title: nginx reverse proxy add request cookie
body: <p>I have to use reverse proxy for a project. I need to add request cookie in nginx.</p>
  <p>The case like:</p>
  <p>request comes with header. other servis want to this variable in cookie. I tried many way for resolve this problem. I did not manage to.</p>
  <p>Anyone can help me ?
  Thanks</p>