New subject: [Bug 27337] Raw sockets aren't closed correctly in ICMP monitoring programs

30 May 2011


      http://bugs.winehq.org/show_bug.cgi?id=27337
Summary: Raw sockets aren't closed correctly in ICMP monitoring
                    programs
           Product: Wine
           Version: 1.2.2
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: wine-bugs@winehq.org
        ReportedBy: berroll@mail.ru
Created an attachment (id=34964)
 --> (http://bugs.winehq.org/attachment.cgi?id=34964)
Command line with argument, wine log, netstat output
The problem has occurred with the program NetMap, which is used for the network
monitoring (pinging of multiple hosts in cyclic manner).
[http://www.imach.uran.ru/netmap/index.html]
NetMap under wine is working several minutes, then hangs with an error "Too
many open files".
Using the FAQ at http://wiki.winehq.org/FAQ I have increased the open file
limit by modifying /etc/security/limits.conf:
* hard nofile 16384
* soft nofile 1024
This fix extended working time of NetMap but nevertheless, haven't cured
program's hangs.
Also I noticed that during NetMap usage under wine the amount of opened
connections is enormous and is increasing over time. Perhaps when it exceeds
some limit program hangs. This may be a bug of wine with ICMP handling.
I've made a contact with the author of the program and he explained that NetMap
opens raw socket for the ping request. This action is made using function
IcmpCreateFile of the library icmp.dll. Then this socket is closed by the
function IcmpCloseHandle from the same library. He is sure, that
IcmpCloseHandle is called correctly and the code is executed correctly in
Windows.
NetMap author also mentioned that he tested NetMap and old version of wine
(0.99.6) and never met this problem. But now he checked NetMap with newer
version of wine and confirmed that this problem exists.
In order to check whether this problem is program-related or wine-related I
also tried another program - MetaPing
[http://www.hammer-software.com/metaping.shtml]
It also performs pinging of multiple Internet hosts, like NetMap. And the
problem was the same - enormous amount of opened connections, increasing over
time.
It seems that IcmpCloseHandle is not correctly processed by wine, as these raw
sockets remain opened.
I'm using Ubuntu Linux 10.04 (Lucid) and wine 1.2.2-0ubuntu2~lucid1 from
official Ubuntu repository.
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[Bug 27337] New: Raw sockets aren't closed correctly in ICMP monitoring programs