티스토리 뷰
https://docs.microsoft.com/ko-kr/windows/win32/api/iphlpapi/nf-iphlpapi-getadaptersaddresses?redirectedfrom=MSDN
GetAdaptersAddresses function (iphlpapi.h) - Win32 apps
Retrieves the addresses associated with the adapters on the local computer.
docs.microsoft.com
추가>
프로그램 실행할때 인수를 전달해야 하는데 잘 작동안되어
아래 코드에서 46~57행을 주석처리하고 바로 안래에 family = AF_INET; 을 추가해서 실행함.
공유기에서 포트 속도를 100MBps 로 수동 설정하고 실행하면 100,000,000
공유기에서 자동으로 1GBps 로 되어 있으면 1,000,000,000
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#include <winsock2.h>
#include <iphlpapi.h>
#include <stdio.h>
#include <stdlib.h>
// Link with Iphlpapi.lib
#pragma comment(lib, "IPHLPAPI.lib")
#define WORKING_BUFFER_SIZE 15000
#define MAX_TRIES 3
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
/* Note: could also use malloc() and free() */
int __cdecl main(int argc, char** argv)
{
/* Declare and initialize variables */
DWORD dwSize = 0;
DWORD dwRetVal = 0;
unsigned int i = 0;
// Set the flags to pass to GetAdaptersAddresses
ULONG flags = GAA_FLAG_INCLUDE_PREFIX;
// default to unspecified address family (both)
ULONG family = AF_UNSPEC;
LPVOID lpMsgBuf = NULL;
PIP_ADAPTER_ADDRESSES pAddresses = NULL;
ULONG outBufLen = 0;
ULONG Iterations = 0;
PIP_ADAPTER_ADDRESSES pCurrAddresses = NULL;
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = NULL;
PIP_ADAPTER_ANYCAST_ADDRESS pAnycast = NULL;
PIP_ADAPTER_MULTICAST_ADDRESS pMulticast = NULL;
IP_ADAPTER_DNS_SERVER_ADDRESS* pDnServer = NULL;
IP_ADAPTER_PREFIX* pPrefix = NULL;
if (argc != 2) {
printf(" Usage: getadapteraddresses family\n");
printf(" getadapteraddresses 4 (for IPv4)\n");
printf(" getadapteraddresses 6 (for IPv6)\n");
printf(" getadapteraddresses A (for both IPv4 and IPv6)\n");
exit(1);
}
if (atoi(argv[1]) == 4)
family = AF_INET;
else if (atoi(argv[1]) == 6)
family = AF_INET6;
printf("Calling GetAdaptersAddresses function with family = ");
if (family == AF_INET)
printf("AF_INET\n");
if (family == AF_INET6)
printf("AF_INET6\n");
if (family == AF_UNSPEC)
printf("AF_UNSPEC\n\n");
// Allocate a 15 KB buffer to start with.
outBufLen = WORKING_BUFFER_SIZE;
do {
pAddresses = (IP_ADAPTER_ADDRESSES*)MALLOC(outBufLen);
if (pAddresses == NULL) {
printf
("Memory allocation failed for IP_ADAPTER_ADDRESSES struct\n");
exit(1);
}
dwRetVal =
GetAdaptersAddresses(family, flags, NULL, pAddresses, &outBufLen);
if (dwRetVal == ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = NULL;
}
else {
break;
}
Iterations++;
} while ((dwRetVal == ERROR_BUFFER_OVERFLOW) && (Iterations < MAX_TRIES));
if (dwRetVal == NO_ERROR) {
// If successful, output some information from the data we received
pCurrAddresses = pAddresses;
while (pCurrAddresses) {
printf("\tLength of the IP_ADAPTER_ADDRESS struct: %ld\n",
pCurrAddresses->Length);
printf("\tIfIndex (IPv4 interface): %u\n", pCurrAddresses->IfIndex);
printf("\tAdapter name: %s\n", pCurrAddresses->AdapterName);
pUnicast = pCurrAddresses->FirstUnicastAddress;
if (pUnicast != NULL) {
for (i = 0; pUnicast != NULL; i++)
pUnicast = pUnicast->Next;
printf("\tNumber of Unicast Addresses: %d\n", i);
}
else
printf("\tNo Unicast Addresses\n");
pAnycast = pCurrAddresses->FirstAnycastAddress;
if (pAnycast) {
for (i = 0; pAnycast != NULL; i++)
pAnycast = pAnycast->Next;
printf("\tNumber of Anycast Addresses: %d\n", i);
}
else
printf("\tNo Anycast Addresses\n");
pMulticast = pCurrAddresses->FirstMulticastAddress;
if (pMulticast) {
for (i = 0; pMulticast != NULL; i++)
pMulticast = pMulticast->Next;
printf("\tNumber of Multicast Addresses: %d\n", i);
}
else
printf("\tNo Multicast Addresses\n");
pDnServer = pCurrAddresses->FirstDnsServerAddress;
if (pDnServer) {
for (i = 0; pDnServer != NULL; i++)
pDnServer = pDnServer->Next;
printf("\tNumber of DNS Server Addresses: %d\n", i);
}
else
printf("\tNo DNS Server Addresses\n");
