public OnPluginStart()  
{  
      ////////////////////////////////////////////////////////  

      // на каком должен работать  
      new const String:IP_PORT[] = "1.2.3.4:27015";  

      /////////  

      new Handle:h_IP = FindConVar("hostip");  
      new Handle:h_PORT = FindConVar("hostport");  

      if (h_IP == INVALID_HANDLE || h_PORT == INVALID_HANDLE)  
      {  
          SetFailState("h_IP || h_PORT == INVALID_HANDLE");  
          return;  
      }  

      new hostip = GetConVarInt(h_IP);  
      new ip1 = hostip >>> 24 & 255;  
      new ip2 = hostip >>> 16 & 255;  
      new ip3 = hostip >>> 8 & 255;  
      new ip4 = hostip & 255;  

      decl String:current_ip_port[75];  
      Format(current_ip_port, 75, "%d.%d.%d.%d:%d", ip1, ip2, ip3, ip4, GetConVarInt(h_PORT));  
      if (strcmp(current_ip_port, IP_PORT, false) != 0)  
      {  
          SetFailState("\nYour server: %s. Plugin for: %s", current_ip_port, IP_PORT);  
      }  

      ////////////////////////////////////////////////////////  
}