> For the complete documentation index, see [llms.txt](https://http3-explained.haxx.se/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://http3-explained.haxx.se/fr/the-protocol/feature-reliable.md).

# Fiable

Bien qu'UDP ne soit pas un transport fiable, QUIC ajoute une couche au-dessus d'UDP qui introduit la fiabilité. Il offre la retransmission de paquets, le contrôle de congestion, la stimulation et les autres fonctionnalités présentes par ailleurs dans TCP.

Les données envoyées sur QUIC depuis un point de terminaison apparaîtront dans l'autre tôt ou tard, tant que la connexion est maintenue.


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