[[webflux-redirect-https]]
= Redirect to HTTPS

HTTPS is required to provide a secure application.
Spring Security can be configured to perform a redirect to https using the following Java Configuration:

[source,java]
----
@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.redirectToHttps();
	return http.build();
}
----

The configuration can easily be wrapped around an if statement to only be turned on in production.
Alternatively, it can be enabled by looking for a property about the request that only happens in production.
For example, if the production environment adds a header named `X-Forwarded-Proto` the following Java Configuration could be used:

[source,java]
----
@Bean
SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
	http
		// ...
		.redirectToHttps()
			.httpsRedirectWhen(e -> e.getRequest().getHeaders().containsKey("X-Forwarded-Proto"));
	return http.build();
}
----
