Unity Multiplayer Working Client Echo Server based on NetworkServer & NetworkClient + Questions

Questions:
1.) How do i tell the Send commands on what channel to send(for both Client and Server)?
2.) On the client code, networkClient.Configure( connectionConfig, 1 ); I am curious why you have to assign a maximum connection here?
3.) Be it this is working code, is this code valid?



SERVER

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Networking;
3.  
4. using System;
5. using System.Linq;
6. using System.Collections;
7. using System.Collections.Generic;
8.  
9. public class MyMessage : MessageBase
10.     {
11.     public int messageInt;
12.     }
13.  
14. public class ManagerNetwork : NetworkBehaviour
15.     {
16.     public GameObject prefabPlayer;
17.  
18.     public const short  CustomHandlerID = 1000;
19.     public byte         ChannelUnreliable;
20.     public byte         ChannelReliableSequenced;
21.  
22.     private void Start( )
23.         {
24.         NetworkServer.RegisterHandler( MsgType.Connect,     OnClientConnect );
25.         NetworkServer.RegisterHandler( CustomHandlerID,     MessageFromClient );
26.  
27.         ConnectionConfig connectionConfig = new UnityEngine.Networking.ConnectionConfig( );
28.         connectionConfig.Channels.Clear( );
29.         ChannelReliableSequenced = connectionConfig.AddChannel( QosType.ReliableSequenced );
30.         ChannelUnreliable        = connectionConfig.AddChannel( QosType.Unreliable );
31.      
32.         NetworkServer.Configure( connectionConfig, 5 );
33.         NetworkServer.Listen( 22001 );
34.  
35.         Debug.Log( "NetworkServer.numChannels " + NetworkServer.numChannels );
36.         }
37.  
38.     private void OnClientConnect( NetworkMessage networkMessage )
39.         {
40.         Debug.Log( "OnClientConnect" );
41.      
42.         var msg = new MyMessage();
43.         msg.messageInt = 2456986;
44.         networkMessage.conn.Send( CustomHandlerID, msg );
45.         }
46.  
47.     private void MessageFromClient( NetworkMessage networkMessage )
48.         {
49.         var msg = networkMessage.ReadMessage<MyMessage>();
50.         Debug.Log( ">> "+msg.messageInt );
51.         }
52.  
53.     }

CLIENT

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Networking;
3. using System;
4. using System.Collections;
5. using System.Collections.Generic;
6.  
7. public class ManagerNetwork : NetworkBehaviour
8.     {
9.     private NetworkClient   networkClient;
10.     private string          serverIP;
11.     private int             serverPort;
12.  
13.     public const short      CustomHandlerID = 1000;
14.     public byte             ChannelUnreliable;
15.     public byte             ChannelReliableSequenced;
16.  
17.     public class MyMessage : MessageBase
18.         {
19.         public int messageInt;
20.         }
21.  
22.     private void Start( )
23.         {
24.         serverIP   = "127.0.0.1";
25.         serverPort = 22001;
26.  
27.         ConnectionConfig connectionConfig = new UnityEngine.Networking.ConnectionConfig( );
28.         connectionConfig.Channels.Clear( );
29.         ChannelReliableSequenced = connectionConfig.AddChannel( QosType.ReliableSequenced );
30.         ChannelUnreliable        = connectionConfig.AddChannel( QosType.Unreliable );
31.      
32.         networkClient = new NetworkClient();
33.         networkClient.RegisterHandler( MsgType.Connect, OnServerConnect );
34.         networkClient.RegisterHandler( CustomHandlerID, MessageFromServer );
35.         networkClient.Configure( connectionConfig, 1 );
36.         networkClient.Connect( serverIP, serverPort );
37.         }
38.  
39.     private void OnServerConnect( NetworkMessage networkMessage )
40.         {
41.         Debug.Log( "OnServerConnect" );
42.         }
43.  
44.     private void MessageFromServer( NetworkMessage networkMessage )
45.         {
46.         var msg = networkMessage.ReadMessage<MyMessage>();
47.         Debug.Log( ">> "+msg.messageInt );
48.      
49.         MyMessage msg2 = new MyMessage( );
50.         msg2.messageInt = 2;
51.         networkClient.Send( CustomHandlerID, msg2 );
52.         }
53.     }