:relfileprefix: ../../../
[#CB0F2010ED836AB948B7BE8F0907F6C9C86AF3A3]

= Function url::normalize_scheme

pass:v,q[Normalize the URL scheme]


== Synopsis

Declared in header `</boost/url/url.hpp#L493[boost/url/url.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
xref:boost/urls/url.adoc[url]&
normalize_scheme();
----

== Description

pass:v,q[Applies Syntax-based normalization to the] pass:v,q[URL scheme.]
pass:v,q[The scheme is normalized to lowercase.]

=== Exception Safety
pass:v,q[Strong guarantee.]
pass:v,q[Calls to allocate may throw.]

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-6.2.2[6.2.2 Syntax-Based Normalization (rfc3986)]



== Return Value

* ``