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Raw socket promiscuous mode

hi,

i have developped a piece of code that capture packets with raw sockets (winsock). But i want to switch reception mode between "normal" mode and promiscuous mode (using WSAIoctl with SIO_RCVALL_MCAST or SIO_RCVALL option). Is it possible to do that when the socket is already binded? i've already tried this solution:
...
DWORD dwCode = RCVALL_OFF,
dwValue = 0,
dwBytes = 0;
// put off precedent sock option
status = WSAIoctl(sockRaw_, SIO_RCVALL_MCAST, &dwCode, sizeof(dwCode), NULL, 0, &dwBytes, NULL, NULL);
if (status == SOCKET_ERROR)
TRACE("0x%x: SetPromiscuous(SIO_RCVALL_MCAST): WSAIoctl() failed: %d", GetCurrentThreadId(), WSAGetLastError());
dwCode = RCVALL_ON;
// set new sock option
status = WSAIoctl(sockRaw_, SIO_RCVALL, &dwCode, sizeof(dwCode), &dwValue, sizeof(dwValue), &dwBytes, NULL, NULL);
if (status == SOCKET_ERROR)
TRACE("0x%x: SetPromiscuous(SIO_RCVALL): WSAIoctl() failed: %d", GetCurrentThreadId(), WSAGetLastError());
...

It makes no error but does not work. i still receive mutlicast packets. Any suggestions??Is there an another way to do that?

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bkrahmer

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matt31

ASKER

ok thanks but it works really fine now, it was not due to my code but to an option on my network adapter card which wasn't set properly.
(FYI: in practical SIO_RCVALL_MCAST also let you receive packets destined to your own IP...)

bcladd

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