我创建了一个新的VS 2013项目，并查看默认的。使用Firefox浏览器打开aspx页面。当我检查网络调用时，我看到它不断调用:

http://localhost:50682/6a663a78019845d5ade4a328cad09cc2/arterySignalR/poll?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAOBmDwPWa2ky2MAZXFHBMVAAAAAACAAAAAAAQZgAAAAEAACAAAADSADQXBVKiKczflJ0OzUjOLduFTJE4zd%2FLHWGpDfXnuAAAAAAOgAAAAAIAACAAAACyEX81VwilygfphPoEKCYQ6ZwrkzExoKfZzEMkqBKqqzAAAADG%2BDJbrEFOfsNm9OKhqacnGseQvrwy5kmyZnI5YJiZbjYFgzMELXHfwA7Sxjj4osJAAAAAvQvoG4N0nn8eB9FRaJaZyqaUDF%2F9ypvGN%2B%2BVefnx8U1Fq6P9HXO9vEC%2BfA2s8R4jik58rD4IcFMjM4P8l5kv6g%3D%3D&messageId=d-F1180A0E-W%2C0%7Cl%2C4%7Cm%2C0&requestUrl=http%3A%2F%2Flocalhost%3A50656%2Fdefaulttest&browserName=Firefox&tid=4&_=1384207744328

为什么会这样? 我如何阻止这些电话? 我看到每6秒就有无数个对上述URL的调用。 请帮助我理解并解决这个问题。