Using TTCN-3 to Test SPDY Protocol Interaction Property

SPDY protocol is a new application-layer communication protocol which was proposed by Google in order to overcome the defects of HTTP. On the basis of HTTP protocol, SPDY offered four improvements to shorten the page loading time such as multiplexed requests, prioritized requests, server pushed streams and compressed headers. However, there is no much test work of the SPDY especially treating it as a black box, focusing on its interaction property, or testing it by using TTCN-3. In this paper, the interaction property of SPDY protocol is analyzed according to the SPDY protocol draft specification, and a novel test work designed in view of SPDY interaction property is implemented. During the test work, the interaction granularity of the SPDY peers is divided into three kinds of granularity from different levels, meanwhile the test cases were generated in accordance with the draft specification and encoded by utilizing TTCN-3 language for executing on the TT work bench Professional software. Above all we must ensure the SPDY server-side can support the SPDY protocol and the test host installs TT work bench Professional software to complete TTCN-3 testing. Finally, the interaction property of SPDY protocol was tested and the test results were reported. Moreover, some failed test cases were analyzed in detail.