Hello,
what about just hashing over a stable part, e.g. the from URI? Then the
dispatcher would distribute the second INVITE with authorization information to
the same asterisk again.
Cheers,
Henning
-----Original Message-----
From: Jawaid Bazyar <baz...@gmail.com>
Sent: Dienstag, 14. März 2023 03:20
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: [SR-Users] Re: Dispatcher behavior
That seems like it ought to have worked, but no..
Same issue,
Pic of trace attached.
The below config is largely cribbed from the default kamailio.cfg, and from the
Dispatcher documentation example config..
In request_route
route(DISPATCH);
route[DISPATCH] {
if (!ds_select_dst(1, 4)) { #Get a destination from dispatcher
send_reply("404","No destination DS");
exit;
}
xlog("--- DISPATCH: going to <$ru> via <$du> (attrs:
$xavp(_dsdst_=>attrs))\n");
t_on_failure("DISPATCH_FAILURE");
route(RELAY); #Route it
exit;
}
failure_route[DISPATCH_FAILURE] {
if (t_is_canceled()) {
exit;
}
# if an auth request, don't go to next entry in ds list..
if (t_check_status("(401)|(407)")) {
xlog("401 or 407 status reply from dispatch");
exit;
}
# next DST - only for 500 or local timeout
if (t_check_status("500")
or (t_branch_timeout() and !t_branch_replied())) {
# on a timeout failure, 500, etc mark this dest as IP (as
bad).
ds_mark_dst("ip");
if(ds_next_dst()) {
xlog("--- DISPATCH_FAILURE: retrying to <$ru> via <$du>
(attrs: $xavp(_dsdst_=>attrs))\n");
t_on_failure("DISPATCH_FAILURE");
route(RELAY);
exit;
}
}
}
On 3/13/23, 7:49 PM, "Alex Balashov" <abalas...@evaristesys.com
<mailto:abalas...@evaristesys.com>> wrote:
To your failure_route used for dispatcher rollover, add:
if(t_check_status(“407|401”))
exit;
This will allow the 401/407 challenge to be fed back to the original caller.
— Alex
> On Mar 13, 2023, at 8:27 PM, Jawaid Bazyar <baz...@gmail.com
> <mailto:baz...@gmail.com>> wrote:
>
> Hi Alex,
>
> I did try round-robin, but it has a different issue, which is that calls from
> a handset through the Kamailio to say asterisk1, trigger authentication
> challenge, then when the auth comes back from the client, Kam decides that's
> a failure, goes into the failover logic, and it round robins the client's
> auth to the -other- asterisk asterisk2, which then rejects the auth attempt
> as having a stale nonce (which is right, since it came from the other
> asterisk).
>
> I haven't yet figured out how to keep affinity for the same asterisk except
> by routing based on CallID.
>
> I guess the other option would be to tell Dispatcher that 401 Auth is not a
> 'failure'. If I can figure that out, then I can try with round robin.
>
> Jawaid
>
> --
>
>
> On 3/13/23, 6:09 PM, "Alex Balashov" <abalas...@evaristesys.com
> <mailto:abalas...@evaristesys.com> <mailto:abalas...@evaristesys.com
> <mailto:abalas...@evaristesys.com>>> wrote:
>
>
> I wonder if the distribution algorithm you have chosen behaves differently in
> this regard. Have you tried plain round-robin (i.e. #4)?
>
>
>> On Mar 13, 2023, at 6:59 PM, Jawaid Bazyar <baz...@gmail.com
>> <mailto:baz...@gmail.com> <mailto:baz...@gmail.com
>> <mailto:baz...@gmail.com>>> wrote:
>>
>> Hi,
>>
>> Maybe it would be easier to explain my expectations on how it's supposed to
>> work, and then you can tell me where I'm making a wrong assumption __
>>
>> So, load balancers like haproxy etc perform "health checks" on the service
>> being balanced. In this case, I have it setup for Kamailio to send OPTIONS
>> and I do in fact see those packets and 200 OK responses. And if haproxy sees
>> a host is down, it immediately stops trying to send client requests to that
>> host.
