private void HandleTcpClientAccepted(IAsyncResult ar)
{
if (IsRunning)
{
TcpListener tcpListener = (TcpListener)ar.AsyncState;
TcpClient tcpClient = tcpListener.EndAcceptTcpClient(ar);
byte[] buffer = new byte[tcpClient.ReceiveBufferSize];
TcpState internalClient = new TcpState(tcpClient, buffer);
lock (this.clients)
{
this.clients.Add(internalClient);
HandleClientConnected?.Invoke(internalClient);
}
NetworkStream networkStream = internalClient.NetworkStream;
networkStream.BeginRead(internalClient.Buffer, 0, internalClient.Buffer.Length, HandleDatagramReceived, internalClient);
tcpListener.BeginAcceptTcpClient(new AsyncCallback(HandleTcpClientAccepted), ar.AsyncState);
}
}
private void HandleDatagramReceived(IAsyncResult ar)
{
if (IsRunning)
{
TcpState internalClient = (TcpState)ar.AsyncState;
NetworkStream networkStream = internalClient.NetworkStream;
int numberOfReadBytes = 0;
try
{
numberOfReadBytes = networkStream.EndRead(ar);
}
catch
{
numberOfReadBytes = 0;
}
if (numberOfReadBytes == 0)
{
// 连接已关闭
lock (this.clients)
{
this.clients.Remove(internalClient);
HandleClientDisconnected?.Invoke(internalClient);
return;
}
}
// 接收到字节和触发事件通知
byte[] receivedBytes = new byte[numberOfReadBytes];
Buffer.BlockCopy(internalClient.Buffer, 0, receivedBytes, 0, numberOfReadBytes);
HandleDataReceived?.Invoke(internalClient, receivedBytes);
HandleTextReceived?.Invoke(internalClient, this.Encoding.GetString(receivedBytes, 0, receivedBytes.Length));
// 继续侦听TCP数据报包
networkStream.BeginRead(internalClient.Buffer, 0, internalClient.Buffer.Length, HandleDatagramReceived, internalClient);
}
}
