private AresChannel GetOldestContacted()
{
AresChannel oldest = null;
if (Channels.Count == 0)
{
return(oldest);
}
DateTime now = DateTime.Now;
foreach (var channel in Channels.ToArray())
{
if (Equals(ExternalIp, channel.ExternalIp) || channel.ExternalIp.IsLocalAreaNetwork())
{
continue;
}
double last = now.Subtract(channel.LastSendIPs).TotalMinutes;
double old = now.Subtract(oldest?.LastSendIPs ?? now).TotalMinutes;
if (last > 10 && last > old)
{
oldest = channel;
}
}
if (oldest != null)
{
oldest.TryCount++;
oldest.LastSendIPs = DateTime.Now;
}
return(oldest);
}
private void OnTimer(object state)
{
if (running)
{
if (TestingFirewall)
{
CheckFirewall();
}
else if (Listing)
{
AresChannel tosend = GetOldestContacted();
if (tosend != null)
{
uint num = 6;
socket.SendAsync(
new AddIps(
(ushort)socket.LocalEndPoint.Port,
GetSendServers(tosend.ExternalIp, ref num)),
new IPEndPoint(tosend.ExternalIp, tosend.Port));
}
DateTime now = DateTime.Now;
if (now.Subtract(lastmars).TotalMinutes >= 10)
{
lastmars = now;
UpdateMars();
UpdateZorbo();
}
if (now.Subtract(lastexpire).TotalMinutes >= 1)
{
lastexpire = now;
PurgeOld();
}
if (now.Subtract(lastpurge).TotalMinutes >= 10)
{
lastpurge = now;
PurgeExceeding();
}
}
ExpireBans();
}
}
private void CheckFirewall()
{
AresChannel channel = null;
DateTime now = DateTime.Now;
lock (Channels)
channel = Channels.Find((s) => !s.ExternalIp.IsLocalAreaNetwork() && now.Subtract(s.LastAskedFirewall).TotalMinutes > 5);
if (channel != null)
{
channel.LastAskedFirewall = now;
IPAddress ip = channel.ExternalIp;
lock (myfirewalltests) myfirewalltests.Add(channel);
socket.SendAsync(
new CheckFirewallWanted(channel.Port),
new IPEndPoint(ip, channel.Port));
}
else
{
TestingFirewall = false;
}
}
private void HandleUdpPacket(PacketEventArgs e)
{
if (CheckBanned(e.RemoteEndPoint.Address))
{
return;
}
switch ((AresUdpId)e.Packet.Id)
{
case AresUdpId.OP_SERVERLIST_ACKINFO: {
AckInfo info = (AckInfo)e.Packet;
AckInfoHits++;
lastackinfo = DateTime.Now;
AresChannel channel = FindChannel(e.RemoteEndPoint.Address, info.Port);
if (channel == null)
{
channel = FindLocalChannel(e.RemoteEndPoint.Address);
}
if (channel == null)
{
return;
}
channel.Port = info.Port;
channel.Users = info.Users;
channel.Name = info.Name;
channel.Topic = info.Topic;
channel.Language = info.Language;
channel.Version = info.Version;
ParseServers(info.Servers);
}
break;
case AresUdpId.OP_SERVERLIST_ADDIPS: {
AddIps add = (AddIps)e.Packet;
AddIpHits++;
AresChannel channel = FindChannel(e.RemoteEndPoint.Address, add.Port);
if (channel != null)
{
channel.Port = add.Port;
}
else
{
var address = e.RemoteEndPoint.Address;
if (e.RemoteEndPoint.Address.IsLocalAreaNetwork())
{
address = ExternalIp ?? address;
}
channel = new AresChannel(address, add.Port);
Channels.Add(channel);
}
uint num = 6;
ParseServers(add.Servers);
socket.SendAsync(new AckIps()
{
Port = channel.Port,
Servers = GetSendServers(server.ExternalIp, ref num),
}, e.RemoteEndPoint);
}
break;
case AresUdpId.OP_SERVERLIST_ACKIPS: {
AckIps ips = (AckIps)e.Packet;
AckIpHits++;
AresChannel channel = FindChannel(e.RemoteEndPoint.Address, ips.Port);
if (channel != null)
{
channel.Port = ips.Port;
channel.AckCount++;
channel.TryCount = 0;
channel.LastAcked = DateTime.Now;
}
ParseServers(ips.Servers);
}
break;
case AresUdpId.OP_SERVERLIST_CHECKFIREWALLBUSY: {
CheckFirewallBusy busy = (CheckFirewallBusy)e.Packet;
lock (myfirewalltests)
myfirewalltests.RemoveAll((s) => s.ExternalIp.Equals(e.RemoteEndPoint.Address));
ParseServers(busy.Servers);
}
break;
case AresUdpId.OP_SERVERLIST_PROCEEDCHECKFIREWALL: {
CheckFirewall check = (CheckFirewall)e.Packet;
FirewallTest test = null;
lock (firewalltests)
test = firewalltests.Find(s => s.GetHashCode() == check.Token);
if (test != null)
{
test.RemoteEndPoint.Port = check.Port;
test.Begin();
}
}
break;
case AresUdpId.OP_SERVERLIST_READYTOCHECKFIREWALL: {
CheckFirewallReady ready = (CheckFirewallReady)e.Packet;
if (!ready.Target.IsLocalAreaNetwork())
{
ExternalIp = ready.Target;
//Console.Write()
socket.SendAsync(new CheckFirewall()
{
Port = (ushort)socket.LocalEndPoint.Port,
Token = ready.Token,
}, e.RemoteEndPoint);
}
}
break;
case AresUdpId.OP_SERVERLIST_WANTCHECKFIREWALL: {
CheckFirewallWanted want = (CheckFirewallWanted)e.Packet;
CheckFirewallHits++;
if (firewalltests.Count < 5)
{
FirewallTest test = new FirewallTest(e.RemoteEndPoint.Address, want.Port);
lock (firewalltests) firewalltests.Add(test);
socket.SendAsync(
new CheckFirewallReady((uint)test.GetHashCode(), e.RemoteEndPoint.Address),
e.RemoteEndPoint);
}
else
{
uint num = 6;
socket.SendAsync(new CheckFirewallBusy()
{
Port = (ushort)socket.LocalEndPoint.Port,
Servers = GetSendServers(e.RemoteEndPoint.Address, ref num)
}, e.RemoteEndPoint);
}
}
break;
case AresUdpId.OP_SERVERLIST_SENDINFO: {
SendInfo sendInfo = (SendInfo)e.Packet;
SendInfoHits++;
if (Listing && Server != null)
{
AckInfo ackinfo = new AckInfo()
{
Language = Server.Config.Language,
Name = Server.Config.Name,
Topic = Server.Config.Topic,
Version = Strings.VersionChannels,
Port = (ushort)socket.LocalEndPoint.Port,
Users = (ushort)(Server.Users.Count + 1),
};
uint num = 6;
ackinfo.Servers = GetSendServers(e.RemoteEndPoint.Address, ref num);
ackinfo.ServersLen = (byte)num;
socket.SendAsync(ackinfo, e.RemoteEndPoint);
}
}
break;
}
}