
    while True:
        data = sock.recv(8)

        if data:
            print(data)
        else:
            queue.put(None) #<- signal send side of duplex to exit
            break

def handle_o(sock, queue):
    while True:
        data = queue.get()

        if data:
            sock.send(data)
        else:
            break

queue = Queue()
sock  = connect(('127.0.0.1', 8000))

gpool = GreenPool()
gpool.spawn(handle_i, sock, queue)
gpool.spawn(handle_o, sock, queue)

for i in range(0, 3):
    queue.put(str(i))
    sleep(1)

gpool.waitall() #<- waits until nc exits