policy to override backend service ost value

Question

How to override the backend service host value in apim policy ?

Host ( the header name ) -- it should override the backend service host value

is the below condition policy sufficient enough to do the above operation ?
<choose>
<when condition="@(context.Request.Url.Query.GetValueOrDefault("version") == "2013-05")">
<set-backend-service base-url="http://contoso.com/api/8.2/" />
</when>
</choose>

@MuthuKumaranMurugaachari-MSFT

Answer 1

For overriding the Host value you would typically override the host header. This documentation describes how you can use <set-header> to override the host header value.

for example:

   <set-header name="Host" exists-action="override">  
       <value>contoso.com</value>  
   </set-header>