Setting up the game-server by C# socket

Input from the client and server returns the position

We're trying to set up the socket-server instead of using "Photon Engine", which the flexibility is much higher. In this week, I am trying to let the player sending input from the client-side and let the server to return the position of the player. This design could prevent player cheats through the client-side.

Client-side

PlayerController - a class which detect player's input and sending them to server

public class PlayerController : MonoBehaviour
{
    private void FixedUpdate()
    {
        SendInputToServer();
    }
    private void SendInputToServer() 
    {
        bool[] _inputs = new bool[]
        {
            Input.GetKey(KeyCode.W),
            Input.GetKey(KeyCode.A),
            Input.GetKey(KeyCode.S),
            Input.GetKey(KeyCode.D)
        };
        ClientSend.PlayerMovement(_inputs);
    }
}

ClientHandle.PlayerPosition - a function that receives the position from the server

public static void PlayerPosition(Packet _packet)
{
    int _id = _packet.ReadInt();
    Vector3 _position = _packet.ReadVector3();

    MainGame.players[_id].transform.position = _position;
}

ClientHandle.PlayerRotation - a function that receives the rotation of the character from the server

public static void PlayerRotation(Packet _packet)
{
    int _id = _packet.ReadInt();
    Quaternion _rotation = _packet.ReadQuaternion();

    MainGame.players[_id].transform.rotation = _rotation;
}

Server-side

ServerHandle.PlayerMovement - a function that receives the input from the client

public static void PlayerMovement(int _fromClient, Packet _packet) 
{
    bool[] _inputs = new bool[_packet.ReadInt()];
    for (int i = 0; i < _inputs.Length; i++)
    {
        _inputs[i] = _packet.ReadBool();
    }
    Quaternion _rotation = _packet.ReadQuaternion();

    Server.clients[_fromClient].player.SetInput(_inputs, _rotation);
}

Player class - a class handles the input sent from the client and return the latest position back to client

public void Update() 
{
    Vector2 _inputDirection = Vector2.Zero;
    if (inputs[0]) {
        _inputDirection.Y += 1;
    }
    if (inputs[1])
    {
        _inputDirection.Y -= 1;
    }
    if (inputs[2])
    {
        _inputDirection.X += 1;
    }
    if (inputs[3])
    {
        _inputDirection.X -= 1;
    }

    Move(_inputDirection);
}

private void Move(Vector2 _inputDirection)
{
    Vector3 _forward = Vector3.Transform(new Vector3(0, 0, 1), rotation);
    Vector3 _right = Vector3.Normalize(Vector3.Cross(_forward, new Vector3(0, 1, 0)));

    Vector3 _moveDirection = _right * _inputDirection.X + _forward * _inputDirection.Y;
    position += _moveDirection * moveSpeed;

    ServerSend.PlayerPosition(this);
    ServerSend.PlayerRotation(this);
}