NetworkAlienClient.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using HslCommunication.Core.IMessage;
namespace HslCommunication.Core.Net
{
/// <summary>
/// 异形客户端的基类，提供了基础的异形操作
/// </summary>
public class NetworkAlienClient : NetworkServerBase
{
#region Constructor
/// <summary>
/// 默认的无参构造方法
/// </summary>
public NetworkAlienClient( )
{
password = new byte[6];
alreadyLock = new SimpleHybirdLock( );
alreadyOnline = new List<AlienSession>( );
trustOnline = new List<string>( );
trustLock = new SimpleHybirdLock( );
ThreadCheckStart( );
}
#endregion
#region NetworkServerBase Override
/// <summary>
/// 当接收到了新的请求的时候执行的操作
/// </summary>
/// <param name="socket">异步对象</param>
/// <param name="endPoint">终结点</param>
protected override void ThreadPoolLogin( Socket socket, IPEndPoint endPoint )
{
// 注册包
// 0x48 0x73 0x6E 0x00 0x17 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x30 0x31 0x00 0x00 0x00 0x00 0x00 0x00 0xC0 0xA8 0x00 0x01 0x17 0x10
// +------------+ +--+ +--+ +----------------------------------------------------+ +---------------------------+ +-----------------+ +-------+
// + 固定消息头 +备用 长度 DTU码 12345678901 (唯一标识) 登录密码(不受信的排除) Ip:192.168.0.1 端口10000
// +------------+ +--+ +--+ +----------------------------------------------------+ +---------------------------+ +-----------------+
// 返回
// 0x48 0x73 0x6E 0x00 0x01 0x00
// +------------+ +--+ +--+ +--+
// 固定消息头 备用 长度 结果代码
// 结果代码
// 0x00: 登录成功
// 0x01: DTU重复登录
// 0x02: DTU禁止登录
// 0x03: 密码验证失败
OperateResult<byte[]> check = ReceiveByMessage( socket, 5000, new AlienMessage( ) );
if (!check.IsSuccess) return;
if (check.Content[4] != 0x17 || check.Content.Length != 0x1C)
{
socket?.Close( );
LogNet?.WriteWarn( ToString( ), "Length Check Failed" );
return;
}
// 密码验证
bool isPasswrodRight = true;
for (int i = 0; i < password.Length; i++)
{
if (check.Content[16 + i] != password[i])
{
isPasswrodRight = false;
break;
}
}
string dtu = Encoding.ASCII.GetString( check.Content, 5, 11 ).Trim( );
// 密码失败的情况
if (!isPasswrodRight)
{
OperateResult send = Send( socket, GetResponse( StatusPasswodWrong ) );
if (send.IsSuccess) socket?.Close( );
LogNet?.WriteWarn( ToString( ), "Login Password Wrong, Id:" + dtu );
return;
}
AlienSession session = new AlienSession( )
{
DTU = dtu,
Socket = socket,
};
// 检测是否禁止登录
if (!IsClientPermission( session ))
{
OperateResult send = Send( socket, GetResponse( StatusLoginForbidden ) );
if (send.IsSuccess) socket?.Close( );
LogNet?.WriteWarn( ToString( ), "Login Forbidden, Id:" + session.DTU );
return;
}
// 检测是否重复登录，不重复的话，也就是意味着登录成功了
if (IsClientOnline( session ))
{
OperateResult send = Send( socket, GetResponse( StatusLoginRepeat ) );
if (send.IsSuccess) socket?.Close( );
LogNet?.WriteWarn( ToString( ), "Login Repeat, Id:" + session.DTU );
return;
}
else
{
OperateResult send = Send( socket, GetResponse( StatusOk ) );
if (!send.IsSuccess) return;
}
// 触发上线消息
OnClientConnected?.Invoke( this, session );
}
#endregion
#region Client Event
/// <summary>
/// 当有服务器连接上来的时候触发
/// </summary>
public event Action<NetworkAlienClient, AlienSession> OnClientConnected = null;
