It looks like StremReader.read() not work and StremReader.readline() in Windows or I am not understand documentation.

https://docs.python.org/3/library/asyncio-stream.html

coroutine read(n=-1)

    Read up to n bytes. If n is not provided, or set to -1, read until EOF and return all read bytes.

    If EOF was received and the internal buffer is empty, return an empty bytes object.



coroutine readline()

    Read one line, where “line” is a sequence of bytes ending with \n.

    If EOF is received and \n was not found, the method returns partially read data.

    If EOF is received and the internal buffer is empty, return an empty bytes object.