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wormhole: handle w.close() after error-induced closure

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This commit is contained in:
Brian Warner 2017-03-04 23:05:52 +01:00
parent 2422ee0b88
commit ddb83e9d59
1 changed files with 7 additions and 4 deletions
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11
src/wormhole/wormhole.py
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@ -146,6 +146,7 @@ class _DeferredWormhole(object):
self._version_observers = []
self._received_data = []
self._received_observers = []
self._closed_result = None
self._closed_observers = []
def _set_boss(self, boss):
@ -206,7 +207,9 @@ class _DeferredWormhole(object):
# fails with WormholeError unless we established a connection
# (state=="happy"). Fails with WrongPasswordError (a subclass of
# WormholeError) if state=="scary".
self._boss.close()
if self._closed_result:
return defer.succeed(self._closed_result) # maybe Failure
self._boss.close() # only need to close if it wasn't already
d = defer.Deferred()
self._closed_observers.append(d)
return d
@ -245,12 +248,12 @@ class _DeferredWormhole(object):
def closed(self, result):
#print("closed", result, type(result))
if isinstance(result, Exception):
observer_result = close_result = failure.Failure(result)
observer_result = self._closed_result = failure.Failure(result)
else:
# pending w.verify()/w.version()/w.read() get an error
observer_result = WormholeClosed(result)
# but w.close() only gets error if we're unhappy
close_result = result
self._closed_result = result
for d in self._verifier_observers:
d.errback(observer_result)
for d in self._version_observers:
@ -258,7 +261,7 @@ class _DeferredWormhole(object):
for d in self._received_observers:
d.errback(observer_result)
for d in self._closed_observers:
d.callback(close_result)
d.callback(self._closed_result)
def create(appid, relay_url, reactor, delegate=None, journal=None,