我编写了C＃程序，服务器仅将数据从服务器发送到客户端。 问题是两次发送数据之间的时间是可变的（最长5分钟） 有时会导致超时。
当我每3秒发送一次数据时，它们都没有超时。 但是，如果消息在5分钟后发送，则客户端可能无法接收它。
我做了客户端和服务器都具有的超时功能。超时后，每次重新连接：
public class TimerControl
{
private System.Timers.Timer timeoutTimer = null;
public void initTimeout(int timeMS, System.Timers.ElapsedEventHandler funct)
{
timeoutTimer = new System.Timers.Timer();
timeoutTimer.Interval = timeMS; //MS
timeoutTimer.Elapsed += funct;
timeoutTimer.AutoReset = true;
setTimeoutTimer(false);
}
public void setTimeoutTimer(bool state)
{
if (timeoutTimer != null)
{
timeoutTimer.Stop();
timeoutTimer.Enabled = state;
if (state) timeoutTimer.Start();
}
}
public void resetTimeoutTimer()
{
if (timeoutTimer != null && timeoutTimer.Enabled)
{
timeoutTimer.Stop();
timeoutTimer.Start();
}
}
}
没有解决问题的
我应该怎么做才能使其正常工作，并且在一段时间后不超时？
服务器：
public class TCPserver :TCPunit
{
private int TIMEOUT_MS = 5000;
Socket serverListener = null;
Queue<string> dataQueued = null;
bool isConnectedForced = false;
public TCPserver()
{
dataQueued = new Queue<string>();
initTimeout(TIMEOUT_MS, reconnect);
}
public void sendDataToClient(string message)
{
dataQueued.Enqueue(message + Environment.NewLine);
if(isConnectedForced) startListening();
if (dataQueued.Count > 0) setTimeoutTimer(true);
}
public bool connect(string adress)
{
this.thisUnitAdress = adress;
isConnectedForced = true;
loopedConnect();
startListening();
return true;
}
public bool disconnect()
{
isConnectedForced = false;
loopedDisconnect();
return true;
}
private bool loopedConnect()
{
try
{
IPAddress ipAddress = IPAddress.Parse(this.thisUnitAdress);
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port);
if (serverListener != null) loopedDisconnect();
serverListener = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
serverListener.Bind(localEndPoint);
Console.WriteLine("SERVER connected to: " + this.thisUnitAdress + " port : " + port.ToString());
return true;
}
catch (Exception ex)
{
Console.WriteLine("!!! SERVER connect");
setTimeoutTimer(true);
return false;
}
}
private bool loopedDisconnect()
{
setTimeoutTimer(false);
if (serverListener != null)
{
if (serverListener.Connected) serverListener.Shutdown(SocketShutdown.Both);
serverListener.Close();
Console.WriteLine("SERVER CLOSED!");
serverListener = null;
}
return true;
}
private void reconnect(Object source, System.Timers.ElapsedEventArgs e)
{
if (isConnectedForced)
{
Console.WriteLine("SERVER RECONNECT!!!");
loopedDisconnect();
loopedConnect();
if (dataQueued.Count > 0) setTimeoutTimer(true);
else setTimeoutTimer(false);
}
else
{
setTimeoutTimer(false);
}
}
private void startListening()
{
try
{
serverListener.Listen(100);
Console.WriteLine("SERVER Waiting for a connection...");
serverListener.BeginAccept(new AsyncCallback(AcceptCallback), serverListener);
setTimeoutTimer(true);
}
catch (Exception ex)
{
Console.WriteLine("!!! SERVER sendingLOOP");
setTimeoutTimer(true);
}
}
private void AcceptCallback(IAsyncResult ar)
{
try
{
Socket listener = (Socket)ar.AsyncState;
Socket handler = listener.EndAccept(ar);
//HERE SEND
while (dataQueued.Count > 0)
{
string data = dataQueued.Dequeue();
byte[] byteData = Encoding.ASCII.GetBytes(data);
handler.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), handler);
}
//handler.Shutdown(SocketShutdown.Both);
