how to modify request before proxying?
Dear friends, i meet a problem, can anybody help :

I starts two different koa **https** servers, namely Svr1 and  Svr2.

When Svr1 receives a post  request, i need to add some params into the form and then proxy it to Svr2.

how can i accomplish that ?

by the way , cookies also need to be proxied to Svr2
  
  