Thanks, Robert, for your work in tracking this down. I've applied the
patches, revision 1767, assuming I used mercurial correctly. :)
--Nick
On Tue, May 14, 2013 at 1:51 AM, Robert Hegner <rheg...@hsr.ch> wrote:
> When I checked the return value of WSAGetLastError() yesterday I forgot to
> start slpd before. I'm sorry for the confusion.
>
> When slpd is running, WSAGetLastError() returns 10040 (WSAEMSGSIZE). This
> return value seems to be expected and is explicitly ignored in the code.
> But then, since xferbytes is -1, the new condition on line 298 fails
> (talking about the latest revision 1766 now).
>
> So since under Windows this error is expected, and since this error says
> that we received more than the 16 bytes we're interested in, we could just
> set xferbytes to 16 in this case, right? Attached you can find my updated
> patches.
>
> That this didn't cause any problems with findsrvs is strange indeed. For
> registering, SLPNetworkRecvMessage() was called five times, and then
> slptool returned with -19. For findsrvs, SLPNetworkRecvMessage() was also
> called five times and also failed to meet the condition on line 298 every
> time, but finally slptool returned the services. Strange...
>
>
>
> Am 13.05.2013 17:59, schrieb Nick Wagner:
>
>> What is confusing me here is why this only happens when registering? An
>> slptool findsrvs doesn't appear to exhibit the problem.
>>
>>
>> On Mon, May 13, 2013 at 10:22 AM, Robert Hegner
>> <rheg...@hsr.ch
>> <mailto:rheg...@hsr.ch>> wrote:
>>
>> Yes I guess your fix for slptool makes more sense.
>>
>> WSAGetLastError() returns 10054 (WSAECONNRESET)
>>
>> http://msdn.microsoft.com/en-**us/library/windows/desktop/**
>> ms740668%28v=vs.85%29.aspx<http://msdn.microsoft.com/en-us/library/windows/desktop/ms740668%28v=vs.85%29.aspx>
>>
>>
>>
>>
>> Am 13.05.2013 17:07, schrieb Nick Wagner:
>> > What is WSAGetLastError returning when you see the recvfrom error?
>> >
>> > And as far as the first patch goes, I believe Jon's intent was to
>> check
>> > for an empty string, not just a null pointer. So I would try:
>> >
>> > if ((cmdline->scopes != 0) && (*cmdline->scopes != 0))
>> > SLPSetProperty("net.slp.**useScopes", cmdline->scopes);
>> >
>> >
>> >
>> >
>> >
>> > On Mon, May 13, 2013 at 7:30 AM, Robert Hegner
>> > <rheg...@hsr.ch
>> <mailto:rheg...@hsr.ch>
>> > <mailto:rheg...@hsr.ch
>>
>> <mailto:rheg...@hsr.ch>>> wrote:
>> >
>> > Ok I spent some more hours on this issue. I can successfully
>> run
>> > revisions 1715 to 1731. But with revision 1732 I get the
>> error -19.
>> > Revision 1732 contains some changes in slp_network.c (among
>> others).
>> > Below you can see how SLPNetworkRecvMessage() (in
>> slp_network.c)
>> > behaves in revision 1731 and 1732:
>> >
>> > Revision 1732:
>> > - select() on line 237 returns 1
>> > - recvfrom() on line 243 returns -1
>> > - therefore the condition on line 276 is false and
>> > SLPNetworkRecvMessage() sets errno to EINVAL and returns -1
>> >
>> > Revision 1731:
>> > - select() on line 237 returns 1
>> > - recvfrom() on line 243 returns -1
>> > - but now on line 276 the condition is true since it does not
>> check
>> > xferbytes as in revision 1732. SLPNetworkRecvMessage() then
>> > continues without causing any errors.
>> >
>> > I don't know what the intention of the changes of revision
>> 1732 was.
>> > And I don't know if recvfrom() on line 243 should not return
>> -1 to
>> > begin with, or if the condition on line 276 in revision 1732 is
>> > incorrect. But I think someone should have a closer look at
>> > SLPNetworkRecvMessage() again.
>> >
>> > Attached you can find my suggested patches based on the latest
>> > Mercurial revision. With these patches it works for me.
>> >
>> >
>> >
>> > Am 13.05.2013 09:29, schrieb Robert Hegner:
>> >
>> > I also did some more investigation on the second issue
>> (error
>> > code -19).
>> >
>> > When I use the beta 2 installer, it seems to work (I can
>> register a
>> > service using slptool without getting the -19 error).
