403 permission denied when the field "Origin: file://" is included in header

[chessweb01]

When the field "Origin: file://" is included in the header (see WebSocketsClient.cpp:469), my WebSocket server responds with 403 permission denied. Removing the origin field from the header fixes the issue.

[Links2004]

the Origin is designed to detect from which side the websocket is coming.
most server Implementation require it, best way will be to allow to configure it.