Overview[1]#

URI Schemes is the top level of the Uniform Resource Identifier (URI) naming structure in computer networking.

URI Schemes are in an IANA Registry at Uniform Resource Identifier (URI) Schemes

All URIs and Absolute URI references are formed with a scheme name, followed by a colon character (":"), and the remainder of the URI often called the scheme-specific part.

The syntax and semantics of the scheme-specific part are left largely to the specifications governing individual schemes, subject to certain constraints such as reserved characters and how to "escape" them.

The scheme name consists of a sequence of characters beginning with a letter and followed by any combination of:

  • letters
  • digits
  • plus ("+")
  • period (".")
  • hyphen ("-").
Although URI Schemes are case-insensitive, the canonical form is lowercase and documents that specify URI Schemes must do so with lowercase letters. The scheme name is followed by a colon (":").

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« This page (revision-4) was last changed on 27-Oct-2017 08:48 by jim