:relfileprefix: ../../../
[#boost-urls-url-remove_port]

= xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/url.adoc[pass:[url]]::remove_port


Remove the port


== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url.hpp#L460[boost/url/url.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
xref:boost/urls/url.adoc[url]&
remove_port() noexcept;
----

== Description


If a port exists, it is removed. The rest
of the authority is unchanged.

=== Example
[,cpp]
----
assert( url( "http://www.example.com:80" ).remove_port().authority().buffer() == "www.example.com" );
----

=== Postconditions
[,cpp]
----
this->has_port() == false && this->port_number() == 0 && this->port() == ""
----

=== Complexity

Linear in `this-&gt;size()`.

=== 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_base/set_port.adoc[set_port]
.