/*
* Establish a websocket-like client connection to the API of 'uri' and if successful
* instantiate a client afb_proto_ws websocket for this API using 'itf' and 'closure'.
/*
* Establish a websocket-like client connection to the API of 'uri' and if successful
* instantiate a client afb_proto_ws websocket for this API using 'itf' and 'closure'.