No way to set additional headers for websocket connection

QtWebSocket does not have API to set header fields for connection. This can be used for authorization and other things. RFC6455 has this:

12. The request MAY include any other header fields, for example,
cookies [RFC6265] and/or authentication-related header fields
such as the |Authorization| header field [RFC2616], which are
processed according to documents that define them.

http://tools.ietf.org/html/rfc6455