<p>In the <code>Server</code> response header returned from my site hosted on Heroku and served by <code>NodeJS</code>/<code>express</code>, I see the value <code>Cowboy</code>.</p> <ul> <li>Who's outputting that value for <code>Server</code>?</li> <li>Bonus, what's the "etymology"/reason for using <code>Cowboy</code> as the value for <code>Server</code>?</li> </ul>

<p>Bonus answer "etymology": It doesn't say on it's GitHub page (https://github.com/heroku/cowboy), but here are some guesses:</p> <ul> <li>Because it runs on Ranch (https://github.com/heroku/ranch): Ranch is a socket acceptor pool for TCP protocols? </li> <li>Possibly also because it sees Apache as a competitor?</li> </ul>

Server Response Header "Cowboy"

2 Answers

That would probably be heroku/cowboy. "Cowboy" is just an arbitrary project name that ninenines/cowboy chose. It's just as random as "Apache" (a patchy version of its predecessor), "nginx", "unicorn", etc.

177

answered Oct 20 '22 00:10

Peter Lyons

Bonus answer "etymology": It doesn't say on it's GitHub page (https://github.com/heroku/cowboy), but here are some guesses:

Because it runs on Ranch (https://github.com/heroku/ranch): Ranch is a socket acceptor pool for TCP protocols?
Possibly also because it sees Apache as a competitor?

answered Oct 19 '22 23:10

cyberspy

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Server Response Header "Cowboy"

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Peter Lyons

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