Buffered Middleware - allows responses to be read by the out-of-the-box arduino HTTP libraries

BufferedMiddleware.cs

  public class BufferMiddleware : IMiddleware
  {
    public async Task InvokeAsync(HttpContext context, RequestDelegate next)
    {
      var newContent = string.Empty;
      var originalBody = context.Response.Body;

      using (var newBody = new MemoryStream())
      {
        // We set the response body to our stream so we can read after the chain of middlewares have been called.
        context.Response.Body = newBody;

        await next(context);

        // Reset the body so nothing from the latter middlewares goes to the output.
        context.Response.Body = originalBody;

        context.Response.Headers.ContentLength = newBody.Length;
        context.Response.Headers.Remove("Transfer-Encoding");

        // Send our modified content to the response body.
        await context.Response.Body.WriteAsync(newBody.ToArray());
      }
    }
  }