No way to pass Origin in sync client

[EnTerr]

I see there are some provisions for Origin header in https://github.com/lipp/lua-websockets/blob/master/src/websocket/handshake.lua#L54

However i could not find a way to supply origin for sync connect()? client_ev.lua does it because it has ws at hand

lua-websockets/src/websocket/client_ev.lua

Line 144 in 61cca37

 origin = ws.origin, 

- but how am i supposed to do that for sync.lua?

I 'hacked' my way by adding extra argument to connect() and then extending the table
https://github.com/lipp/lua-websockets/blob/master/src/websocket/sync.lua#L149

But not at all sure that's the way - isn't there something more elegant?