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Využití protokolu QUIC pro přenos souborů
Hubený, Michal
This thesis deals with the usability of the QUIC protocol for file transfer. The aim of the thesis was to deploy existing implementations of application services (SMB, HTTPS), that are also able to use QUIC as a transport protocol. Subsequently, in the implemented topology, test how fast and durable protocols based on the TCP and QUIC are in an environment, where different kinds~of~negative network effects (delays, packet loss, ...) will be simulated. The results were achieved using dozens of measurements for each individual of scenarios. As the results indicate, file transfer on QUIC protocol is not yet as~efficient~as its existing TCP-based variants. At the conclusion of the work, the individual recommendations of the author are presented for which situations it is appropriate to choose a specific solution, so that the best results for the user are achieved.
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Porovnanie výkonnosti implementácií webových serverov podporujúcich HTTP/3
Rumančíková, Simona
The bachelor thesis contains a comparison of implementations of selected web servers supporting HTTP/3 protocol. In the introductory chapters, the chosen technology is introduced and certain web servers that support the HTTP/3 protocol are presented. Then the actual implementation of the three web servers (Caddy, Nginx, OpenLiteSpeed) supporting HTTP/3 is described. The purpose of the thesis culminates in the final chapter, where the results of the static web page retrieval are compared. Testing is simulated with selected negative events not only using the Firefox web browser, but also using the Linux traffic control software. These results are represented graphically and conclusions are drawn from them. Of the six simulations, OpenLiteSpeed had on average the shortest load time for the entire web content in up to three cases. A this was in the unbounded, Regular 4G/LTE and Good 3G situations. Caddy had the shortest average load time for web content with limited bandwidth and at 200 ms delay. For packet loss, Nginx had the shortest average load time for all web content.
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