From gregory_r_warnes@groton.pfizer.com  Wed Jun 19 15:31:38 2002
From: gregory_r_warnes@groton.pfizer.com (Warnes, Gregory R)
Date: Wed, 19 Jun 2002 10:31:38 -0400
Subject: [R] Problems with url/download and http_proxy
Message-ID: <D7A3CFD7825BD6119B880002A58F06C227E656@groexmb02.pfizer.com>

This does seem to fix my problem:

> Sys.getenv("http_proxy")
                  http_proxy 
"http://gproxy1.pfizer.com/" 


> 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" 

and even

> Sys.getenv("http_proxy")
                 http_proxy 
"http://gproxy1.pfizer.com" 


> 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" 

-Greg


> -----Original Message-----
> From: Prof Brian D Ripley [mailto:ripley@stats.ox.ac.uk]
> Sent: Wednesday, June 19, 2002 4:58 AM
> To: Warnes, Gregory R
> Cc: r-devel@stat.math.ethz.ch
> Subject: RE: [R] Problems with url/download and http_proxy
> 
> 
> It's a bug in the libxml code causing the port to be set to zero.
> Comment lines like
> 
>     /*if (proxyPort != 0) {
> 	proxyPort = 0;
> 	}*/
> 
> in nanohttp.c and nanoftp.c.  (The port has already been set in the
> caller.)
> 
> Please confirm that this works.
> 
> 
> On Tue, 18 Jun 2002 ripley@stats.ox.ac.uk wrote:
> 
> > 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@stats.ox.ac.uk [mailto:ripley@stats.ox.ac.uk]
> > > > Sent: Tuesday, June 18, 2002 11:43 AM
> > > > To: Warnes, Gregory R
> > > > Cc: 'r-help@stat.math.ethz.ch'; 'bioconductor@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@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@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@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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[R] Problems with url/download and http_proxy
Warnes, Gregory R