scheme_id

Return the scheme

Synopsis

scheme scheme_id() noexcept;

Declared in file <src/url_view_base.cpp> at line 134

Description

This function returns a value which depends on the scheme in the url:

  • If the scheme is a well-known scheme, corresponding value from the enumeration urls::scheme is returned.
  • If a scheme is present but is not a well-known scheme, the value returned is urls::scheme::unknown.
  • Otherwise, if the scheme is absent the value returned is urls::scheme::none.

    • Example

    assert( url_view( "wss://www.example.com/crypto.cgi" ).scheme_id() == scheme::wss );

    Complexity

    Constant.

    Exception Safety

    Throws nothing.

    BNF

    URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ] absolute-URI = scheme ":" hier-part [ "?" query ] scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )

    Specification

  • 3.1. Scheme (rfc3986)