Run gem install behind a firewall in Windows
Posted by Marcus Wyatt on 18 March 2008
I’m contracting at a client running a Novell network and wanted to create some small little ruby scripts to automate some tasks for me. But I ran into problems using gem install behind their firewall. I’m getting the following error:
ERROR: While executing gem … (Gem::RemoteSourceException) HTTP Response 407
Here is the steps I followed to get gem install working on my windows xp machine in painstaking detail: 🙂
Firstly we need to set the HTTP_PROXY environment variable. I’ve played around with different options, using uid and pwd and other suggestions, but all I needed was the following:
- On the desktop right click the ‘My Computer’ icon and select properties.
- Now you can either add the HTTP_PROXY variable to the ‘User’ or the ‘System’ variables by clicking the ‘New’ button.
- Within the new system variable dialog, specify ’HTTP_PROXY’ as the variable name and in the value area a url in the following format – http://%5Bproxy_ip%5D:%5Bproxy_port%5D – i.e. http://127.168.1.3:5865
Next we install the Ruby Win32 SSPI which gives ruby the ability to authenticate with ISA natively. We need this library because as far as I understand, it patches the Open-uri library because of some incompatibilities with windows. Anyways, follow the following steps to get it working:
- Download rubysspi from the Ruby Win32 SSPI project page(also available as gem install rubysspi but that doesn’t help much, does it?)
- Install the gem locally using the following command: gem install [local_path_to_gem]\rubysspi-1.2.3.gem i.e. C:\gems\rubysspi-1.2.3.gem
- Now copy the spa.rb file from the gem install directory and paste it in the site-ruby directory. i.e. If ruby is installed in C:\ruby, then the paths should be:
- origin path – C:\ruby\lib\ruby\gems\1.8\gems\rubysspi-1.2.3\spa.rb
- destination path – C:\ruby\lib\ruby\site_ruby\spa.rb
- Find gem.bat in your ruby bin directory (C:\ruby\bin) and replace the last line (i.e. "%~d0%~p0ruby" -x "%~f0" %*) with the following line – @"ruby" -rspa "c:\ruby\bin\gem" %1 %2 %3 %4 %5 %6 %7 %8 %9
- Test you can access the remote ruby gems by executing the following command: gem list rails -r
- You should see similar output as shown above.
Now we can work again without any issues when trying to install or update gems.