def create_new_flow(self, hash, pkt):
if TCP in pkt:
if 'S' in pkt[TCP].flags:
# SYN才是TCP流的开始
tmp_flow = Flow()
tmp_flow.add_first_pkt(pkt)
self.flows_dict[hash] = tmp_flow
self.current_flow_cnt += 1
self.flow_total_cnt += 1
else:
self.droped_pkt_cnt += 1
else:
# 对于UDP或其他协议，不需要进行上述的判断
tmp_flow = Flow()
tmp_flow.add_first_pkt(pkt)
self.flows_dict[hash] = tmp_flow
self.current_flow_cnt += 1
self.flow_total_cnt += 1
