py-libp2p/libp2p/protocol_muxer/multiselect_communicator_interface.py

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from abc import ABC, abstractmethod
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class IMultiselectCommunicator(ABC):
"""Communicator helper class that ensures both the client and multistream
module will follow the same multistream protocol, which is necessary for
them to work."""
@abstractmethod
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async def write(self, msg_str: str) -> None:
"""Write message to stream.
:param msg_str: message to write
"""
@abstractmethod
async def read(self) -> str:
"""Reads message from stream until EOF."""