[R] Problems with url/download and http_proxy

[ripley@stats.ox.ac.uk]

The port is not supposed to be required, so rather than fix the docs can
anyone fix the problem?


On Tue, 18 Jun 2002, Warnes, Gregory R wrote:

>
> Just adding the trailing slash doesn't seem to help:
>
> 	> Sys.getenv('http_proxy')
> 	                  http_proxy
> 	"http://gproxy1.pfizer.com/"
>
> 	> url("http://cran.r-project.org/src/contrib/PACKAGES",'r')
> 	connect: Cannot assign requested address
> 	unable to connect to 'gproxy1.pfizer.com'.
> 	Error in url("http://cran.r-project.org/src/contrib/PACKAGES", "r")
> :
> 	        cannot open URL
> `http://cran.r-project.org/src/contrib/PACKAGES'
>
> But adding the port explicitly does:
>
> 	> Sys.getenv("http_proxy")
> 	                     http_proxy
> 	"http://gproxy1.pfizer.com:80/"
> 	>  url("http://cran.r-project.org/src/contrib/PACKAGES",'r')
> 	                                     description
> 	"http://cran.r-project.org/src/contrib/PACKAGES"
> 	                                           class
> 	                                           "url"
> 	                                            mode
> 	                                             "r"
> 	                                            text
> 	                                          "text"
> 	                                          opened
> 	                                        "opened"
> 	                                        can read
> 	                                           "yes"
> 	                                       can write
> 	                                            "no"
>
>
>
> even if the trailing slash is not present:
>
> > Sys.getenv("http_proxy")
>                     http_proxy
> "http://gproxy1.pfizer.com:80"
>
> > url("http://cran.r-project.org/src/contrib/PACKAGES",'r')
>                                      description
> "http://cran.r-project.org/src/contrib/PACKAGES"
>                                            class
>                                            "url"
>                                             mode
>                                              "r"
>                                             text
>                                           "text"
>                                           opened
>                                         "opened"
>                                         can read
>                                            "yes"
>                                        can write
>                                             "no"
>
>
> Perhaps the documentation for download.file should be changed to note the
> requirement of the port.  The paragraph on proxies could be changed from
>
>
>      Proxies can be specified via environment variables. Setting
>      `"no_proxy"' stops any proxy being tried. Otherwise the setting of
>      `"http_proxy"' or `"ftp_proxy"' (or failing that, the all
>      upper-case version) is consulted and if non-empty used as a proxy
>      site.  For FTP transfers, the username and password on the proxy
>      can be specified by `"ftp_proxy_user"' and `"ftp_proxy_password"'.
>
>
> to something like:
>
>      Proxies can be specified via the environment variables `"http_proxy"'
>      or `"HTTP_PROXY"' and `"ftp_proxy'" or `"FTP_PROXY"'.  These variables
>      must be of the form `protocol://machine.domain.tld:port'.  For FTP
>      transfers, the username and password on the proxy can be specified by
>     `"ftp_proxy_user"' and `"ftp_proxy_password"'.  Setting `"no_proxy"'
>      prevents the use of any proxy.
>
>
> -Greg
>
> > -----Original Message-----
> > From: ripley at stats.ox.ac.uk [mailto:ripley at stats.ox.ac.uk]
> > Sent: Tuesday, June 18, 2002 11:43 AM
> > To: Warnes, Gregory R
> > Cc: 'r-help at stat.math.ethz.ch'; 'bioconductor at stat.math.ethz.ch'
> > Subject: Re: [R] Problems with url/download and http_proxy
> >
> >
> > The code (which you do have available to you) says http_proxy
> >
> >  * Should be like http://myproxy/ or http://myproxy:3128/
> >
> > which yours is not, so please try that format.  The code suggests
> > that the traling / can be omitted, but the words do not.
> >
> > --
> > 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 272860 (secr)
> > Oxford OX1 3TG, UK                Fax:  +44 1865 272595
> >
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-- 
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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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