iOS OC 监听当前wifi网速

思路：先获取到总的流量信息，然后用当前的总下行流量减去上一秒的下行流量得到网速！

具体实现在以下三个方法！

//获取下行速度

- (void)getByteRate {

longlongintrate;

longlongintcurrentBytes = [selfgetInterfaceBytes];

if(self.lastBytes) {

//用上当前的下行总流量减去上一秒的下行流量达到下行速录

rate = currentBytes -self.lastBytes;

}else{

self.isFirstRate=NO;

}

//保存上一秒的下行总流量

self.lastBytes= [selfgetInterfaceBytes];

//格式化一下

NSString*rateStr = [selfformatNetWork:rate];

NSLog(@"当前网速%@",rateStr);

self.playerControl.LoadingView.rateLabel.text= [NSStringstringWithFormat:@"%@",rateStr];

}

//获取数据流量详情

- (longlongint)getInterfaceBytes {

structifaddrs*ifa_list =0, *ifa;

if(getifaddrs(&ifa_list) == -1) {

return0;

}

uint32_tiBytes =0;//下行

uint32_toBytes =0;//上行

for(ifa = ifa_list; ifa; ifa = ifa->ifa_next) {

if(AF_LINK!= ifa->ifa_addr->sa_family)

continue;

if(!(ifa->ifa_flags&IFF_UP) && !(ifa->ifa_flags&IFF_RUNNING))

continue;

if(ifa->ifa_data==0)

continue;

if(strncmp(ifa->ifa_name,"lo",2)) {

structif_data*if_data = (structif_data*)ifa->ifa_data;

iBytes += if_data->ifi_ibytes;

oBytes += if_data->ifi_obytes;

}

}

freeifaddrs(ifa_list);

//返回下行的总流量

returniBytes;

}

//格式化方法

- (NSString*)formatNetWork:(longlongint)rate {

if(rate <1024) {

return[NSStringstringWithFormat:@"%lldB/秒", rate];

}elseif(rate >=1024&& rate <1024*1024) {

return[NSStringstringWithFormat:@"%.1fKB/秒", (double)rate /1024];

}elseif(rate >=1024*1024&& rate <1024*1024*1024){

return[NSStringstringWithFormat:@"%.2fMB/秒", (double)rate / (1024*1024)];

}else{

return@"10Kb/秒";

};

}