printf("\tDNS Suffix: %wS\n", pCurrAddresses->DnsSuffix);
printf("\tDescription: %wS\n", pCurrAddresses->Description);
printf("\tFriendly name: %wS\n", pCurrAddresses->FriendlyName);
if (pCurrAddresses->PhysicalAddressLength != 0) {
printf("\tPhysical address: ");
for (i = 0; i < (int)pCurrAddresses->PhysicalAddressLength;
i++) {
if (i == (pCurrAddresses->PhysicalAddressLength - 1))
printf("%.2X\n",
(int)pCurrAddresses->PhysicalAddress[i]);
else
printf("%.2X-",
(int)pCurrAddresses->PhysicalAddress[i]);
}
}
printf("\tFlags: %ld\n", pCurrAddresses->Flags);
printf("\tMtu: %lu\n", pCurrAddresses->Mtu);
printf("\tIfType: %ld\n", pCurrAddresses->IfType);
printf("\tOperStatus: %ld\n", pCurrAddresses->OperStatus);
printf("\tIpv6IfIndex (IPv6 interface): %u\n",
pCurrAddresses->Ipv6IfIndex);
printf("\tZoneIndices (hex): ");
for (i = 0; i < 16; i++)
printf("%lx ", pCurrAddresses->ZoneIndices[i]);
printf("\n");
printf("\tTransmit link speed: %I64u\n", pCurrAddresses->TransmitLinkSpeed);
printf("\tReceive link speed: %I64u\n", pCurrAddresses->ReceiveLinkSpeed);
pPrefix = pCurrAddresses->FirstPrefix;
if (pPrefix) {
for (i = 0; pPrefix != NULL; i++)
pPrefix = pPrefix->Next;
printf("\tNumber of IP Adapter Prefix entries: %d\n", i);
}
else
printf("\tNumber of IP Adapter Prefix entries: 0\n");
printf("\n");
pCurrAddresses = pCurrAddresses->Next;
}
}
else {
printf("Call to GetAdaptersAddresses failed with error: %d\n",
dwRetVal);
if (dwRetVal == ERROR_NO_DATA)
printf("\tNo addresses were found for the requested parameters\n");
else {
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, dwRetVal, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
// Default language
(LPTSTR)&lpMsgBuf, 0, NULL)) {
printf("\tError: %s", lpMsgBuf);
LocalFree(lpMsgBuf);
if (pAddresses)
FREE(pAddresses);
exit(1);
}
}
}
if (pAddresses) {
FREE(pAddresses);
}
return 0;
}
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cs |
실행결과>
Calling GetAdaptersAddresses function with family = AF_UNSPEC
Length of the IP_ADAPTER_ADDRESS struct: 376
IfIndex (IPv4 interface): 11
Adapter name: {68A7A23A-****-****-****-************}
Number of Unicast Addresses: 2
No Anycast Addresses
Number of Multicast Addresses: 10
Number of DNS Server Addresses: 2
DNS Suffix:
Description: Intel(R) Ethernet Connection (2) I219-LM
Friendly name: Physical address: DC-4A-3E-**-**-**
Flags: 449
Mtu: 1500
IfType: 6
OperStatus: 1
Ipv6IfIndex (IPv6 interface): 11
ZoneIndices (hex): b b b b 1 1 1 1 1 1 1 1 1 1 0 1
Transmit link speed: 1000000000
Receive link speed: 1000000000
Number of IP Adapter Prefix entries: 8
Length of the IP_ADAPTER_ADDRESS struct: 376
IfIndex (IPv4 interface): 1
Adapter name: {6902070E-****-****-***-************}
Number of Unicast Addresses: 2
No Anycast Addresses
Number of Multicast Addresses: 2
Number of DNS Server Addresses: 3
DNS Suffix:
Description: Software Loopback Interface 1
Friendly name: Loopback Pseudo-Interface 1
Flags: 385
Mtu: 4294967295
IfType: 24
OperStatus: 1
Ipv6IfIndex (IPv6 interface): 1
ZoneIndices (hex): 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1
Transmit link speed: 1073741824
Receive link speed: 1073741824
Number of IP Adapter Prefix entries: 7
Length of the IP_ADAPTER_ADDRESS struct: 376
IfIndex (IPv4 interface): 21
Adapter name: {F3342027-****-****-****-************}
Number of Unicast Addresses: 2
No Anycast Addresses
Number of Multicast Addresses: 8
Number of DNS Server Addresses: 3
DNS Suffix:
Description: Hyper-V Virtual Ethernet Adapter
Friendly name: vEthernet (Default Switch)
Physical address: 00-15-5D-**-**-**
Flags: 448
Mtu: 1500
IfType: 6
OperStatus: 1
Ipv6IfIndex (IPv6 interface): 21
ZoneIndices (hex): 15 15 15 15 1 1 1 1 1 1 1 1 1 1 0 1
Transmit link speed: 10000000000
Receive link speed: 10000000000
Number of IP Adapter Prefix entries: 8