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

Return the port

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_view_base.hpp#L1587[boost/url/url_view_base.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
core::string_view
port() const noexcept;
----

== Description

If present, this function returns a string representing the port (which may be empty). Otherwise it returns an empty string.

== Example
[,cpp]
----
assert( url_view( "http://localhost.com:8080" ).port() == "8080" );
----
== Complexity
Constant.

== Exception Safety
Throws nothing.

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

== Return Value

The port as a string.

== See Also

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


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