Exchange of callback information

In one embodiment, a method is provided for exchanging callback information. In this method, a first request-response based protocol request is transmitted to a computing device, and a first request-response based protocol response is received from the computing device. Here, the first request-response based protocol response is identified to encapsulate a callback request and this callback request is extracted from the first request-response based protocol response. The callback request is then processed to generate a callback response, and the callback response is encapsulated in a second request-response based protocol request. The second request-response based protocol request is transmitted to the computing device, and a second request-response based protocol response is received after the transmission of the second request-response based protocol request from the computing device. Here, the second request-response based protocol response is a response to the first request-response based protocol request.