WikiPrint - from Polar Technologies

Setting a proxy configuration in R

install.packages("devtools")
library(devtools)

To this aim, the utility set_config of package httr is used (Note that httr is a dependency of package devtools, and hence it is already installed in your system)

require(httr)
set_config(use_proxy(url = "http://url_of_your_proxy.net", port = 9999, username = "user", password = "password"))