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

Return true if a port is present

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_view_base.hpp#L1551[boost/url/url_view_base.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
has_port() const noexcept;
----

== Description

This function returns true if an authority is present and contains a port.

== Example
[,cpp]
----
assert( url_view( "wss://www.example.com:443" ).has_port() );
----
== Complexity
Constant.

== Exception Safety
Throws nothing.

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

port        = *DIGIT
----
== Specification
* https://datatracker.ietf.org/doc/html/rfc3986#section-3.2.3[]

== Return Value

`true` if a port is present, `false` otherwise.

== See Also

xref:boost/urls/url_view_base/encoded_host_and_port.adoc[`encoded_host_and_port`], xref:boost/urls/url_view_base/port.adoc[`port`], xref:boost/urls/url_view_base/port_number.adoc[`port_number`].


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