[Rd] download.file() on ftp URL fails in windows with default download method

[Uwe Ligges]

On 08.08.2015 01:11, Dan Tenenbaum wrote:
> Hi,
>
>> url <- "ftp://ftp.ncbi.nlm.nih.gov/genomes/ASSEMBLY_REPORTS/All/GCF_000001405.13.assembly.txt"
>> download.file(url, tempfile())
> trying URL 'ftp://ftp.ncbi.nlm.nih.gov/genomes/ASSEMBLY_REPORTS/All/GCF_000001405.13.assembly.txt'
> Error in download.file(url, tempfile()) :
>    cannot open URL 'ftp://ftp.ncbi.nlm.nih.gov/genomes/ASSEMBLY_REPORTS/All/GCF_000001405.13.assembly.txt'
> In addition: Warning message:
> In download.file(url, tempfile()) : InternetOpenUrl failed: ''
>
> If I set method="curl" it works fine. This was on R-3.2.2-beta (sessionInfo() below) but I got the same results in R-3.2.1 and R-devel.
>
> This does not happen on Windows Server 2008 but it happens on Windows Server 2012.


Thanks for letting us know. The kot recent machine I checked with is 
Windows Server 2008 R2 and I have not got problems on those. Can someone 
else rerpoduce this on Windows Server 2012?

Best,
Uwe Ligges

>
> Dan
>
>> sessionInfo()
> R version 3.2.2 beta (2015-08-05 r68859)
> Platform: x86_64-w64-mingw32/x64 (64-bit)
> Running under: Windows Server 2012 x64 (build 9200)
>
> locale:
> [1] LC_COLLATE=English_United States.1252
> [2] LC_CTYPE=English_United States.1252
> [3] LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C
> [5] LC_TIME=English_United States.1252
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
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