libpcap编程

.pro文件中的libpcap.a放入了项目里面

TEMPLATE = app
CONFIG += console
CONFIG -= app_bundle
CONFIG -= qt
LIBS +=$${PWD}/libpcap.a
SOURCES += main.c

1------>libpcap获取本地所有设备---网卡

#include <stdio.h>

#include <pcap.h>
int main(void)
{
    int i=0,devid;
    char error_content[PCAP_ERRBUF_SIZE];
    pcap_if_t *alldevs, *pdev;
    pcap_findalldevs(&alldevs, error_content);
    for (pdev = alldevs; pdev; pdev=pdev->next)
    printf("#%d: %s---%s\n", ++i, pdev->name, pdev->description? pdev->description:"null description");
    printf("select a device: "); scanf("%d", &devid);
    pdev=alldevs; while (--devid) pdev=pdev->next;
    printf("Selected %s\n", pdev->name);
    return 0;
}