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network.best_effort_reliable: force DC if req times out; retry on new iface

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SomberNight 2018-09-27 21:15:07 +02:00
parent 4984890265
commit 3e2c5e8656
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GPG key ID: B33B5F232C6271E9
2 changed files with 19 additions and 9 deletions
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1
electrum/interface.py
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@ -130,7 +130,6 @@ def serialize_server(host: str, port: Union[str, int], protocol: str) -> str:
class Interface(PrintError):
def __init__(self, network, server, config_path, proxy):
self.exception = None
self.ready = asyncio.Future()
self.got_disconnected = asyncio.Future()
self.server = server

27
electrum/network.py
View file

@ -642,17 +642,28 @@ class Network(PrintError):
async def make_reliable_wrapper(self, *args, **kwargs):
for i in range(10):
iface = self.interface
session = iface.session if iface else None
if not session:
# no main interface; try again
# retry until there is a main interface
if not iface:
await asyncio.sleep(0.1)
continue
continue # try again
# wait for it to be usable
iface_ready = iface.ready
iface_disconnected = iface.got_disconnected
await asyncio.wait([iface_ready, iface_disconnected], return_when=asyncio.FIRST_COMPLETED)
if not iface_ready.done() or iface_ready.cancelled():
await asyncio.sleep(0.1)
continue # try again
# try actual request
success_fut = asyncio.ensure_future(func(self, *args, **kwargs))
disconnected_fut = asyncio.shield(iface.got_disconnected)
await asyncio.wait([success_fut, disconnected_fut], return_when=asyncio.FIRST_COMPLETED)
if success_fut.done():
await asyncio.wait([success_fut, iface_disconnected], return_when=asyncio.FIRST_COMPLETED)
if success_fut.done() and not success_fut.cancelled():
if success_fut.exception():
raise success_fut.exception()
try:
raise success_fut.exception()
except RequestTimedOut:
await iface.close()
await iface_disconnected
continue # try again
return success_fut.result()
# otherwise; try again
raise Exception('no interface to do request on... gave up.')