private void PacketReceived(object sender, PacketEventArgs e)
{
//check bans, then floods, a flood will cause a ban
if (CheckBanned(e.RemoteEndPoint.Address) ||
!CheckFloodCounter(e.RemoteEndPoint.Address))
{
return;
}
switch ((UdpId)e.Packet.Id)
{
case UdpId.OP_SERVERLIST_ACKINFO: {
AckInfo info = (AckInfo)e.Packet;
AckInfoHits++;
// sent to client from server...
// add channel list support for server?
ParseServers(info.Servers);
}
break;
case UdpId.OP_SERVERLIST_ADDIPS: {
AddIps add = (AddIps)e.Packet;
ServerRecord server = null;
lock (servers) {
server = (ServerRecord)servers.Find((s) => s.ExternalIp.Equals(e.RemoteEndPoint.Address));
if (server != null)
{
server.Port = add.Port;
}
else
{
server = new ServerRecord(e.RemoteEndPoint.Address, add.Port);
servers.Add(server);
}
}
uint num = 6;
ParseServers(add.Servers);
socket.SendAsync(new AckIps()
{
Port = server.Port,
Servers = GetSendServers(server.ExternalIp, ref num),
}, e.RemoteEndPoint);
}
break;
case UdpId.OP_SERVERLIST_ACKIPS: {
AckIps ips = (AckIps)e.Packet;
ServerRecord server = null;
AckIpHits++;
lock (servers)
server = (ServerRecord)servers.Find((s) => s.ExternalIp.Equals(e.RemoteEndPoint.Address));
if (server != null)
{
server.Port = ips.Port;
server.AckReceived();
}
ParseServers(ips.Servers);
}
break;
case UdpId.OP_SERVERLIST_CHECKFIREWALLBUSY: {
CheckFirewallBusy busy = (CheckFirewallBusy)e.Packet;
lock (myfirewalltests)
myfirewalltests.RemoveAll((s) => s.ExternalIp.Equals(e.RemoteEndPoint.Address));
ParseServers(busy.Servers);
}
break;
case UdpId.OP_SERVERLIST_PROCEEDCHECKFIREWALL: {
CheckFirewall check = (CheckFirewall)e.Packet;
FirewallTest test = null;
lock (firewalltests)
test = firewalltests.Find(s => s.GetHashCode() == check.Cookie);
if (test != null)
{
test.RemoteEndPoint.Port = check.Port;
test.Begin();
}
}
break;
case UdpId.OP_SERVERLIST_READYTOCHECKFIREWALL: {
CheckFirewallReady reader = (CheckFirewallReady)e.Packet;
if (!reader.Target.IsLocal())
{
((AresServer)server).ExternalIp = reader.Target;
socket.SendAsync(new CheckFirewall()
{
Port = (ushort)socket.LocalEndPoint.Port,
Cookie = reader.Cookie,
}, e.RemoteEndPoint);
}
}
break;
case UdpId.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 UdpId.OP_SERVERLIST_SENDINFO: {
SendInfo sendInfo = (SendInfo)e.Packet;
SendInfoHits++;
AckInfo ackinfo = new AckInfo()
{
Language = server.Config.Language,
Name = server.Config.Name,
Topic = server.Config.Topic,
Version = Strings.VersionLogin,
Port = (ushort)socket.LocalEndPoint.Port,
//Users = (ushort)server.Users.Count,
Users = (ushort)Math.Max(server.Users.Count, (server.Users.Count + new Random().Next(15, 20))),
};
uint num = 6;
ackinfo.Servers = GetSendServers(e.RemoteEndPoint.Address, ref num);
ackinfo.ServersLen = (byte)num;
socket.SendAsync(ackinfo, e.RemoteEndPoint);
}
break;
case UdpId.OP_SERVERLIST_SENDNODES: {
uint num = 20;
SendNodes sendnodes = (SendNodes)e.Packet;
AckNodes acknodes = new AckNodes()
{
Port = server.Config.Port,
Nodes = GetSendServers(e.RemoteEndPoint.Address, ref num)
};
socket.SendAsync(acknodes, e.RemoteEndPoint);
}
break;
case UdpId.OP_SERVERLIST_ACKNODES: {
AckNodes ackNodes = (AckNodes)e.Packet;
ParseServers(ackNodes.Nodes);
}
break;
}
}