我在 Windows 7 上开发一个带有 WCF REST 和 TCP(角色间)端点的项目。我刚刚升级到 Windows 8，现在我遇到了严重的问题。

首先，当我将我的项目部署到 Azure 时，我收到了这些警告:

Windows Azure Tools: Warning: Remapping private port 80 to 81 in role 'OfisimCRM.WebClient' to avoid conflict during emulation.

Windows Azure Tools: Warning: Remapping private port 443 to 446 in role 'OfisimCRM.WebClient' to avoid conflict during emulation.

Skype 已禁用，这不是问题所在。

这不是很重要，但重要的是尽管我完全禁用了防火墙，但我的角色间通信请求出现了更严重的错误。在这里:

Could not connect to net.tcp://127.255.0.0:22000/NotifyService. The connection attempt lasted for a time span of 00:00:01.1820716. TCP error code 10061: No connection could be made because the target machine actively refused it 127.255.0.0:22000.  - 
Server stack trace: 
   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)
   at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.CallOpenOnce.System.ServiceModel.Channels.ServiceChannel.ICallOnce.Call(ServiceChannel channel, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.CallOnceManager.CallOnce(TimeSpan timeout, CallOnceManager cascade)
   at System.ServiceModel.Channels.ServiceChannel.EnsureOpened(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

TCP 客户端代码:

public static LicenseItem CheckLicense(int userID)
{
    // This instance does not exist in memory cache. Check if other servers in the same web role know anything about this instance.
    var webRoles = RoleEnvironment.Roles["OfisimCRM.WebClient"];
    var myID = RoleEnvironment.CurrentRoleInstance.Id;
    LicenseItem remoteValue = null;
    foreach (var targetInstance in webRoles.Instances)
    {
        // I am currently going through a loop of instances. Check if the current enumaration shows my address.
        if (targetInstance.Id == myID)
        {
            // Skip.
        }
        else
        {
            // This is a neighbour instance. Check to see if it knows about the instance I'm looking for.
            NetTcpBinding binding = new NetTcpBinding(SecurityMode.None);

            EndpointAddress targetAddress = new EndpointAddress(
                String.Format("net.tcp://{0}/NotifyService", targetInstance.InstanceEndpoints["NotificationServiceEndPoint"].IPEndpoint)
                );

            ChannelFactory<INotifyService> channelFactory = new ChannelFactory<INotifyService>(binding, targetAddress);
            INotifyService targetClient = channelFactory.CreateChannel();

            try
            {
                remoteValue = targetClient.CheckLicense(userID);
                if (channelFactory.State != System.ServiceModel.CommunicationState.Faulted)
                {
                    channelFactory.Close();
                }
            }
            catch (TimeoutException timeoutException)
            {
                Trace.TraceError("Unable to check license on web role instance '{0}'. The service operation timed out. {1}", myID, timeoutException.Message);
                ((ICommunicationObject)targetClient).Abort();
            }
            catch (CommunicationException communicationException)
            {
                Trace.TraceError("Unable to check instance on web role instance '{0}'. There was a communication problem. {1} - {2}", myID, communicationException.Message, communicationException.StackTrace);
                ((ICommunicationObject)targetClient).Abort();
            }
        }
    }
    return remoteValue;
}

编辑 1:重要更新:

我认为问题出在第二个实例上。我进行了调试，发现连接仅被这个已停止的实例拒绝。我认为这可以解释一切，但我不知道为什么会这样。

编辑 2:临时解决方案:

我注意到这不是 Windows 8 的问题，因为我已将 Azure SDK 2012 年 6 月 SP1 升级到 2012 年秋季。我从 TFS 下载了我的项目的未升级版本，但我看到它正在运行。总之，它是 Azure SDK，但我不知道为什么。

最佳答案

重新映射端口号根本不是问题的征兆。这是正常行为，而且一直如此。 在执行/配置 Windows 8 Dev Box 时，您是否安装了“Windows 功能”WCF 激活:

另一种测试您的服务是否真正启动并运行的方法是:

• 通过启动计算模拟器并期待本地部署来确保您拥有端点
• 在提供的 IP 和端口号上 telnet 以查看是否可以真正建立连接

验证端点 UI:

好吧，这将向您显示输入端点。据我所知，您正在使用内部端点。只是为了试用，尝试将它们更改为 Input 以查看行为是否会发生一些变化。

但首先检查您是否安装了 WCF 激活。

关于wcf - Windows 8 Azure 模拟器正在将端口 80 重新映射到 81，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13272013/