C# 如何加速缓慢的GetResponse和GetRequest？

我有一个ASP.NET C#网站，在一个地方运行得相当慢。当我使用探查器检查它时，两个缓慢点是GetResponse和GetRequest。我正在连接到第三方系统以获得日历上的可用性，因此我正在通过帖子与他们沟通。我们有一个对应的是在ASP经典，它似乎更快，但我没有简单的方法来分析它

我正在发送一个编码为大约440字节的XML字符串字节，这取决于一些事情，返回值低于2k。我在这里介绍了大部分相关的程序。我尝试将默认代理设置为

GetEmptyWebProxy

，以防在阅读时有所帮助

处理请求/响应需要2到5秒。压力很大，因为老板正在数河马，而我无法得到经典版本的真实数据，所以这一点上都是感知

我的问题是——我是在尽我所能的快，这是野兽的本性，还是我能做些什么来加速这种交流？非常感谢您的帮助

下面是一些代码：

    protected void UpdateInventory(DateTime _SelectedDate)
{
    // build request object
    Envelope _Request = new Envelope();
    _Request.Body = new Body();
    _Request.Body.QueryEvents = new QueryEvents();
    _Request.Header = new Header();

    //setup search criteria for API request
    _Request.Body.QueryEvents.EventRangeBeginDate = _SelectedDate.ToString(_DTFormat);
    _Request.Body.QueryEvents.EventRangeEndDate = _SelectedDate.AddDays(1).ToString(_DTFormat);
    _Request.Body.QueryEvents.EventTypeID = _EventTypeId;
    _Request.Header.SourceID = "BackOffice";
    _Request.Header.MessageID = 0;
    _Request.Header.MessageType = "QueryEvents";
    _Request.Header.TimeStamp = LocaleHelper.LocalNow.ToString(_DTFormat);
    _Request.Header.EchoData = "BO Calendar";

    // send API request
    HttpStatusCode _Status = GetGatewayInventory(_Request);
}

protected HttpStatusCode GetGatewayInventory(Envelope _InvRequest)
{
    // set up return value
    HttpStatusCode _RetVal = HttpStatusCode.Unused;

    // initialize global inventory object
    _Inventory = new Envelope();

    // serialize request object into XML
    XmlSerializer _Serializer = new XmlSerializer(_InvRequest.GetType());
    MemoryStream _Stream = new MemoryStream();
    _Serializer.Serialize(_Stream, _InvRequest);

    XmlDocument _Doc = new XmlDocument();
    _Stream.Position = 0;
    _Doc.Load(_Stream);

    // remove unneeded info.
    XmlNode _Node = _Doc.SelectSingleNode("/Envelope");
    XmlElement _ENode = (XmlElement)_Node;
    _ENode.RemoveAttribute("xmlns:xsi");
    _ENode.RemoveAttribute("xmlns:xsd");

    // clean up
    string _XmlStr = _Doc.InnerXml.Replace("\"1.0\"", "'1.0'");
    byte[] _Bytes = System.Text.Encoding.ASCII.GetBytes(_XmlStr);

    // send string to gateway
    // set web request
    string _GWHost = _GatewayHostLive;

    HttpWebRequest _req = (HttpWebRequest)WebRequest.Create(_GWHost);

    IWebProxy myProxy = GlobalProxySelection.GetEmptyWebProxy();
    GlobalProxySelection.Select = myProxy;
    _req.Proxy = myProxy;      

    _req.Method = "POST";
    _req.ContentLength = _Bytes.Length;
    _req.ContentType = "text/xml; encoding='utf-8'";

    Stream _RequestStream = _req.GetRequestStream();        
    _RequestStream.Write(_Bytes, 0, _Bytes.Length);
    _RequestStream.Close();

    using (HttpWebResponse _Resp = (HttpWebResponse)_req.GetResponse())
    {
        _RetVal = _Resp.StatusCode;

        if (_Resp.StatusCode == HttpStatusCode.OK)
        {
            Stream _respStream = _Resp.GetResponseStream();
            XmlTextReader _xmlreader = new XmlTextReader(_respStream);
            XmlDocument _RespXml = new XmlDocument();
            _RespXml.Load(_xmlreader);
            _xmlreader.Close();

            // deserialize back into object
            StringReader _sr = new StringReader(_RespXml.InnerXml);
            XmlSerializer _XmlSr = new XmlSerializer(_Inventory.GetType());
            XmlReader _Inreader = new XmlTextReader(_sr);
            _Inventory = (Envelope)_XmlSr.Deserialize(_Inreader);

            StripExtrasIfOnlyShowFirstAvailable(_Inventory, CountTotalTickets());

            grd_EventTimes.DataSource = _Inventory.Body.Events.Event;
            grd_EventTimes.DataBind();
            grd_EventTimes.Visible = true;
            if (_Inventory.Body.Events.Event.Count > 0)
                lbl_GatewayId.Text = "GN: " + _Inventory.Body.Events.Event[0].EventName + "  ID:" + _EventTypeId ; 
        }
        _Resp.Close();
    }
    // exit and return value
    return _RetVal;
}

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您可以尝试禁用via

ServicePointManager.usenaglalgorithm=false

，请参阅

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唠叨的（坏）影响会给你的POST请求增加至少半秒的额外延迟。它与小POST请求混合得很糟糕，因为这些请求在等待（读取）响应之前会对底层TCP流进行两次写入。请参阅Nagle Wikipedia链接中的详细信息。

尝试过这个？是的，我先尝试过，然后发现GetEmptyWebProxy是首选，但我两个都尝试过。顺便说一句，服务是SSL/TLS吗？不是在“体验”的这一点上。在获取个人信息之前，它会稍后翻转，但这只是HTTP: