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22 lines
676 B
Python
22 lines
676 B
Python
import struct
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from .connection import Connection
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class ConnectionTcpIntermediate(Connection):
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"""
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Intermediate mode between `ConnectionTcpFull` and `ConnectionTcpAbridged`.
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Always sends 4 extra bytes for the packet length.
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"""
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async def connect(self, timeout=None, ssl=None):
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await super().connect(timeout=timeout, ssl=ssl)
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self._writer.write(b'\xee\xee\xee\xee')
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await self._writer.drain()
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def _send(self, data):
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self._writer.write(struct.pack('<i', len(data)) + data)
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async def _recv(self):
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return await self._reader.readexactly(
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struct.unpack('<i', await self._reader.readexactly(4))[0])
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