Setting a southbound (targetRequest) header

[ericschult]

I need to set an http header on the target (southbound) request.

Is there a callback event when the target request is about to occur?

I've been able to add the headers to the request, but this seems a little indirect.

[rmishra]

You can attach an Assign Message Policy on the Target Pre Flow to add an HTTP Header. The policy snippet would appear as follows:

<Add>        
 <Headers>            
   <Header name="static-header">static value</Header>
   <Header name="dynamic-header">{request.user.agent}</Header>       
 </Headers>
</Add>

The Value of the header can be fixed or dynamic (acquired from KVM, original request context) based on your use case.

[ericschult]

Thanks @rmishra, but i was looking for a microgateway solution. I perhaps should have been clearer about that, other than posting this in the microgateway section.

[rmishra]

I am going to pay more attention to tags/labels of a question going forward 🙂

Definitely missed the boat on that one

[Former Community Member · Accepted solution]

The only callbacks are in the documentation here.

To set the target dynamically, you can use the following variables:

req.targetHostname = xx;                
req.targetPort = xx;        
req.targetPath = xx;