public static void Heartbeat()
{
if (!BitConverter.IsLittleEndian)
{
throw new SystemException("Unsupported system");
}
Socketx s = new Socketx(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Unspecified);
s.Bind(new IPEndPoint(IPAddress.Parse("0.0.0.0"), port));
s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.SendTimeout, 3000);
s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 3000);
while (true)
{
PPPOEHeartbeat pppoe = new PPPOEHeartbeat();
pppoe.Send(s);
G.KeepAlive2(s, pppoe);
}
}
public static void BeginHeartbeat(Func <Exception, bool> OnException)
{
onException = OnException;
unchecked
{
if (!BitConverter.IsLittleEndian)
{
exit = onException(new SystemException("Unsupported system"));
if (exit)
{
return;
}
}
Socketx s = new Socketx(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Unspecified);
while (!exit)
{
PPPOEHeartbeat pppoe = new PPPOEHeartbeat();
pppoe.Send(s);
KA2.KeepAlive2(s, pppoe);
}
}
}
public static void KeepAlive2(Socketx s, PPPOEHeartbeat pppoe)
{
byte[] tail;
List <byte> packet;
string svr = server;
int ran = random.Next(0, 0xFFFF);
int svr_num = 0;
byte[] data = new byte[1024];
ran += random.Next(1, 10);
packet = KeepAlivePackageBuilder((byte)svr_num, ran, new byte[] { 0x00, 0x00, 0x00, 0x00 }, 1, true);
int datalen = 0;
while (true)
{
Log("[keep-alive2] send1", packet.ToArray(), packet.Count);
s.SendTo(packet.ToArray(), target);
datalen = s.ReceiveFrom(data, ref target);
if (data[0] == 0x07 && data[2] == 0x28)
{
break;
}
else if (data[0] == 0x07 && data[2] == 0x10)
{
Console.WriteLine("[keep-alive2] recv file, resending...");
svr_num++;
packet = KeepAlivePackageBuilder((byte)svr_num, ran, new byte[] { 0x00, 0x00, 0x00, 0x00 }, (byte)svr_num, false);
}
else
{
Log("[keep-alive2] recv1/unexpected", data.ToArray(), datalen);
}
}
Log("[keep-alive2] recv1", data.ToArray(), datalen);
ran += random.Next(1, 10);
packet = KeepAlivePackageBuilder((byte)svr_num, ran, new byte[] { 0x00, 0x00, 0x00, 0x00 }, 1, false);
Log("[keep-alive2] send2", packet.ToArray(), packet.Count);
s.SendTo(packet.ToArray(), target);
while (true)
{
datalen = s.ReceiveFrom(data, ref target);
if (data[0] == 0x07)
{
svr_num++;
break;
}
else
{
Log("[keep-alive2] recv2/unexpected", data.ToArray(), datalen);
}
}
Log("[keep-alive2] recv2", data.ToArray(), datalen);
tail = new byte[] { data[16], data[17], data[18], data[19] };
ran += random.Next(1, 10);
packet = KeepAlivePackageBuilder((byte)svr_num, ran, tail, 3, false);
Log("[keep-alive2] send3", packet.ToArray(), packet.Count);
s.SendTo(packet.ToArray(), target);
while (true)
{
datalen = s.ReceiveFrom(data, ref target);
if (data[0] == 0x07)
{
svr_num++;
break;
}
else
{
Log("[keep-alive2] recv3/unexpected", data.ToArray(), datalen);
}
}
Log("[keep-alive2] recv3", data.ToArray(), datalen);
tail = new byte[] { data[16], data[17], data[18], data[19] };
Console.WriteLine("[keep-alive2] keep-alive2 loop was in daemon.");
int i = svr_num;
while (true)
{
try
{
ran += random.Next(1, 10);
packet = KeepAlivePackageBuilder((byte)i, ran, tail, 1, false);
Log($"[keep-alive2] send{i}", packet.ToArray(), packet.Count);
s.SendTo(packet.ToArray(), target);
datalen = s.ReceiveFrom(data, ref target);
Log($"[keep-alive2] recv{i}", data.ToArray(), datalen);
tail = new byte[] { data[16], data[17], data[18], data[19] };
ran += random.Next(1, 10);
packet = KeepAlivePackageBuilder((byte)(i + 1), ran, tail, 3, false);
s.SendTo(packet.ToArray(), target);
Log($"[keep-alive2] send{i + 1}", packet.ToArray(), packet.Count);
datalen = s.ReceiveFrom(data, ref target);
Log($"[keep-alive2] recv{i + 1}", data.ToArray(), datalen);
tail = new byte[] { data[16], data[17], data[18], data[19] };
i = (i + 2) % 0xFF;
Thread.Sleep(10 * 1000);
pppoe.Send(s);
}
catch (Exception e)
{
Console.WriteLine($"[ka2] exception {e.Message}");
exit = onException(e);
if (exit)
{
return;
}
}
}
}
