获取网速

get_interface_bytes.c

//
//  NetworkInterface.c
//  wxlive
//
//  Created by 秦 道平 on 16/8/3.
//  Copyright © 2016年 秦 道平. All rights reserved.
//

#include "NetworkInterface.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <ifaddrs.h>
#include <net/if.h>
#include <string.h>

long long get_interface_bytes() {
    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;
        }
    }
    freeifaddrs(ifa_list);
    
    return iBytes + oBytes;
}