deb-python-eventlet/examples/zmq_chat.py

68 lines
1.6 KiB
Python

import eventlet
import sys
from eventlet.green import socket, zmq
from eventlet.hubs import use_hub
use_hub('zeromq')
ADDR = 'ipc:///tmp/chat'
ctx = zmq.Context()
def publish(writer):
print("connected")
socket = ctx.socket(zmq.SUB)
socket.setsockopt(zmq.SUBSCRIBE, "")
socket.connect(ADDR)
eventlet.sleep(0.1)
while True:
msg = socket.recv_pyobj()
str_msg = "%s: %s" % msg
writer.write(str_msg)
writer.flush()
PORT = 3001
def read_chat_forever(reader, pub_socket):
line = reader.readline()
who = 'someone'
while line:
print("Chat:", line.strip())
if line.startswith('name:'):
who = line.split(':')[-1].strip()
try:
pub_socket.send_pyobj((who, line))
except socket.error as e:
# ignore broken pipes, they just mean the participant
# closed its connection already
if e[0] != 32:
raise
line = reader.readline()
print("Participant left chat.")
try:
print("ChatServer starting up on port %s" % PORT)
server = eventlet.listen(('0.0.0.0', PORT))
pub_socket = ctx.socket(zmq.PUB)
pub_socket.bind(ADDR)
eventlet.spawn_n(publish,
sys.stdout)
while True:
new_connection, address = server.accept()
print("Participant joined chat.")
eventlet.spawn_n(publish,
new_connection.makefile('w'))
eventlet.spawn_n(read_chat_forever,
new_connection.makefile('r'),
pub_socket)
except (KeyboardInterrupt, SystemExit):
print("ChatServer exiting.")