Question

我们有一个在http://localhost:8080本地运行的自托管SignalR服务器（Windows应用程序）。我们还有一个单独的网站，其页面通过集线器连接到自托管SignalR服务器。当网站托管在我的本地计算机上时，客户端就可以很好地连接到SignalR服务器。只要将网站部署到Azure服务器，客户端页面就不再连接到本地SignalR服务器。

我们正在使用SignalR版本2.1.1和JQuery 2.1.1。

奇怪的是，问题只发生在IE中（我们使用的是版本11）。当本地托管具有客户端的网站时，IE将正常工作，但当网站托管在云中时，IE将无法工作。使用Chrome（最新版本）时，无论网站托管在何处，客户端都将进行连接。

起初我认为这只是一个CORS问题，所以我研究了我能找到的所有内容，并尝试了这里推荐的所有内容以及其他地方，但无济于事。

这是IE控制台日志（来自$ .connection.hub.logging = true），用于客户端页面在Azure中托管的情况（客户端不会连接）：

HTML1300: Navigation occurred.
File: comlinktestharness.html
[16:18:03 GMT-0500 (Central Daylight Time)] SignalR: Auto detected cross domain url.
[16:18:03 GMT-0500 (Central Daylight Time)] SignalR: Client subscribed to hub 'comlinkhub'.
[16:18:03 GMT-0500 (Central Daylight Time)] SignalR: Negotiating with 'http://localhost:8080/signalr/negotiate?clientProtocol=1.4&connectionData=%5B%7B%22name%22%3A%22comlinkhub%22%7D%5D'.
[16:18:03 GMT-0500 (Central Daylight Time)] SignalR: Stopping connection.

这是相应的Fiddler追踪：

GET http://mysite.azurewebsites.net/testharness/comlinktestharness.html
200 OK (text/html)
GET http://mysite.azurewebsites.net/Scripts/jquery-2.1.1.min.js
200 OK (application/x-javascript)
GET http://mysite.azurewebsites.net/Scripts/jquery.signalR-2.1.1.min.js
200 OK (application/x-javascript)
GET http://localhost:8080/signalr/hubs
200 OK (application/javascript)

如您所见，IE客户端尝试协商，但连接已停止。没有错误返回给客户端，并且Hub管道中没有抛出任何错误（我已在SignalR服务器上启用了错误记录和跟踪）。

以下是适用场景的IE控制台日志（当客户端网站在本地托管时）：

[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: Auto detected cross domain url.
[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: Client subscribed to hub 'comlinkhub'.
[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: Negotiating with 'http://localhost:8080/signalr/negotiate?clientProtocol=1.4&connectionData=%5B%7B%22name%22%3A%22comlinkhub%22%7D%5D'.
[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: Connecting to websocket endpoint 'ws://localhost:8080/signalr/connect?transport=webSockets&clientProtocol=1.4&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAL6z3nwT%2FfU%2BsVLkmYFEbFAAAAAACAAAAAAAQZgAAAAEAACAAAABBbno6Hw%2FRMgCwrkTmBB0yFdPD1pbLdlxqybV%2FIaio8QAAAAAOgAAAAAIAACAAAAC%2BS5tItVzar1XbLz2znCKXNaCnrW%2FdOYCPjFFV0HcUgDAAAACwab%2F5nGEG6iOLb2yGa8wXdQw%2Bl7T1dF60mArUv9GveCf7PpDJ6eHjlrPh3ePuRKdAAAAAkOqGRkWggu1zFBjUOXjHfW0St8EJ3EL%2B4lKNhLjFMnzh5ER48ZkaF42XN0HN3idX8834Xbp5RlFJy6ljE0npuA%3D%3D&connectionData=%5B%7B%22name%22%3A%22comlinkhub%22%7D%5D&tid=10'.
[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: Websocket opened.
[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: webSockets transport selected. Initiating start request.
[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: The start request succeeded. Transitioning to the connected state.
[16:51:12 GMT-0500 (Central Daylight Time)] SignalR: Now monitoring keep alive with a warning timeout of 13333.333333333332 and a connection lost timeout of 20000.