#endregion
#region Private Method
/// <summary>
/// 获取返回的命令信息
/// </summary>
/// <param name="status">状态</param>
/// <returns>回发的指令信息</returns>
private byte[] GetResponse(byte status)
{
return new byte[]
{
0x48,0x73,0x6E,0x00,0x01,status
};
}
/// <summary>
/// 状态登录成功
/// </summary>
private const byte StatusOk = 0x00;
/// <summary>
/// 重复登录
/// </summary>
private const byte StatusLoginRepeat = 0x01;
/// <summary>
/// 禁止登录
/// </summary>
private const byte StatusLoginForbidden = 0x02;
/// <summary>
/// 密码错误
/// </summary>
private const byte StatusPasswodWrong = 0x03;
/// <summary>
/// 检测当前的DTU是否在线
/// </summary>
/// <param name="session"></param>
/// <returns></returns>
private bool IsClientOnline( AlienSession session )
{
bool result = false;
alreadyLock.Enter( );
for (int i = 0; i < alreadyOnline.Count; i++)
{
if (alreadyOnline[i].DTU == session.DTU)
{
result = true;
break;
}
}
if (!result)
{
alreadyOnline.Add( session );
}
alreadyLock.Leave( );
return result;
}
/// <summary>
/// 检测当前的dtu是否允许登录
/// </summary>
/// <param name="session"></param>
/// <returns></returns>
private bool IsClientPermission( AlienSession session )
{
bool result = false;
trustLock.Enter( );
if (trustOnline.Count == 0)
{
result = true;
}
else
{
for (int i = 0; i < trustOnline.Count; i++)
{
if (trustOnline[i] == session.DTU)
{
result = true;
break;
}
}
}
trustLock.Leave( );
return result;
}
#endregion
#region Public Method
/// <summary>
/// 设置密码，长度为6
/// </summary>
/// <param name="password"></param>
public void SetPassword(byte[] password)
{
if(password?.Length == 6)
{
password.CopyTo( this.password, 0 );
}
}
/// <summary>
/// 设置可信任的客户端列表
/// </summary>
/// <param name="clients"></param>
public void SetTrustClients(string[] clients)
{
trustLock.Enter( );
trustOnline = new List<string>( clients );
trustLock.Leave( );
}
/// <summary>
/// 退出异形客户端
/// </summary>
/// <param name="session">异形客户端的会话</param>
public void AlienSessionLoginOut( AlienSession session )
{
alreadyLock.Enter( );
alreadyOnline.Remove( session );
alreadyLock.Leave( );
}
#endregion
#region Thread Check Client
private void ThreadCheckStart()
{
threadCheck = new Thread(new ThreadStart( ThreadCheckAlienClient ));
threadCheck.IsBackground = true;
threadCheck.Priority = ThreadPriority.AboveNormal;
threadCheck.Start( );
}
private void ThreadCheckAlienClient( )
{
Thread.Sleep( 1000 );
while (true)
{
Thread.Sleep( 1000 );
alreadyLock.Enter( );
for (int i = alreadyOnline.Count - 1; i >= 0; i--)
{
if (!alreadyOnline[i].IsStatusOk)
{
alreadyOnline.RemoveAt( i );
}
}
alreadyLock.Leave( );
}
}
#endregion
#region Private Member
private byte[] password; // 密码设置
private List<AlienSession> alreadyOnline; // 所有在线信息
private SimpleHybirdLock alreadyLock; // 列表的同步锁
private List<string> trustOnline; // 禁止登录的客户端信息
private SimpleHybirdLock trustLock; // 禁止登录的锁
private Thread threadCheck; // 后台检测在线情况的
#endregion
#region Object Override
/// <summary>
/// 获取本对象的字符串表示形式
/// </summary>
/// <returns></returns>
public override string ToString( )
{
return "NetworkAlienBase";
}
#endregion
}
}