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blackstea
none
Joined: 11 Nov 2004
Posts: 9
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 Posted: Nov 11, 2004 2:11pm Post subject: ssl & zlib with unreal |
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hi all,
I use ssl and zlib option in my network.. but it is small for test stability of it..
I heard that ssl provoke many band transfer.. and zlib option instability of the link between servers.. i think that there are wrong , but i want hear other opinions.. tnx ( excuse my bad english ) |
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codemastr
Idler
Joined: 05 Feb 2004
Posts: 353
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| Posted: Nov 11, 2004 3:09pm Post subject: |
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| Good encryption will almost always increase bandwidth usage. So yes, SSL will increase bandwidth usage, that's just the way encryption works. As for zlib being unstable, I have no idea where you got that idea from. It is quite stable and in fact, zlib compression is now an option in most IRCds. |
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zeke
Idler
Joined: 04 Oct 2003
Posts: 325
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| Posted: Nov 11, 2004 3:53pm Post subject: |
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| i've never had any problems with linking (with ssl+zlib) that i can put down to eiter of these 2, (all my linking issues have been issues that would affect any server link...general lag....bad configuration etc |
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blackstea
none
Joined: 11 Nov 2004
Posts: 9
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| Posted: Nov 11, 2004 5:42pm Post subject: |
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| codemastr, tnx, do you know a approximate % of saving bandwidth? |
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codemastr
Idler
Joined: 05 Feb 2004
Posts: 353
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| Posted: Nov 12, 2004 2:10pm Post subject: |
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| Well, you have compression levels. The higher the level, the more compression. So it depends on which level you choose. |
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nenolod
Idler
Joined: 23 Jan 2004
Posts: 335
Location: A box!
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| Posted: Nov 13, 2004 3:43pm Post subject: |
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Unreal utilizes a modified version of Kalt's ziplink implementation. The modifications were done by the hybrid coders. Kalt's ziplink implementation does have stability issues, which is why it is no longer used in hybrid7/ratbox. Just utilize Valgrind or PurifyPlus and get a lot of I/O going. You'll see memory errors galore.
The issue, like codemastr said is not zlib, it is the code itself. Most IRCd's I have seen with ziplinks are working on rewriting the code, or have already done so.
SSL/TLS will cause more bandwidth to be utilized. This is also true, however, the instability is not in libcrypto or zlib, it is in the ziplink code itself. |
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codemastr
Idler
Joined: 05 Feb 2004
Posts: 353
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| Posted: Nov 14, 2004 3:04pm Post subject: |
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| Actually, we've made several modifications to our ziplink code to fix every memory/IO error we've encountered. |
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