I think callback style is better then just returning values for the host 
and port. If hostname is stored in a database then you might run into 
problems.

On Friday, June 15, 2012 9:45:29 AM UTC-4, Dominic wrote:
>
> so, 
>
> For a while I've been wondering, could I make a *really* simple proxy? 
>
> Although in http 1.1 multiple requests may be made in the same tcp 
> connection, a well behaved client is not allowed 
> to make requests to different hosts in the same connection, so this 
> begs the question: is it necessary to properly parse http? 
> as long as you can parse the first header, and then connect the tcp 
> stream to the right place... then every thing should just work, 
> including WebSockets. 
>
> It was marak who originally suggested this idea to me. 
>
> so, today I actually tried it... and it looks like: IT WORKED!!! 
>
> https://github.com/dominictarr/badass 
>
> npm install badass 
>
> I've implemented just enough to make a load-balancer with sticky 
> sessions. basically it just matches the text before the first empty 
> line. pulls out the headers with a few regexps, and then just sends 
> the rest through as buffers. it also extracts the first header on the 
> response, so you can force a cookie to get sticky sessions. 
>
> it's only about 100 lines, and it does next to nothing to the tcp 
> stream, so it should be really fast. 
>
> but I havn't benchmarked it yet. 
>
> also, I havn't written a detailed test suite that cover all the error 
> paths. 
> (connections unexpectedly closing etc) 
>
> There are some things that will never do, like, deliver it's own error 
> messages. 
> But thats okay. I'm trying to be ruthlessly simple. 
> If you want a fully featured proxy, use something else. 
>
> cheers, Dominic 
>

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