Package fcgi implements the FastCGI protocol.
The protocol is not an official standard and the original documentation is no longer online. See the Internet Archive's mirror at: https://web.archive.org/web/20150420080736/http://www.fastcgi.com/drupal/node/6?q=node/22
Currently only the responder role is supported.
ErrConnClosed is returned by Read when a handler attempts to read the body of a request after the connection to the web server has been closed.
ErrRequestAborted is returned by Read when a handler attempts to read the body of a request that has been aborted by the web server.
ProcessEnv returns FastCGI environment variables associated with the request r for which no effort was made to be included in the request itself - the data is hidden in the request's context. As an example, if REMOTE_USER is set for a request, it will not be found anywhere in r, but it will be included in ProcessEnv's response (via r's context).
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.