Gopher URLs are a little more complicated than file URLs, since Gopher servers are a little tricker to deal with than FTP servers. To visit a particular gopher server (say, the gopher server on gopher.yoyodyne.com), use this URL:
gopher://gopher.yoyodyne.com/
Some gopher servers may reside on unusual network ports on their host
machines. (The default gopher port number is 70.) If you know that
the gopher server on the machine "gopher.banzai.edu"
is on
port 1234 instead of port 70, then the corresponding URL would be:
gopher://gopher.banzai.edu:1234/