Performance evaluation of the HTTP/3 client implementations

This paper proposes an experiment to compare the performance of HTTP/3 client implementations based on the ngtcp2 (nghttp3) and quiche libraries with the widely used stable HTTP/2 client implementation using cURL. This study analyses and compares times required to prepare and transfer data from public sites (extracted from HTTP Archive) within different client implementations. The experiment provides insights into the advantages and disadvantages of each implementation in terms of transfer time and reliability and has implications for future research and practical applications. The results of the experiment are expected to be unaffected by cache mechanisms due to the nature of the tools used. Additionally, the study provides a brief overview of the current adaptation of the HTTP/3 protocol.