#define MAX_CONNECT_IN_ROW 3
#define MAX_REJOIN_TIME 4000

enum IPConnectData
{
    ip[25],
    lastConnectTime,
    connectTimes
}
new Connects[MAX_PLAYERS][IPConnectData];

public OnPlayerConnect(playerid)
{
    new pIP[25];
    new bool:ipFound = false;
    GetPlayerIp(playerid, pIP, 25);
    for (new i; i < MAX_PLAYERS; i++)
    {
        if(!strcmp(Connects[i][ip], pIP, false))
        {
            if (GetTickCount() - Connects[i][lastConnectTime] < MAX_REJOIN_TIME)
            {
                Connects[i][lastConnectTime] = GetTickCount();
                Connects[i][connectTimes]++;
                if (Connects[i][connectTimes] > MAX_CONNECT_IN_ROW)
                {
                    new str[100];
                    format(str, 100, "banip %s", pIP);
                    SendRconCommand(str);
                    Kick(playerid);
                    return 1;
                }
            }
            else
            {
                Connects[i][lastConnectTime] = GetTickCount();
                Connects[i][connectTimes] = 1;
            }
            ipFound = true;
            break;
        }
    }
    if (!ipFound)
    {
        for (new i; i < MAX_PLAYERS; i++)
        {
            if (GetTickCount() - Connects[i][lastConnectTime] > MAX_REJOIN_TIME)
            {
                format(Connects[i][ip], 25, "%s", pIP);
                Connects[i][lastConnectTime] = GetTickCount();
                Connects[i][connectTimes] = 1;
                break;
            }
        }
    }
}