HapiJS Intercept Request, Proxy API Call, Assign Session, Continue Original Request

TL;DR

How do I intercept a request, ping a different route for an ID, store the ID in a session, then continue the original request (especially PUT/POST with payloads) using the ID I just got?

Background

I am using HapiJS (8) to proxy requests from the client to an existing API (where I have no control over processes/logic). The API requires each request to contain a 'session ID' in either the query string or the payload (depending on the http method). In order to get a session ID, all I have to do is ask for one... there is no username/pwd required (it uses Basic auth in the headers). The session ID expires every 24 hours if it isn't renewed. Each client has their own session ID.

I am currently using hapi-auth-cookie to store the value of the session ID which gets queried when the ID is needed. If the ID is expired or null, I need to request a new one before the client's request can be successfully proxy'd to the API.

Current Solution

When the client's request method is 'GET', I am handling this challenge quite gracefully utilizing the appendNext configuration described in the hapi-auth-cookie docs. The request is intercepted by hapi-auth-cookie, if a new session ID is needed, a request is sent to that particular route to get it, the API returns the ID which is then assigned to the Hapi session, and then (using Wreck) a reply.redirect returns to the original GET request where it completes. Seamless and graceful.

However, I cannot figure out how to accomplish this same flow with different http methods that contain payloads of data.

Is there something besides reply.redirect that will accomplish the same goal while maintaining original payloads and methods? Or is there a much better way to do this in general?

I can post code samples (coffeescript) if that helps, but I'll hold off until it is requested for simplicity sake.