Gianluca - I look at lpAdapter in the debugger, it is not NULL for the WAN adapter.
Thanks. - Ed Remmell Treck, Inc. (formerly Elmic Systems, USA) Best of Show Winner, ESC 2003 > -----Original Message----- > From: Gianluca Varenni [mailto:[EMAIL PROTECTED] > Sent: Thursday, January 27, 2005 5:19 AM > To: winpcap-users@winpcap.polito.it > Subject: [>>> SPAM <<<] - Re: [WinPcap-users] Bug in > v3.1beta4 of winpcap? Crash when open and close WAN adapter - > Email found in subject > > Hi Ed. > > How can you be sure that lpAdapter is not NULL? > > The error message you sent seems an access to a null pointer.... > > I've tried to replicate this issue on my machine, and a > similar problem occurs if lpAdapter is NULL. > > Have a nice day > GV > > > ----- Original Message ----- > From: "Ed Remmell" <[EMAIL PROTECTED]> > To: <winpcap-users@winpcap.polito.it> > Sent: Saturday, January 15, 2005 2:17 AM > Subject: [WinPcap-users] Bug in v3.1beta4 of winpcap? Crash > when open and close WAN adapter > > > Dear winpcap team - > > On Win32 (I'm running Win XP Pro with the latest MS service > packs applied), I've noted that your latest v3.1beta4 release > of winpcap will crash if I execute the following sequence of > packet.dll API calls on a WAN adapter: > > lpAdapter = PacketOpenAdapter(adapterName); > PacketCloseAdapter(lpAdapter); > > lpAdapter is of course not NULL. After the call to > PacketOpenAdapter, I look at the structure that lpAdapter > points to and lpAdapter->pWanAdapter is non-NULL, indicating > that it is a WAN adapter. adapterName in this case is > "\Device\NPF_GenericNdisWanAdapter". > > When the code crashes somewhere in PacketCloseAdapter, the > error message I get in the Microsoft Visual C++ debugger is: > > "Unhandled exception at 0x7c918fea in TreckDemo32d18.exe: > 0xC0000005: Access violation writing location 0x00000010." > > If I try this exact same sequence of calls with a non-WAN > adapter (lpAdapter->pWanAdapter is NULL), it works perfectly fine. > > I'm not exactly sure how I'm going to code around this > problem. Right now, what comes to mind is doing a string > search in the adapterName to look for "WanAdapter" and if > found then don't try opening the adapter because of this bug. > That's obviously a hack, I'd prefer if you instead fix this. > > Thanks. > - Ed Remmell > > Treck, Inc. (formerly Elmic Systems, USA) > > Best of Show Winner, ESC 2003 > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.6.12 - Release Date: 1/14/2005 > > > > --- > Treck, Inc. - Confidentiality Notice > > This electronic transmission may contain information that is > proprietary or > confidential. You are hereby notified that any > dissemination, distribution > or duplication of this electronic transmission to some other > entity, without > the expressed written consent of Treck, Inc. is strictly > prohibited, unless > the contents of this electronic transmission specifically > authorizes you to > do so. If your receipt of this electronic transmission is in > error, please > notify the corporate offices of Treck, Inc. immediately by > calling (513) > 528-5732, or by reply to this transmission. > > > > > ====================== > 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] > ====================== > > > > > > ================================================================== > 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] > ================================================================== > > -- > No virus found in this incoming message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.7.4 - Release Date: 1/25/2005 > > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.7.4 - Release Date: 1/25/2005 ================================================================== 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] ==================================================================
