Spring Provide the HttpRequest on the ClientResponse interface

The ClientResponse currenly does not provide an accessor to the HttpRequest object for which it was built.

This could be useful on (ExchangeFilterFunction)(https://github.com/spring-projects/spring-framework/blob/main/spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ExchangeFilterFunction.java) when handling redirects that happen at the TcpClient level.

Take for example the following sample:

    public Mono<ClientResponse> filter(ClientRequest request, ExchangeFunction next)
    {
        return next.exchange(request)
                   .doOnSubscribe(s -> {
                       logger.info("--> " + request.method() + ' ' + request.url()); //1
                   })
                   .doOnError(error -> logger.info("<-- HTTP FAILED", error))
                   .timed()
                   .map(timed -> {
                       var tookMs = timed.elapsed().toMillis();
                       var response = timed.get(); //2
                       logger.info("<-- {} {}", response.statusCode(), request.url());
                       return response;
                   });
    }

In the line "1", I print the URL being requested originally, however the URL that it was finally used could be different on "2" if a redirect was followed. At the moment, there isn't a way of accessing that information from the ClientResponse object.

Comment From: rstoyanchev

I don't see why we couldn't do that, and there is already a method on ClientResponse#Builder to set the request. Having the corresponding accessor to then expose it from the created ClientResponse makes sense.