/// <summary>Set up the socket to use TCP keep alive messages</summary>
protected void SetKeepAlive()
{
try
{
tcp_keepalive sioKeepAliveVals = new tcp_keepalive();
sioKeepAliveVals.onoff = (uint)1; // 1 to enable 0 to disable
sioKeepAliveVals.keepalivetime = this.KeepAliveInactivity;
sioKeepAliveVals.keepaliveinterval = this.KeepAliveInterval;
IntPtr p = Marshal.AllocHGlobal(Marshal.SizeOf(sioKeepAliveVals));
Marshal.StructureToPtr(sioKeepAliveVals, p, true);
byte[] inBytes = new byte[Marshal.SizeOf(sioKeepAliveVals)];
Marshal.Copy(p, inBytes, 0, inBytes.Length);
Marshal.FreeHGlobal(p);
byte[] outBytes = BitConverter.GetBytes(0);
if (IsConnected(this.socket))
{
this.socket.IOControl(IOControlCode.KeepAliveValues, inBytes, outBytes);
}
else
{
Close("Currently disconnected. Try to reconnect.");
}
}
catch (Exception ex)
{
this.OnErrorReceived("Keep Alive", ex);
}
}
private static void AcceptCallback(IAsyncResult ar)
{
var TcpClient = ListenSocket.EndAcceptTcpClient(ar);
// Keep-Alive特性设置
tcp_keepalive ka = new tcp_keepalive();
ka.onoff = 1; // 启用
ka.keepalivetime = 5 * 60 * 1000; // 无数据收发时每5min发送一次Keep-Alive包
ka.keepaliveinterval = 10000; // Keep-Alive包发送无应答时重发间隔10s
byte[] buff = NativeMethods.StructureToByteArray(ka);
byte[] ret = new byte[buff.Length];
TcpClient.Client.IOControl(IOControlCode.KeepAliveValues, buff, ret);
//添加到新连接列表，定时遍历并关闭不发送数据的连接
AddNewHostAsync(TcpClient);
}
public void KeepAlive()
{
var socket = AsyncSocket.Create(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
tcp_keepalive tcpKeepalive = new tcp_keepalive();
tcpKeepalive.onoff = 1;
tcpKeepalive.keepaliveinterval = 1000;
tcpKeepalive.keepalivetime = 1000;
int size = Marshal.SizeOf(tcpKeepalive);
byte[] arr = new byte[size];
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(tcpKeepalive, ptr, true);
Marshal.Copy(ptr, arr, 0, size);
Marshal.FreeHGlobal(ptr);
socket.IOControl(IOControlCode.KeepAliveValues, (byte[])arr, null);
}
public static unsafe void EnableKeepaliveWindows(this Socket socket, uint time = 2000, uint interval = 500)
{
QueryKeepalive(socket);
tcp_keepalive keepalive = new tcp_keepalive
{
onoff = 1,
keepalivetime = time,
keepaliveinterval = interval
};
void *pKeepalive = &keepalive;
byte[] bytes = new Span <byte>(pKeepalive, sizeof(tcp_keepalive)).ToArray();
byte[] outVals = new byte[bytes.Length];
int retVal = socket.IOControl(IOControlCode.KeepAliveValues, bytes, outVals);
if (retVal != 0)
{
throw new Exception("IOControl(IOControlCode.KeepAliveValues) != 0");
}
QueryKeepalive(socket);
}
public void KeepAlive()
{
var socket = AsyncSocket.Create(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
tcp_keepalive tcpKeepalive = new tcp_keepalive();
tcpKeepalive.onoff = 1;
tcpKeepalive.keepaliveinterval = 1000;
tcpKeepalive.keepalivetime = 1000;
int size = Marshal.SizeOf(tcpKeepalive);
byte[] arr = new byte[size];
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(tcpKeepalive, ptr, true);
Marshal.Copy(ptr, arr, 0, size);
Marshal.FreeHGlobal(ptr);
socket.IOControl(IOControlCode.KeepAliveValues, (byte[])arr, null);
}
/// <summary>Set up the socket to use TCP keep alive messages</summary>
protected void SetKeepAlive()
{
try
{
tcp_keepalive sioKeepAliveVals = new tcp_keepalive();
sioKeepAliveVals.onoff = (uint)1; // 1 to enable 0 to disable
sioKeepAliveVals.keepalivetime = this.KeepAliveInactivity;
sioKeepAliveVals.keepaliveinterval = this.KeepAliveInterval;
IntPtr p = Marshal.AllocHGlobal(Marshal.SizeOf(sioKeepAliveVals));
Marshal.StructureToPtr(sioKeepAliveVals, p, true);
byte[] inBytes = new byte[Marshal.SizeOf(sioKeepAliveVals)];
Marshal.Copy(p, inBytes, 0, inBytes.Length);
Marshal.FreeHGlobal(p);
byte[] outBytes = BitConverter.GetBytes(0);
this._socket.IOControl(IOControlCode.KeepAliveValues, inBytes, outBytes);
this._socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
}
catch (Exception ex)
{
this.OnErrorReceived("Keep Alive", ex);
}
}
/// <summary>Set up the socket to use TCP keep alive messages</summary>
protected void SetKeepAlive()
{
try
{
tcp_keepalive sioKeepAliveVals = new tcp_keepalive();
sioKeepAliveVals.onoff = (uint)1; // 1 to enable 0 to disable
sioKeepAliveVals.keepalivetime = this.KeepAliveInactivity;
sioKeepAliveVals.keepaliveinterval = this.KeepAliveInterval;
IntPtr p = Marshal.AllocHGlobal(Marshal.SizeOf(sioKeepAliveVals));
Marshal.StructureToPtr(sioKeepAliveVals, p, true);
byte[] inBytes = new byte[Marshal.SizeOf(sioKeepAliveVals)];
Marshal.Copy(p, inBytes, 0, inBytes.Length);
Marshal.FreeHGlobal(p);
byte[] outBytes = BitConverter.GetBytes(0);
this.socket.IOControl(IOControlCode.KeepAliveValues, inBytes, outBytes);
}
catch (Exception ex)
{
this.OnErrorReceived("Keep Alive", ex);
}
}