Service Bus is Azure Cloud solution, but it can be installed on your own hardware which must run Windows Server 2012.
Here are the links I think you need:
Installations and configuration instructions: http://msdn. microsoft.com/en-us/library/ dn441394.aspx
To get the software: http://msdn. microsoft.com/en-us/library/ dn441412.aspx
the WebPI folder download folder is %LocalAppData%\Microsoft\Web Platform Installer\installers. You can get the WebPI installation file there.
the service bus connection string can be retrieved by using Get-SBClientConfiguration. Please make sure you import the certificate from the server to your local computer. Make sure use Get-SBAuthorizationRule to get the connection string with shared key.