C# 将Xamarin客户端连接到信号服务器

在你开始寻找副本之前，请阅读到最后

我在虚拟机中有两个项目：

ASP.NET Web应用程序，托管信号器服务器。完全是教程项目

简单的Xamarin.Android项目，使用HAXM在Intel emulator上运行

环境：在Macbook上，我有运行Windows 10的VMWare虚拟机。所有东西（两个项目）都在这个虚拟机中运行

Environment*：在虚拟机的设置中，我设置了桥接网络Wi-Fi，这意味着“虚拟机显示为物理以太网网络“Wi-Fi”上的附加计算机”。因此，我的虚拟机具有类似10.0.1.56的IP EDIT：还有一个非常重要的提示：我已经构建了一个Xamarin.Forms项目，并用OnStart方法在PCL中创建了相同的signar客户端（请看下面的代码）。我运行iOS项目，它成功了

问题是： 无法从

Xamarin.Android

客户端连接到ASP.NET服务器中的

ConnectionHub

以下是我迄今为止所做的工作：

我知道我不能使用localhost，我想我必须使用10.0.1.56。但那没用

然后，我遵循了解决方案。我关闭了防火墙，运行powershell命令，然后。。。我三点不及格。我在

applicationhost.config

中添加了绑定，并重新启动了vm和macbook。重新打开所有内容，使用浏览器我可以连接并从10.0.1.56:642发送消息。同样，使用常规浏览器。我可以从虚拟机甚至Macbook上做到这一点！但后来我尝试了Xamarin.Android，但失败了

以下是Xamarin.Android代码：它基本上是VisualStudio创建的默认应用程序。我刚刚更改了OnCreate的

方法：

    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);

        // Get our button from the layout resource,
        // and attach an event to it
        Button button = FindViewById<Button>(Resource.Id.MyButton);
        button.Click += async delegate 
        {
            button.Text = string.Format("{0} clicks!", count++);
            var hubConnection = new HubConnection("http://10.0.1.56:64642");
            var chatHubProxy = hubConnection.CreateHubProxy("ChatHub");
            try
            {
                // Start the connection
                await hubConnection.Start();
                // Invoke the 'UpdateNick' method on the server
                await chatHubProxy.Invoke("Send", new object[] { "TheMessage", "JohnDoe" });
            }
            catch(Exception ex)
            {
                // Here I'm catching those exceptions... 
            }
        };
    }

protectedoverride void OnCreate（捆绑包）
{
base.OnCreate（bundle）；
//从“主”布局资源设置视图
SetContentView（Resource.Layout.Main）；
//从布局资源中获取我们的按钮，
//并在其上附加一个事件
Button Button=FindViewById（Resource.Id.MyButton）；
按钮。单击+=异步委托
{
button.Text=string.Format（“{0}点击！”，count++）；
var hubConnection=新的hubConnection（“http://10.0.1.56:64642");
var chatHubProxy=hubConnection.CreateHubProxy（“ChatHub”）；
尝试
{
//启动连接
等待连接。开始（）；
//在服务器上调用“UpdateNick”方法
等待chatHubProxy.Invoke（“发送”，新对象[]{“TheMessage”，“JohnDoe”}）；
}
捕获（例外情况除外）
{
//在这里，我捕捉到这些例外。。。
}
};
}

例外情况是：

  {System.Net.WebException: Error: ConnectFailure (Network is unreachable) ---> System.Net.Sockets.SocketException: Network is unreachable
  at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x000cb] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System/System.Net.Sockets/Socket.cs:1313 
  at System.Net.WebConnection.Connect (System.Net.HttpWebRequest request) [0x0019b] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System/System.Net/WebConnection.cs:195 
   --- End of inner exception stack trace ---
  at System.Net.HttpWebRequest.EndGetResponse (System.IAsyncResult asyncResult) [0x0005e] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System/System.Net/HttpWebRequest.cs:1023 
  at System.Threading.Tasks.TaskFactory`1[TResult].FromAsyncCoreLogic (System.IAsyncResult iar, System.Func`2[T,TResult] endFunction, System.Action`1[T] endAction, System.Threading.Tasks.Task`1[TResult] promise, System.Boolean requiresSynchronization) [0x00014] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/FutureFactory.cs:550 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128 
  at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:535 
  at System.Net.Http.HttpClientHandler+<SendAsync>c__async0.MoveNext () [0x003ce] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System.Net.Http/System.Net.Http/HttpClientHandler.cs:379 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128 
  at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:535 
  at System.Net.Http.HttpClient+<SendAsyncWorker>c__async0.MoveNext () [0x000a9] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System.Net.Http/System.Net.Http/HttpClient.cs:276 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113 
  at AndroidApp.MainActivity+<>c__DisplayClass1_0+<<OnCreate>b__0>d.MoveNext () [0x000a5] in C:\Data\Projects\SinglaRSamples\AndroidApp\AndroidApp\MainActivity.cs:36 }

{System.Net.WebException:错误：ConnectFailure（网络不可访问）--->System.Net.Sockets.SocketException:网络不可访问
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System/System.Net.Sockets/Socket.cs:1313中的System.Net.Sockets.Socket.Connect（System.Net.EndPoint remoteEP）[0x000cb]处
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System/System.Net/WebConnection.cs:195中的System.Net.WebConnection.Connect（System.Net.HttpWebRequest请求）[0x0019b]
---内部异常堆栈跟踪的结束---
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System/System.Net/HttpWebRequest.cs:1023中的System.Net.HttpWebRequest.EndGetResponse（System.IAsyncResult asyncResult asyncResult）[0x0005e]
在System.Threading.Tasks.TaskFactory`1[TResult].FromAsyncCoreLogic（System.IAsyncResult iar，System.Func`2[T，TResult]endFunction，System.Action`1[T]endAction，System.Threading.Tasks.Task`1[TResult]promise，System.Boolean requiresSynchronization）[0x00014]在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/FutureFactory.cs:550中
---来自引发异常的上一个位置的堆栈结束跟踪---
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/System/Runtime/ExceptionServices/ExceptionServices/exceptionservicescommon.cs:143中的System.Runtime.ExceptionDispatchInfo.Throw（）[0x0000c]
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/System/Runtime/CompilerServices/taskwaiter.ThrowForNonSuccess（System.Threading.Tasks.Task）[0x00047]
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/System/Runtime/CompilerServices/taskwaiter.HandleNonSuccessAndDebuggerNotification（System.Threading.Tasks.Task）[0x0002e]中的System.Runtime.CompilerServices/Taskwaiter.cs:156
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/System/Runtime/CompilerServices/TaskAwaiter.cs:128中的System.Runtime.CompilerServices.taskwaiter.ValidateEnd（System.Threading.Tasks.Task任务）[0x0000b]
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/System/Runtime/CompilerServices/TaskAwaiter.cs:535中的System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult（）[0x00000]
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/System.Net.Http/System.Net/System.Net.Http/System.Net.Http/HttpClientHandler.cs:379中的System.Net.Http.HttpClientHandler+c_uasync0.MoveNext（）[0x003ce]
---来自引发异常的上一个位置的堆栈结束跟踪---
在/Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/System/Runtime/ExceptionServices/ExceptionServices/exceptionservicescommon.cs:143中的System.Runtime.ExceptionDispatchInfo.Throw（）[0x0000c]
在/Users/builder/data/lanes/3511/77cb8568/source中的System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（System.Threading.Tasks.Task任务）[0x00047]处