Untitled

    public static class Function1
    {
        [FunctionName("EchoHeaders")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            string returnstring = "";

            foreach (var header in req.Headers)
            {
                returnstring += header.Key + ":" + header.Value + "</BR>";
            }

            string pageHTML = "<HTML><HEAD><TITLE>Header Echo test page<TITLE></HEAD><BODY><H1>Headers</H1>" + returnstring + "</HTML>";

            return (ActionResult)new OkObjectResult(pageHTML);

        }
    }