найти устройство по умолчанию для захвата (find the default device on which to capture)
Имя (Name)
pcap_lookupdev - find the default device on which to capture
Синопсис (Synopsis)
#include <pcap/pcap.h>
char errbuf[PCAP_ERRBUF_SIZE];
[DEPRECATED] char *pcap_lookupdev(char *errbuf);
Описание (Description)
This interface is obsoleted by pcap_findalldevs(3PCAP). To find
a default device on which to capture, call pcap_findalldevs()
and, if the list it returns is not empty, use the first device in
the list. (If the list is empty, there are no devices on which
capture is possible.)
If pcap_init(3PCAP) has been called, this interface always
returns NULL.
pcap_lookupdev() returns a pointer to a string giving the name of
a network device suitable for use with pcap_create(3PCAP) and
pcap_activate(3PCAP), or with pcap_open_live(3PCAP), and with
pcap_lookupnet(3PCAP). If there is an error, or if
pcap_init(3PCAP) has been called, NULL is returned and errbuf is
filled in with an appropriate error message. errbuf is assumed
to be able to hold at least PCAP_ERRBUF_SIZE chars.
Смотри также (See also)
pcap(3PCAP)
Ошибки (баги) (Bugs)
The pointer returned by pcap_lookupdev() points to a static
buffer; subsequent calls to pcap_lookupdev() in the same thread,
or calls to pcap_lookupdev() in another thread, may overwrite
that buffer.
In WinPcap and Npcap, this function may return a UTF-16 string
rather than an ASCII or UTF-8 string.
