private void ProcessAccept(SocketAsyncEventArgs e)
{
if (e.SocketError != SocketError.Success)
{
StartAccept(e);
return;
}
if (m_readWritePool.Count == 0)
{
e.AcceptSocket = null;
m_maxNumberAcceptedClients.Release();
StartAccept(e);
return;
}
SocketAsyncEventArgs eventArgs = m_readWritePool.Pop();
AsyncUserToken accpetUserToken = (AsyncUserToken)eventArgs.UserToken;
if (!m_clients.TryAdd(accpetUserToken.ID, accpetUserToken))
{
m_readWritePool.Push(eventArgs);
throw new Exception("Add same ID into m_clients");
}
// Get the socket for the accepted client connection and put it into the
// ReadEventArg object user token
accpetUserToken.AcceptSocket = e.AcceptSocket;
accpetUserToken.AcceptAsyncEventArgs = e;
accpetUserToken.ReadAsyncEventArgs = eventArgs;
accpetUserToken.ConnectDateTime = DateTime.Now;
string ipClient = accpetUserToken.AcceptSocket.RemoteEndPoint.ToString();
Console.WriteLine("Server : Client [ {0} ] connected. ID is [ {1} ] There are {2} clients connected to server", ipClient, accpetUserToken.ID, m_clients.Count);
// As soon as the client is connected, post a receive to the connection
bool willRaiseEvent = accpetUserToken.AcceptSocket.ReceiveAsync(eventArgs);
if (!willRaiseEvent)
{
ProcessReceive(eventArgs);
}
// Accept the next connection request
StartAccept(e);
}
/// <summary>
/// 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
/// </summary>
private void ProcessSend(SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
// done echoing data back to the client 完成回传数据回到客户端
AsyncUserToken token = (AsyncUserToken)e.UserToken;
// read the next block of data send from the client 读取从客户端发送的下一个数据块
bool willRaiseEvent = token.AcceptSocket.ReceiveAsync(e);
if (!willRaiseEvent)
{
ProcessReceive(e);
}
}
else
{
CloseClientSocket(e);
}
}