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Fix stream registration in accept_stream

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NIC619 2019-09-17 15:42:18 +08:00
parent 0080466d86
commit 559f419b4e
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GPG Key ID: 570C35F5C2D51B17
1 changed files with 11 additions and 10 deletions
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21
libp2p/stream_muxer/mplex/mplex.py
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@ -103,6 +103,12 @@ class Mplex(IMuxedConn):
self.next_channel_id += 1
return next_id
async def _initialize_stream(self, stream_id: StreamID, name: str) -> MplexStream:
async with self.streams_lock:
stream = MplexStream(name, stream_id, self)
self.streams[stream_id] = stream
return stream
async def open_stream(self) -> IMuxedStream:
"""
creates a new muxed_stream
@ -112,29 +118,24 @@ class Mplex(IMuxedConn):
stream_id = StreamID(channel_id=channel_id, is_initiator=True)
# Default stream name is the `channel_id`
name = str(channel_id)
async with self.streams_lock:
stream = MplexStream(name, stream_id, self)
stream = await self._initialize_stream(stream_id, name)
await self.send_message(HeaderTags.NewStream, name.encode(), stream_id)
# TODO: is there a way to know if the peer accepted the stream?
# then we can safely register the stream
self.streams[stream_id] = stream
return stream
async def accept_stream(self, stream_id: StreamID, name: str) -> None:
"""
accepts a muxed stream opened by the other end
"""
async with self.streams_lock:
stream = MplexStream(name, stream_id, self)
stream = await self._initialize_stream(stream_id, name)
# Perform protocol negotiation for the stream.
try:
await self.generic_protocol_handler(stream)
except MultiselectError:
# TODO: what to do when stream protocol negotiation fail?
# Un-register and reset the stream
del self.streams[stream_id]
await stream.reset()
return
self.streams[stream_id] = stream
async def send_message(
self, flag: HeaderTags, data: Optional[bytes], stream_id: StreamID
) -> int: