[racket] Client-side cookies

Out of curiosity, are there any extant plans or efforts beyond Jay's work
on http-client aimed at net/ related functionality?


Just wondering,
Evan


On Thu, Jan 9, 2014 at 5:08 PM, Roman Klochkov <kalimehtar at mail.ru> wrote:

> I'm making fully RFC6265 compliant cookie support for net/url and http.
> https://github.com/Kalimehtar/client-cookies
>
> It is still pre-alpha, but, I hope, will be ready in 2-3 weeks.
>
>
> Среда, 8 января 2014, 10:33 -07:00 от Matthew Flatt <mflatt at cs.utah.edu>:
>
>   In case no one offers a better library, enclosed is a small one that I
> recently created for a web-scraping task.
>
> Start a simulation of a browser with `make-connection`, use `goto!` to
> follow a link to a relative URL (following redirects), and use `back!`
> to go back. The `goto!` function returns two values: the headers as a
> string and the page content as bytes.
>
> Beware: My application accessed a single site, so this library doesn't
> attempt to do the right thing with cookies across sites.
>
> At Wed, 08 Jan 2014 03:48:44 -0800, Duncan Bayne wrote:
> > Hi All,
> >
> > I'm trying to re-write some Common Lisp web-scraping code in Racket.
> >
> > In Common Lisp, I'm POSTing a login request, and storing the cookie-jar
> > for subsequent GETs:
> >
> > (defun login (username password)
> > "Logs in to www.example.com. Returns a cookie-jar containing
> > authentication details."
> > (let ((cookie-jar (make-instance 'drakma:cookie-jar)))
> > (drakma:http-request "http://www.example.com/login"<http://www.example.com/login>
> > :method :post
> > :parameters `(("username" . ,username) ("password" .
> > ,password))
> > :cookie-jar cookie-jar)
> > cookie-jar))
> >
> > ; snip
> >
> > (defun get-page (page-num cookie-jar)
> > "Downloads a potentially invalid HTML page containing data to scrape.
> > Returns a string containing the HTML."
> > (let ((url (concatenate 'string "http://www.example.com/data/"<http://www.example.com/data/>
> > (write-to-string page-num))))
> > (let ((body (drakma:http-request url :cookie-jar cookie-jar)))
> > (if (search "No data found." body)
> > nil
> > body))))
> >
> > However, I can't find an equivalent in Racket. The latest HTTP
> > library[1] makes no mention of cookies at all, and AFAICT the cookie
> > library[2] seems more about correctly serializing and deserializing
> > them.
> >
> > Can anyone suggest a way of re-writing the above CL in Racket without
> > having to implement a bunch of header-parsing stuff?
> >
> > TIA for any help ...
> >
> > [1]
> >
> https://github.com/plt/racket/blob/master/racket/collects/net/http-client.rkt
> > [2] http://docs.racket-lang.org/net/cookie.html
> >
> > --
> > Duncan Bayne
> > ph: +61 420817082 | web: http://duncan-bayne.github.com/ | skype:
> > duncan_bayne
> >
> > I usually check my mail every 24 - 48 hours. If there's something
> > urgent going on, please send me an SMS or call me.
> > ____________________
> > Racket Users list:
> > http://lists.racket-lang.org/users
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>
>
> --
> Roman Klochkov
>
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>
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