Device-watchdog-Answer AVP

root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm rule myrule
ltm rule myrule {
    when CLIENT_ACCEPTED {
    log local0. "[TCP::remote_port]-[TCP::local_port]"

     Device Watchdog (in hex)
    set DWA_head 010000400000011800000000
    origin host: BIG-IP 4249472d4950
    origin realm: test.com 746573742e636f6d
    set DWA_avp 0000010c4000000c000007d1000001084000000e4249472d495000000000012840000010746573742e636f6d

    TCP::collect
}
when CLIENT_DATA {
    while { [TCP::payload length] > 20 } {
        binary scan [TCP::payload] IIIII a b c d e
        set comcode [ expr $b & 0xffffff ]
        set rflag [expr ($b >> 31) & 1 ]
        set mlen [ expr $a & 0xffffff ]
        if { [TCP::payload length] < $mlen }{
            TCP::collect
            return
        }
        switch $comcode {
            280 {
                if { $rflag } {
                    log local0. "reply to watchdog from [IP::remote_addr]"
                    binary scan [TCP::payload] x8IH8H8 a h e
                    TCP::payload replace 0 $mlen ""
                    TCP::respond [binary format H* ${DWA_head}$h$e${DWA_avp} ]
                }
            }
        }
        TCP::release $mlen
    }
    TCP::collect
}
}

No.     Time                       Delta Time  Source                Src port Destination           Dst port Protocol Window     BiF        Vlan id Length Info
      8 2012-07-04 23:01:31.157199 0.000000    192.168.206.55        53893    172.28.19.252         3868     DIAMETER 66560      20                 74     cmd=Device-WatchdogRequest(280) flags=R--- appl=Diameter Common Messages(0) h2h=ffd648f0 e2e=1ccb0074

Frame 8: 74 bytes on wire (592 bits), 74 bytes captured (592 bits)
Ethernet II, Src: Dell_7a:ae:2a (5c:26:0a:7a:ae:2a), Dst: Force10N_3f:7b:66 (00:01:e8:3f:7b:66)
Internet Protocol Version 4, Src: 192.168.206.55 (192.168.206.55), Dst: 172.28.19.252 (172.28.19.252)
Transmission Control Protocol, Src Port: 53893 (53893), Dst Port: 3868 (3868), Seq: 197, Ack: 177, Len: 20
Diameter Protocol
    Version: 0x01
    Length: 20
    Flags: 0x80
    Command Code: 280 Device-Watchdog
    ApplicationId: 0
    Hop-by-Hop Identifier: 0xffd648f0
    End-to-End Identifier: 0x1ccb0074
    [Answer In: 11]

No.     Time                       Delta Time  Source                Src port Destination           Dst port Protocol Window     BiF        Vlan id Length Info
     11 2012-07-04 23:01:31.255105 0.097906    172.28.19.252         3868     192.168.206.55        53893    DIAMETER 3996       64                 118    cmd=Device-WatchdogAnswer(280) flags=---- appl=Diameter Common Messages(0) h2h=ffd648f0 e2e=1ccb0074

Frame 11: 118 bytes on wire (944 bits), 118 bytes captured (944 bits)
Ethernet II, Src: Force10N_3f:7b:66 (00:01:e8:3f:7b:66), Dst: Dell_7a:ae:2a (5c:26:0a:7a:ae:2a)
Internet Protocol Version 4, Src: 172.28.19.252 (172.28.19.252), Dst: 192.168.206.55 (192.168.206.55)
Transmission Control Protocol, Src Port: 3868 (3868), Dst Port: 53893 (53893), Seq: 177, Ack: 237, Len: 64
Diameter Protocol
    Version: 0x01
    Length: 64
    Flags: 0x00
    Command Code: 280 Device-Watchdog
    ApplicationId: 0
    Hop-by-Hop Identifier: 0xffd648f0
    End-to-End Identifier: 0x1ccb0074
    [Request In: 8]
    [Response Time: 0.097906000 seconds]
    AVP: Result-Code(268) l=12 f=-M- val=DIAMETER_SUCCESS (2001)
    AVP: Origin-Host(264) l=14 f=-M- val=BIG-IP
    AVP: Origin-Realm(296) l=16 f=-M- val=test.com