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fix reply concurrency

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This commit is contained in:
Maximilian Hils 2016-08-04 17:03:27 -07:00
parent dcfa7027ae
commit a52a1df23c
1 changed files with 22 additions and 2 deletions
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24
mitmproxy/controller.py
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@ -222,7 +222,9 @@ def handler(f):
# Reset the handled flag - it's common for us to feed the same object
# through handlers repeatedly, so we don't want this to persist across
# calls.
if message.reply.handled:
if handling:
if not message.reply.taken:
message.reply.commit()
message.reply.handled = False
return ret
# Mark this function as a handler wrapper
@ -230,6 +232,9 @@ def handler(f):
return wrapper
NO_REPLY = object()
class Reply(object):
"""
Messages sent through a channel are decorated with a "reply" attribute.
@ -241,6 +246,8 @@ class Reply(object):
self.q = queue.Queue()
# Has this message been acked?
self.acked = False
# What's the ack message?
self.ack_message = NO_REPLY
# Has the user taken responsibility for ack-ing?
self.taken = False
# Has a handler taken responsibility for ack-ing?
@ -258,8 +265,21 @@ class Reply(object):
def send(self, msg):
if self.acked:
raise exceptions.ControlException("Message already acked.")
if self.ack_message != NO_REPLY:
# We may have overrides for this later.
raise exceptions.ControlException("Message already has a response.")
self.acked = True
self.q.put(msg)
self.ack_message = msg
if self.taken:
self.commit()
def commit(self):
"""
This is called by the handler to actually send the ack message.
"""
if self.ack_message == NO_REPLY:
raise exceptions.ControlException("Message has no response.")
self.q.put(self.ack_message)
def __del__(self):
if not self.acked: