信号器：JavaScript客户端无法在IE上重新连接（parseerror异常）

时间：2013-09-06 05:30:41

标签： javascript .net signalr

配置/设置：

  • Windows 7 64位，.Net 4.5，Visual Studio 2012
  • 自主信号服务器（控制台应用）
  • JavaScript客户端

背景

我开始以this self host tutorial为基础，最终目标是配置可以跨域连接的中心服务器（CORS）。我主要使用版本2.0.0-rc1。

回购步骤：

回购步骤很简单。从好的ol IE（版本10）导航到测试页面（default.html）并等待。

以下是信号器客户端日志，详细说明了发生的情况：

[21:47:30 PDT] SignalR: Auto detected cross domain url. 
 [21:47:30 PDT] SignalR: Client subscribed to hub 'selfieserver'. 
 [21:47:30 PDT] SignalR: Negotiating with 'http://localhost:8889/signalr/negotiate?connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&clientProtocol=1.3'. 
 [21:47:31 PDT] SignalR: Opening long polling request to 'http://localhost:8889/signalr/connect?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAAIkua2h4902EBFsaUr1NkAAAAAACAAAAAAADZgAAwAAAABAAAADId6sPY7u1b7U4MSyyjEGgAAAAAASAAACgAAAAEAAAAPbquY3AwSaeBDURBcXbiv8oAAAA5cpbDNk5rm0qDdq6nDWpqiazmTL4R%2Bv%2FI%2FSzcW1eAI71AkllpeDIKxQAAAAfYvObLT5lU2OeXpUvdjR%2B%2BLpotQ%3D%3D&connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&tid=8'. 
 [21:47:31 PDT] SignalR: Long poll complete. 
 [21:47:31 PDT] SignalR: LongPolling connected. 
 [21:47:31 PDT] SignalR: Opening long polling request to 'http://localhost:8889/signalr/poll?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAAIkua2h4902EBFsaUr1NkAAAAAACAAAAAAADZgAAwAAAABAAAADId6sPY7u1b7U4MSyyjEGgAAAAAASAAACgAAAAEAAAAPbquY3AwSaeBDURBcXbiv8oAAAA5cpbDNk5rm0qDdq6nDWpqiazmTL4R%2Bv%2FI%2FSzcW1eAI71AkllpeDIKxQAAAAfYvObLT5lU2OeXpUvdjR%2B%2BLpotQ%3D%3D&messageId=d-4213A9B0-B%2C0%7CU%2C0%7CV%2C1%7CW%2C0&connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&tid=4'. 
 [21:48:01 PDT] SignalR: An error occurred using longPolling. Status = parsererror.  Response = undefined. 
 [21:48:04 PDT] SignalR: Opening long polling request to 'http://localhost:8889/signalr/reconnect?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAAIkua2h4902EBFsaUr1NkAAAAAACAAAAAAADZgAAwAAAABAAAADId6sPY7u1b7U4MSyyjEGgAAAAAASAAACgAAAAEAAAAPbquY3AwSaeBDURBcXbiv8oAAAA5cpbDNk5rm0qDdq6nDWpqiazmTL4R%2Bv%2FI%2FSzcW1eAI71AkllpeDIKxQAAAAfYvObLT5lU2OeXpUvdjR%2B%2BLpotQ%3D%3D&messageId=d-4213A9B0-B%2C0%7CU%2C0%7CV%2C1%7CW%2C0&connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&tid=0'. 
 [21:48:05 PDT] SignalR: Raising the reconnect event 
 [21:48:35 PDT] SignalR: An error occurred using longPolling. Status = parsererror.  Response = undefined. 
 [21:48:38 PDT] SignalR: Opening long polling request to 'http://localhost:8889/signalr/reconnect?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAAIkua2h4902EBFsaUr1NkAAAAAACAAAAAAADZgAAwAAAABAAAADId6sPY7u1b7U4MSyyjEGgAAAAAASAAACgAAAAEAAAAPbquY3AwSaeBDURBcXbiv8oAAAA5cpbDNk5rm0qDdq6nDWpqiazmTL4R%2Bv%2FI%2FSzcW1eAI71AkllpeDIKxQAAAAfYvObLT5lU2OeXpUvdjR%2B%2BLpotQ%3D%3D&messageId=d-4213A9B0-B%2C0%7CU%2C0%7CV%2C1%7CW%2C0&connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&tid=1'. 
