iOS-网络流量统计
最近要做一个网络流量统计的功能。网上找了下，有直接可以用的。呵呵。
原理：通过函数getifaddrs来得到系统网络接口的信息，网络接口的信息, 包含在if_data字段中, 有很多信息, 但我现在只关心ifi_ibytes, ifi_obytes, 应该就是接收到的字节数和发送的字节数, 加起来就是流量了. 还发现, 接口的名字, 有en, pdp_ip, lo等几种形式, en应该是wifi, pdp_ip大概是3g或者gprs, lo是环回接口, 通过名字区分可以分别统计
直接上代码：
添加头
#include <ifaddrs.h>
#include <sys/socket.h>
#include <net/if.h>
1.3G/GPRS流量统计
int getGprs3GFlowIOBytes() {
struct ifaddrs *ifa_list= 0, *ifa;
if (getifaddrs(&ifa_list)== -1) {
return 0;
}
uint32_t iBytes =0;
uint32_t oBytes =0;
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 (!strcmp(ifa->ifa_name,"pdp_ip0")) {
struct if_data *if_data = (struct if_data*)ifa->ifa_data;
iBytes += if_data->ifi_ibytes;
oBytes += if_data->ifi_obytes;
NSLog(@"%s :iBytes is %d, oBytes is %d",ifa->ifa_name, iBytes, oBytes);
}
}
freeifaddrs(ifa_list);
return iBytes + oBytes;
}
返回的结果为byte
2.WIFI流量统计功能
- (long long int)getInterfaceBytes {
struct ifaddrs *ifa_list = 0, *ifa;
if (getifaddrs(&ifa_list) == -1) {
return 0;
}
uint32_t iBytes = 0;
uint32_t oBytes = 0;
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;
/* Not a loopback device. */
if (strncmp(ifa->ifa_name, "lo", 2))
{
struct if_data *if_data = (struct if_data *)ifa->ifa_data;
iBytes += if_data->ifi_ibytes;
oBytes += if_data->ifi_obytes;
// NSLog(@"%s :iBytes is %d, oBytes is %d",
// ifa->ifa_name, iBytes, oBytes);
}
}
freeifaddrs(ifa_list);
return iBytes+oBytes;
}
以上获取的数据可以通过以下方式进行单位转换
NSString *bytesToAvaiUnit(int bytes) {
if(bytes < 1024) // B {
return [NSString stringWithFormat:@"%dB", bytes];
}
else if(bytes >= 1024 && bytes < 1024 * 1024) // KB {
return [NSString stringWithFormat:@"%.1fKB", (double)bytes / 1024];
}
else if(bytes >= 1024 * 1024 && bytes < 1024 * 1024 * 1024) // MB {
return [NSString stringWithFormat:@"%.2fMB", (double)bytes / (1024 * 1024)];
}
else // GB{
return [NSString stringWithFormat:@"%.3fGB", (double)bytes / (1024 * 1024 * 1024)];
}
}