Some implementation notes: There is an included flash object (web-socket-js) that is used to emulate websocket support on browsers without websocket support (currently only Chrome has WebSocket support). Javascript doesn't have a bytearray type, so what you get out of a WebSocket object is just Javascript strings. Javascript has UTF-16 unicode strings and anything sent through the WebSocket gets converted to UTF-8 and vice-versa. So, one additional (and necessary) function of wsproxy is base64 encoding/decoding what is sent to/from the browser. Building web-socket-js emulator: cd include/web-socket-js/flash-src mxmlc -static-link-runtime-shared-libraries WebSocketMain.as