"select" in Racket

I want to write an event loop single threaded web server to deal with each request in Racket. I see there are select method in unix that I can call, Is there 开发者_如何转开发anything similar in Racket API that I can call? or I should write my own select method which is to polling the ready fds? Thanks in advance!

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Apologies if I'm misunderstanding your question, but it sounds like you'll probably want to use tcp-listen on certain ports; success here will create input ports. In order to synchronize on multiple open input ports, check out "synchronizable events"; you can use 'sync' on a whole bunch of open ports simultaneously.

I would be remiss if I failed to add that there's a complete web server included with Racket; I'm assuming that you have your own reasons for wanting to re-implement this.