Get the WebSocket Protocol Version <p> As of <a href="http://tools.ietf.org/html/rfc6455#section-11.6">RFC6455</a>, Hunt only supports version <code>13</code>
@return the WebSocket protocol version
See Implementation
Get the WebSocket Protocol Version <p> As of <a href="http://tools.ietf.org/html/rfc6455#section-11.6">RFC6455</a>, Hunt only supports version <code>13</code>
@return the WebSocket protocol version