Message based load balancing for no standard message format

Hi Vincent,

I was trying to configure F5 LTM VE 10.1 to do message-based load balancing but unsuccessful so far. I read your post here (https://devcentral.f5.com/Community/GroupDetails/tabid/1082223/asg/50/aft/2161023/showtab/groupforums/Default.aspx). It seems you were doing something similar to what I'm trying to do. I'm wondering if you could help me. The irules I wrote are relatively simple. Basicly, what I want to do is to extract individual messages received over a single TCP connection and forward them to pool members. The messages have a 8-byte header. The last 4 bytes stores the length of message body. I don't need persistence, which makes the load balancing simpler. However, the problem is USER_REQUEST is never fired after "TCP::notify request" is called.

Thank you in advance!

Shu

____________

iRules:

when CLIENT_ACCEPTED {

log local0.debug "Get a connection"

TCP::collect 1000

}

when CLIENT_DATA {

log local0.debug "in CLIENT_DATA"

binary scan [TCP::payload] II head rlen

if {($head & 0x3) == 1} {

if {[TCP::payload length] < $rlen} {

TCP::collect $rlen

log local0.debug "a message is received"

TCP::release $rlen

TCP::notify request

log local0.debug "requested"

}

}

}

when USER_REQUEST {

Dispatch to the pool

log local0.debug "in USER_REQUEST"

pool my_pool

}