def test_server_hostname(self):
https_pool = HTTPSConnectionPool('127.0.0.1',
self.port,
cert_reqs='CERT_REQUIRED',
ca_certs=DEFAULT_CA,
server_hostname='localhost')
self.addCleanup(https_pool.close)
conn = https_pool._new_conn()
https_pool._start_conn(conn, connect_timeout=None)
# Assert the wrapping socket is using the passed-through SNI name.
# pyopenssl doesn't let you pull the server_hostname back off the
# socket, so only add this assertion if the attribute is there (i.e.
# the python ssl module).
# XXX This is highly-specific to SyncBackend
# See https://github.com/python-trio/urllib3/pull/54#discussion_r241683895
# for potential solutions
sock = conn._sock._sock
if hasattr(sock, 'server_hostname'):
self.assertEqual(sock.server_hostname, 'localhost')
