Handling the "Forwarded" Header in Spring Boot Applications

When building web applications with Spring Boot, handling headers properly is crucial for security, debugging, and maintaining correct behavior in a reverse proxy or load balancer setup. One such header, Forwarded, is used to identify the original host, protocol, and client IP of a request that has passed through a proxy or load balancer. Understanding how to configure and handle the Forwarded header in Spring Boot is essential for developers looking to create robust and secure applications. This article delves into the techniques for effectively managing Forwarded headers in Spring Boot applications.