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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>\n<TITLE>Access Denied</TITLE>\n</HEAD>~ error.
How to set LAN proxy settings for XML package in R?
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proxy: Distance and Similarity Measures Provides an extensible framework for the efficient calculation of auto- and cross-proximities, along with implementations of the most popular ones. Version: 0.4-27. Depends: R (≥ 3.4.0)
A proxy server is a computer system or router that functions as a relay between client and server. It helps prevent an attacker from invading a private network and is one of several tools used to build a firewall. The word proxy means "to act on behalf of another," and a proxy server acts on behalf of the user.
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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The problem is with your curl options – the RCurl package doesn't seem to use internet2.dll. You need to specify the port separately, and will probably need to give your user login details as network credentials, e.g.,
opts <- list( proxy = "999.999.999.999", proxyusername = "mydomain\\myusername", proxypassword = "mypassword", proxyport = 8080 ) getURL("http://stackoverflow.com", .opts = opts) Remember to escape any backslashes in your password. You may also need to wrap the URL in a call to curlEscape.
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