NetworkServerBase.cs
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using HslCommunication.Core.IMessage;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
namespace HslCommunication.Core.Net
{
/// <summary>
/// 服务器程序的基础类
/// </summary>
public class NetworkServerBase : NetworkXBase
{
#region Constructor
/// <summary>
/// 实例化一个默认的对象
/// </summary>
public NetworkServerBase()
{
IsStarted = false;
Port = 0;
}
#endregion
#region Public Properties
/// <summary>
/// 服务器引擎是否启动
/// </summary>
public bool IsStarted { get; protected set; }
/// <summary>
/// 服务器的端口号
/// </summary>
/// <remarks>需要在服务器启动之前设置为有效</remarks>
public int Port { get; set; }
#endregion
#region Protect Method
/// <summary>
/// 异步传入的连接申请请求
/// </summary>
/// <param name="iar">异步对象</param>
protected void AsyncAcceptCallback( IAsyncResult iar )
{
//还原传入的原始套接字
if (iar.AsyncState is Socket server_socket)
{
Socket client = null;
try
{
// 在原始套接字上调用EndAccept方法，返回新的套接字
client = server_socket.EndAccept( iar );
ThreadPool.QueueUserWorkItem( new WaitCallback( ThreadPoolLogin ), client );
}
catch (ObjectDisposedException)
{
// 服务器关闭时候触发的异常，不进行记录
return;
}
catch (Exception ex)
{
// 有可能刚连接上就断开了，那就不管
client?.Close( );
LogNet?.WriteException( ToString(), StringResources.Language.SocketAcceptCallbackException, ex );
}
// 如果失败，尝试启动三次
int i = 0;
while (i < 3)
{
try
{
server_socket.BeginAccept( new AsyncCallback( AsyncAcceptCallback ), server_socket );
break;
}
catch (Exception ex)
{
Thread.Sleep( 1000 );
LogNet?.WriteException( ToString( ), StringResources.Language.SocketReAcceptCallbackException, ex );
i++;
}
}
if (i >= 3)
{
LogNet?.WriteError( ToString( ), StringResources.Language.SocketReAcceptCallbackException );
// 抛出异常，终止应用程序
throw new Exception( StringResources.Language.SocketReAcceptCallbackException );
}
}
}
/// <summary>
/// 用于登录的回调方法
/// </summary>
/// <param name="obj">socket对象</param>
private void ThreadPoolLogin( object obj )
{
if (obj is Socket socket)
{
IPEndPoint endPoint = (IPEndPoint)socket.RemoteEndPoint;
OperateResult check = SocketAcceptExtraCheck( socket, endPoint );
if (!check.IsSuccess)
{
LogNet?.WriteDebug( ToString( ), check.Message );
socket?.Close( );
}
else
{
ThreadPoolLogin( socket, endPoint );
}
}
}
/// <summary>
/// 用于登录的回调方法
/// </summary>
/// <param name="socket">socket对象</param>
/// <param name="endPoint">远程的终结点</param>
protected virtual void ThreadPoolLogin( Socket socket, IPEndPoint endPoint )
{
socket?.Close( );
}
#endregion
#region Start And Close
/// <summary>
/// 当客户端的socket登录的时候额外检查的信息
/// </summary>
/// <param name="socket">套接字</param>
/// <param name="endPoint">终结点</param>
/// <returns>验证的结果</returns>
protected virtual OperateResult SocketAcceptExtraCheck( Socket socket, IPEndPoint endPoint )
{
return OperateResult.CreateSuccessResult( );
}
/// <summary>
/// 服务器启动时额外的初始化信息
/// </summary>
/// <remarks>需要在派生类中重写</remarks>
protected virtual void StartInitialization( )
{
}
/// <summary>
/// 启动服务器的引擎
/// </summary>
/// <param name="port">指定一个端口号</param>
public virtual void ServerStart( int port )
{
if (!IsStarted)
{
StartInitialization( );
CoreSocket = new Socket( AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp );
CoreSocket.Bind( new IPEndPoint( IPAddress.Any, port ) );
CoreSocket.Listen( 500 );//单次允许最后请求500个，足够小型系统应用了
CoreSocket.BeginAccept( new AsyncCallback( AsyncAcceptCallback ), CoreSocket );
IsStarted = true;
Port = port;
LogNet?.WriteNewLine( );
LogNet?.WriteInfo( ToString(), StringResources.Language.NetEngineStart );
}
}
/// <summary>
/// 使用已经配置好的端口启动服务器的引擎
/// </summary>
public void ServerStart( )
{
ServerStart( Port );
}
/// <summary>
/// 服务器关闭的时候需要做的事情
/// </summary>
protected virtual void CloseAction( )
{
}
/// <summary>
/// 关闭服务器的引擎
/// </summary>
public virtual void ServerClose( )
{
if (IsStarted)
{
CloseAction( );
CoreSocket?.Close( );
IsStarted = false;
LogNet?.WriteInfo( ToString(), StringResources.Language.NetEngineClose );
}
}
#endregion
#region Create Alien Connection
/**************************************************************************************************
*
* 此处实现了连接Hsl异形客户端的协议，特殊的协议实现定制请联系作者
* QQ群：592132877
*
*************************************************************************************************/
/// <summary>
/// 创建一个指定的异形客户端连接，使用Hsl协议来发送注册包
/// </summary>
/// <param name="ipAddress">Ip地址</param>
/// <param name="port">端口号</param>
/// <param name="dtuId">设备唯一ID号，最长11</param>
/// <returns>是否成功连接</returns>
public OperateResult ConnectHslAlientClient( string ipAddress, int port ,string dtuId)
{
if (dtuId.Length > 11) dtuId = dtuId.Substring( 11 );
byte[] sendBytes = new byte[28];
sendBytes[0] = 0x48;
sendBytes[1] = 0x73;
sendBytes[2] = 0x6E;
sendBytes[4] = 0x17;
Encoding.ASCII.GetBytes( dtuId ).CopyTo( sendBytes, 5 );
// 创建连接
OperateResult<Socket> connect = CreateSocketAndConnect( ipAddress, port, 10000 );
if (!connect.IsSuccess) return connect;
// 发送数据
OperateResult send = Send( connect.Content, sendBytes );
if (!send.IsSuccess) return send;
// 接收数据
OperateResult<byte[]> receive = ReceiveByMessage( connect.Content, 10000, new AlienMessage( ) );
if (!receive.IsSuccess) return receive;
switch (receive.Content[5])
{
case 0x01:
{
connect.Content?.Close( );
return new OperateResult( StringResources.Language.DeviceCurrentIsLoginRepeat );
}
case 0x02:
{
connect.Content?.Close( );
return new OperateResult( StringResources.Language.DeviceCurrentIsLoginForbidden );
}
case 0x03:
{
connect.Content?.Close( );
return new OperateResult( StringResources.Language.PasswordCheckFailed );
}
}
ThreadPoolLogin( connect.Content );
return OperateResult.CreateSuccessResult( );
}
#endregion
}
}