I am getting the below error while trying to install cloud foundry plugin to STS.

Below are the steps I followed
Selected

Help > Dashboard.

The Dashboard opens.


Click the Extensions tab.

STS loads a list of extensions.


Scroll down to the Server and Clouds category and select Cloud Foundry Integration

Clicked on Install button and I am ending up witht the below error


Problems occurred while performing installation: Communication with repository at http://dist.springsource.com/release/TOOLS/cloudfoundry failed.
Communication with repository at http://dist.springsource.com/release/TOOLS/cloudfoundry failed.
Read timed out


Please suggest me a solution.