Function sc_rpc_server::start_ws

pub fn start_ws<M: PubSubMetadata + From<Sender<String>>>(
    addr: &SocketAddr, 
    max_connections: Option<usize>, 
    cors: Option<&Vec<String>>, 
    io: RpcHandler<M>, 
    maybe_max_payload_mb: Option<usize>
) -> Result<Server>

Start WS server listening on given address.

Note: Only available if not(target_os = "unknown").