Kaj prinaša transportni protokol QUIC?

slovenian

2024

volume 91, issue 5

delay   ossification   transport mechanisms

Elektrotehniška zveza Slovenije
(Obvezni izvod spletne publikacije)

For a secure transfer of the web content, we generally use a combination of the HyperText Transfer Protocol (HTTP) for communication with a web server, Transport Layer Security (TLS) for the encryption of the content and Transmission Control Protocol (TCP) for a reliable transfer. Using a combination of the protocols results in a poorer performance than using a single protocol, as each protocol has its own overhead, which is mainly reflected in an increased latency of the transfer. Moreover, the development of the World Wide Web and other Internet applications has created a need for more efficient transport mechanisms, which are difficult to implement in practice due to the ossification of the transport layer. Improvements to transport mechanisms have therefore been implemented as part of application protocols, in particular HTTP. The Quick UDP Internet Connections (QUIC) protocol combines the transport mechanisms implemented in HTTP, TLS and TCP under one roof and thus improves the efficiency of the web content transfer. QUIC is not a completely independent transport protocol, as it uses the User Datagram Protocol (UDP) to transport its messages and thus ensures that it is not rejected by the network devices. The main advantages of QUIC over the combination of the TCP, TLS and HTTP protocols are the faster connection establishment, the solution to the head-of-line blocking problem and its implementation in the user space of operating systems, which enables faster upgrades.

20.12.2024