How to determine which server is listening on port 80

Question

I need to determine which web server (IIS, Apache, Jetty) is running on port 80 in Java.

Are there any solutions for getting information through port 80?

Thanx and reguards

Stephen

Answer 1

You can ask a question - issue a HEAD request, for example. open a TCP connection on port 80 and just send

HEAD / HTTP/1.0

or

HEAD / HTTP/1.1
Host: the.server.hostname.com

and the response should contain a server line

Server: Microsoft-IIS/5.1

by the way.

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Answer 2

Server: HTTP-. - :

Server: Apache/2.2.10 (SpaceNet) PHP/5.2.6

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