R Under development (unstable) (2024-01-07 r85787 ucrt) -- "Unsuffered Consequences"
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> #
> # This is an example of where we read the header and then set the options
> # in the curl handle to read the body ofthe response.
> #
> 
> library(RCurl)
> 
> reader = dynCurlReader()
> status = curlPerform(url = "http://ws.audioscrobbler.com/2.0/?method=library%2Egetartists&user=oso&api_key=de933ba987ea45f82a73acd0d82071c3",
+                      headerfunction = reader$update,
+                      curl = reader$curl())
> 
> try(Encoding(reader$value()))    # UTF-8, sometimes
[1] "UTF-8"
> 
> 
> proc.time()
   user  system elapsed 
   0.20    0.09    0.82