protected override void OnReceivedData(byte[] data, System.Net.IPEndPoint ep, UInt16 proxyId, bool isText)
{
UdpServerSession session = getSession(ep.Address.ToString(), ep.Port, proxyId);
if (session != null)
{
lock (session)
{
session.ReceivedBytes += (data == null ? 0 : data.Length);
session.ActiveTime = DateTime.Now;
session.LastReceiveTime = DateTime.Now;
}
OnReceivedData(new ReceivedDataEventArgs(data, session, isText));
session.RaiseReceivedData(data, isText);
}
else
{
UdpFrame frame = new UdpFrame(0, 0, 0, UdpCommand.UnConnected, null, proxyId);
SendFrame(frame, ep);
}
//修改主连接会话最后接收时间
session = getSession(ep.Address.ToString(), ep.Port, 0);
if (session != null)
{
lock (session)
{
session.ActiveTime = DateTime.Now;
}
}
}
public void CloseClient(EndPoint ep, UInt16 proxyId)
{
if (proxyId == 0)
{
List <UdpServerSession> sl = getSession(ep);
UdpServerSession mainSession = null;
sl.ForEach(s =>
{
if (s.ProxyID != 0)
{
CloseClient(s.Target, s.ProxyID);
}
else
{
mainSession = s;
}
});
if (mainSession != null)
{
RemoveSession(mainSession);
}
}
else
{
UdpServerSession session = getSession(ep, proxyId);
if (session != null)
{
RemoveSession(session);
}
}
}
protected virtual void OnClientClosed(UdpServerSession session)
{
UdpClientConnectedHandler h = ClientClosed;
if (h != null)
{
h(this, session);
}
}
private UdpServerSession getSession(string host, int port, UInt16 proxyId)
{
UdpServerSession session = null;
lock (clientList)
{
session = clientList.FirstOrDefault(x => x.Target.Host == host && x.Target.Port == port && x.ProxyID == proxyId);
}
return(session);
}
protected override void OnSendPackageError(UdpPackage package, EndPoint target, UInt16 proxyId)
{
UdpServerSession session = getSession(target, proxyId);
if (session != null)
{
lock (session)
{
session.ErrorBytes += (package.Data == null ? 0 : package.Data.Length);
}
}
base.OnSendPackageError(package, target, proxyId);
}
protected override void OnSendedPackage(UdpPackage package, EndPoint target, UInt16 proxyId)
{
UdpServerSession session = getSession(target, proxyId);
if (session != null)
{
lock (session)
{
session.SendedBytes += (package.Data == null ? 0 : package.Data.Length);
session.LastSendTime = DateTime.Now;
session.ActiveTime = DateTime.Now;
}
}
base.OnSendedPackage(package, target, proxyId);
}
protected override void SendData(byte[] data, EndPoint target, UInt16 proxyId)
{
UdpServerSession session = getSession(target, proxyId);
if (session != null)
{
try
{
//使用客户端连接自己的UdpClient发送数据
session.Client.SendData(data);
}
catch (SocketException e)
{
session.Client.IsConnected = false;
session.Close();
OnClientClosed(session);
}
}
}
private UdpServerSession getSession(EndPoint target, UInt16 proxyId)
{
string host = "";
int port = 0;
if (target is IPEndPoint)
{
IPEndPoint ip = target as IPEndPoint;
host = ip.Address.ToString();
port = ip.Port;
}
else if (target is DnsEndPoint)
{
DnsEndPoint dns = target as DnsEndPoint;
host = dns.Host;
port = dns.Port;
}
UdpServerSession session = getSession(host, port, proxyId);
return(session);
}
protected virtual void RemoveSession(UdpServerSession session)
{
UdpServerSession old = getSession(session.Target.Host, session.Target.Port, session.ProxyID);
if (old != null)
{
Logger.Trace("移除会话：{0} : {1} {2}", session.Target.Host, session.Target.Port, session.ProxyID);
if (old.ProxyID == 0)
{
