[jdev] Testing stream compression (was: Jive Messenger is now Wildfire Server)

[Joe Hildebrand]

It's been a while since we cut a daily build, for a variety of reasons.

I'm in India this week, and didn't bring a windows box to make a  
build, but perhaps PGM can send you a binary.  Otherwise, I'll send  
one to you this weekend.

On Jan 9, 2006, at 2:18 AM, Gaston Dombiak wrote:

> Hey Joe,
>
> I have compression running in Wildfire. So far I tested it with  
> Pandion and
> would like to test it with Exodus. Can you provide me a binary  
> version of
> Exodus that supports stream compression? FYI, I'm using Exodus  
> 0.9.1.1.
>
> Thanks,
>
>   -- Gato
>
> "Joe Hildebrand" <hildjj at gmail.com> wrote in message
> news:E66B3B67-311B-4126-826B-94905B3EC69C at gmail.com...
>> The head of Exodus CVS implements -138.
>>
>> On Dec 18, 2005, at 2:23 PM, Matt Tucker wrote:
>>
>>> Tjil,
>>>
>>> Thanks for the link. I filed the following issue:
>>>
>>> http://www.jivesoftware.org/issues/browse/JM-493
>>>
>>> It sounds like using Jzlib is the right approach. The main  
>>> problem we
>>> ran into when committing stream compression support was a lack  
>>> of  other
>>> implementations to test against for compatibility. Does anybody   
>>> know of
>>> clients that support the JEP that we could test with?
>>>
>>> Thanks,
>>> Matt
>>>
>>>> -----Original Message-----
>>>> From: jdev-bounces at jabber.org
>>>> [mailto:jdev-bounces at jabber.org] On Behalf Of Tijl Houtbeckers
>>>> Sent: Sunday, December 18, 2005 11:59 AM
>>>> To: Jabber software development list
>>>> Subject: Re: [jdev] [ANN] Jive Messenger is now Wildfire Server
>>>>
>>>> On Sun, 18 Dec 2005 20:07:54 +0100, Jakob Schroeter
>>>> <js at camaya.net> wrote:
>>>>
>>>>> Indeed, debug.log contains the following:
>>>>>
>>>>>  ...
>>>>>  java.util.zip.ZipException: no current ZIP entry  at
>>>>> java.util.zip.ZipOutputStream.write(Unknown Source) ...
>>>>
>>>> Now, I haven't been looking at the Wildfire source or
>>>> anything, but it's highly unlikely you can write a zlib
>>>> compatible (as specified in the stream compression JEP)
>>>> output with a ZipOutputStream, since that writes output
>>>> specific to the ZIP file format. For "pure" ZLIB you can use
>>>> DeflaterOutputStream and InflaterInputStream.
>>>> (ZipOutputStream and ZipInputStream actually extend these).
>>>> However AFAIK these still do not give you the ability to do
>>>> "partial flushes" on your output which is needed to get good
>>>> compression for XMPP.
>>>>
>>>> Thankfully, there is a lib available to do this:
>>>> http://www.jcraft.com/jzlib/index.html (also explains the
>>>> problem with the Sun implementation a bit more). It's also
>>>> pure Java so you won't be vonurable to any ZLIB exploits.
>>>>
>>
>>
>
>
>