pekko/akka-docs/rst/java/http/routing-dsl/directives/host-directives/extractHost.rst

.. _-extractHost-java-:

RequestVals.host
================

Extract the hostname part of the ``Host`` request header and expose it as a ``String`` extraction
to its inner route.


Example
-------

.. includecode:: ../../../../code/docs/http/javadsl/server/directives/HostDirectivesExamplesTest.java#extractHostname
=doc #18657 Doc host and path directives * also including docs of RequestVals.matchAndExtractHost and RequestVals.matchAndExtractHost * and add Host.create factory methods * add missing HttpRequest PATCH and OPTIONS * change to val in matchAndExtractHost for fail fast exception 2015-10-07 12:07:26 +02:00			`.. _-extractHost-java-:`

			`RequestVals.host`
			`================`

			Extract the hostname part of the ``Host`` request header and expose it as a ``String`` extraction
			`to its inner route.`


			`Example`
			`-------`

			`.. includecode:: ../../../../code/docs/http/javadsl/server/directives/HostDirectivesExamplesTest.java#extractHostname`