I´m using the program below, running as Win32 console application. The WinPcap version is 3.1 beta4 (packet.dll version 3.1.0.24) running on Win2000, SP4. (For clarity, I have removed all stuff not related to WinPcap.)
The program runs fine when running stand-alone. However, when running under the Visual Studio.NET 2003 debugger, the call to pcap_findalldevs_ex causes an error "Unhandled exception at 0x6a55ac84: 0xC0000005: Access violation reading location 0x6a55ac84." This happens whenever a breakpoint is set anywhere before the call to pcap_findalldevs_ex. When no breakpoint is set, the program runs ok. I have seen some similar problems reportd in older threads, but I have not found any solution. Does anybody have a clue? Bernard int _tmain(int argc, _TCHAR* argv[]) { pcap_if_t *alldevs; pcap_if_t *xcpdev; char errbuf[PCAP_ERRBUF_SIZE+1]; u_char packet[1500]; int i; printf("Starting _tmain\n"); /* Retrieve the interfaces list */ if (pcap_findalldevs_ex("rpcap://", NULL, &alldevs, errbuf) == -1) { fprintf(stderr,"Error in pcap_findalldevs_ex: %s\n",errbuf); exit(1); } /* Scan the list printing every entry */ for(xcpdev=alldevs;xcpdev;xcpdev=xcpdev->next) { pcap_addr_t *a = xcpdev->addresses; if (a && a->addr) { if (((struct sockaddr_in *)a->addr)->sin_addr.s_addr == 0x02B2A8C0) { printf("\tDescription: %s\n",xcpdev->description); break; } } } if (!xcpdev) { printf("Not found adapter with IP address 192.168.178.2\n"); return 2; } /* Open the output device */ if ( (fp= pcap_open(xcpdev->name, // name of the device 100, // portion of the packet to capture (only the first 100 bytes) PCAP_OPENFLAG_PROMISCUOUS, // promiscuous mode 1000, // read timeout NULL, // authentication on the remote machine errbuf // error buffer ) ) == NULL) { fprintf(stderr,"\nUnable to open the adapter. %s is not supported by WinPcap\n", argv[1]); return -2; } /* ... do dome receive and transmit here ... */ } -- +++ Sparen Sie mit GMX DSL +++ http://www.gmx.net/de/go/dsl AKTION für Wechsler: DSL-Tarife ab 3,99 EUR/Monat + Startguthaben ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/winpcap-users@winpcap.polito.it/ To unsubscribe use mailto: [EMAIL PROTECTED] ==================================================================