Force a buffer in <2GB memory and always copy into/out of that buffer? Thanks,
Andreas > On Mar 25, 2015, at 11:17 PM, Randell Jesup <rjesup.n...@jesup.org> wrote: > > Thanks to detective work by a subscriber to dev.media (Tor-Einar > Jarnbjo), we've found the cause of unexplained ICE (NAT-traversal) > failures in WebRTC on Windows (bug 1107702). This may also affect the > code in netwerk that tracks the network link status. > > It turns out that 32bit Windows programs with the large-address-aware > flag (to use >2GB of memory) will fail calls to > GetHostByName/GetHostByAddress/GetAdaptersInfo/GetAdaptersAddresses *if* > you're currently using >2GB of process memory (likely it's if the buffer > you pass in is above the 2GB point). > > This bug (http://support.microsoft.com/en-us/kb/2588507) affects > Vista/Server2008/Win7, and unfortunately seems to only be fixable by a > user-installation of a hotfix. :-( > > We're pretty sure it's the cause of some previously-unexplained ICE > failures in WebRTC/Hello. > > Since switching all Windows64 Firefox installs to 64-bit isn't on a > short-term roadmap, and there is no reasonable technical workaround at > the code level we know of, our only other options are to drop >2GB > support in Windows (ouch) or lean heavily on Microsoft to ship the fix > to all Windows users affected in their automatic updates. > > The only other idea I can think of would be to proxy all such uses to an > entire separate *process*. I can't tell you how sick it makes me to > suggest that... Anyone have a better idea? Or does anyone want to drop > above-2GB support? > > -- > Randell Jesup, Mozilla Corp > remove "news" for personal email > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
