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Channels expects multiprocessing.Value for port.

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This commit is contained in:
Bryce Durham 2021-03-22 10:51:29 -07:00
parent df2d7bed94
commit d38c292040
1 changed files with 2 additions and 13 deletions
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15
daphne/testing.py
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@ -132,18 +132,9 @@ class DaphneProcess(multiprocessing.Process):
# prefer `type(None)` over `lambda x: None` for serialization in spawn mode
self.setup = setup or type(None)
self.teardown = teardown or type(None)
# ready event isn't really needed when blocking on Queue.get() but Channels calls into it
self.port = multiprocessing.Value("i")
self.ready = multiprocessing.Event()
self.errors = multiprocessing.Queue()
self.__port = None
self.__portqueue = multiprocessing.Queue()
@property
def port(self):
# lazy load the port so we don't block the main process waiting
if self.__port is None:
self.__port = self.__portqueue.get()
return self.__port
def run(self):
# Note: MacOS uses spawn by default since Python 3.8.
@ -192,9 +183,7 @@ class DaphneProcess(multiprocessing.Process):
from twisted.internet import reactor
if self.server.listening_addresses:
port = self.server.listening_addresses[0][1]
self.__portqueue.put(port)
# ready event isn't really needed when blocking on queue.get() but Channels calls into it
self.port.value = self.server.listening_addresses[0][1]
self.ready.set()
else:
reactor.callLater(0.1, self.resolve_port)