Test if upgrade response is successful. !(p) Merely notes if the response was sent as a WebSocket Upgrade, or was failed (resulting in no upgrade handshake)
@return true if upgrade response was generated, false if no upgrade response was generated
See Implementation
Test if upgrade response is successful. !(p) Merely notes if the response was sent as a WebSocket Upgrade, or was failed (resulting in no upgrade handshake)
@return true if upgrade response was generated, false if no upgrade response was generated