SignalR 给出 'The ConnectionId is in the incorrect format'

Question

我有一个 SignalR 项目，该项目在我的开发环境中正常运行，但是一旦将其转移到生产环境中，几乎每个调用都会因错误而失败

The ConnectionId is in the incorrect format.

我在 StackOverflow 上看到了一些关于相同错误消息的其他项目，但没有一个有帮助的解决方案。

我正在使用 SignalR 2.0.2 和 SignalR Scaleout with SQL Server ，实际上是 SignalR 的负载平衡器，它使用 SQL Server 进行协调。

Event code: 3005 Event message: An unhandled exception has occurred. Event time: 2/11/2014 9:11:27 PM Event time (UTC): 2/12/2014 3:11:27 AM Event ID: cff1fd93fa6d4b83b1848078a905371c Event sequence: 73 Event occurrence: 10 Event detail code: 0 Application information:

Application domain: /LM/W3SVC/2/ROOT-3-130366479327251392 
Trust level: Full 
Application Virtual Path: / 
Application Path: C:\inetpub\wwwroot\<remvoved>
Machine name: BSDUSHC1WW09    Process information: 
Process ID: 7088 
Process name: w3wp.exe 
Account name: <remvoved>    Exception information: 
Exception type: InvalidOperationException 
Exception message: The ConnectionId is in the incorrect format.    at

Microsoft.AspNet.SignalR.PersistentConnection.GetConnectionId(HostContext context, String connectionToken) at Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequest(HostContext context) at Microsoft.AspNet.SignalR.Hubs.HubDispatcher.ProcessRequest(HostContext context) at Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequest(IDictionary`2 environment) at Microsoft.Owin.Mapping.MapMiddleware.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.EndFinalWork(IAsyncResult ar) at System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Request information: Request URL: http:///signalr/connect?transport=serverSentEvents&connectionToken=GZlhDBCjkD1/bL1rc4Rlq2PVKYRs0B9nN7b71cU/E6x7sCsFvR1DqM/rBnDhg+URwkYyBlGmrczV59XIn/goyt9x0xXOd8Gs3Qswo1oXqSttH2QPO548C0fbdBvvlUupzS4S0Rl+aShoQwnj+qFDpA==&connectionData=[{"Name":""}]

Request path: /signalr/connect 
User host address: 10.240.14.26 
User: <remvoved>
Is authenticated: True 
Authentication Type: Negotiate 
Thread account name: <remvoved>    Thread information: 
Thread ID: 23 
Thread account name: <remvoved>
Is impersonating: False 
Stack trace:    at Microsoft.AspNet.SignalR.PersistentConnection.GetConnectionId(HostContext

context, String connectionToken) at Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequest(HostContext context) at Microsoft.AspNet.SignalR.Hubs.HubDispatcher.ProcessRequest(HostContext context) at Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequest(IDictionary`2 environment) at Microsoft.Owin.Mapping.MapMiddleware.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.EndFinalWork(IAsyncResult ar) at System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Answer 1

就像对使用 Session 的 ASP.NET 网站进行负载平衡一样，带有 SQL Server Scaleout 的 SignalR 要求处理 SignalR 请求的所有服务器 必须共享机器 key .

SignalR 的文档中没有明显提到这一点，所以我必须假设 connectionToken上面的事件日志消息是使用机器 key 加密的。当应用程序访问服务器 1 时，它会被分配一个使用该机器的机器 key 生成的 connectionToken。如果应用程序随后使用分配的 connectionToken 访问服务器 2，则机器 2 无法解密 token ，除非它具有匹配的机器 key 。

网上有无数关于如何设置机器 key 的资源，所以我只留下最简单的一个。单击 IIS 8(也可能是 7)中的网站并打开机器 key 设置。点击Generate Keys在右侧的操作 Pane 中。取消选中 Validation Key 下的“为每个应用程序生成唯一 key ”复选框。和 Decryption Key部分。