R cannot download websockets package from the github - r

Question

The manual is written here:https://github.com/Refinitiv/websocket-api/tree/master/Applications/Examples/R
The mentioned code is written in Section 2 of Install libraries
Problems are with this part
library(devtools)
install_github("brettjbush/R-Websockets")
With R and RTools versions above 4.0 I have following error.
> install_github("brettjbush/R-Websockets")
Downloading GitHub repo brettjbush/R-Websockets#HEAD
Installing 1 packages: caTools
Installing package into ‘\\energia.sise/dfs/REDIRECT/german.suhharukov/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/bin/windows/contrib/4.0/caTools_1.18.0.zip'
Content type 'application/zip' length 317292 bytes (309 KB)
downloaded 309 KB
package ‘caTools’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
C:\Users\german.suhharukov\AppData\Local\Temp\RtmpoRYGc0\downloaded_packages
√ checking for file 'C:\Users\german.suhharukov\AppData\Local\Temp\RtmpoRYGc0\remotes1aa03e212c08\brettjbush-R-Websockets-fc7ee9c/DESCRIPTION' (1s)
- preparing 'websockets':
√ checking DESCRIPTION meta-information ...
- cleaning src
Warning in system2(command, args, stdout = NULL, stderr = NULL, ...) :
'CreateProcess' failed to run 'C:\rtools40\usr\bin\make.exe -f "C:/PROGRA~1/R/R-40~1.3/share/make/clean.mk" -f Makevars.win clean'
- checking for LF line-endings in source and make files and shell scripts
- checking for empty or unneeded directories
- building 'websockets_1.1.7.tar.gz'
Installing package into ‘\\sise/dfs/REDIRECT/MYNAME/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)
'\\sise\dfs\REDIRECT\MYNAME\Documents'
CMD.EXE was started with the above path as the current directory.
UNC paths are not supported. Defaulting to Windows directory.
* installing *source* package 'websockets' ...
** using staged installation
** libs
*** arch - i386
Error in system(cmd) :
(converted from warning) 'CreateProcess' failed to run 'C:\rtools40\usr\bin\make.exe -f "Makevars.win" -f "C:/PROGRA~1/R/R-40~1.3/etc/i386/Makeconf" -f "C:/PROGRA~1/R/R-40~1.3/share/make/winshlib.mk" SHLIB="websockets.dll" OBJECTS="libsock.o"'
* removing '\\sise/dfs/REDIRECT/MYNAME/Documents/R/win-library/4.0/websockets'
Error: Failed to install 'websockets' from GitHub:
(converted from warning) installation of package ‘C:/Users/MYNAME/AppData/Local/Temp/RtmpoRYGc0/file1aa0518554ea/websockets_1.1.7.tar.gz’ had non-zero exit status
> install.packages("caTools")
Installing package into ‘\\sise/dfs/REDIRECT/MYNAME/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/bin/windows/contrib/4.0/caTools_1.18.0.zip'
Content type 'application/zip' length 317292 bytes (309 KB)
downloaded 309 KB
package ‘caTools’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
C:\Users\MYNAME\AppData\Local\Temp\XXXXXXX\downloaded_packages
>
Errors are following
> library(devtools)
Loading required package: usethis
> install_github("brettjbush/R-Websockets")
Downloading GitHub repo brettjbush/R-Websockets#master
trying URL 'https://cran.rstudio.com/bin/windows/Rtools/Rtools35.exe'
Content type 'application/x-msdownload' length 108622512 bytes (103.6 MB)
downloaded 103.6 MB
Error: Failed to install 'websockets' from GitHub:
Could not find tools necessary to compile a package
Call `pkgbuild::check_build_tools(debug = TRUE)` to diagnose the problem.
> pkgbuild::check_build_tools(debug = TRUE)
trying URL 'https://cran.rstudio.com/bin/windows/Rtools/Rtools35.exe'
Content type 'application/x-msdownload' length 108622512 bytes (103.6 MB)
downloaded 103.6 MB
Error: Could not find tools necessary to compile a package
Call `pkgbuild::check_build_tools(debug = TRUE)` to diagnose the problem.
> find_rtools()
[1] TRUE
> Sys.which("ls.exe")
ls.exe
"C:\\Rtools\\bin\\ls.exe"
How can I download this package?

Answer 1

In the notes on github it says "NOTE: This package is no longer maintained. For implementing websocket servers in R, try the httpuv package"
Another possible problem could be that you are running a new version of R with an old version of Rtools. So I'd try to install the newest version of Rtools or run an older version of R with a compatible version of Rtools, such that you can build and compile the package.
I ran your code on my machine running R 4.0.2 and Rtools 4.0.0 and did not face any issues installing the package. So I'd suggest installinng the newest version of R and Rtools from here: https://cran.r-project.org/bin/windows/Rtools/ and trying again.