Proxy setting for R

问题:

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 

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 ~\n\n~ error.

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

回答1:

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.

回答2:

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 

Remember to escape any backslashes in your password. You may also need to wrap the URL in a call to curlEscape.

回答3:

For RStudio just you have to do this:

Firstly, open RStudio like always, select from the top menu:

Tools-Global Options-Packages

Uncheck the option: Use Internet Explorer library/proxy for HTTP

And then close the Rstudio, furthermore you have to:

1. Find the file (.Renviron) in your computer, most probably you would find it here: C:\Users\your user name\Documents. Note that if it does not exist you can creat it just by writing this command in RStudio:

   file.edit('~/.Renviron')

2. Add these two lines to the initials of the file:

   options(internet.info = 0)  http_proxy="http://user_id:password@your_proxy:your_port"

And that's it..??!!!

回答4:

I had the same problem at my office and I solved it adding the proxy in the destination of the R shortcut; clik on right button of the R icon, preferences, and in the destination field add

"C:\Program Files\R\your_R_version\bin\Rgui.exe" http_proxy=http://user_id:passwod@your_proxy:your_port/

Be sure to put the directory where you have the R program installed. That works for me. Hope this help.

回答5:

On Windows 7 I solved this by going into my environment settings (try this link for how) and adding user variables http_proxy and https_proxy with my proxy details.

回答6:

This post pertains to R proxy issues on *nix. You should know that R has many libraries/methods to fetch data over internet.

For 'curl', 'libcurl', 'wget' etc, just do the following:

1. Open a terminal. Type the following command:

   sudo gedit /etc/R/Renviron.site

2. Enter the following lines:

   http_proxy='http://username:password@abc.com:port/' https_proxy='https://username:password@xyz.com:port/'

   Replace username, password, abc.com, xyz.com and port with these settings specific to your network.

3. Quit R and launch again.

This should solve your problem with 'libcurl' and 'curl' method. However, I have not tried it with 'httr'. One way to do that with 'httr' only for that session is as follows:

library(httr) set_config(use_proxy(url="abc.com",port=8080, username="username", password="password"))

You need to substitute settings specific to your n/w in relevant fields.

回答7:

If you start R from a desktop icon, you can add the --internet flag to the target line (right click -> Properties) e.g.

"C:\Program Files\R\R-2.8.1\bin\Rgui.exe" --internet2 

回答8:

Inspired by all the responses related on the internet, finally I've found the solution to correctly configure the Proxy for R and Rstudio. There are several steps to follow, perhaps some of the steps are useless, but the combination works!

1. Add environment variables http_proxy and https_proxy with proxy details.

   variable name: http_proxy variable value: https://user_id:password@your_proxy:your_port/

   variable name: https_proxy variable value: https:// user_id:password@your_proxy:your_port

2. If you start R from a desktop icon, you can add the --internet flag to the target line (right click -> Properties)

   e.g."C:\Program Files\R\R-2.8.1\bin\Rgui.exe" --internet2

3. For RStudio just you have to do this:

   Firstly, open RStudio like always, select from the top menu:

   Tools-Global Options-Packages

   Uncheck the option: Use Internet Explorer library/proxy for HTTP

4. Find the file (.Renviron) in your computer, most probably you would find it here: C:\Users\your user name\Documents. Note that: if it does not exist you can creat it just by writing this command in R:

   file.edit('~/.Renviron')

   Then add these six lines to the initials of the file:

   options(internet.info = 0)

   http_proxy = https:// user_id:password@your_proxy:your_port

   http_proxy_user = user_id:password

   https_proxy = https:// user_id:password0@your_proxy:your_port

   https_proxy_user = user_id:password

   ftp_proxy = user_id:password@your_proxy:your_port

5. Restart R. Type the following commands in R to assure that the configuration above works well:

   Sys.getenv("http_proxy")

   Sys.getenv("http_proxy_user")

   Sys.getenv("https_proxy")

   Sys.getenv("https_proxy_user")

   Sys.getenv("ftp_proxy")

6. Now you can install the packages as you want by using the command like:

   install.packages("mlr",method="libcurl")

   It's important to add 'method="libcurl"', otherwise it won't work.

回答9:

Simplest way to get everything working in RStudio under Windows 10:

Open up Internet Explorer, select Internet Options:

---

Open editor for Environment variables:

---

Add a variable HTTP_PROXY in form:

HTTP_PROXY=http://username:password@localhost:port/

Example:

HTTP_PROXY=http://John:JohnPassword@localhost:8080/    

---

RStudio should work:

回答10:

Tried all of these and also the solutions using netsh, winhttp etc. Geek On Acid's answer helped me download packages from the server but none of these solutions worked for using the package I wanted to run (twitteR package).

The best solution is to use a software that let's you configure system-wide proxy.

FreeCap (free) and Proxifier (trial) worked perfectly for me at my company.

Please note that you need to remove proxy settings from your browser and any other apps that you have configured to use proxy as these tools provide system-wide proxy for all network traffic from your computer.

回答11:

My solution on a Windows 7 (32bit). R version 3.0.2

Sys.setenv(http_proxy="http://proxy._add_your_proxy_here_:8080")

setInternt2

updateR(2)

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