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detect lost connection

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supersedes #4697
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SomberNight 2018-09-07 20:26:45 +02:00
parent 56c3c76d8b
commit 7500b1fbee
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1 changed files with 8 additions and 1 deletions
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9
electrum/interface.py
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@ -68,7 +68,7 @@ class NotificationSession(ClientSession):
assert False, request.method assert False, request.method
# FIXME this is often raised inside a TaskGroup, but then it's not silent :(
class GracefulDisconnect(AIOSafeSilentException): pass class GracefulDisconnect(AIOSafeSilentException): pass
@ -238,8 +238,15 @@ class Interface(PrintError):
async with self.group as group: async with self.group as group:
await group.spawn(self.run_fetch_blocks(subscription_res, copy_header_queue)) await group.spawn(self.run_fetch_blocks(subscription_res, copy_header_queue))
await group.spawn(self.subscribe_to_headers(header_queue, copy_header_queue)) await group.spawn(self.subscribe_to_headers(header_queue, copy_header_queue))
await group.spawn(self.monitor_connection())
# NOTE: group.__aexit__ will be called here; this is needed to notice exceptions in the group! # NOTE: group.__aexit__ will be called here; this is needed to notice exceptions in the group!
async def monitor_connection(self):
while True:
await asyncio.sleep(1)
if not self.session or self.session.is_closing():
raise GracefulDisconnect('server closed session')
async def subscribe_to_headers(self, header_queue, copy_header_queue): async def subscribe_to_headers(self, header_queue, copy_header_queue):
while True: while True:
try: try: