Re: [lvs-users] Layer-7 udp routing or no schedular for udp traffic

To: " users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] Layer-7 udp routing or no schedular for udp traffic
From: "Sameer Garg" <sameer.garg@xxxxxxxxx>
Date: Sat, 24 Nov 2007 12:19:12 +0530
Hey Mog,

Just a thought? How hard would it be to replicate the sessions across
multiple servers? That way could use Layer 4 and not worry about


On Nov 23, 2007 6:56 PM, mog <mog@xxxxxxxx> wrote:
> Hello all hope this doesn't come to everyone thrice, apparently lvs
> mailing list doesn't like pgp signatures...
>                 I have only recently found out about all of your great
>         work,
>         thanks to
>         any and all who have worked on the project thus far.  My
>         questions
>         revolve around an application I am building.  It is a chat
>         server that
>         talks over udp.  It is not a one packet per session protocol
>         unfortunately.  So the current lvs way of routing for 300
>         seconds or so
>         doesn't really work for me I am hoping there is a solution i am
>         missing.
>         Here are the two solutions I see.
>                 So I am able to maintain state across my real servers so
>         I could
>         have
>         the director send all packets to all real servers, and then the
>         servers
>         would decide how to properly respond.  Is there a method for
>         this?
>                 My second solution would be require work for sure, have
>         the
>         director
>         look at the first 4 bytes of the udp packet, as that contains
>         all the
>         session information i would need, and could route to the correct
>         real
>         server or another real server if the correct real server died.
>         I
>         realize this would require work but would be beneficial to
>         people
>         needing to do things like sip or h.323 and other session based
>         udp
>         connections.
>         Mog
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