Neither of the wget nor curl commands is widely available: you can check if one is available via Sys. If you use download. The supported method s do change: method libcurl was introduced in R 3. Files of more than 2GB are supported on bit builds of R ; they may be truncated on some bit builds.
Methods "wget" and "curl" are mainly for historical compatibility but provide may provide capabilities not supported by the "libcurl" or "wininet" methods. Windows binaries are available from Cygwin, gnuwin32 and elsewhere. Windows binaries are available at that URL. Usage download. Arguments url a character string or longer vector e. Is a server-side cached value acceptable? Details The function download. A progress bar tracks the transfer platform-specifically: On Windows If the file length is known, the full width of the bar is the known length.
You can either download binaries or source code archives for the latest stable or previous release or access the current development aka nightly distribution through Git. This software may not be exported in violation of any U. The release was packaged with CPack which is included as part of the release. To install a. The OS-machine. Z files are compressed tar files of the install tree. Support for method "libcurl" is optional on Windows: use capabilities "libcurl" to see if it is supported on your build.
There is support for simultaneous downloads, so url and destfile can be character vectors of the same length greater than one but the method has to be specified explicitly and not via "auto". For methods "wget" and "curl" a system call is made to the tool given by method , and the respective program must be installed on your system and be in the search path for executables.
They will block all other activity on the R process until they complete: this may make a GUI unresponsive. It is used by available. The "wininet" method supports some redirections but not all. For method "libcurl" , messages will quote the endpoint of redirections. Most methods do not percent-encode special characters such as spaces in URLs see URLencode , but it seems the "wininet" method does. The remaining details apply to the "internal" , "wininet" and "libcurl" methods only.
The timeout for many parts of the transfer can be set by the option timeout which defaults to 60 seconds. The level of detail provided during transfer can be set by the quiet argument and the internet. I've tried the two most recent patched versions of R 3. It's been throwing this error for at least a week. Furthermore, these same arrangements have been working fine on my other Windows machines. The error message is. Stepping through after declaring debug utils::download. I'm not seeing anything similar amoung the 18 SO hits.
Is this something I should ask SO about instead? The text was updated successfully, but these errors were encountered:. This is coming from utils::download. Unfortunately there is not much we can do about it in remotes, other than maybe trying to a different download method, or try multiple methods. Sorry, something went wrong. Your intuition was right. It appears to be influenced by the 'method' parameter in utils::download. On windows, it is not libcurl by defaut but wininet when auto is set.
Could it come from a different behaviour of wininet between different version of windows? I will try to verify that. One solution could be to check for libcurl availability by default but it was the previous behaviour that did not allowed windows proxy behavior offered by wininet.
Created on by the reprex package v0. See e. Older Windows systems only support TLS v1.
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