The HTTP version used for this Upgrade Request <p> As of <a href="http://tools.ietf.org/html/rfc6455">RFC6455 (December 2011)</a> this is always <code>HTTP/1.1</code>
@return the HTTP Version used
See Implementation
The HTTP version used for this Upgrade Request <p> As of <a href="http://tools.ietf.org/html/rfc6455">RFC6455 (December 2011)</a> this is always <code>HTTP/1.1</code>
@return the HTTP Version used