Re: [Rd] Utilizing the internet module

From: Prof Brian Ripley <>
Date: Thu 23 Feb 2006 - 19:23:43 GMT

On Thu, 23 Feb 2006, Jeffrey Horner wrote:

> Hello all,
> I'd like to utilize the R_Sock* functions from R_ext/R-ftp-http.h in my
> R package. The intent is to use these in conjunction with R_serialize()
> to store R objects in a remote data store. I'm aware that version
> 2.2.1 of "Writing R extensions" explains that these may be undocumented
> and unstable, but I have a couple of questions:
> 1) are they platform independent? I presume they are...

Only in sense that they have a common interface.

> 2) What's the appropriate way to link against them? On Linux x86, I can
> do this with the Makevars:

You can, but that is a module and not a library and so it does not work on MacOS X and may well not work on Windows (you would be lucky prior to R 2.3.0).

I wonder why you need a C interface at all. There is serialize() and socket connections are available at R level. Below that, Rsockopen etc are exported from R itself and underly make.socket etc.

Brian D. Ripley,        
Professor of Applied Statistics,
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Fri Feb 24 07:21:37 2006

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