[R] Class mode text isopen can read can write - too many open connections

[Santosh Srinivas]

I am downloading data files using RCurl and everything works except till
some limit is hit and says too many connections open 
It is a simple download using URL and I am writing the status in a tryCatch
block to a log file.


showConnections()
     description class mode text isopen can read can write
> showConnections(all=T)
  description class      mode text   isopen   can read can write
0 "stdin"     "terminal" "r"  "text" "opened" "yes"    "no"     
1 "stdout"    "terminal" "w"  "text" "opened" "no"     "yes"    
2 "stderr"    "terminal" "w"  "text" "opened" "no"     "yes"    

I tried closeAllConnections() but of no use.

When I try to delete a downloaded file . It says cannot be done because
"folder is open in R GUI front end"

Any idea how to resolve this?

> sessionInfo()
R version 2.11.1 (2010-05-31) 
i386-pc-mingw32 

locale:
[1] LC_COLLATE=English_United Kingdom.1252  LC_CTYPE=English_United
Kingdom.1252    LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C
LC_TIME=English_United Kingdom.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] RCurl_1.4-4.1  bitops_1.0-4.1 zoo_1.6-4     

loaded via a namespace (and not attached):
[1] grid_2.11.1     lattice_0.19-11 tools_2.11.1   
>