/// <summary>
/// 发送指令到客户端。
/// </summary>
/// <param name="data"></param>
/// <param name="clientIP"></param>
protected bool SendOrderToClient(Msg data, string clientIP)
{
if (!string.IsNullOrEmpty(clientIP) && (data != null) && (this.ports != null))
{
return this.SendData(data, clientIP, this.ports.HostOrder);
}
return false;
}
/// <summary>
/// 接收客户端消息数据。
/// </summary>
/// <param name="data"></param>
protected virtual void ReceiveClientData(Msg data)
{
if (data == null) return;
this.RaiseChanged("监听:" + data.ToString());
switch (data.Kind)
{
case MSGKind.ClientClose://学生机下线。
{
ClientClose cc = data as ClientClose;
if (cc != null)
{
StudentEx student = Program.STUDENTS[cc.StudentID];
if (student != null)
{
if ((student.Status & StudentControl.EnumStudentState.Online) == StudentControl.EnumStudentState.Online)
{
student.Status &= ~StudentControl.EnumStudentState.Online;
}
student.Status |= StudentControl.EnumStudentState.Offline;
this.RaiseChanged(string.Format("学生机：({0}){1}[{2}] 关闭客户端！", student.MachineName, student.StudentName, student.IP));
this.OnUpdateControls(student);
}
}
}
break;
case MSGKind.ReqLogin://请求登录。
{
ReqLogin req = data as ReqLogin;
if (req != null)
{
this.RaiseChanged(string.Format("学生机IP：{0},{1:HH-mm-ss} 请求登录！", req.UIP, req.Time));
RespLogin resp = new RespLogin();
resp.Method = this.sci.LoginMethod;
resp.Students = this.sci.ClassInfo.Students;
resp.Catalog = this.sci.CatalogInfo;
resp.Time = DateTime.Now;
resp.UID = this.userInfo.UserID;
bool result = this.SendOrderToClient(resp, req.UIP);
this.RaiseChanged(string.Format("学生机IP：{0},{1:HH-mm-ss} 请求登录，{2}！", req.UIP, req.Time, result ? "成功" : "失败"));
}
}
break;
case MSGKind.Logining://开始登录。
{
StartLogin s = data as StartLogin;
if (s != null)
{
object o = STU_Login_Cache[s.UserAccount];
if (o == null)
{
STU_Login_Cache[s.UserAccount] = s.UserAccount;
this.VerifyLogin(s);
}
else
{
EndLogin end = new EndLogin();
end.UID = this.userInfo.UserID;
end.Time = DateTime.Now;
end.Result = false;
end.Error = string.Format("学生[{0}]正在登录中,请稍后...", s.UserAccount);
this.SendOrderToClient(end, s.UIP);
}
}
}
break;
}
}
/// <summary>
/// 发送消息。
/// </summary>
/// <param name="data"></param>
/// <param name="clientIP"></param>
/// <param name="port"></param>
/// <returns></returns>
public bool SendData(Msg data, string clientIP, int port)
{
lock (this)
{
bool result = false;
if (!string.IsNullOrEmpty(clientIP) && (data != null))
{
IPEndPoint remote = new IPEndPoint(IPAddress.Parse(clientIP), port);
byte[] buf = this.Serialize(data);
using (UdpClient udp = new UdpClient())
{
return udp.Send(buf, buf.Length, remote) > 0;
}
}
return result;
}
}
/// <summary>
/// 序列化消息。
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
protected byte[] Serialize(Msg data)
{
lock (this)
{
byte[] buf = null;
if (data != null)
{
using (MemoryStream ms = new MemoryStream())
{
this.binaryFormatter.Serialize(ms, data);
buf = ms.ToArray();
}
}
return buf;
}
}
/// <summary>
/// 发送数据。
/// </summary>
/// <param name="netWorkStream"></param>
/// <param name="data"></param>
/// <param name="message"></param>
protected virtual void SendData(NetworkStream netWorkStream, Msg data, string message)
{
if (netWorkStream != null && data != null)
{
byte[] buf = this.Serialize(data);
if (buf != null && buf.Length > 0)
{
netWorkStream.Write(buf, 0, buf.Length);
this.RaiseChanged(string.Format("{0}【{1}...】", data.Time, message));
}
}
}
/// <summary>
/// 用广播端口发送消息。
/// </summary>
/// <param name="data"></param>
/// <param name="ip"></param>
public bool SendBroadcastPortMSG(Msg data, string ip)
{
bool result = false;
if (data != null && !string.IsNullOrEmpty(ip))
{
data.Time = DateTime.Now;
result = this.hostListenService.SendData(data, ip, this.ports.HostBroadcast);
}
return result;
}