How to do the following tasks in a WebFilter?

[asarkar]

I've a WebFilter in a functional web app where I want to do the following. Unfortunately, the Javadoc is reminiscent of this, and the more I try, the more I get the application messed up.

1. Session management - Create if one doesn't already exist. I'm getting the session out of ServerWebExchange and calling isStarted on it - is this the way?
2. Send redirect without processing rest of the filter chain - I'm setting a Location header in the response and status 307, then calling setComplete, but the desired endpoint is never invoked.
3. Set request headers - I want to set a request header. Following is how I'm doing it which seems overly complicated for such a simple task.

val modifiedExchange = exchange.mutate().request(
     exchange.request.mutate().header(SESSION_ID, sessionId).build())
    .build()
    .also { it.response.beforeCommit { session.save() } }

chain.filter(modifiedExchange)

1 and 2 are suited for Spring security, but then, I couldn't find any docs for using that with the functional model.

[snicoll]

Thanks for getting in touch, but it feels like this is a question that would be better suited to Stack Overflow. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements. Feel free to update this issue with a link to the re-posted question (so that other people can find it) or add some more details if you feel this is a genuine bug.

[asarkar]

https://stackoverflow.com/q/46170274/839733