500842 Passthru Soap Request (i.e.. act as proxy for Soap Request)

I am working on a project for a client, that they have several applications that communicate with a soap server, however they require all requests to go thru a proxy, and want to be able to answer several of the soap requests locally, then if it requires the outside server send the request from the inside php server basically like a proxy. So the only communication the Software has is with the rerouted internal php server. The setup is as follows: 1. Application makes call to [login to view URL] 2. Internal Routing redirects request to [login to view URL] (Internal Web Server) 3. Internal Web server serves requests for the requested page 3a. If the Method requested can be answered local it needs to answer it, 3b. Or it needs to forward the whole original request to the outside server, wait for response then return the answer back to the Software as if it was serving the answer. Does that make sense, if you have any questions let me know? The network routing is already done, and the Software is being answered by the internal PHP page, however I cannot get it to forward the request. I can provide the link to the WDSL for the outside soap server via PMB, as well as provide the methods we will be answering from inside the network.