:relfileprefix: ../../
[#765EC2FF23FC4AECDEF7E86FD117D85B165A5826]

= Function parse_authority

pass:v,q[Parse an authority]


== Synopsis

Declared in header `</boost/url/authority_view.hpp#L1432[boost/url/authority_view.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
result<xref:boost/urls/authority_view.adoc[authority_view]>
parse_authority(string_view s) noexcept;
----

== Description

pass:v,q[This function parses a string according to] pass:v,q[the authority grammar below, and returns an]
xref:boost/urls/authority_view.adoc[authority_view]
pass:v,q[referencing the string.]
pass:v,q[Ownership of the string is not transferred;]
pass:v,q[the caller is responsible for ensuring that]
pass:v,q[the lifetime of the string extends until the]
pass:v,q[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
pass:v,q[Throws nothing.]

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.2[3.2. Authority (rfc3986)]



== Return Value

* `result` 


== Parameters

|===
| Name | Type 

| *s*
| `string_view`

|===