[#boost-urls-parse_authority]
= xref:boost/urls/parse_authority.adoc[boost::urls::parse_authority]
:relfileprefix: ../../
:mrdocs:

Parse an authority

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/authority_view.hpp#L1541[boost/url/authority_view.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
system::result<authority_view>
parse_authority(core::string_view s) noexcept;
----

== Description

This function parses a string according to the authority grammar below, and returns an xref:boost/urls/authority_view.adoc[`authority_view`] referencing the string. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the string extends until the view is no longer being accessed.

== BNF
[,cpp]
----
authority     = [ userinfo "@" ] host [ ":" port ]

userinfo      = user [ ":" [ password ] ]

user          = *( unreserved / pct-encoded / sub-delims )
password      = *( unreserved / pct-encoded / sub-delims / ":" )

host          = IP-literal / IPv4address / reg-name

port          = *DIGIT
----
== Exception Safety
Throws nothing.

== Specification
* https://datatracker.ietf.org/doc/html/rfc3986#section-3.2[]

== Return Value

A view to the parsed authority

== Parameters

[cols=2]
|===
| Name
| Description
| *s*
| The string to parse
|===

== See Also

xref:boost/urls/authority_view.adoc[`authority_view`].


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