d9c7f9b7f0
* Include Respond Directives Examples for Java. * Include license on RespondWithDirectivesExamplesTest.
21 lines
826 B
ReStructuredText
21 lines
826 B
ReStructuredText
.. _-respondWithDefaultHeader-java-:
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respondWithDefaultHeader
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========================
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Description
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-----------
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Adds a given HTTP header to all responses coming back from its inner route only if a header with the same name doesn't
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exist yet in the response.
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This directive transforms ``HttpResponse`` and ``ChunkedResponseStart`` messages coming back from its inner route by
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potentially adding the given ``HttpHeader`` instance to the headers list.
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The header is only added if there is no header instance with the same name (case insensitively) already present in the
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response.
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See also :ref:`-respondWithDefaultHeaders-java-` if you'd like to add more than one header.
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Example
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-------
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.. includecode:: ../../../../code/docs/http/javadsl/server/directives/RespondWithDirectivesExamplesTest.java#respondWithDefaultHeader
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