I received my Master's degree in Computer Science from University of California, San Diego and my Bachelor’s degree in Information Engineering from Southeast University. During my master studies, I was a graduate student researcher at CAIDA advised by Dr. Ricky Mok and Prof. kc claffy. In CAIDA, my work was mainly focused on studying web-based speedtest tools and their applications in the cloud. After my master studies, I also spent some time working with Prof. Laurent Vanbever at ETH Zürich on network verification.
Rui Yang, Ricky K. P. Mok, Shuohan Wu, Xiapu Luo, Hongyu Zou, Weichao Li
PAM 2022. Online (March 2022).
Web-based speed tests are popular among end-users for measuring their network performance. Thousands of measurement servers have been deployed in diverse geographical and network locations to serve users worldwide. However, most speed tests have opaque methodologies, which makes it difficult for researchers to interpret their highly aggregated test results, let alone leverage them for various studies. In this paper, we propose WebTestKit, a unified and configurable framework for facilitating automatic test execution and cross-layer analysis of test results for five major web-based speed test platforms. Only capturing packet headers of traffic traces, WebTestKit performs in-depth analysis by carefully extracting HTTP and timing information from test runs. Our testbed experiments showed WebTestKit is lightweight and accurate in interpreting encrypted measurement traffic. We applied WebTestKit to compare the use of HTTP requests across speed tests and investigate the root causes for impeding the accuracy of latency measurements, which play an important role in test server selection and throughput estimation.
Ricky K. P. Mok, Hongyu Zou, Rui Yang, Tom Koch, Ethan Katz-Bassett, KC Claffy
ACM IMC 2021. Online (November 2021).