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SignalR Default Transport Signal Reserve

In the case of the SignalR client using .Net Framework 4.0 to connect to the server (therefore, support for the WebSockets transport is not supported) the next backup transport?

In addition, if there is a backup chain, it would be great to know this.

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From https://docs.microsoft.com/en-us/aspnet/signalr/overview/getting-started/introduction-to-signalr#transports-and-fallbacks the following if WebSockets is not available:

  • Server-sent events, also known as EventSource (if the browser supports events sent by the server, these are basically all browsers except Internet Explorer.)
  • Forever Frame ( Internet Explorer). Forever Frame IFrame, , . script , , . HTML, , .
  • Ajax . , , , , , . .

: : http://www.asp.net/signalr/overview/signalr-20/getting-started-with-signalr-20/introduction-to-signalr

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