Testing 2 way communication

I need to test http Request communication between two serwers. For testing one serwer responses I used Jmeter.
But now I need to test asynchronous communication between two serwers.

Problem is that I need to install the same software like JMETER or SOAP UI on those serwers and simulate http communication between them. And of course later I need to evaluate the tests results.

By the way I am not interesting in Mock Serwice option in SOAP UI becouse i need test that on real instances of serwrs.

Is there any tool to do that?