// This method is invoked when an asynchronous send operation completes.
// The method issues another receive on the socket to read any additional
// data sent from the client
//
// <param name="e"></param>
private void ProcessSend(SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
// done echoing data back to the client
AsyncUserToken token = (AsyncUserToken)e.UserToken;
// read the next block of data send from the client
bool willRaiseEvent = token.Socket.ReceiveAsync(e);
if (!willRaiseEvent)
{
ProcessReceive(e);
}
}
else
{
CloseClientSocket(e);
}
}
private void btnSend_Click(object sender, EventArgs e)
{
if (m_socket.ClientList.Count > 0)
{
AsyncUserToken token = null;
// 查找要发送的client的socket对象。zhx
token = m_socket.ClientList.Find(x => x.IPAddress.ToString() == "127.0.0.1");
//foreach (AsyncUserToken usertoken in m_socket.ClientList)
//{
// if (usertoken.IPAddress.ToString() == "192.168.1.158")
// {
// token = usertoken;
// break;
// }
//}
string message = this.send.Text.Trim();
if (string.IsNullOrWhiteSpace(message))
{
MessageBox.Show("请输入要发送的内容", "提示", MessageBoxButtons.OK);
return;
}
else
{
if (token != null)
{
byte[] messageBuffer = Encoding.UTF8.GetBytes(this.send.Text);
bool issent = m_socket.SendMessage(token, messageBuffer);
if (issent)
{
this.textBoxSend.AppendText("Send: " + message + "\r\n");
}
}
}
}
else
{
MessageBox.Show("未监听到连接，无法发送", "提示", MessageBoxButtons.OK);
return;
}
}
private void ProcessAccept(SocketAsyncEventArgs e)
{
try
{
Interlocked.Increment(ref m_clientCount);
// Get the socket for the accepted client connection and put it into the
//ReadEventArg object user token
SocketAsyncEventArgs readEventArgs = m_pool.Pop();
AsyncUserToken userToken = (AsyncUserToken)readEventArgs.UserToken;
userToken.usernamr = "Mtt";
userToken.Socket = e.AcceptSocket;
userToken.ConnectTime = DateTime.Now;
userToken.Remote = e.AcceptSocket.RemoteEndPoint;
userToken.IPAddress = ((IPEndPoint)(e.AcceptSocket.RemoteEndPoint)).Address;
lock (m_clients) { m_clients.Add(userToken); }
if (ClientNumberChange != null)
{
ClientNumberChange(1, userToken);
}
if (!e.AcceptSocket.ReceiveAsync(readEventArgs))
{
ProcessReceive(readEventArgs);
}
}
catch (Exception me)
{
Console.WriteLine(me.Message);
}
// Accept the next connection request
if (e.SocketError == SocketError.OperationAborted)
{
return;
}
StartAccept(e);
}
/// <summary>
/// 停止服务
/// </summary>
public void Stop()
{
foreach (var item in m_clients)
{
try
{
AsyncUserToken token = item;
token.Socket.Shutdown(SocketShutdown.Both);
}
catch (Exception) { }
}
try
{
if (m_clients.Count > 0)
{
listenSocket.Shutdown(SocketShutdown.Both);
}
}
catch (Exception e)//当socket 无连接时（即没有可用已连接的client）
{
// listenSocket.Disconnect(false);///因为无可用的socket连接，此方法不可用
Console.WriteLine(e.Message);
}
finally
{
listenSocket.Close();
//通知界面，server已经停止
if (ServerStopedEvent != null)
{
ServerStopedEvent();
}
lock (m_clients)
{
m_clients.Clear();
}
}
}
