##  References  [  [ edit
](/w/index.php?title=List_of_HTTP_header_fields&action=edit&section=14 "Edit
section: References") ]

  1. ** ^  ** [ "Field Parsing" ](https://datatracker.ietf.org/doc/html/rfc7230#section-3.2.4) . [ _Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing_ ](https://datatracker.ietf.org/doc/html/rfc7230) . June 2014. sec. 3.2.4. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") :  [ 10.17487/RFC7230 ](https://doi.org/10.17487%2FRFC7230) . [ RFC ](/wiki/Request_for_Comments "Request for Comments") [ 7230 ](https://datatracker.ietf.org/doc/html/rfc7230) . 
  2. ** ^  ** [ _HTTP/2_ ](https://datatracker.ietf.org/doc/html/rfc9113) . June 2022. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") :  [ 10.17487/RFC9113 ](https://doi.org/10.17487%2FRFC9113) . [ RFC ](/wiki/Request_for_Comments "Request for Comments") [ 9113 ](https://datatracker.ietf.org/doc/html/rfc9113) . 
  3. ** ^  ** Peon, R.; Ruellan, H. (May 2015). [ "HPACK: Header Compression for HTTP/2" ](https://tools.ietf.org/html/rfc7541) . [ IETF ](/wiki/IETF "IETF") . [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") : [ 10.17487/RFC7541 ](https://doi.org/10.17487%2FRFC7541) . Retrieved  December 13,  2021  .  ` {{ [ cite journal ](/wiki/Template:Cite_journal "Template:Cite journal") }} ` :  Cite journal requires ` |journal= ` ( [ help ](/wiki/Help:CS1_errors#missing_periodical "Help:CS1 errors") ) 
  4. ** ^  ** [ "Field Names" ](https://datatracker.ietf.org/doc/html/rfc9110#section-5.1) . [ _HTTP Semantics_ ](https://datatracker.ietf.org/doc/html/rfc9110) . June 2022. sec. 5.1. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") :  [ 10.17487/RFC9110 ](https://doi.org/10.17487%2FRFC9110) . [ RFC ](/wiki/Request_for_Comments "Request for Comments") [ 9110 ](https://datatracker.ietf.org/doc/html/rfc9110) . 
  5. ** ^  ** [ "Methods: Overview" ](https://datatracker.ietf.org/doc/html/rfc9110#section-9.1) . [ _HTTP Semantics_ ](https://datatracker.ietf.org/doc/html/rfc9110) . June 2022. sec. 9.1. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") :  [ 10.17487/RFC9110 ](https://doi.org/10.17487%2FRFC9110) . [ RFC ](/wiki/Request_for_Comments "Request for Comments") [ 9110 ](https://datatracker.ietf.org/doc/html/rfc9110) . 
  6. ** ^  ** Internet Engineering Task Force (June 1, 2012). [ "RFC 6648" ](http://tools.ietf.org/html/rfc6648) . [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") : [ 10.17487/RFC6648 ](https://doi.org/10.17487%2FRFC6648) . Retrieved  November 12,  2012  .  ` {{ [ cite journal ](/wiki/Template:Cite_journal "Template:Cite journal") }} ` :  Cite journal requires ` |journal= ` ( [ help ](/wiki/Help:CS1_errors#missing_periodical "Help:CS1 errors") ) 
  7. ** ^  ** [ "Message Headers" ](https://www.iana.org/assignments/message-headers/message-headers.xml) . Iana.org. June 11, 2014  . Retrieved  June 12,  2014  . 
  8. ** ^  ** [ "Comments" ](https://datatracker.ietf.org/doc/html/rfc9110#section-5.6.5) . [ _HTTP Semantics_ ](https://datatracker.ietf.org/doc/html/rfc9110) . June 2022. sec. 5.6.5. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") :  [ 10.17487/RFC9110 ](https://doi.org/10.17487%2FRFC9110) . [ RFC ](/wiki/Request_for_Comments "Request for Comments") [ 9110 ](https://datatracker.ietf.org/doc/html/rfc9110) . 
  9. ** ^  ** [ "Quality Values" ](https://datatracker.ietf.org/doc/html/rfc9110#section-12.4.2) . [ _HTTP Semantics_ ](https://datatracker.ietf.org/doc/html/rfc9110) . June 2022. sec. 12.4.2. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") :  [ 10.17487/RFC9110 ](https://doi.org/10.17487%2FRFC9110) . [ RFC ](/wiki/Request_for_Comments "Request for Comments") [ 9110 ](https://datatracker.ietf.org/doc/html/rfc9110) . 
  10. ** ^  ** [ "core - Apache HTTP Server" ](https://web.archive.org/web/20120509104709/https://httpd.apache.org/docs/2.3/mod/core.html#limitrequestfieldsize) . Httpd.apache.org. Archived from [ the original ](http://httpd.apache.org/docs/2.3/mod/core.h