writeMessage method

@override Object writeMessage(HubMessageBase message)

Writes the specified HubMessage to a string or ArrayBuffer and returns it.

If transferFormat is 'Text', the result of this method will be a string, otherwise it will be an ArrayBuffer.

message The message to write. returns A string or ArrayBuffer containing the serialized representation of the message.

Implementation

@override
Object writeMessage(HubMessageBase message) {
  final messageType = message.type;
  switch (messageType) {
    case MessageType.Invocation:
      return _writeInvocation(message as InvocationMessage);
    case MessageType.StreamInvocation:
      return _writeStreamInvocation(message as StreamInvocationMessage);
    case MessageType.StreamItem:
      return _writeStreamItem(message as StreamItemMessage);
    case MessageType.Completion:
      return _writeCompletion(message as CompletionMessage);
    case MessageType.Ping:
      return _writePing();
    case MessageType.CancelInvocation:
      return _writeCancelInvocation(message as CancelInvocationMessage);
    default:
      throw GeneralError("Invalid message type.");
  }

  //throw GeneralError("Converting '${message.type}' is not implemented.");
}