We developed an alternate asyncio TLS transport based on GnuTLS (https://pypi.org/project/aio-gnutls-transport/). In this project we want to support half-closed TLS connections (WriteTransport.write_eof()).


Unfortunately StreamReaderProtocol won't interoperate properly without a monkey patch because its eof_received() method returns True for any ssl transport (this is to avoid a warning in the _SSLProtocolTransport):

    def eof_received(self):
        self._stream_reader.feed_eof()
        if self._over_ssl:
            # Prevent a warning in SSLProtocol.eof_received:
            # "returning true from eof_received()
            # has no effect when using ssl"
            return False
        return True

As this is an unspecified internal feature, very specific to the _SSLProtocolTransport class (which issues the warning), we think the test should be made explicitly against this class (see the attached patch).