Re: HTTP POST requests with url.el

[Tassilo Horn <heimdall@uni-koblenz.de>]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

Hi Stefan,

>>          (url-request-data (concat "u=" emms-lastfm-username
>>                                    "&s=" (md5 (concat
>>                                                (md5 emms-lastfm-password)
>>                                                emms-lastfm-md5-challenge))
>>                                    "&a[0]=" artist
>>                                    "&t[0]=" title
>>                                    "&b[0]=" album
>>                                    "&m[0]=" musicbrainz-id
>>                                    "&l[0]=" track-length
>>                                    "&i[0]=" date "\r\n")))
>
>> Does anyone know what I'm doing wrong, or how I can find the bug?
>
> Could it be that the data needs to be be url-encoded (SPC -> %20)?

I stole the url-encoding function from http-get.el:

--8<---------------cut here---------------start------------->8---
(defun http-url-encode (str content-type)
  "URL encode STR using CONTENT-TYPE as the coding system."
  (apply 'concat
   (mapcar (lambda (c)
       (if (or (and (>= c ?a) (<= c ?z))
         (and (>= c ?A) (<= c ?Z))
         (and (>= c ?0) (<= c ?9)))
           (string c)
         (format "%%%02x" c)))
     (encode-coding-string str content-type))))
--8<---------------cut here---------------end--------------->8---

So I tried sending this:

u%3dheimdall80%26s%3d75e64782c62944cf3a0bf850a2c45d7c%26a%5b0%5d%3dLeonard%20Cohen%26t%5b0%5d%3dThe%20Future%20%28Edited%29%26b%5b0%5d%3dNatural%20Born%20Killers%26m%5b0%5d%3d%26l%5b0%5d%3d229%26i%5b0%5d%3d2006%2d10%2d20%2019%3a29%3a33

But it fails with the same error.

Another idea?

Bye and thanks,
Tassilo
-- 
A child of five could understand this! Fetch me a child of five!