以下是成功方案的相应Fiddler跟踪：

POST http://localhost:8080/signalr/abort?transport=webSockets&clientProtocol=1.4&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAL6z3nwT%2FfU%2BsVLkmYFEbFAAAAAACAAAAAAAQZgAAAAEAACAAAADwU6H8SJ5n8MePxQmgfQrUbS55oh8ENsX0QPGOufSSUQAAAAAOgAAAAAIAACAAAAC6hHjHaQhxYWGrx5US2q%2FWVIcB34cfcHf0xEX1mY6AqzAAAABatf%2ByMhKKTc%2FLtakiTcuw5XIeAGczBVKQTcXHcRxNJ5my4DR9ec%2BkyBhh0us6Ql5AAAAAkZ18xiOkPzVingDTOcGOXVZziJcSUXfTYn03zIUnbuYAPj8TS5LD3LZ9s9eT4vqNwRFrQ2orA8k3dTtw5NJK%2BQ%3D%3D&connectionData=%5B%7B%22name%22%3A%22comlinkhub%22%7D%5D
200 OK ()
GET http://localhost:54792/TestHarness/ComLinkTestHarness.html
200 OK (text/html)
GET http://localhost:54792/Scripts/jquery-2.1.1.min.js
200 OK (application/javascript)
GET http://localhost:8080/signalr/hubs
200 OK (application/javascript)
GET http://localhost:54792/Scripts/jquery.signalR-2.1.1.min.js
200 OK (application/javascript)
GET http://localhost:54792/favicon.ico
200 OK (image/x-icon)
GET http://localhost:8080/signalr/negotiate?clientProtocol=1.4&connectionData=%5B%7B%22name%22%3A%22comlinkhub%22%7D%5D&_=1407448272112
200 OK (application/json)
CONNECT http://localhost:8080
200 Connection Established ()
GET http://localhost:8080/signalr/connect?transport=webSockets&clientProtocol=1.4&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAL6z3nwT%2FfU%2BsVLkmYFEbFAAAAAACAAAAAAAQZgAAAAEAACAAAABBbno6Hw%2FRMgCwrkTmBB0yFdPD1pbLdlxqybV%2FIaio8QAAAAAOgAAAAAIAACAAAAC%2BS5tItVzar1XbLz2znCKXNaCnrW%2FdOYCPjFFV0HcUgDAAAACwab%2F5nGEG6iOLb2yGa8wXdQw%2Bl7T1dF60mArUv9GveCf7PpDJ6eHjlrPh3ePuRKdAAAAAkOqGRkWggu1zFBjUOXjHfW0St8EJ3EL%2B4lKNhLjFMnzh5ER48ZkaF42XN0HN3idX8834Xbp5RlFJy6ljE0npuA%3D%3D&connectionData=%5B%7B%22name%22%3A%22comlinkhub%22%7D%5D&tid=10
101 Switching Protocols ()
GET http://localhost:8080/signalr/start?transport=webSockets&clientProtocol=1.4&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAL6z3nwT%2FfU%2BsVLkmYFEbFAAAAAACAAAAAAAQZgAAAAEAACAAAABBbno6Hw%2FRMgCwrkTmBB0yFdPD1pbLdlxqybV%2FIaio8QAAAAAOgAAAAAIAACAAAAC%2BS5tItVzar1XbLz2znCKXNaCnrW%2FdOYCPjFFV0HcUgDAAAACwab%2F5nGEG6iOLb2yGa8wXdQw%2Bl7T1dF60mArUv9GveCf7PpDJ6eHjlrPh3ePuRKdAAAAAkOqGRkWggu1zFBjUOXjHfW0St8EJ3EL%2B4lKNhLjFMnzh5ER48ZkaF42XN0HN3idX8834Xbp5RlFJy6ljE0npuA%3D%3D&connectionData=%5B%7B%22name%22%3A%22comlinkhub%22%7D%5D&_=1407448272113
200 OK (application/json)

正如我之前提到的，这只是IE中的一个问题......无论客户网站的托管位置如何，Chrome都能正常运作。

以下是SignalR服务器的启动和集线器代码：

public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        GlobalHost.HubPipeline.AddModule(new ErrorHandlingPipelineModule());
        app.Map("/signalr", map =>
        {
            map.UseCors(CorsOptions.AllowAll);
            var hubConfiguration = new HubConfiguration
            {
            };
            map.RunSignalR(hubConfiguration);
        });
    }
}

public class ComLinkHub : Hub
{
    public void SendEid(string eid)
    {
        Clients.All.eidChanged(eid);
    }
}

最后，这是客户端网页的代码：

$(function () {
    $.connection.hub.url = "http://localhost:8080/signalr";

    var chat = $.connection.comLinkHub;

    chat.client.eidChanged = function (message) {
        // Handle server message
    };

    $.connection.hub.logging = true;

    $.connection.hub.start().done(function () {
        // Do something
    });
});

任何人都可以告诉我为什么这在Chrome中运行但在IE 11中不起作用？我在这个问题上绞尽脑汁，无法找到解决方案。任何帮助将不胜感激！

由于

Answer 1

经过进一步的研究，我遇到了这个article，这让我找到了解决方案。修复是选择

设置 - >互联网选项 - ＆gt;安全性 - >本地内部网 - ＆gt;网站

并取消选中＆＃34;包括未在其他区域中列出的所有本地（内部网）网站＆＃34;。

使用Internet Explorer 11时，客户端将无法连接到本地自托管SignalR服务器

1 个答案: