> 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/ko/the-protocol/feature-reliable.md).

# 신뢰성

UDP가 데이터 전송의 신뢰성을 보장하지 않지만, QUIC은 UDP 위에 새로운 계층을 추가함으로써 신뢰성을 제공한다. 추가된 계층은 TCP에 존재하는 패킷 재전송, 혼잡 제어, 속도 조정 및 다른 기능들을 제공한다.

한 엔드포인트로부터 QUIC을 통해 전송된 데이터는 연결이 유지되는 한 다른 엔드포인트에서 수신할 수 있다.


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