Integration

I have a client with a business service on OSB that connects to an external service outside their network.

That connection needs to go through the company's proxy server because it is outside the network. That external service requires 1-way ssl.

Can someone provide clarification on how OSB is expected to interact with an proxy server when the business service URI is https?

I have configured a proxy server on OSB under System Administration>Global Resources>Proxy Servers and set the configuration details on my business service to use the proxy server.

I tried setting the ssl port on the proxy server to 443, but the proxy server rejected the connection on that port.
If I just set the clear text port to 3128, I get a "socket closed" error.

The client seemed confused by the ssl port field. He claims he typically sends all traffic to the 3128 port.

We have the cert of the server hosting the external service in our OSB trust store (but I doubt the proxy server trusts it - if that matters I don't know).

Does anyone have any experience with this who can help me out?