Package fcgi implements the FastCGI protocol. Currently only the responder role is supported. The protocol is defined at http://www.fastcgi.com/drupal/node/6?q=node/22
Serve accepts incoming FastCGI connections on the listener l, creating a new goroutine for each. The goroutine reads requests and then calls handler to reply to them. If l is nil, Serve accepts connections from os.Stdin. If handler is nil, http.DefaultServeMux is used.