我在用
System.Net.Sockets.NetworkStream
与我的服务器应用程序对话。
初始化:
var socket = new Socket(System.Net.Sockets.AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socket.IOControl(IOControlCode.KeepAliveValues, keepAliveBytes, null); //where bytes are calculated based on OnOff = 1, KeepAliveTime = 120000,KeepAliveInterval = 10000
socket.Connect(server_endpoint);
socket.NoDelay = true;
socket.ReceiveBufferSize = /*65kb*/;
socket.SendBufferSize = /*65kb*/;
var stream = new NetworkStream(socket, true);
stream.ReadTimeout = 750; // I expect triggering exception each time when this value is exceeded
// Configure 1000 ms delay on the server side
stream.ReadBytes(messageSizeBytes, 0, 4, cancellationToken); // I expect IOException here since the ReadTimeout is 750 but the server delay was 1000
但有时它不会发生。我跟你核实过了
stopwatch
:
Stopwatch stop = Stopwatch.StartNew();
_stream.ReadBytes(messageSizeBytes, 0, 4, cancellationToken);
stop.Stop();
1. The whole stream.ReadBytes duration => 1001.8625
2. The configured ReadTimeout in this line => 750
3. The exceeded time (without exception) => 1001.8625 - 750 = 251.8625
所以,我的问题是,这是否是预期的,如果不是,为什么会存在这种情况?
