JavaScript Check to see if WebSocket is hixie client-side?

According to Wikipedia most browsers use RFC6455 or a slightly earlier version with an almost identical handshake. The server I'm using only supports RFC6455 or similar, where it accepts Origin: or Sec-WebSocket-Origin: depending on the specified version.

Safari 5 and iOS 5 uses the hixie version of WebSocket. I normally fall back to long-polling if WebSocket is missing. Safari 5 has a WebSocket object, but the handshake is vastly different.

Is there any way to detect if WebSocket is hixie, or belongs to Safari 5, so I can ignore it without trying the handshake? Are there any ways of checking if the browser is Safari 5 without relying on the user agent?

Answer:1

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