BadMagicException on single server

[andy_84]

Hi, Benoit!

You could also try to see if the problem still shows up when using multiple threads on the server side and specifying the Ice.ThreadPool.Server.Serialize=1 property.

BadMagicException reproduced.

Could you patch your Ice distribution with this patch and see if the problem still occurs with a debug build and if one of those asserts is hit?

We applied your patch, built Debug configuration - BadMagicException reproduced without any asserts.

Regards, andy

[benoit]

Hi Andy,

Could you run the server under the debugger and break at the line where the exception is raised? You could also add an assert in the exception constructor and then attach to the process. I would be interested to see the attributes of the connection at the time the exception is throw.

Otherwise, I will setup your test case with 8-core Windows 2008 machines and see if I can reproduce on those machines, hopefully I'll have better chances.

Cheers,
Benoit.

[andy_84]

Hi, Benoit!

Could you run the server under the debugger and break at the line where the exception is raised? You could also add an assert in the exception constructor and then attach to the process. I would be interested to see the attributes of the connection at the time the exception is throw.

Good idea! I'll try this on Monday.

Otherwise, I will setup your test case with 8-core Windows 2008 machines and see if I can reproduce on those machines, hopefully I'll have better chances.

Can you clarify - how do you run the test; are you using our binaries or own build? We find very strange that you cannot reproduce BadMagicException while we see it approx every 15 minutes we run the test on a single 8-core (with HT - 16 core) Windows 2008 R2 server.

P.S. Merry Christmas and Happy New Year!!!

Regards, andy

[benoit]

Hi

I used my own build (x64, both tried release/debug builds). The 2 machines I tried on were 4-core machines (one of them was a VM) and both were running Windows 7... I tried on some other hardware (EC2 Windows Server 2008 VMs) and I'm finally able to reproduce. I will debug this now and let you know once I know more.

Cheers,
Benoit.

[andy_84]

Hi, Benoit!

I'm finally able to reproduce

Glad to hear, it's a good New Year gift

I made a dump at the BadMagicException moment and was going to reply to the thread, when saw you've answered. Tell me if you still need it.


Regards, andy

[benoit]

Hi Andy,

Could you please try again your test case after applying the patch attached to this post and re-compiling the Ice library? Thanks!

Cheers,
Benoit

[andy_84]

Hi, Benoit!

Sorry for delay.

1) To make Ice compile, we had to add this members to NativeInfo struct in Network.h:

DWORD count;
int error;

Maybe you forgot to diff this header?

2) After we successfully rebuilt Ice, our client doesn't start, printing an error:

!! 01/10/12 12:41:33.523 client.exe: error: TcpTransceiver.cpp:430: Ice::ConnectionLostException:
connection lost: recv() returned zero

So, we can't run our test with latest patch

Regards, andy

[benoit]

Sorry, here's the correct patch.

Cheers,
Benoit.

[andy_84]

Hi, Benoit!

At last we couldn't find BadMagicExceptions in logs! Seems it works now. I wonder if patched Ice will be available for download or we continue using our custom built binaries?

Regards, andy

[bernard]

Hi Andy,

That's excellent news. This fix will be in our next release.

We do not post binary patches on these forums. If you have a support contract and need a signed binary that incorporates one or more bug fixes, please contact support@zeroc.com.

Best regards,
Bernard

[andy_84]

Hi, Bernard!

Just to know - how soon are you going to release next version of Ice?

Regard, andy