5

我正在使用一项服务以 XML 文档的形式提取酒店列表。所有这些在我们的开发服务器上测试时都可以正常工作,但是在部署它后不久,所有使用它的页面都被破坏并显示此错误:

An operation on a socket could not be performed because the system lacked
sufficient buffer space or because a queue was full 91.103.175.187:80

Description: An unhandled exception occurred during the execution of the current
web request. Please review the stack trace for more information about the error
and where it originated in the code. 

Exception Details: System.Net.Sockets.SocketException: An operation on a socket
could not be performed because the system lacked sufficient buffer space or
because a queue was full 91.103.175.187:80

Stack Trace: 

[SocketException (0x2747): An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full 91.103.175.187:80]
   System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) +305
   System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception) +699

[WebException: Unable to connect to the remote server]
System.Net.HttpWebRequest.GetResponse() +7859156
Laterooms.Gateway.LateroomsGateway.GetHotelsWithurl(String url)
Laterooms.Gateway.LateroomsGateway.GetHotelsByKeyword(String keyword, String orderBy) 
Laterooms.LateroomsManager.GetHotelsByKeyword(String keyword, String orderBy, String lang)

看到这个后,我认为这可能是由于发出的请求量很大,所以我实现了缓存,但仍然出现同样的问题。这是我用来提取数据的代码:

    HttpWebRequest request = null;

    Uri uri = new Uri(url);
    request = (HttpWebRequest)WebRequest.Create(uri);
    request.Method = "POST";
    request.AllowWriteStreamBuffering = false;
    request.ContentLength = 0;
    request.KeepAlive = false;

    using (WebResponse response = request.GetResponse())
    {
        using (Stream dataStream = response.GetResponseStream())
        {
            _LateroomsXml.Load(dataStream);
        }
    }

同样,此问题仅发生在我们的实时服务器上。经过数小时的调试和谷歌搜索,我还没有接近解决这个问题。

对此的任何帮助将不胜感激!

4

2 回答 2

12

请不要使用该修复程序。您的问题是您禁用了保持活动,因此它为每个请求使用不同的连接,并且端口在几分钟内无法再次使用。它正在做它应该做的事情。

启用keep-alive,您的问题就会消失。

于 2013-10-24T06:46:48.703 回答
3

我最终找到了解决这个问题的方法,以防其他人被卡住!

这里

https://support.microsoft.com/en-us/kb/196271

  1. 启动注册表编辑器。

  2. 在注册表中找到以下子项,然后单击参数:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

  3. 在编辑菜单上,单击新建,然后添加以下注册表项:

    值名称:MaxUserPort

    值类型:DWORD

    数值数据:65534

    有效范围:5000-65534(十进制)

    默认值:0x1388(十进制 5000)

  4. 退出注册表编辑器,然后重新启动计算机。

这与一些更好的缓存相结合,因此每次用户加载页面时都不会拉入数据,这将防止这种情况再次发生。

于 2013-06-18T15:48:24.917 回答