[#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#L1478[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

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.2.3[3.2.3. Port (rfc3986)]

Return true if a port is present

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

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.2.3[3.2.3. Port (rfc3986)]



== 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].



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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