GZipStream in .NET is throwing an exception

  • Thread starter Thread starter Arnie
  • Start date Start date
A

Arnie

Folks,



The GZipStream class in .NET is throwing an exception during an OS
unseal/power up (first boot experience). The .NET system is fully up as
other apps seem to run fine.



Our code works fine when testing it on a PC that is already up.



After googling we found some people having similar issues when using
SQLServer ... but we are not using it.



Has anyone seen this?



-jeff





.........





I think we could use some advice/analysis from Microsoft on this stack
trace, which is showing an exception from the GZipStream implementation. I
have Googled this and only found issues with people apparently misusing
SQLServer, nothing relating to compression/decompression. This occurs
occasionally during an OS unseal/power up:



......................Module: System.Runtime.Remoting.Proxies.RealProxy



Exception 1: System.IndexOutOfRangeException

Message: Index was outside the bounds of the array.

Source: System

Site: Void CreateTable()

*** Stack Trace ***



Server stack trace:

at System.IO.Compression.HuffmanTree.CreateTable()

at System.IO.Compression.HuffmanTree..ctor(Byte[] codeLengths)

at System.IO.Compression.Inflater.DecodeDynamicBlockHeader()

at System.IO.Compression.Inflater.Decode()

at System.IO.Compression.Inflater.Inflate(Byte[] bytes, Int32 offset,
Int32 length)

at System.IO.Compression.DeflateStream.Read(Byte[] array, Int32 offset,
Int32 count)

at System.IO.Compression.GZipStream.Read(Byte[] array, Int32 offset,
Int32 count)
 
You'll have to be more specific. What is the GZipStream instance attempting
to do? When exactly does the application start? What is the exception?

--
HTH,

Kevin Spencer
Chicken Salad Surgeon
Microsoft MVP
 
See the exception at the end of the thread.

"Index was outside the bounds of the array" ...

It is doing a simple unzip of a compressed file/data.

It works fine when running on a PC ... it is failing during the "unseal"
phase of the first boot experience (when a customer gets their new PC and
turns it on the first time ... we run a few things).

I'm assuming this is more of a system question than a .NET question but
wanted to try here anyways.

-jeff


Kevin Spencer said:
You'll have to be more specific. What is the GZipStream instance
attempting to do? When exactly does the application start? What is the
exception?

--
HTH,

Kevin Spencer
Chicken Salad Surgeon
Microsoft MVP

Arnie said:
Folks,



The GZipStream class in .NET is throwing an exception during an OS
unseal/power up (first boot experience). The .NET system is fully up as
other apps seem to run fine.



Our code works fine when testing it on a PC that is already up.



After googling we found some people having similar issues when using
SQLServer ... but we are not using it.



Has anyone seen this?



-jeff





........





I think we could use some advice/analysis from Microsoft on this stack
trace, which is showing an exception from the GZipStream implementation.
I have Googled this and only found issues with people apparently misusing
SQLServer, nothing relating to compression/decompression. This occurs
occasionally during an OS unseal/power up:



.....................Module: System.Runtime.Remoting.Proxies.RealProxy



Exception 1: System.IndexOutOfRangeException

Message: Index was outside the bounds of the array.

Source: System

Site: Void CreateTable()

*** Stack Trace ***



Server stack trace:

at System.IO.Compression.HuffmanTree.CreateTable()

at System.IO.Compression.HuffmanTree..ctor(Byte[] codeLengths)

at System.IO.Compression.Inflater.DecodeDynamicBlockHeader()

at System.IO.Compression.Inflater.Decode()

at System.IO.Compression.Inflater.Inflate(Byte[] bytes, Int32 offset,
Int32 length)

at System.IO.Compression.DeflateStream.Read(Byte[] array, Int32 offset,
Int32 count)

at System.IO.Compression.GZipStream.Read(Byte[] array, Int32 offset,
Int32 count)
Click to expand...
Click to expand...
 
Arnie said:
See the exception at the end of the thread.

"Index was outside the bounds of the array" ...

It is doing a simple unzip of a compressed file/data.
Click to expand...

Are you sure it can access that file? Might there be an issue with
permissions not having yet been set during the "unseal" phase?
It works fine when running on a PC ... it is failing during the
"unseal" phase of the first boot experience (when a customer gets
their new PC and turns it on the first time ... we run a few things).

I'm assuming this is more of a system question than a .NET question
but wanted to try here anyways.
Click to expand...

You could try SharpZipLib instead
http://www.icsharpcode.net/OpenSource/SharpZipLib/

Andrew
 
Thanks for the ideas Andrew. We'll check on the permissions.

Here is a bit more details in case it triggers something for the group.


What is the GZipStream instance attempting to do?

at System.IO.Compression.GZipStream.Read(Byte[] array, Int32 offset,
Int32 count)

When exactly does the application start?

What is the exception?"


It should be sufficient for Microsoft to see that we are simply calling
System.IO.Compression.GZipStream.Read().
 
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