This is an interesting use-case. In short, it is not possible with the standard apiman workflow, but is still achievable (although the granularity may not be satisfactory). This is because failures and errors return immediately - which has always been the desired behaviour up until now. 

I don't know what the specifics of your usage are, but, broadly:

Options:

1. Modify your Undertow subsystem config to add the header to all responses (in standalone.xml).  

See: https://access.redhat.com/documentation/en/red-hat-jboss-enterprise-application-platform/7.0/paged/configuration-guide/chapter-17-configuring-the-web-server-undertow

Example:

   <filters>

<response-header name="server-header" header-name="Server" header-value="WildFly/10/apiman"/>

   </filters>

2. Provide your own implementations of IPolicyFailureWriter and/or IPolicyErrorWriter.

In your apiman config:

apiman-gateway.writers.policy-failure=<your impl>

apiman-gateway.writers.error=<your impl>

It may be that you only want to do one, or both.

On 12 January 2017 at 09:25, <Ram.Tanna@ril.com> wrote:

Hi Guys,

 

I have added Simple Header Policy and Rate Limiting Policy on my API.

 

I want my custom response header(defined in simple header policy) in all the responses.

 

I am getting custom header when the response is 200. But as my Rate limit exceeds I receive 429 status code and custom response doesn´t appear.

 

I want Custom Response Header in all the scenarios (whether its 200 or 429).

 

Can you please help me in achieving it ?

 

Thanks and Regards,

Ram Tanna

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