joyent/node — pull request #3197 by xenyou (2012-05-01 02:44:57+00:00)
Title: add a child domain explicitly.

domain isn't added to other domain implicitly.

http://nodejs.org/docs/v0.7.8/api/domain.html#domain_implicit_binding
"If you want to nest Domain objects as children of a parent Domain,
then you must explicitly add them, and then dispose of them later. "