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# this example forks() and thus won't work on Windows.
from __future__ import print_function
import os
import signal
import socket
import Pyro4
# it's okay to use Pickle because we trust our own processes, and it is efficient
Pyro4.config.SERIALIZER = "pickle"
Pyro4.config.SERIALIZERS_ACCEPTED |= {"pickle"}
# create our own socket pair (server-client sockets that are already connected)
sock1, sock2 = socket.socketpair()
pid = os.fork()
if pid == 0:
# we are the child process, we host the daemon.
class Echo(object):
@Pyro4.expose
def echo(self, message):
print("server got message: ", message)
return "thank you"
# create a daemon with some Pyro objectrunning on our custom server socket
daemon = Pyro4.Daemon(connected_socket=sock1)
daemon.register(Echo, "echo")
print("Process PID={:d}: Pyro daemon running on {:s}\n".format(os.getpid(), daemon.locationStr))
daemon.requestLoop()
else:
# we are the parent process, we create a Pyro client proxy
print("Process PID={:d}: Pyro client.\n".format(os.getpid()))
# create a client running on the client socket
with Pyro4.Proxy("echo", connected_socket=sock2) as p:
reply = p.echo("hello!")
print("client got reply:", reply)
reply = p.echo("hello again!")
print("client got reply:", reply)
with Pyro4.Proxy("echo", connected_socket=sock2) as p:
reply = p.echo("hello2!")
print("client got reply:", reply)
reply = p.echo("hello2 again!")
print("client got reply:", reply)
os.kill(pid, signal.SIGTERM)
os.waitpid(pid, 0)
print("\nThe end.")
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