The type or namespace 'NetworkClient' could not be found

I'm making a multiplayer game and I just copy/pasted the example here: https://docs.unity3d.com/Manual/UNetClientServer.html

but NetworkClient, NetworkServer, ClientScene, and some others are all either "not found" or "do not exist in the current context"

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.Networking;
5.  
6.  
7. public class NetworkManager : MonoBehaviour
8. {
9.     public bool isAtStartup = true;
10.     NetworkClient myClient;
11.     void Update()
12.     {
13.         if (isAtStartup)
14.         {
15.             if (Input.GetKeyDown(KeyCode.S))
16.             {
17.                 SetupServer();
18.             }
19.             if (Input.GetKeyDown(KeyCode.C))
20.             {
21.                 SetupClient();
22.             }
23.             if (Input.GetKeyDown(KeyCode.B))
24.             {
25.                 SetupServer();
26.                 SetupLocalClient();
27.             }
28.         }
29.     }
30.     void OnGUI()
31.     {
32.         if (isAtStartup)
33.         {
34.             GUI.Label(new Rect(2, 10, 150, 100), "Press S for server");
35.             GUI.Label(new Rect(2, 30, 150, 100), "Press B for both");
36.             GUI.Label(new Rect(2, 50, 150, 100), "Press C for client");
37.         }
38.     }
39.  
40.  
41.     public void SetupServer()
42.     {
43.         NetworkServer.Listen(4444);
44.         isAtStartup = false;
45.     }
46.  
47.     // Create a client and connect to the server port
48.     public void SetupClient()
49.     {
50.         myClient = new NetworkClient();
51.         myClient.RegisterHandler(MsgType.Connect, OnConnected);
52.         myClient.Connect("127.0.0.1", 4444);
53.         isAtStartup = false;
54.     }
55.  
56.     // Create a local client and connect to the local server
57.     public void SetupLocalClient()
58.     {
59.         myClient = ClientScene.ConnectLocalServer();
60.         myClient.RegisterHandler(MsgType.Connect, OnConnected);
61.         isAtStartup = false;
62.     }
63.  
64.     public void OnConnected(NetworkMessage netMsg)
65.     {
66.         Debug.Log("Connected to server");
67.     }
68. }

 

This may be due to being deprecated and now removed from Unity.
Check the deprecation thread.

Mirror seems to be a capable replacement and easy migration.

 

Mirror?

 

This ^^^

The original Unet HLAPI was removed from the editor and was moved to a package for those still wanting to use it after it was deprecated, and I believe it will become completely unusable starting with 2020.x unless they have changed their time frame.

 

https://github.com/vis2k/Mirror/ open source unet replacement