iRULE not working for ipfix log publisher.

Hello All,

 I have one iRULE created which is being used to publish ipfix to my vRNI Collector.

When I Check stastistics around iRULE I can see for RULE_INIT,CLIENT_ACCEPTED and SERVEr_CONNECTED Events there are data present and no failures are there.

But when I check for SERVER_CLOSED,CLIENT_CLOSED Events there are zero events present. Why is it happening. I am guessing because of this logs are not being published to my ipfix collector.

Can someone please let me know how to debug this. I have pasted my iRULE here->

when RULE_INIT {
    set static::http_rule1_dest ""
    set static::http_rule1_tmplt ""
}


# CLIENT_ACCEPTED event to initiate IPFIX destination and template
when CLIENT_ACCEPTED {
    set start [clock clicks -milliseconds]
    if { $static::http_rule1_dest == ""} {
        # open the logging destination if it has not been opened yet
        set static::http_rule1_dest [IPFIX::destination open -publisher /Common/Netflow_Collector_LogPublisher]
    }
    if { $static::http_rule1_tmplt == ""} {
        # if the template has not been created yet, create the template
        set static::http_rule1_tmplt [IPFIX::template create "flowStartMilliseconds \
            sourceIPv4Address \
            sourceIPv6Address \
            destinationIPv4Address \
            destinationIPv6Address \
            sourceTransportPort \
            destinationTransportPort \
            protocolIdentifier \
            octetTotalCount \
            packetTotalCount \
            octetDeltaCount \
            packetDeltaCount \
            postNATSourceIPv4Address \
            postNATSourceIPv6Address \
            postNATDestinationIPv4Address \
            postNATDestinationIPv6Address \
            postNAPTSourceTransportPort \
            postNAPTDestinationTransportPort \
            postOctetTotalCount \
            postPacketTotalCount \
            postOctetDeltaCount \
            postPacketDeltaCount \
            flowEndMilliseconds \ "]
    }
    set rule1_msg1 [IPFIX::msg create $static::http_rule1_tmplt]
}

# SERVER_CONNECTED event to initiate flow data to VMware Aria Operations for Networks and populate 5 tuples
when SERVER_CONNECTED {
    set client_closed_flag 0
    set server_closed_flag 0
    IPFIX::msg set $rule1_msg1 flowStartMilliseconds $start
    IPFIX::msg set $rule1_msg1 protocolIdentifier [IP::protocol]

    # Clientside
    if { [clientside {IP::version}] equals "4" } {
        # Client IPv4 address
        IPFIX::msg set $rule1_msg1 sourceIPv4Address [IP::client_addr]
        # BIG-IP IPv4 VIP address
        IPFIX::msg set $rule1_msg1 destinationIPv4Address [clientside {IP::local_addr}]
    } else {
        # Client IPv6 address
        IPFIX::msg set $rule1_msg1 sourceIPv6Address [IP::client_addr]
        # BIG-IP IPv6 VIP address
        IPFIX::msg set $rule1_msg1 destinationIPv6Address [clientside {IP::local_addr}]
    }
    # Client port
    IPFIX::msg set $rule1_msg1 sourceTransportPort [TCP::client_port]
    # BIG-IP VIP port
    IPFIX::msg set $rule1_msg1 destinationTransportPort [clientside {TCP::local_port}]

    # Serverside
    if { [serverside {IP::version}] equals "4" } {
        # BIG-IP IPv4 self IP address
        IPFIX::msg set $rule1_msg1 postNATSourceIPv4Address [IP::local_addr]
        # Server IPv4 IP address
        IPFIX::msg set $rule1_msg1 postNATDestinationIPv4Address [IP::server_addr]
    } else {
        # BIG-IP IPv6 self IP address
        IPFIX::msg set $rule1_msg1 postNATSourceIPv6Address [IP::local_addr]
        # Server IPv6 IP address
        IPFIX::msg set $rule1_msg1 postNATDestinationIPv6Address [IP::server_addr]
    }
    # BIG-IP self IP port
    IPFIX::msg set $rule1_msg1 postNAPTSourceTransportPort [TCP::local_port]
    # Server port
    IPFIX::msg set $rule1_msg1 postNAPTDestinationTransportPort [TCP::server_port]
}

# SERVER_CLOSED event to collect IP pkts and bytes count on serverside
when SERVER_CLOSED {
    set server_closed_flag 1
    # when flow is completed, BIG-IP to server REQUEST pkts and bytes count
    IPFIX::msg set $rule1_msg1 octetTotalCount [IP::stats bytes out]
    IPFIX::msg set $rule1_msg1 packetTotalCount [IP::stats pkts out]
    # when flow is completed, server to BIG-IP RESPONSE pkts and bytes count
    IPFIX::msg set $rule1_msg1 octetDeltaCount [IP::stats bytes in]
    IPFIX::msg set $rule1_msg1 packetDeltaCount [IP::stats pkts in]
    IPFIX::destination send $static::http_rule1_dest $rule1_msg1
}

# CLIENT_CLOSED event to collect IP pkts and bytes count on clientside
when CLIENT_CLOSED {
    set client_closed_flag 1
    # when flow is completed, client to BIG-IP REQUEST pkts and bytes octetDeltaCount
    IPFIX::msg set $rule1_msg1 postOctetTotalCount [IP::stats bytes in]
    IPFIX::msg set $rule1_msg1 postPacketTotalCount [IP::stats pkts in]
    # when flow is completed, BIG-IP to client RESPONSE pkts and bytes count
    IPFIX::msg set $rule1_msg1 postOctetDeltaCount [IP::stats bytes out]
    IPFIX::msg set $rule1_msg1 postPacketDeltaCount [IP::stats pkts out]
    # record the client closed time in ms
    IPFIX::msg set $rule1_msg1 flowEndMilliseconds [clock click -milliseconds]
    # send the IPFIX log
    IPFIX::destination send $static::http_rule1_dest $rule1_msg1
}