我有一个C＃客户端调用REST API来记录我的数据 .

我的客户端代码非常简单：

public class Tester
{
    private readonly string _baseUri = "URI";
    private readonly string _createUpdateLogUri = "v1.0/log";
    private readonly HttpClient _httpClient;
    private readonly MediaTypeHeaderValue _textPlainContent = MediaTypeHeaderValue.Parse("text/plain");
    private readonly Encoding _encoding = Encoding.GetEncoding("ISO-8859-1");

    public Tester()
    {
        _httpClient = new HttpClient
        {
            BaseAddress = new Uri(_baseUri),
            Timeout = new TimeSpan(0, 5, 0)
        };

    }

    public void Log(Head head, string ticket, string clientIp, string clientName, string headIp, string headName)
    {


        var main = new Main
        {
            Ticket = Convert.ToBase64String(_encoding.GetBytes(ticket)),
            Application = head.ApplicationCaller,
            ClientApplication = head.ApplicationCode,
            ClientIp = clientIp,
            ClientName = clientName,
            ClientUser = head.User,
            Command = head.Command,
            HeaderIp = headIp,
            HeaderName = headName,
            HeaderTimestamp = DateTime.UtcNow,
            Module = head.Module,
            Guid = head.CallIdentifier,
            CreatedTimestamp = DateTime.UtcNow,

        };


        var mainToStringContent = ObjectToStringContent(main);

        var headToXml = XmlHelper<Head>.SerializeObjectToXml(head);

        var headToBytes = _encoding.GetBytes(headToXml);

        var headContent = new ByteArrayContent(headToBytes, 0, headToBytes.Length);
        headContent.Headers.ContentType = _textPlainContent;

        var form = new MultipartFormDataContent
        {
            {
                headContent, "header", "head.txt"
            },
            {
                mainToStringContent, "main"
            }
        };

        try
        {
            var result = _httpClient.PostAsync(_createUpdateLogUri, form).Result;
        }
        catch (SocketException e)
        {
            Console.WriteLine(e);
        }
        catch (Exception e)
        {
            Console.WriteLine(e); 
        }

    }

    private StringContent ObjectToStringContent<T>(T myObject)
    {
        var jsonSettings = new JsonSerializerSettings
        {
            NullValueHandling = NullValueHandling.Ignore
        };

        var objectToJson = JsonConvert.SerializeObject(myObject, Formatting.Indented, jsonSettings);

        return new StringContent(objectToJson, _encoding);
    }
}

要检查呼叫是否成功，我使用fiddler捕获流量，当客户端执行更多呼叫时，在某些情况下（例如4/100），我收到此错误 .

[Fiddler]与'URI'的连接失败 . 错误：ConnectionRefused（0x274d） . System.Net.Sockets.SocketException无法 Build 连接，因为目标计算机主动拒绝它：URI：80

但是在我的客户端中，从未捕获此异常，然后验证日志，不记录某些数据 .
我怎么解决这个问题？？我的代码或流量在我的服务器上？提前感谢您的回答 .

c# .net rest fiddler socketexception