http@ — gets a web page from a remote host.
http@ uses tcpclient(1) to connect to TCP port
host, sends an HTTP 1.0 request for
page, and prints any data that it receives.
It uses delcr(1) to remove CR (\015).
Unprintable characters are output as-is.
The HTTP request is
page HTTP 1.0
host is not supplied, http@ connects to the local host.
page is not supplied, http@ requests
port is not supplied, http@ uses port 80.
TCP port 80 is the well-known port for the HTTP service.
Some computers respond to HTTP requests on this port.
For example, they may be running
tcpserver -R -H -l0 0 80 httpd /public/file/ using tcpserver(1) and httpd(1).