有没有给人做简历的网站,正规的投资公司融资流程,店铺推广渠道有哪些方式,电商网站建设好么我写了一个简单的网络流量监视器来获得B/s和/或总数据传输率(B)。然而#xff0c;当我用ftp(使用Total Commander)传输一个文件来测试它时#xff0c;我不能让它把Total transfer作为文件大小来衡量。它总是比实际尺寸小得多。我不确定我是不是做错了什么。。我设置的BPF过滤…我写了一个简单的网络流量监视器来获得B/s和/或总数据传输率(B)。然而当我用ftp(使用Total Commander)传输一个文件来测试它时我不能让它把Total transfer作为文件大小来衡量。它总是比实际尺寸小得多。我不确定我是不是做错了什么。。我设置的BPF过滤器是dst 下面是我的源代码import threadingimport sysimport pcapyimport timeimport logging as loggerclass NetMonitor(threading.Thread):_timeout 1classmethoddef get_net_interfaces(cls):return pcapy.findalldevs()def __init__(self, device, bpf_filter):threading.Thread.__init__(self)self.active Trueself._net_monitor pcapy.open_live(device, 65535, 0, 1000) #self.timeout * 1000)self._net_monitor.setfilter(bpf_filter)#self.dumper self.net_monitor.dump_open(pkt_dump.txt)self._current_bytes_rate 0self.total_transfer 0 # total number of Bytes transfered#self._tmp_bytes_per_sec_sum 0 # sums up B/s values from each dispatch iteration (eventually used to calc average value)self._inc 0 # number of dispatch iterations (eventually used to calc average B/s value)#---self._dispatch_bytes_sum 0 # sums up packets size for one dispatch calldef __handle_packet(self, header, data):# method is called for each packet by dispatch call (pcapy)self._dispatch_bytes_sum len(data) #header.getlen() #len(data)#logger.debug(h: ({}, {}, {}), d:{}.format(header.getlen(), header.getcaplen(), header.getts(), len(data)))#self.dumper.dump(header, data)def update(self):self._dispatch_bytes_sum 0# process packetspackets_nr self._net_monitor.dispatch(-1, self.__handle_packet)self.total_transfer self._dispatch_bytes_sumself._inc 1self._current_bytes_rate self._dispatch_bytes_sum # add single dispatch B/s - timeout is 1 sself._tmp_bytes_per_sec_sum self._current_bytes_ratelogger.debug(inc:{}, current rate: {} B/s, avg rate: {} B/s, total:{} B.format(self._inc, self.current_rate, self.avg_rate, self.total_transfer))return self._current_bytes_rate, packets_nrdef get_avg_bytes_rate(self):if self._inc:return self._tmp_bytes_per_sec_sum / self._incelse:return 0def get_current_bytes_rate(self):return self._current_bytes_ratedef run(self):while(self.active):self.update()time.sleep(self._timeout)# average B/s rateavg_rate property(get_avg_bytes_rate)# current B/s ratecurrent_rate property(get_current_bytes_rate)if __name__ __main__:filter .join(sys.argv[2:])print filter#nm0 NetMonitor(pcapy.findalldevs()[0], filter)nm1 NetMonitor(pcapy.findalldevs()[1], filter)nm1.start()start_time time.time()while time.time() - start_time int(sys.argv[1]):print current {} B/s, avg {} B/s, total transfer {} B.format(nm1.current_rate, nm1.avg_rate, nm1.total_transfer)time.sleep(1)nm1.active Falsenm1.join()print total: {}, avg: {}.format(nm1.total_transfer, nm1.avg_rate)任何建议都非常感谢。干杯。
