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 SignalRException(
          message: "Invalid message type.",
          type: SignalRExceptionType.invalidPayload);
  }
}