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= cowboy_req:host(3)
== Name
cowboy_req:host - URI host name
== Description
[source,erlang]
----
host(Req :: cowboy_req:req()) -> Host :: binary()
----
Return the host name of the effective request URI.
The host name can also be obtained using pattern matching:
[source,erlang]
----
#{host := Host} = Req.
----
== Arguments
Req::
The Req object.
== Return value
The host name is returned as a lowercase binary string.
It is case insensitive.
== Changelog
* *2.0*: Only the host name is returned, it is no longer wrapped in a tuple.
* *1.0*: Function introduced.
== Examples
.Get the effective request URI's host name
[source,erlang]
----
Host = cowboy_req:host(Req).
----
== See also
link:man:cowboy_req(3)[cowboy_req(3)],
link:man:cowboy_req:binding(3)[cowboy_req:binding(3)],
link:man:cowboy_req:bindings(3)[cowboy_req:bindings(3)],
link:man:cowboy_req:host_info(3)[cowboy_req:host_info(3)]
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