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bugfix: return empty bytes immediately if read length is 0

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Alex Stokes 2019-11-07 20:57:55 -08:00
parent 4b01c33d54
commit 2a7b43d853
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1 changed files with 3 additions and 0 deletions
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3
libp2p/security/secio/transport.py
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@ -111,6 +111,9 @@ class SecureSession(BaseSession):
self.high_watermark = len(msg) self.high_watermark = len(msg)
async def read(self, n: int = -1) -> bytes: async def read(self, n: int = -1) -> bytes:
if n == 0:
return bytes()
data_from_buffer = self._drain(n) data_from_buffer = self._drain(n)
if len(data_from_buffer) > 0: if len(data_from_buffer) > 0:
return data_from_buffer return data_from_buffer