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
"""