//handler.Close();
setTimeoutTimer(false);
}
catch (Exception ex)
{
Console.WriteLine("!!! SERVER AcceptCallback");
setTimeoutTimer(true);
}
}
private void SendCallback(IAsyncResult ar)
{
try
{
((Socket)ar.AsyncState).EndSend(ar);
}
catch(Exception ex)
{
Console.WriteLine("!!! SERVER SendCallback");
setTimeoutTimer(true);
}
}
}
客户：
public class TCPclient : TCPunit
{
private int TIMEOUT_MS = 5000;
Socket client;
IPEndPoint remoteEP;
bool isConnecting = false;
bool isRecieving = false; // TELS IF PROGRAM SHOULD LOOK FOR SERVER ALL TIME
Action<string> afterRecieveAction = null ; // To print to GUI
public TCPclient()
{
initTimeout(TIMEOUT_MS, reconnect);
}
public void assignAfterRecieveAction(Action<string> action)
{
this.afterRecieveAction = action;
}
public bool connect(string adress)
{
thisUnitAdress = adress;
loopedConnect();
return true;
}
public bool disconnect()
{
isRecieving = false;
isConnecting = false;
loopedDisconnect();
return true;
}
private bool loopedConnect()
{
IPAddress ipAddress = IPAddress.Parse(this.thisUnitAdress);
remoteEP = new IPEndPoint(ipAddress, port);
client = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
setTimeoutTimer(true);
isRecieving = true;
StartClientListening();
return true;
}
private bool loopedDisconnect()
{
if (client != null)
{
if (client.Connected) client.Shutdown(SocketShutdown.Both);
client.Close();
Console.WriteLine("CLIENT CLOSED!");
client = null;
}
return true;
}
private void reconnect(Object source, System.Timers.ElapsedEventArgs e)
{
if (isRecieving)
{
Console.WriteLine("CLIENT RECONNECT!!!");
if (isConnecting) loopedDisconnect();
isRecieving = true;
loopedConnect();
}
}
private void StartClientListening()
{
try
{
if (isRecieving)
{
client.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback) , client);
isConnecting = true;
Console.WriteLine("CLIENT listens to: " + thisUnitAdress + " port : " + port.ToString());
}
}
catch (System.Net.Sockets.SocketException ex)
{
Console.WriteLine("CLIENT StartClientListening");
}
catch (Exception ex)
{
Console.WriteLine("!!! CLIENT StartClientListening2");
if (isRecieving) setTimeoutTimer(true);
}
}
private void ConnectCallback(IAsyncResult ar)
{
try
{
client.EndConnect(ar);
Console.WriteLine("CLIENT connected to {0}", client.RemoteEndPoint.ToString());
StateObject state = new StateObject();
state.workSocket = client;
client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state); ;
}
catch (Exception e)
{
Console.WriteLine("!!! CLIENT ConnectCallback");
if (isRecieving) setTimeoutTimer(true);
}
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
StateObject state = (StateObject)ar.AsyncState;
Socket client = state.workSocket;
int bytesRead = client.EndReceive(ar);
if (bytesRead > 0)
{
String response = Encoding.ASCII.GetString(state.buffer);
if (afterRecieveAction != null) afterRecieveAction(response);
resetTimeoutTimer();
client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);
}
}
catch(System.Net.Sockets.SocketException ex)
{
Console.WriteLine("!!! CLIENT ReceiveCallback");
if (isRecieving) setTimeoutTimer(true);
}
catch(Exception ex)
{
Console.WriteLine("!!! CLIENT ReceiveCallback2");
if (isRecieving) setTimeoutTimer(true);
}
}
}
如何使异步服务器-客户端正常工作而不超时？
最好的问候， 克里斯
答案 0 :(得分：0)
您应该使用socket_set_option对此参数进行设置