我正在创建一款客户端/服务器应用程序。服务器已经设计好并准备好等待客户端的连接。现在,在客户端部分,我希望在整个应用程序的生命周期内保持连接处于活动状态,并且只有当主客户端应用程序关闭或关机,或者服务器关闭它时,连接才会关闭。
目前,每隔10秒钟服务器会关闭TCP连接。我尝试使用
在处理程序中,我有以下内容:
目前,每隔10秒钟服务器会关闭TCP连接。我尝试使用
socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.KeepAlive, true);
但这对我不起作用......以下是我的代码块
public TCPStreamDevice(string RemoteIPAddress, int RemotePort, string SourceIPAddress, int SourcePortNo)
{
mIpAddress = RemoteIPAddress;
mPort = RemotePort;
mClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
System.Net.IPEndPoint LocalEndPoint = new System.Net.IPEndPoint(System.Net.IPAddress.Parse(SourceIPAddress), SourcePortNo);
mClient.Bind(LocalEndPoint);
mDataReceivedCallback = new AsyncCallback(DataReceivedTCPCallback_Handler);
mBuffer = new byte[1024];
Description = new DeviceDescription();
}
在处理程序中,我有以下内容:
private void DataReceivedTCPCallback_Handler(IAsyncResult ar)
{
try
{
Socket client = (Socket)ar.AsyncState;
int bytesReceived = client.EndReceive(ar);
if (bytesReceived > 0)
{
//to know transport level errors
//EngineInterface.reponseReceived(mBuffer, false);
ReceiveCallBackFunc(mBuffer, bytesReceived);
client.BeginReceive(mBuffer, 0, 1024, SocketFlags.None, DataReceivedTCPCallback_Handler, client);
}
else
{
//disconnect
/* when there is no datapacket means no TCP connection is alive now (how can i keep Tcp alive here) */
}
}
}