var fluxzySetting = FluxzySetting.CreateLocalRandomPort();
fluxzySetting.ConfigureRule().WhenAny()
    .TransformResponse(
        (_, originalContent) => Task.FromResult(originalContent.ToUpperInvariant()));

var setting = FluxzySetting.CreateLocalRandomPort();
setting.ConfigureRule().WhenAny().TransformRequest(TransformationFunction);

async Task<BodyContent?> TransformationFunction(TransformContext context, IBodyReader originalContent)
{
    // context.Exchange : information about the ongoing exchange
    // context.Connection : information about the connection, could be null with a request body since the remote connection is not yet established
    
    var contentAsString = await originalContent.ConsumeAsString(); // consume content a string 

    // Alternatively you can consume the content in other formats:
    //
    // var contentAsByteArray = await originalContent.ConsumeAsBytes(); // consume content as a byte array
    // var contentAsStream = originalContent.ConsumeAsStream(); // consume content as a stream
    //
    // You can return null to dismiss any read/modification. However, it will work only if the sream has not been consumed yet. 
    
    var hash = System.Security.Cryptography.SHA256
                     .HashData(Encoding.UTF8.GetBytes(contentAsString));
    var hashAsString = System.Convert.ToHexString(hash);

    return new BodyContent(hashAsString);
}