[racket] New Artifacts

Thank you - I learned some great practical tips, and also that I should 
read all the net/url docs.

On 04/27/2012 01:36 PM, Galler wrote:
>
> New Artifacts posted: Improved! Low-Fat! Exciting!
>   https://github.com/plt/racket/wiki/Artifacts
>
> 1. Specifying a HMAC-SHA1 stuffer for the stateless web-server
>
> 2. Split a string into lines
>
> 3. Fetch the contents of a URL
>
> 4. Generate a n-byte key for use in MAC authentication (like HMAC-SHA1)
>
> 5. How to generate a Message Authentication Code (MAC) and authenticate
> a signed message.
>
> 6. Controversial code: cleaning up state on exit, when errors are expected
>
> 7. Redirecting an HTTP-scheme URL to an HTTPS-scheme URL using two servlets
>
> 8. Parsing libpcap files
>
> 9. Directly calling the OpenSSL executable from Racket
>
> 10. More OpenSSL: generating an HMAC-SHA1 digest
>
> 11. How to generate a rotating key-value, which changes at some
> arbitrary interval.
>
> 12. AJAX: How to build a response to an HTTPXmlRequest
>
> 13. How to Build a Context-Free Grammar with Racket's unique
> Recursive Contract System
>
> Review! Debate! Criticize! Mock! Contribute!
>
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