send method
Send a message
to the ROS node
Implementation
bool send(dynamic message) {
// If we're not connected give up.
if (status != Status.connected) return false;
// Format the message into JSON and then stringify.
final toSend = (message is Request)
? json.encode(message.toJson())
: (message is Map || message is List)
? json.encode(message)
: message;
//print('OUTGOING: $toSend');
// Actually send it to the node.
_channel.sink.add(toSend);
return true;
}