跨域不适用于signalr 2.0

Question

我有一个信号服务器2.0服务器应该服务于多个域..因此需要在我的服务器中启用CORS.我将iis7.5用作Web服务器.我在Startup我的项目方法中启用了CORS,如下所示

 public void Configuration(IAppBuilder app)
        {
        app.Map("/signalr", map =>
            {
                // Setup the CORS middleware to run before SignalR.
                // By default this will allow all origins. You can 
                // configure the set of origins and/or http verbs by
                // providing a cors options with a different policy.
                map.UseCors(CorsOptions.AllowAll);
                var hubConfiguration = new HubConfiguration
                {
                    // You can enable JSONP by uncommenting line below.
                    // JSONP requests are insecure but some older browsers (and some
                    // versions of IE) require JSONP to work cross domain
                    // EnableJSONP = true
                };
                // Run the SignalR pipeline. We're not using MapSignalR
                // since this branch already runs under the "/signalr"
                // path.
                map.RunSignalR(hubConfiguration);
}
}

此代码复制并粘贴在本文 http://www.asp.net/signalr/overview/signalr-20/hubs-api/hubs-api-guide-javascript-client

我创建了一个localhost项目并尝试连接到signalr服务器.

但我在Firefox中遇到以下错误

阻止跨源请求:http://MyWebSite.com:8082/signalr/negotiate?connectionData=%5B%7B%22name%22%3A%22sahragostarhub%22%7D%5D&clientProtocol=1.3&_=1405622027746同源策略禁止读取远程资源. 可以通过将资源移动到同一域或启用CORS来解决此问题.谈判

并且 无法加载chrome XMLHttpRequest中的此错误http://MyWebSite.com:8082/signalr/negotiate?connectionData=%5B%7B%22name%22%3A%22sahragostarhub%22%7D%5D&clientProtocol=1.3&_=1405622032883.请求的资源上不存在"Access-Control-Allow-Origin"标头.因此,不允许访问Origin((我的客户端站点地址)'

我还将以下行添加到我的web.config中

 <httpProtocol>
      <customHeaders>
        <clear />
       <add name="Access-Control-Allow-Origin" value="*" />
      </customHeaders>
    </httpProtocol>

这种变化也没用.

Answer 1

尝试删除配置中的WebDAV模块(帮助我一段时间):

<configuration>              
    <system.webServer>                   
        <modules>
            <remove name="WebDAVModule" />
...