Fix the threading infrastructure in test_socket to support skipping tests from the setUp() routine. This fixes a refleak in test_socket on some machines.
Fix the threading infrastructure in test_socket to support skipping
tests from the setUp() routine.
This fixes a refleak in test_socket on some machines.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator