[Bug 25015] New: Pando downloader hangs

http://bugs.winehq.org/show_bug.cgi?id=25015

Summary: Pando downloader hangs
           Product: Wine
           Version: 1.3.6
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Running the downloader for a game that uses the Pando peer to peer
system, I noticed the UI had hang, the app was still using lots of CPU,
the downloaded file didn't seem to be growing (it was at 1GB out of 4GB),
and the console showed

err:winediag:FILE_CreateFile Too many open files, ulimit -n probably needs to
be increased

lsof showed that PMB.exe has two listening sockets, 25 ESTABLISHED sockets,
96 pipes, one UDP socket, 7 UNIX sockets, 97 regular files, 3 directories,
and one device, for a grand total of 233.  233 is way below ulimit -n (1024).
Perhaps the app had closed lots of peer connections in the hour after
the warning?  Which makes it sound like there isn't a bad leak.
No idea what it's doing with all those pipes, though.

It's possible Pando just needs a higher ulimit.  Or perhaps it can
operate fine with this "low" ulimit, and the hang is not related to
running out of fds.