How to send simple values on local network?

After some more research, I was able to solve this by myself. Here is what I did, I think it is very slim and it works well:

 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.Networking;
 
 public class MyNetworkManager : MonoBehaviour
 {
 
     public bool isAtStartup = true;
 
     NetworkClient myClient;
     public const short MyDataMsgID = 815;
 
     public bool isServer = false;
     public bool isClient = false;
 
 
     class MyMsgType
     {
         public static short ID = 815;
     }
 
     class MyDataMsg : MessageBase
     {
         public Vector3 position;
         public float angle;
         public string message;
     }
 
 
     void Update()
     {
         if (isAtStartup)
         {
             if (Input.GetKeyDown(KeyCode.Alpha1))
             {
                 // Now this is the SERVER
                 SetupServer();
             }
 
             if (Input.GetKeyDown(KeyCode.Alpha2))
             {
                 // Now this is the CLIENT
                 SetupClient();
             }
 
             if (Input.GetKeyDown(KeyCode.Alpha3))
             {
                 // Now this is a SERVER and a Local CLIENT too
                 SetupServer();
                 SetupLocalClient();
             }
         }
         else
         {
             if (isClient)
             {
                 // Maybe add conditions on when to send message...
                 SendMyDataMessage();
             }
         }
     }
 
     // Create a server and listen on a port
     public void SetupServer()
     {
         NetworkServer.Listen(4444);
         NetworkServer.RegisterHandler(MyMsgType.ID, OnRecievingData);
         isAtStartup = false;
         isServer = true;
         isClient = false;
     }
 
     // Create a client and connect to the server port
     public void SetupClient()
     {
         myClient = new NetworkClient();
         myClient.RegisterHandler(MsgType.Connect, OnConnected);
         myClient.Connect("127.0.0.1", 4444);
         isAtStartup = false;
         isClient = true;
         isServer = false;
     }
 
     // Create a local client and connect to the local server
     public void SetupLocalClient()
     {
         myClient = ClientScene.ConnectLocalServer();
         myClient.RegisterHandler(MsgType.Connect, OnConnected);
         isAtStartup = false;
     }
 
 
     // What the CLIENT should do when connected
     public void OnConnected(NetworkMessage netMsg)
     {
         Debug.Log("Connected to server");
     }
 
     // Call this with the CLIENT to send a message
     public void SendMyDataMessage()
     {
         var msg = new MyDataMsg();
         msg.position = new Vector3(0.0f,0.0f,0.0f);
         msg.angle = -21.74f;
         msg.message = "lets hope this comes through";
 
         myClient.Send(MyMsgType.ID, msg);
     }
 
     // What the SERVCER should do when getting a message
     public void OnRecievingData(NetworkMessage netMsg)
     {
         MyDataMsg myMsg = netMsg.ReadMessage<MyDataMsg>();
 
         // use the values from the message here
         Debug.Log("position: " + myMsg.position);
         Debug.Log("angle: " + myMsg.angle);
         Debug.Log("message: " + myMsg.message);
     }
 }