port 80 in use code example
Example 1: port 80
Port 80 is one of the most commonly used port numbers in the
Transmission Control Protocol (TCP) suite.
Any Web/HTTP client, such as a Web browser, uses port 80 to send
and receive requested Web pages from a HTTP server. It manages
all HTTP-based requests that originate from a computer, regardless
of the number of requests and initiating Web clients.
Similarly, the HTTP server responds to all requests received at port 80.
Example 2: what uses port 80
netstat -aon | findstr :80