Re: url-cache - (require 'url)

[Mark Plaksin <happy@usg.edu>]

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

>>>> It would also be nice if there was an easy way to get at the HTTP headers
>>>> associated with a response.  Maybe there is a way but I can't find it.
>>> 
>>> Maybe for that, url-http is more appropriate.
>>> After all, there won't be any HTTL headers if the URL is not using HTTP.
>
>> Right.  How about this patch to url-http.el?
>
>> Test like this:
>> (setq url-http-save-headers t)
>> (url-retrieve-synchronously "http://rss.slashdot.org/Slashdot/slashdot")
>> (setq url-http-save-headers nil)
>
> I'm not sure I understand what you mean by "agreed".  At first it seems you
> agree that url-http is preferable, but then the example code that uses your
> patch uses url-retrieve.

I agree that the code which stores HTTP headers in a variable belongs in
url-http.el.  It's easier to test by calling url-retrieve but you can also
test by calling url-http:

(url-http (url-generic-parse-url "http://www.usg.edu/") (lambda ()) nil)
(setq url-http-save-headers t)
(url-retrieve-synchronously "http://rss.slashdot.org/Slashdot/slashdot")
(setq url-http-save-headers nil)

At this point url-http-headers should contain the HTTP headers returned by
www.usg.edu.