 [21:48:41 PDT] SignalR: Raising the reconnect event 
 [21:49:08 PDT] SignalR: An error occurred using longPolling. Status = parsererror.  Response = undefined. 
 [21:49:11 PDT] SignalR: Opening long polling request to 'http://localhost:8889/signalr/reconnect?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAAIkua2h4902EBFsaUr1NkAAAAAACAAAAAAADZgAAwAAAABAAAADId6sPY7u1b7U4MSyyjEGgAAAAAASAAACgAAAAEAAAAPbquY3AwSaeBDURBcXbiv8oAAAA5cpbDNk5rm0qDdq6nDWpqiazmTL4R%2Bv%2FI%2FSzcW1eAI71AkllpeDIKxQAAAAfYvObLT5lU2OeXpUvdjR%2B%2BLpotQ%3D%3D&messageId=d-4213A9B0-B%2C0%7CU%2C0%7CV%2C1%7CW%2C0&connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&tid=7'. 
 [21:49:18 PDT] SignalR: Raising the reconnect event 
 [21:49:42 PDT] SignalR: An error occurred using longPolling. Status = parsererror.  Response = undefined. 
 [21:49:45 PDT] SignalR: Opening long polling request to 'http://localhost:8889/signalr/reconnect?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAAIkua2h4902EBFsaUr1NkAAAAAACAAAAAAADZgAAwAAAABAAAADId6sPY7u1b7U4MSyyjEGgAAAAAASAAACgAAAAEAAAAPbquY3AwSaeBDURBcXbiv8oAAAA5cpbDNk5rm0qDdq6nDWpqiazmTL4R%2Bv%2FI%2FSzcW1eAI71AkllpeDIKxQAAAAfYvObLT5lU2OeXpUvdjR%2B%2BLpotQ%3D%3D&messageId=d-4213A9B0-B%2C0%7CU%2C0%7CV%2C1%7CW%2C0&connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&tid=9'. 
 [21:50:00 PDT] SignalR: Raising the reconnect event 
 [21:50:15 PDT] SignalR: An error occurred using longPolling. Status = parsererror.  Response = undefined. 
 [21:50:18 PDT] SignalR: Opening long polling request to 'http://localhost:8889/signalr/reconnect?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAAIkua2h4902EBFsaUr1NkAAAAAACAAAAAAADZgAAwAAAABAAAADId6sPY7u1b7U4MSyyjEGgAAAAAASAAACgAAAAEAAAAPbquY3AwSaeBDURBcXbiv8oAAAA5cpbDNk5rm0qDdq6nDWpqiazmTL4R%2Bv%2FI%2FSzcW1eAI71AkllpeDIKxQAAAAfYvObLT5lU2OeXpUvdjR%2B%2BLpotQ%3D%3D&messageId=d-4213A9B0-B%2C0%7CU%2C0%7CV%2C1%7CW%2C0&connectionData=%5B%7B%22name%22%3A%22selfieserver%22%7D%5D&tid=8'. 
 [21:50:45 PDT] SignalR: Couldn't reconnect within the configured timeout (30000ms), disconnecting. 
 [21:50:45 PDT] SignalR: Stopping connection. 
 [21:50:45 PDT] SignalR: Aborted xhr requst.

您可以看到错误不断发生，客户端会一直重新连接，直到重新连接失败。

作为奖励，我创建了一个repro应用程序，您可以从skydrive下载here

如果有人对我的问题有所了解，或者可以直截了当地指出我，那将会成为我的一天。

[UPDATE] 在尝试通过包含的源代码重现的5个开发中，零已经能够重现。

我假设此时我的问题特定于我的机器（呃？）。有了这个假设，什么环境因素可能导致signalr / poll？transport = longPolling请求“中止”？

2 个答案:

答案 0 :(得分：0)

这可能会对您有所帮助：

https://github.com/SignalR/SignalR/issues/1557

请注意作者的评论： “这不是一个错误。这是我们选择的预期设计。将其改为建议。”

答案 1 :(得分：0)

您是否以管理员身份运行Visual Studio？它可能与权限和Owin有关。

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