Spring Cloud Gateway - Mutual Authentication

Spring Cloud Gateway is described by the vendor as:

This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.

The SCG default implementation for outbound connections is to use HTTP.   At the time of this blog post, documentation does not exist which shows an example of how to enable outbound HTTPS with mutual authentication.  This solution was made to fill that gap.

How to enable mutual authentication for a Spring Cloud Gateway instance: 

• Github Gist