Enhancment: Contrain ovpn data packet on minimal size

Author: hynekkar

process/ovpn.cpp

@@ -166,7 +166,9 @@ void OVPNPlugin::update_record(RecordExtOVPN* vpn_data, const Packet &pkt)
             vpn_data->status = status_data;
             vpn_data->invalid_pkt_cnt = -1;
          }
-         vpn_data->data_pkt_cnt++;
+         if(pkt.payload_len_wire > c_min_data_packet_size) {
+            vpn_data->data_pkt_cnt++;
+         }
          break;
 
          //no opcode

process/ovpn.hpp

@@ -152,6 +152,7 @@ class OVPNPlugin : public ProcessPlugin
       udp = 17
    } e_ip_proto_nbr;
 
+   static const uint32_t c_min_data_packet_size = 500;
    static const uint32_t c_udp_opcode_index = 0;
    static const uint32_t c_tcp_opcode_index = 2;
    static const uint32_t min_pckt_treshold = 20;