/// <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);
}
/// <summary>
/// 使用指定的套接字创建异形客户端
/// </summary>
/// <param name="session">异形客户端对象，查看<seealso cref="NetworkAlienClient"/>类型创建的客户端</param>
/// <returns>通常都为成功</returns>
/// <example>
/// 简单的创建示例。
/// <code lang="cs" source="Communication_Net45.Test\Documentation\Samples\Core\NetworkDoubleBase.cs" region="AlienConnect1" title="连接设备" />
/// 如果想知道是否创建成功。通常都是成功。
/// <code lang="cs" source="Communication_Net45.Test\Documentation\Samples\Core\NetworkDoubleBase.cs" region="AlienConnect2" title="判断连接结果" />
/// </example>
/// <remarks>
/// 不能和之前的长连接和短连接混用，详细参考 Demo程序
/// </remarks>
public OperateResult ConnectServer(AlienSession session)
{
isPersistentConn = true;
isUseSpecifiedSocket = true;
if (session != null)
{
AlienSession?.Socket?.Close();
if (string.IsNullOrEmpty(ConnectionId))
{
ConnectionId = session.DTU;
}
if (ConnectionId == session.DTU)
{
CoreSocket = session.Socket;
IsSocketError = false;
AlienSession = session;
return(InitializationOnConnect(session.Socket));
}
else
{
IsSocketError = true;
return(new OperateResult());
}
}
else
{
IsSocketError = true;
return(new OperateResult());
}
}
/// <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( );
}
/// <summary>
/// 登录的回调方法
/// </summary>
/// <param name="obj">传入的异步对象</param>
protected override void ThreadPoolLogin(object obj)
{
if (obj is Socket socket)
{
// 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);
}
}