RemoveCachePackage(new IPEndPoint(IPAddress.Parse(old.Target.Host), old.Target.Port));
}
old.Client.Close();
lock (clientList)
{
clientList.Remove(old);
}
RemoveSendQueue(session.Target, session.ProxyID);
OnClientClosed(session);
session.OnClosed();
}
}
protected override UdpFrame OnReceivedFrameData(byte[] data, System.Net.IPEndPoint ep)
{
if (data == null || data.Length < UdpFrame.HeadLength)
{
return(null);
}
UdpFrame frame = new UdpFrame(data);
if (frame.Command == UdpCommand.Connect)
{
RemoveCachePackage(ep);
ILogger l = LoggerManager.GetLogger(ep.Address.ToString() + "_" + ep.Port);
l.Trace("收到连接命令：{0}", ep.ToString());
//Logger.Trace("收到连接命令：{0}", ep.ToString());
//连接成功
UdpServerSession session = null;
bool isNew = false;
lock (clientList)
{
session = clientList.FirstOrDefault(x => x.Target.Host == ep.Address.ToString() && ep.Port == x.Target.Port && x.ProxyID == frame.ProxyID);
if (session == null)
{
session = SessionFactory.CreateSession(null, new DnsEndPoint(ep.Address.ToString(), ep.Port)) as UdpServerSession;
// session = new UdpServerSession();
session.StartTime = DateTime.Now;
session.ProxyID = frame.ProxyID;
//session.Target = new DnsEndPoint(ep.Address.ToString(), ep.Port);
session.Client = new UdpServerSocketProxy(this, Client, session);
session.StartTime = DateTime.Now;
session.ActiveTime = DateTime.Now;
clientList.Add(session);
isNew = true;
l.Trace("添加会话");
}
else
{
session.Client = null;
session.ProxyID = frame.ProxyID;
session.Target = new DnsEndPoint(ep.Address.ToString(), ep.Port);
session.Client = new UdpServerSocketProxy(this, Client, session);
session.Client.IsConnected = true;
l.Trace("更新会话");
}
if (isNew)
{
OnClientConnected(session);
}
}
UdpFrame ccFrame = new UdpFrame(0, 0, 0, UdpCommand.ConnectConfirm, null, frame.ProxyID);
SendFrame(ccFrame, session.Target);
return(null);
}
else if (frame.Command == UdpCommand.Close)
{
ILogger l = LoggerManager.GetLogger(ep.Address.ToString() + "_" + ep.Port);
UdpServerSession session = getSession(ep.Address.ToString(), ep.Port, frame.ProxyID);
if (session != null)
{
session.Client.IsConnected = false;
l.Trace("收到回话关闭命令：{0}", session.Target);
RemoveSession(session);
}
}
else if (frame.Command == UdpCommand.Pong)
{
List <UdpServerSession> sl = null;
lock (clientList)
{
sl = clientList.Where(x => x.Target.Host == ep.Address.ToString() && x.Target.Port == ep.Port).ToList();
}
sl.ForEach(s =>
{
s.ActiveTime = DateTime.Now;
s.LastReceiveTime = DateTime.Now;
});
//UdpServerSession session = getSession(ep.Address.ToString(), ep.Port, frame.ProxyID);
//if (session != null)
//{
// session.ActiveTime = DateTime.Now;
// session.LastReceiveTime = DateTime.Now;
//}
}
else if (frame.Command == UdpCommand.Ping)
{
//UdpServerSession session = getSession(ep.Address.ToString(), ep.Port, frame.ProxyID);
//if (session != null)
//{
// Logger.Trace("收到Ping命令：{0}", session.Target);
// UdpFrame pong = new UdpFrame(0, 0, 0, UdpCommand.Pong, null, frame.ProxyID);
// SendFrame(pong, ep);
//}
UdpFrame pong = new UdpFrame(0, 0, 0, UdpCommand.Pong, null, frame.ProxyID);
SendFrame(pong, ep);
List <UdpServerSession> sl = null;
lock (clientList)
{
sl = clientList.Where(x => x.Target.Host == ep.Address.ToString() && x.Target.Port == ep.Port).ToList();
}
sl.ForEach(s =>
{
s.ActiveTime = DateTime.Now;
s.LastReceiveTime = DateTime.Now;
});
}
return(frame);
}