>> >
>> > Then I stopped slpd and replaced the binaries with the
>> ones I
>> > built from
>> > the latest Mercurial revision (cdaeb8) and restarted
>> slpd. Then
>> > I got
>> > the -19 error again.
>> >
>> > Then I uninstalled OpenSLP, built the installer with the
>> latest
>> > Mercurial revision, and installed it with my own installer
>> > again. Also
>> > in this case I get the -19 error.
>> >
>> > So for me this looks like I can confirm the problem that
>> Ren
>> > described
>> > in January (he suspected that a problem was introduced
>> somewhere
>> > between
>> > beta 2 and the current revision).
>> >
>> >
>> >
>> > Am 10.05.2013 13:56, schrieb Robert Hegner:
>> >
>> > Hello,
>> >
>> > I've been using OpenSLP in my project for a while
>> now. This
>> > week I set
>> > up a new computer (Windows 7 64Bit) and I tried to
>> build and
>> > run my
>> > application and OpenSLP on this new machine with
>> VC++2010.
>> > Even though I
>> > have a 64Bit OS I'm building OpenSLP as a 32Bit
>> application,
>> > since my
>> > own application is also 32Bit.
>> >
>> > First I tried the latest version from the Mercurial
>> > repository (cdaeb8).
>> > I was able to build it and slpd seems to work, since
>> > slptool findsrvs service:service-agent
>> > returns one entry with my IP address. However, when I
>> try this:
>> > slptool register service:myserv.x://myhost.com
>> <http://myhost.com>
>> > <http://myhost.com>
>> > (as in the examples of slptool), I get an access
>> violation
>> > (Unhandled
>> > exception at 0x00401643 in slptool.exe: 0xC0000005:
>> Access
>> > violation
>> > reading location 0x00000000.)
>> >
>> > Then I tried an older version (the latest version
>> from the SVN
>> > repository, rev. 1701). I can also build and install
>> slpd,
>> > and I can
>> > also find the service-agent. But when I try to
>> register a
>> > service using
>> > slptool I get error code -19. As far as I know this
>> > indicates a problem
>> > with the communication between slpd and slptool, right?
>> > However, slpd
>> > seems to be running (otherwise I wouldn't find the
>> > service-agent). So I
>> > guess it is a problem with missing privileges or a
>> firewall
>> > problem.
>> > What rules do I need in the Windows Firewall to get
>> OpenSLP
>> > to work? (do
>> > I need rules for slpd or slptool?, ingoing or outgoing?
>> > which port and
>> > protocol?). Unfortunately I cannot completely disable
>> the
>> > firewall for a
>> > test due to group policies, but I can add rules.
>> >
>> > Any hints on how to solve or debug at least one of
>> these
>> > problems would
>> > be much appreciated!
>> >
>> > Cheers,
>> > Robert
>> >
>> >
>> >
>> ------------------------------**__----------------------------**
>> --__------------------
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>> >
>> >
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>> >
>> >
>> ------------------------------**__----------------------------**
>> --__------------------
>> > Learn Graph Databases - Download FREE O'Reilly Book
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>> >
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>> databases and
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>> acclaimed
>> > leaders in the field. The early access version is available
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>> > Download your free book today!
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>> >
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>> >
>> >
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>> ------------------
>> > Learn Graph Databases - Download FREE O'Reilly Book
>> > "Graph Databases" is the definitive new guide to graph databases
>> and
>> > their applications. This 200-page book is written by three
>> acclaimed
>> > leaders in the field. The early access version is available now.
>> > Download your free book today! http://p.sf.net/sfu/neotech_**
>> d2d_may <http://p.sf.net/sfu/neotech_d2d_may>
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>>
>> ------------------------------**------------------------------**
>> ------------------
>> Learn Graph Databases - Download FREE O'Reilly Book
>> "Graph Databases" is the definitive new guide to graph databases and
>> their applications. This 200-page book is written by three acclaimed
>> leaders in the field. The early access version is available now.
>> Download your free book today!
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>>
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>>
>> ------------------------------**------------------------------**
>> ------------------
>> Learn Graph Databases - Download FREE O'Reilly Book
>> "Graph Databases" is the definitive new guide to graph databases and
>> their applications. This 200-page book is written by three acclaimed
>> leaders in the field. The early access version is available now.
>> Download your free book today!
>> http://p.sf.net/sfu/neotech_**d2d_may<http://p.sf.net/sfu/neotech_d2d_may>
>>
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