[racket] escaping binary data in url

From: Veer (diggerrrrr at gmail.com)
Date: Sun Aug 14 07:38:30 EDT 2011

I figured it out, it is not that complex as I thought initially , also
I thought url constructor
was escaping the data.
Thanks all for the help.

On Sat, Aug 13, 2011 at 9:37 AM, Veer <diggerrrrr at gmail.com> wrote:
> Since server part expects escaped data based on rfc 1738 , I "assume"
> that it will not be able to interpret the data as base64 encoding.
> As per bittorrent spec , the get request to tracker must have
> info_hash(20 byte sha) escaped along with others.
> Is there any other way to insert query part in url without getting
> escaped twice , so that I can use existing function like get-pure-port
> etc.
> Thanks
> On Fri, Aug 12, 2011 at 11:08 PM, Danny Yoo <dyoo at cs.wpi.edu> wrote:
>> The library already does some URL encoding for you, as "%" is an
>> illegal character in a query string, since that's the escape character
>> itself for arbitrary bytes,  "%25" gets translated down to...
>> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
>>> (integer->char (string->number "25" 16))
>> #\%
>> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
>> ... that percent sign.
>> Would using base64-encode (from the net/base64 library) work for you?
>> You can take your bytes and feed them through base64-encode; the
>> result should be something that can be a part of URLs.

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