test_ssl.py 文件源码

def test_ssl_handshake_failure_during_aclose():
    # Weird scenario: aclose() triggers an automatic handshake, and this
    # fails. This also exercises a bit of code in aclose() that was otherwise
    # uncovered, for re-raising exceptions after calling aclose_forcefully on
    # the underlying transport.
    async with ssl_echo_server_raw(expect_fail=True) as sock:
        # Don't configure trust correctly
        client_ctx = stdlib_ssl.create_default_context()
        s = tssl.SSLStream(
            sock, client_ctx, server_hostname="trio-test-1.example.org"
        )
        # It's a little unclear here whether aclose should swallow the error
        # or let it escape. We *do* swallow the error if it arrives when we're
        # sending close_notify, because both sides closing the connection
        # simultaneously is allowed. But I guess when https_compatible=False
        # then it's bad if we can get through a whole connection with a peer
        # that has no valid certificate, and never raise an error.
        with pytest.raises(BrokenStreamError) as excinfo:
            await s.aclose()