Solved: Assign message Policy Set Header versus Add Header... - Page 2

janapatisiva · 09-08-2018 05:00 AM

Hi,

What is the difference when I use Set Headers and Add Headers with Assign Message Policy. Both the approaches are working for me.

 <Set>
        <Headers>
            <Header name="findme">{request.queryparam.search}</Header>
        </Headers>
    </Set>


<Add>
        <Headers>
            <Header name="findme">{request.queryparam.search}</Header>
        </Headers>
    </Add>

sidd-harth

Hi @Siva Prasad Rao Janapati, If there is no existing value, then Set and Add are equivalent.

If there is an exisiting value, Set will over-write any existing value & Add will append to any existing value.

Moreover the sub-elements of <Set> support the dynamic string substitution feature called message templating.

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Assign message Policy Set Header versus Add Headers