Re: proxy returning empty hits only in emacs

[Sam Halliday <sam.halliday@gmail.com>]

Updated with more info below...

On Thursday, 12 March 2015 15:17:01 UTC, Sam Halliday  wrote:
> Hi all,
> 
> I installed Debian Jessie over Ubuntu Vervet following a kernel update disaster.
> 
> However, following the change emacs (both 24.4) is unable to make use of my proxy.
> 
> I have a CNTLM proxy on localhost which does not require additional authentication, e.g.
> 
>   export http_proxy=http://localhost:3128/
>   export https_proxy=https://localhost:3128/
>   export no_proxy="localhost,*.my-company.com"
>   export ftp_proxy=${http_proxy}
> 
> which is picked up by the X environment, and emacs appears to use it automatically because issuing a `(package-refresh-contents)` gives
> 
>   Importing package-keyring.gpg...done
>   Using a proxy for http...
>   Contacting host: localhost:3128
>   Failed to download `gnu' archive.
>   Failed to download `melpa' archive.
>   nil
> 
> However I can't get any more debugging information than this, despite turning on (setq debug-on-error t). I'd like to know *why* it is failing so that I can fix it.
> 
> I also tried running url-copy-file:
>  
>   (url-copy-file "http://google.com/"  "google.html")
> 
> but this simply creates an empty file.
> 
> The proxy is working fine for everything else on the system (and, except for a few special cases, everything picks up the envvars).
> 
> I've even tried this (which is pretty pointless, because emacs is clearly using the correct proxy):
> 
>   (setq url-proxy-services
>    '(("no_proxy" . "^\\(localhost\\|10.*\\)")
>      ("http" . "localhost:3128")
>      ("https" . "localhost:3128")))
> 
> as expected, it changes nothing.
> 
> Is there something else I'm missing?
> 
> Best regards,
> Sam


Using 

(defun print-url (url)
  (url-retrieve url (lambda (a) (print a))))

(print-url "http://google.com")

I get the error

Contacting host: localhost:3128
#<buffer  *http localhost:3128*-981030>
(:error (error connection-failed "failed with code 111
" :host "localhost" :service 3128))

but a telnet session to localhost:3128 is perfectly fine.

Very bizarre! Ideas welcome.