Header (computing)

In information technology, header refers to supplemental data placed at the beginning of a block of data being stored or transmitted. In data transmission, the data following the header is sometimes called the payload or body.

It is vital that header composition follows a clear and unambiguous specification or format, to allow for parsing.

Examples


See also

References

  1. P. Resnick, ed. (October 2008). Internet Message Format. Network Working Group. doi:10.17487/RFC5322. RFC 5322. Draft Standard. Obsoletes RFC 2822. Updates RFC 4021. Updated by RFC 6854.
  2. B. Leiba (March 2013). Update to Internet Message Format to Allow Group Syntax in the "From:" and "Sender:" Header Fields. Internet Engineering Task Force. doi:10.17487/RFC6854. ISSN 2070-1721. RFC 6854. Proposed Standard. Updates RFC 5322.
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