6. References (参考文献)

6.1. Normative References (规范性参考文献)

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, <https://www.rfc-editor.org/info/rfc2119>
[RFC3514] Bellovin, S., "The Security Flag in the IPv4 Header", RFC 3514, DOI 10.17487/RFC3514, April 2003, <https://www.rfc-editor.org/info/rfc3514>
[RFC6093] Gont, F. and A. Yourtchenko, "On the Implementation of the TCP Urgent Mechanism", RFC 6093, DOI 10.17487/RFC6093, January 2011, <https://www.rfc-editor.org/info/rfc6093>
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017, <https://www.rfc-editor.org/info/rfc8174>
[RFC9293] Eddy, W., Ed., "Transmission Control Protocol (TCP)", STD 7, RFC 9293, DOI 10.17487/RFC9293, August 2022, <https://www.rfc-editor.org/info/rfc9293>

[CBR-FLAG] Stalberg, A., "10 Death Flags That Mean An Anime Character is Probably Going To Die", 2023, <https://www.cbr.com/anime-death-hints-signs/>
[NOVEL] Wikipedia, "Light novel", February 2023, <https://en.wikipedia.org/w/index.php?title=Light_novel&oldid=1136814877>
[RFC9110] Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke, Ed., "HTTP Semantics", STD 97, RFC 9110, DOI 10.17487/RFC9110, June 2022, <https://www.rfc-editor.org/info/rfc9110>
[WIKI-FNS] Wikipedia, "List of Fist of the North Star characters", March 2023, <https://en.wikipedia.org/w/index.php?title=List_of_Fist_of_the_North_Star_characters&oldid=1145633265>

规范性参考文献是实现本规范所必需的文档。这些文档定义了 DTH 标志运行所需的关键协议元素和关键词解释。

信息性参考文献提供了有关 DTH 标志概念来源和相关背景的额外信息。这些参考文献有助于理解"死亡标志"概念的文化背景,但不是实现本规范所必需的。