更改日期时的HttpClient缓存

我的应用程序有问题 HttpClient 。当我在手机上更改日期或时间时 HTTP客户端 缓存被打乱了。例如,当我向后更改日期并再次运行应用程序时,每个响应都会从缓存中提取,而当我向前移动日期时,不会缓存任何请求,也不会从缓存中获取。我不知道问题在哪里,所以如果你遇到类似的问题,请帮忙。

有没有办法清除 HTTP客户端 编程缓存?我会在每次应用程序启动时都这样做。

编辑: 我刚刚使用Fiddler查看了响应,发现“Date”响应头中的时间是正确的时间(在服务器上) HTTP客户端 将此标头与设备上的时间一起用于计算,这会返回错误的结果

编辑2: 一个用例: 当用户打开应用程序并获取url时( http://my.website.com/jsondata )其中缓存控制头设置为10秒,然后关闭应用程序并向后或向前更改时间,然后在某个时间内再次打开应用程序,在第一种情况下,httpclient总是从其缓存中获取相同url的响应,在第二种情况下决不再使用缓存(如果用户在10秒内多次请求相同的url)

我的代码是:

public async Task<StringServerResponse> DownloadJsonAsync(Uri uri, DecompressionMethods decompressionMethod = DecompressionMethods.None, int timeout = 30000, int retries = 3)
    {

        if (retries < 1 || retries > 10) retries = 3;
        int currentRetries = 0;

        // Baseline delay of 1 second
        int baselineDelayMs = 1000;
        // Used for exponential back-off
        Random random = new Random();

        StringServerResponse response = new StringServerResponse();

        if (decompressionMethod == DecompressionMethods.GZip)
        {
             //Use decompression handler
            using (var compressedHttpClientHandler = new HttpClientHandler())
            {
                if (compressedHttpClientHandler.SupportsAutomaticDecompression)
                {
                    compressedHttpClientHandler.AutomaticDecompression = System.Net.DecompressionMethods.GZip;
                }
                using (var httpClient = new HttpClient(compressedHttpClientHandler))
                {
                    httpClient.Timeout = TimeSpan.FromMilliseconds(timeout);

                    do
                    {
                        ++currentRetries;
                        try
                        {
                            var httpResponse = await httpClient.GetAsync(uri, HttpCompletionOption.ResponseContentRead);
                            if (httpResponse.IsSuccessStatusCode)
                            {
                                response.StatusCode = httpResponse.StatusCode;
                                response.Content = await httpResponse.Content.ReadAsStringAsync();
                                return response;
                            }
                        }
                        catch (Exception)
                        {
                        }

                        int delayMs = baselineDelayMs + random.Next((int) (baselineDelayMs*0.5), baselineDelayMs);
                        if (currentRetries < retries)
                        {
                            await Task.Delay(delayMs);
                            DebugLoggingService.Log("Delayed web request " + delayMs + " seconds.");
                        }

                        // Increment base-delay time
                        baselineDelayMs *= 2;

                    } while (currentRetries < retries);
                }
            }
        }
        else
        {
            // same but without gzip handler
        }

        return null;
    }