Proxy setting for R

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Proxy setting for R

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

Proxy setting for R

I am facing problem while conecting R with internet in my office. May be this due to LAN settings. I tried the almost all possible ways I come across in the web (see below) but still in vain.

Method1: Invoking R using --internet2
Method2: Invoking R by setting ~/Rgui.exe http_proxy=http:/999.99.99.99:8080/ http_proxy_user=ask
Method3: Setting Setinternet2=TRUE

Method4:

curl <- getCurlHandle()
curlSetOpt(.opts = list(proxy = '999.99.99.99:8080'), curl = curl)
Res <- getURL('http://www.cricinfo.com', curl = curl)

In above all methods I can able to load packages directly from CRAN also able to download files using download.file command

But using getURL(RCurl), readHTMLTable(XML), htmlTreeParse(XML) commands I am unable to extract web data. I am getting ~<HEAD> <TITLE>Access Denied</TITLE> </HEAD>~ error.

How to set LAN proxy settings for XML package in R?

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1 Answer

深蓝 · Answer 1 · 2021-10-16T22:11:51+0000

On Mac OS, I found the best solution here. Quoting the author, two simple steps are:

1) Open Terminal and do the following:

export http_proxy=http://staff-proxy.ul.ie:8080
export HTTP_PROXY=http://staff-proxy.ul.ie:8080

2) Run R and do the following:

Sys.setenv(http_proxy="http://staff-proxy.ul.ie:8080")

double-check this with:

Sys.getenv("http_proxy")

I am behind university proxy, and this solution worked perfectly. The major issue is to export the items in Terminal before running R, both in upper- and lower-case.

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Proxy setting for R

Proxy setting for R

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