Re: [SR-Users] Issue with Dispatcher Failover algorithm

I looked at the code and all seems ok there -- the first destination is selected to be used first.

Can you print $(avp(AVP_DST)[*]) after ds_select_dst(...)? Like:

xlog("selected destinations: $(avp(AVP_DST)[*])\n");

Send the log message after doing three test calls.

Cheers, Daniel

On 30.05.17 13:18, Cristi Constantin wrote:

That's great. Thanks a lot.

Best regards, Cristian

On 5/30/17, Daniel-Constantin Mierla miconda@gmail.com wrote:

...

Hello,

I was traveling during the past two weeks and didn't have the time to look properly at it. Hopefully today or tomorrow I will get to it.

Cheers, Daniel

On 29.05.17 23:14, Cristi Constantin wrote:

...

Hi Daniel,

Did you got the chance to look at the trace attached? I still not managed to figure out why failover is not working in my Kamailio configuration..

Thank you, Cristian

On Thu, May 25, 2017 at 5:17 PM, Cristi Constantin <cristi.constantin@gmail.com mailto:cristi.constantin@gmail.com> wrote:

Hi Daniel,

I attached a pcap trace. It contains several SIP messages, but
please check the INVITEs from 10.224.74.36 (Kamailio) to
10.126.54.51/10.126.55.51 <http://10.126.54.51/10.126.55.51>.

Thanks for you support,
Cristian

On Thu, May 25, 2017 at 5:04 PM, Daniel-Constantin Mierla
<miconda@gmail.com <mailto:miconda@gmail.com>> wrote:

    Hello,

    can you sent pcap or ngrep output with all sip messages of
    such case exposing the issue you have?

    Cheers,
    Daniel

    On Thu, May 25, 2017 at 2:18 PM, Cristi Constantin
    <cristi.constantin@gmail.com
    <mailto:cristi.constantin@gmail.com>> wrote:

        Hello,

        I have an issue with the behavior of ds_select_dst()
        method in case of using algorithm 8 (dispatch based on
        priority). In case both destinations are available, they
        are used alternatively, instead of always using the one
        with the highest priority.

        By searching through the mailing list I found that the
        lower the priority number, the higher the priority (1 is
        first, 2 is second, etc.).
        Based on this, I set the following in dispatcher.list:
        7 sip:10.126.54.51:5060
        <http://10.126.54.51:5060>;transport=sctp 9 1
        7 sip:10.126.55.51:5060
        <http://10.126.55.51:5060>;transport=sctp 9 2

        After running "kamcmd dispatcher.reload" and "kamcmd
        dispatcher.list", I have the confirmation that the
        priorities are correctly set:
                        SET: {
                                ID: 7
                                TARGETS: {
                                        DEST: {
                                                URI:
        sip:10.126.55.51:5060
        <http://10.126.55.51:5060>;transport=sctp
                                                FLAGS: AP
                                                PRIORITY: 2
                                        }
                                        DEST: {
                                                URI:
        sip:10.126.54.51:5060
        <http://10.126.54.51:5060>;transport=sctp
                                                FLAGS: AP
                                                PRIORITY: 1
                                        }
                                }
                        }

        The dispatcher settings from kamailio.cfg is the following:
        modparam("dispatcher", "list_file",
        "/etc/kamailio/dispatcher.list")
        modparam("dispatcher", "flags", 2)
        modparam("dispatcher", "ds_ping_interval", 10)
        modparam("dispatcher", "ds_ping_method", "OPTIONS")
        modparam("dispatcher", "ds_ping_from",
        "sip:kamailio@sdp-t-lb2")
        modparam("dispatcher", "ds_probing_mode", 3)
        modparam("dispatcher", "dst_avp", "$avp(AVP_DST)")
        modparam("dispatcher", "grp_avp", "$avp(AVP_GRP)")
        modparam("dispatcher", "cnt_avp", "$avp(AVP_CNT)")
        modparam("dispatcher", "sock_avp", "$avp(AVP_SOCK)")

        And the code which should do the displatch is the following:

              if (ds_is_from_list(7, 3, "$ru")) {
                  remove_hf("Route");
                  if(!ds_select_dst("7", "8")) {
                    send_reply("404", "No destination");
                    exit;
                  }
              }

        With the settings above, I was expecting to always have
        the messages delivered to 10.126.54.51. Instead, they are
        dispathed to 10.126.54.51 and 10.126.55.51 alternatively.

        Thanks a lot,
        Cristian


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    <http://twitter.com/#%21/miconda> -
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