/// <summary>
/// 向单独的一个客户端发送消息
/// </summary>
/// <param name="ip"></param>
/// <param name="SendData"></param>
public void SendToClient(IPEndPoint ip, string SendData)
{
try
{
Sockets sks = ClientList.Find(o => { return(o.Ip == ip); });
if (sks == null || !sks.Client.Connected)
{
Sockets ks = new Sockets();
//标识客户端下线
sks.ClientDispose = true;
sks.ex = new Exception("客户端没有连接");
pushSockets.Invoke(sks);
}
if (sks.Client.Connected)
{
//获取当前流进行写入.
NetworkStream nStream = sks.nStream;
if (nStream.CanWrite)
{
byte[] buffer = Encoding.UTF8.GetBytes(SendData);
nStream.Write(buffer, 0, buffer.Length);
}
else
{
//避免流被关闭,重新从对象中获取流
nStream = sks.Client.GetStream();
if (nStream.CanWrite)
{
byte[] buffer = Encoding.UTF8.GetBytes(SendData);
nStream.Write(buffer, 0, buffer.Length);
}
else
{
//如果还是无法写入,那么认为客户端中断连接.
ClientList.Remove(sks);
Sockets ks = new Sockets();
sks.ClientDispose = true; //如果出现异常,标识客户端下线
sks.ex = new Exception("客户端无连接");
pushSockets.Invoke(sks); //推送至UI
}
}
}
}
catch (Exception skex)
{
Sockets sks = new Sockets();
sks.ClientDispose = true; //如果出现异常,标识客户端退出
sks.ex = skex;
pushSockets.Invoke(sks); //推送至UI
}
}
/// <summary>
/// 客户端加入队列
/// </summary>
/// <param name="sk"></param>
private void AddClientList(Sockets sk)
{
lock (obj)
{
Sockets sockets = ClientList.Find(o => { return(o.Ip == sk.Ip); });
if (sockets == null)
{
ClientList.Add(sk);
}
else
{
ClientList.Remove(sockets);
ClientList.Add(sk);
}
}
}
public override void Stop()
{
Sockets sks = new Sockets();
if (client != null)
{
client.Client.Shutdown(SocketShutdown.Both);
Thread.Sleep(10);
client.Close();
IsClose = true;
client = null;
}
else
{
sks.ex = new Exception("客户端没有初始化.!");
}
pushSockets.Invoke(sks);//推送至UI
}
/// <summary>
/// 获取处理新的链接请求
/// </summary>
private void GetAcceptTcpClient()
{
try
{
if (Listener.Pending())
{
semap.WaitOne();
//接收到挂起的客户端请求链接
System.Net.Sockets.TcpClient tcpClient = Listener.AcceptTcpClient();
//维护处理客户端队列
System.Net.Sockets.Socket socket = tcpClient.Client;
NetworkStream stream = new NetworkStream(socket, true);
Sockets sks = new Sockets(tcpClient.Client.RemoteEndPoint as IPEndPoint, tcpClient, stream);
sks.NewClientFlag = true;
//推送新的客户端连接信息
pushSockets.Invoke(sks);
//客户端异步接收数据
sks.nStream.BeginRead(sks.RecBuffer, 0, sks.RecBuffer.Length, new AsyncCallback(EndReader), sks);
//加入客户端队列
this.AddClientList(sks);
//链接成功后主动向客户端发送一条消息
if (stream.CanWrite)
{
byte[] buffer = Encoding.UTF8.GetBytes(this.InitMsg);
stream.Write(buffer, 0, buffer.Length);
}
semap.Release();
}
}
catch
{
return;
}
}