SignalR在远程机器上部署时不工作

本文关键字：部署 工作 机器 程机器 SignalR | 更新日期: 2023-09-27 18:01:15

我正在开发一个网络聊天应用程序，但遇到了一个奇怪的问题。该应用程序在我的本地机器上运行良好，但在远程机器上卡住了。

我完全不知道如何提供关于我的问题的线索(如果有跟踪问题的技巧，请提供建议(，我从$.connection.hub.error得到的唯一错误是

Protocol error: Unknown transport.
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.InvalidOperationException: Protocol error: Unknown transport.
Source Error: 
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace: 
[InvalidOperationException: Protocol error: Unknown transport.]
   Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequest(HostContext context) +866
   Microsoft.AspNet.SignalR.Hubs.HubDispatcher.ProcessRequest(HostContext context) +174
   Microsoft.AspNet.SignalR.Owin.CallHandler.Invoke(IDictionary`2 environment) +628
   Microsoft.AspNet.SignalR.Owin.Handlers.HubDispatcherHandler.Invoke(IDictionary`2 environment) +222
   Microsoft.Owin.Host.SystemWeb.OwinCallContext.Execute() +55
   Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object extraData) +259
[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   Microsoft.Owin.Host.SystemWeb.CallContextAsyncResult.End(IAsyncResult result) +110
   Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.EndProcessRequest(IAsyncResult result) +7
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8836913
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

以下是控制台日志提供的内容。

SignalR: Negotiating with '<root_url>/signalr/negotiate'. jquery.signalR-1.0.0-rc2.js:54
SignalR: Attempting to connect to SSE endpoint '<root_url>/signalr/connect?transport=serverSentEv…2fc32a4&connectionData=%5B%7B%22name%22%3A%22xmppservicehub%22%7D%5D&tid=7' jquery.signalR-1.0.0-rc2.js:54
SignalR: EventSource timed out trying to connect jquery.signalR-1.0.0-rc2.js:54
SignalR: EventSource readyState: 0 jquery.signalR-1.0.0-rc2.js:54
SignalR: EventSource calling close() jquery.signalR-1.0.0-rc2.js:54
SignalR: This browser supports SSE, skipping Forever Frame. jquery.signalR-1.0.0-rc2.js:54
SignalR: SignalR: Initializing long polling connection with server. jquery.signalR-1.0.0-rc2.js:54
SignalR: Attempting to connect to '<root_url>/signalr/connect?transport=longPolling&…fc32a4&connectionData=%5B%7B%22name%22%3A%22xmppservicehub%22%7D%5D&tid=10' using longPolling. jquery.signalR-1.0.0-rc2.js:54
SignalR: Longpolling connected jquery.signalR-1.0.0-rc2.js:54
SignalR: Attempting to connect to '<root_url>/signalr?transport=longPolling&connecti…%7CS%2C1%7CT%2C0%7CQ%2C0&groups=%5B%22XmppServiceHub.howtodemo%22%5D&tid=2' using longPolling. jquery.signalR-1.0.0-rc2.js:54
SignalR: Attempting to connect to '<root_url>/signalr?transport=longPolling&connecti…%7CR%2C0%7CS%2C1%7CT%2C0&groups=%5B%22XmppServiceHub.howtodemo%22%5D&tid=8' using longPolling. jquery.signalR-1.0.0-rc2.js:54
SignalR: Attempting to connect to '<root_url>/signalr?transport=longPolling&connecti…%7CR%2C0%7CS%2C1%7CT%2C0&groups=%5B%22XmppServiceHub.howtodemo%22%5D&tid=5' using longPolling. jquery.signalR-1.0.0-rc2.js:54
SignalR: An error occurred using longPolling. Status = error. <html>
    <head>
        <title>Protocol error: Unknown transport.</title>

FYI:

  • 服务器端是SignalR集线器，描述了只读会话这里
  • Asp.Net MVC 4
  • IIS 6 Web服务器

我不知道如何提供任何线索，如果这些信息还不够，请告诉我应该提供更多的信息。

编辑

在使用nuget(版本1.0.0(的最新libs更新后，我得到了以下eror(仍然是相同的控制台日志，在本地机器上仍然工作良好，但在远程机器上(

[ObjectDisposedException]: The CancellationTokenSource has been disposed.
Server stack trace: 
   at System.Threading.CancellationTokenSource.ThrowIfDisposed()
   at System.Threading.CancellationTokenRegistration.Dispose()
   at Microsoft.AspNet.SignalR.Infrastructure.CancellationTokenExtensions.<>c__DisplayClass6`1.<SafeRegister>b__1()
   at Microsoft.AspNet.SignalR.Infrastructure.DisposableAction.Dispose(Boolean disposing)
   at Microsoft.AspNet.SignalR.Infrastructure.DisposableAction.Dispose()
   at Microsoft.AspNet.SignalR.Transports.TransportHeartbeat.EndConnection(ConnectionMetadata metadata)
   at Microsoft.AspNet.SignalR.Transports.TransportHeartbeat.AddConnection(ITrackingConnection connection)
   at Microsoft.AspNet.SignalR.Transports.LongPollingTransport.ProcessRequest(ITransportConnection connection)
   at Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequest(HostContext context)
   at Microsoft.AspNet.SignalR.Hubs.HubDispatcher.ProcessRequest(HostContext context)
   at Microsoft.AspNet.SignalR.Owin.CallHandler.Invoke(IDictionary`2 environment)
   at Microsoft.AspNet.SignalR.Owin.Handlers.HubDispatcherHandler.Invoke(IDictionary`2 environment)
   at Microsoft.Owin.Host.SystemWeb.OwinCallContext.Execute()
   at Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object extraData)
Exception rethrown at [0]: 
   at Microsoft.Owin.Host.SystemWeb.Utils.<>c__DisplayClass1.<GetRethrowWithNoStackLossDelegate>b__0(Exception ex)
   at Microsoft.Owin.Host.SystemWeb.Utils.RethrowWithOriginalStack(Exception ex)
   at Microsoft.Owin.Host.SystemWeb.CallContextAsyncResult.End(IAsyncResult result)
   at Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.EndProcessRequest(IAsyncResult result)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

提前感谢

SignalR在远程机器上部署时不工作

SignalR不支持<IIS 7。

编辑：我们不支持IIS<7，但也可以设置一些配置来支持它。

看起来你的应用程序正在运行，但你在这里遇到了这个问题https://github.com/SignalR/SignalR/issues/1549，已在下一版本中修复。

当您提供错误的集线器URL时，也会出现传输问题。即使在URL末尾添加一个额外的正斜杠，也会出现此问题。

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