[R] proxy settings

[Prof Brian Ripley]

On Tue, 17 Apr 2007, Antonio Olinto wrote:

> Hi all,
>
> I used to connect internet via a proxy. Before update packages I wrote in R
>
> Sys.putenv("http_proxy"="http://proxy3.redegov.sp.gov.br:80/")
>
> Nevertheless the way the connection is done has changed. For example, in the
> browser the proxy is not indicated and I have to give an username and a
> password to have access to internet.

This is nothing to do with a browser: see below.

> I read the FAQ and the help for download.file but I was not able to do updates.
>
> I tried
> Sys.putenv("http_proxy_user"="ask")
> Sys.putenv("http_proxy_user"="http://****:****")

It does say

Setting Proxies:

      This applies to the internal code only.
...
      These environment variables must be set before the download code
      is first used: they cannot be altered later by calling
      'Sys.setenv'.

You can debug the download.file() session via option() 'internet.info', 
which should show you what is happening.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595