[#boost-urls-url_base-set_port_number]
= xref:boost/urls/url_base/set_port_number.adoc[boost::urls::url_base::set_port_number]
:relfileprefix: ../../../
:mrdocs:

Set the port

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_base.hpp#L1556[boost/url/url_base.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/url_base.adoc[url_base]&
set_port_number(std::uint16_t n);
----

== Description

The port is set to the specified integer.

== Example
[,cpp]
----
assert( url( "http://www.example.com" ).set_port_number( 8080 ).authority().buffer() == "www.example.com:8080" );
----
== Postconditions
[,cpp]
----
this->has_authority() == true && this->has_port() == true && this->port_number() == n
----
== Complexity
Linear in `this‐>size()`.

== Exception Safety
Strong guarantee. Calls to allocate may throw.

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

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

== Return Value

`*this`

== Parameters

[cols=2]
|===
| Name
| Description
| *n*
| The port number to set.
|===

== See Also

xref:boost/urls/url_base/remove_port.adoc[`remove_port`], xref:boost/urls/url_base/set_port.adoc[`set_port`].


[.small]#Created with https://www.mrdocs.com[MrDocs]#