on method

SocketServer on(
  1. String event,
  2. Function listener
)

Implementation

SocketServer on(String event, Function listener) {
  if (event == 'open' && listener is SocketOpenCallback) {
    _onOpen = listener;
  } else if (event == 'close' && listener is SocketCloseCallback) {
    _onClose = listener;
  } else if (event == 'error' && listener is SocketErrorCallback) {
    _onError = listener;
  } else if (event == 'message' && listener is SocketMessageCallback) {
    _onMessage = listener;
  }
  return this;
}