Is there a kind of "Socket connection pool" in nodejs?

In order to avoid the time spent on the creation of the sockets. My node server need some "long connection"(TCP Socket) to keep communicating with the server written in C which runs in the background, and all the 'http request' could share the TCP sockets in the pool. I wonder if there is a kind of socket pool implementation in nodejs? (something like the database connection pool)

Any help will be appreciated !