R-devel r69197 returns appropriate errors for the cases below; I know of a few
rough edges
- ftp error codes are not reported correctly
- download.file creates destfile before discovering that http fails, leaving an
empty file on disk
and am happy to hear of more.
Martin
On 08/27/2015 08:46 AM, Jeroen Ooms wrote:
On Thu, Aug 27, 2015 at 5:16 PM, Martin Maechler
<maech...@stat.math.ethz.ch> wrote:
Probably I'm confused now...
Both R-patched and R-devel give an error (after a *long* wait!)
for
download.file("https://someserver.com/mydata.csv";, "mydata.csv")
So that problem is I think solved now.
I'm sorry for the confusion, this was a hypothetical example.
Connection failures are different from http status errors. Below some
real examples of servers returning http errors. For each example the
"internal" method correctly raises an R error, whereas the "libcurl"
method does not.
# File not found (404)
download.file("http://httpbin.org/data.csv";, "data.csv", method = "internal")
download.file("http://httpbin.org/data.csv";, "data.csv", method = "libcurl")
readLines(url("http://httpbin.org/data.csv";, method = "internal"))
readLines(url("http://httpbin.org/data.csv";, method = "libcurl"))
# Unauthorized (401)
download.file("https://httpbin.org/basic-auth/user/passwd";,
"data.csv", method = "internal")
download.file("https://httpbin.org/basic-auth/user/passwd";,
"data.csv", method = "libcurl")
readLines(url("https://httpbin.org/basic-auth/user/passwd";, method =
"internal"))
readLines(url("https://httpbin.org/basic-auth/user/passwd";, method = "libcurl"))
--
Computational Biology / Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N.
PO Box 19024 Seattle, WA 98109
Location: Arnold Building M1 B861
Phone: (206) 667-2793
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
