There shouldn't be any difference in the TAP-Win32 API between 1.6 and 2.0.
Why don't you try running a debugger or add printfs to a working version of OpenVPN 2.0 so you can see what is being passed in the TAP_IOCTL_CONFIG_POINT_TO_POINT ioctl -- then duplicate that in your custom application. James On Sun, 16 Jan 2005, Harsha V. Madhyastha wrote: > Hi, > > I'm using OpenVPN on Windows XP and I need to set Point-to-Point mode on > the device in order to emulate a "tun" interface (as specified in > http://cvs.sourceforge.net/viewcvs.py/openvpn/openvpn/tap-win32/tapdrvr.c?rev=1.2.2.5) > > As specified in > http://www.tinc-vpn.org/svn/tinc/branches/1.0-gnutls/src/mingw/device.c > and > http://cvs.sourceforge.net/viewcvs.py/openvpn/openvpn/tun.c?rev=1.46 > I used the following code to do this: > > #define TAP_CONTROL_CODE(request, method) \ > CTL_CODE(FILE_DEVICE_PHYSICAL_NETCARD | 8000, request, method, \ > FILE_ANY_ACCESS) > #define TAP_IOCTL_CONFIG_POINT_TO_POINT TAP_CONTROL_CODE(6, METHOD_BUFFERED) > > unsigned long ep[2]; > HANDLE hTAP32; > long len; > > hTAP32 = CreateFile(device_path, GENERIC_READ | GENERIC_WRITE, 0, 0, \ > OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0); > ep[0] = inet_addr("10.0.0.1"); > ep[1] = ep[0] ^ inet_addr("0.0.0.3"); > if (!DeviceIoControl (hTAP32, TAP_IOCTL_CONFIG_POINT_TO_POINT, \ > ep, sizeof (ep), ep, sizeof (ep), &len, NULL))A > { > fprintf (stderr, "ERROR: The TAP-Win32 driver rejected a > DeviceIoControl call to set Point-to-Point mode\n"); > } > > The above call to DeviceIoControl works in the 1.6 version of OpenVPN but > fails in all the 2.0 beta versions. It would be great if any of could let > me know what the cause for the problem could be. > > BTW, thank you very much Charles for replying to my previous post. I guess > the point you raised there was pertinent. I will look into the JVM source > to figure out the root of the problem. > > Thanks! > Harsha > > > ------------------------------------------------------- > The SF.Net email is sponsored by: Beat the post-holiday blues > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. > It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt > _______________________________________________ > Openvpn-devel mailing list > Openvpn-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/openvpn-devel >
