Understanding QUIC by Examples

QUIC is a UDP based, multiplexed connection protocol, whose first version has been published as RFC9000 in this May. While its main user is HTTP/3, it can be used as a basis of other application protocols. On the other hand, the protocol design is inherently complex due to various configuration properties. In this talk, we will go through each aspect by writing a simple file synchronization application using ngtcp2 and GnuTLS. By the end of this session you will understand the benefits of using QUIC as well as the drawbacks.