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await on send_request directly

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This commit is contained in:
Neil Booth 2018-07-25 10:05:24 +08:00
parent 8d3f98d3fd
commit db8ee48c2e
1 changed files with 26 additions and 30 deletions
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56
electrumx/server/peers.py
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@ -29,10 +29,9 @@ class BadPeerError(Exception):
pass
def assert_good(request, instance):
result = request.result()
def assert_good(message, result, instance):
if not isinstance(result, instance):
raise BadPeerError(f'{request} returned bad result type '
raise BadPeerError(f'{message} returned bad result type '
f'{type(result).__name__}')
@ -263,10 +262,10 @@ class PeerManager(object):
timeout = 20 if peer.is_tor else 10
# server.version goes first
request = session.send_request(
'server.version', self.server_version_args, timeout=timeout)
result = await request
assert_good(request, list)
message = 'server.version'
result = await session.send_request(
message, self.server_version_args, timeout=timeout)
assert_good(message, result, list)
# Protocol version 1.1 returns a pair with the version first
if len(result) != 2 or not all(isinstance(x, str) for x in result):
@ -284,10 +283,9 @@ class PeerManager(object):
await asyncio.gather(*jobs)
async def _send_headers_subscribe(self, session, peer, timeout, ptuple):
request = session.send_request('blockchain.headers.subscribe',
timeout=timeout)
result = await request
assert_good(request, dict)
message = 'blockchain.headers.subscribe'
result = await session.send_request(message, timeout=timeout)
assert_good(message, result, dict)
our_height = self.chain_state.db_height()
if ptuple < (1, 3):
@ -305,29 +303,29 @@ class PeerManager(object):
raw_header = self.chain_state.raw_header(check_height)
if ptuple >= (1, 4):
ours = raw_header.hex()
request = session.send_request('blockchain.block.header',
[check_height], timeout=timeout)
theirs = await request
assert_good(request, str)
message = 'blockchain.block.header'
theirs = await session.send_request(message, [check_height],
timeout=timeout)
assert_good(message, theirs, str)
if ours != theirs:
raise BadPeerError(f'our header {ours} and '
f'theirs {theirs} differ')
else:
ours = self.env.coin.electrum_header(raw_header, check_height)
request = session.send_request('blockchain.block.get_header',
[check_height], timeout=timeout)
result = await request
assert_good(request, dict)
theirs = result.get('prev_block_hash')
ours = ours.get('prev_block_hash')
message = 'blockchain.block.get_header'
theirs = await session.send_request(message, [check_height],
timeout=timeout)
assert_good(message, theirs, dict)
theirs = theirs.get('prev_block_hash')
if ours != theirs:
raise BadPeerError(f'our header hash {ours} and '
f'theirs {theirs} differ')
async def _send_server_features(self, session, peer, timeout):
request = session.send_request('server.features', timeout=timeout)
features = await request
assert_good(request, dict)
message = 'server.features'
features = await session.send_request(message, timeout=timeout)
assert_good(message, features, dict)
hosts = [host.lower() for host in features.get('hosts', {})]
if self.env.coin.GENESIS_HASH != features.get('genesis_hash'):
raise BadPeerError('incorrect genesis hash')
@ -337,10 +335,9 @@ class PeerManager(object):
raise BadPeerError(f'not listed in own hosts list {hosts}')
async def _send_peers_subscribe(self, session, peer, timeout):
request = session.send_request('server.peers.subscribe',
timeout=timeout)
raw_peers = await request
assert_good(request, list)
message = 'server.peers.subscribe'
raw_peers = await session.send_request(message, timeout=timeout)
assert_good(message, raw_peers, list)
# Check the peers list we got from a remote peer.
# Each is expected to be of the form:
@ -357,10 +354,9 @@ class PeerManager(object):
if not features:
return
self.logger.info(f'registering ourself with {peer}')
request = session.send_request('server.add_peer', [features],
timeout=timeout)
# We only care to wait for the response
await request
await session.send_request('server.add_peer', [features],
timeout=timeout)
def _set_verification_status(self, peer, kind, good):
'''Called when a verification succeeded or failed.'''