SignalR长轮询在5秒内断开 [英] SignalR long-polling is disconnected in 5 seconds

问题描述

我的应用程序工作在企业网络（丑陋的代理和东西）。它并不能很好地工作。我希望使用https会帮助，但事实并非如此。这是一个奇怪的图案我在日志中看到：

My application is working under corporate network (ugly proxies and stuff). And it does not work very well. I hoped using https would help but it did not. Here is a weird pattern I see in the logs:

[14:13:32 GMT+0600 (N. Central Asia Standard Time)] SignalR: Client subscribed to hub 'modemshub'.
[14:13:32 GMT+0600 (N. Central Asia Standard Time)] SignalR: Negotiating with '/signalr/negotiate?clientProtocol=1.5&connectionToken=6aktO0sramoQKhQ9DC7Cs7EbXMUou8LooQRxfup4R0oZCHpBmWBFjyLup%2F3wJLloR8GtJEiUk10YOZJBaSqN8aiGAfXRR4G9hujTFTyiJiz%2FyJ4oMlBIdxqeCc5anI6k&connectionData=%5B%7B%22name%22%3A%22modemshub%22%7D%5D'.
[14:13:32 GMT+0600 (N. Central Asia Standard Time)] SignalR: longPolling transport starting.
[14:13:32 GMT+0600 (N. Central Asia Standard Time)] SignalR: Opening long polling request to 'https://example.com/signalr/connect?transport=longPolling&clientProt…rlCzGHl5kVLClT5ex8&connectionData=%5B%7B%22name%22%3A%22modemshub%22%7D%5D'.
[14:13:33 GMT+0600 (N. Central Asia Standard Time)] SignalR: Long poll complete.
[14:13:33 GMT+0600 (N. Central Asia Standard Time)] SignalR: LongPolling connected.
[14:13:33 GMT+0600 (N. Central Asia Standard Time)] SignalR: longPolling transport connected. Initiating start request.
[14:13:33 GMT+0600 (N. Central Asia Standard Time)] SignalR: Opening long polling request to 'https://example.com/signalr/poll?transport=longPolling&clientProtoco…rlCzGHl5kVLClT5ex8&connectionData=%5B%7B%22name%22%3A%22modemshub%22%7D%5D'.
[14:13:33 GMT+0600 (N. Central Asia Standard Time)] SignalR: The start request succeeded. Transitioning to the connected state.
[14:13:38 GMT+0600 (N. Central Asia Standard Time)] SignalR: Long poll complete.
[14:13:38 GMT+0600 (N. Central Asia Standard Time)] SignalR: Stopping connection.
[14:13:38 GMT+0600 (N. Central Asia Standard Time)] SignalR: Fired ajax abort async = true.

因此​​，在建立连接和5秒后，它被中止（而ConnectionTimeout等于110秒）。而这种模式被一再重复。这只是奇怪。

So the connection is established and 5 seconds later it is aborted (while ConnectionTimeout equals to 110 seconds). And this pattern is repeated again and again. That's just weird.

推荐答案

好像这种行为是由一个错误，在SignalR 2.1引起的。有一个类似的错误报告： https://github.com/SignalR/SignalR/issues/3557 < /一>因此，我们下调SignalR到2.0.3和这种行为消失了。

Seems like this behaviour is caused by a bug in SignalR 2.1. There was a similar bug reported: https://github.com/SignalR/SignalR/issues/3557 So we downgraded SignalR to 2.0.3 and this behaviour disappeared.

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