It would be nice to have the probing interval and the failure count available on sockets for keep-alive's.
Caveat: These will not work on Windows but work on Linux 2.4+.
These changes should probably be offered into to joyent/libuv, not to joyent/node.
Added interval and count to setKeepAlive.
Thanks AllSeeingEye. Missed the other repo. I made the changes in libuv and fixed my commit to remove the changes to deps.
The libuv pull request is: joyent/libuv#269
Moving to master. New pull request: joyent#4882