>>
>> In this case, after 10 successful OPTIONS pings, Kamailio marks the
>> destination as AP and everything is fine, Kamailio correctly returns the
>> destination in ds_select_dst.
>>
>> I have the settings below, so that if the service misses 5 OPTIONS checks,
>> Kamailio should mark that destination as "inactive".
>> But, it should keep probing it, so Kamailio can detect when the destination
>> comes back up. So as I understand it, that's the status "IP".
>>
>> And, Kamailio should stop including that destination in the responses from
>> ds_select_dst().
>>
>> And all of that is behaving as expected, EXCEPT that last bit -
>> ds_select_dst continues to include the IP (inactive) destination in
>> responses.
>>
>> I added
>>
>> ds_mark_dst("ip");
>>
>> in the event of a 500 or branch failure response, but I don't understand why
>> this is needed, because the destination is already in "IP" mode.
>>
>> So seemingly Kamailio knows the destination is inactive, but ds_select_dst
>> isn't acting on it unless I manually mark the target also.
>>
>> Perhaps I am overlooking an option?
>>
>> Regards,
>>
>> Jawaid
>>
>>
>> On 3/13/23, 9:51 AM, "Henning Westerholt" <h...@gilawa.com
>> <mailto:h...@gilawa.com> <mailto:h...@gilawa.com <mailto:h...@gilawa.com>>
>> <mailto:h...@gilawa.com <mailto:h...@gilawa.com> <mailto:h...@gilawa.com
>> <mailto:h...@gilawa.com>>>> wrote:
>>
>>
>> Hello,
>>
>>
>> probing means in this context sending OPTIONS pings, yes.
>>
>>
>> In mode 1 you can disable the probing by setting flag 4 to the destination
>> in the dispatcher file, according to the docs.
>>
>>
>> Cheers,
>>
>>
>> Henning
>>
>>
>> -----Original Message-----
>> From: Henning Westerholt <h...@gilawa.com <mailto:h...@gilawa.com>
>> <mailto:h...@gilawa.com <mailto:h...@gilawa.com>> <mailto:h...@gilawa.com
>> <mailto:h...@gilawa.com> <mailto:h...@gilawa.com <mailto:h...@gilawa.com>>>>
>> Sent: Montag, 13. März 2023 15:55
>> To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org>>>>
>> Subject: [SR-Users] Re: Dispatcher behavior
>>
>>
>> Hello,
>>
>>
>> not sure what the "auto-probing" mode is, but you can configure the
>> dispatcher OPTIONS ping behaviour with that parameter:
>>
>>
>> https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode
>>
>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>
>>
>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>
>>
>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>>
>>
>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>
>>
>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>>
>>
>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>>
>>
>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode&gt;>>
>>
>>
>> Cheers,
>>
>>
>> Henning
>>
>>
>> -----Original Message-----
>> From: Jawaid Bazyar <baz...@gmail.com <mailto:baz...@gmail.com>
>> <mailto:baz...@gmail.com <mailto:baz...@gmail.com>> <mailto:baz...@gmail.com
>> <mailto:baz...@gmail.com> <mailto:baz...@gmail.com
>> <mailto:baz...@gmail.com>>>>
>> Sent: Montag, 13. März 2023 14:33
>> To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org
>> <mailto:sr-users@lists.kamailio.org>>>>
>> Subject: [SR-Users] Re: Dispatcher behavior
>>
>>
>> Hi Alex,
>>
>>
>> I don't see "auto-probing" in the documentation.. here is my dispatcher
>> config that I snatched from somewhere on the Internet.
>>
>>
>> modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL
>> variable for database parameters
>> modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover
>> support is enabled.
>> modparam("dispatcher", "table_name", "dispatcher")
>> modparam("dispatcher", "ds_ping_interval", 5) #How often to ping
>> destinations to check status
>> modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping
>> modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in
>> a row do we need before we consider it down
>> modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful
>> pings in a row do we need before considering it up
>> modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency
>> modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when
>> state is known (to detect change in state)
>>
>>
>>
>>
>>
>>
>> On 3/12/23, 8:28 PM, "Alex Balashov" <abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com> <mailto:abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com>> <mailto:abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com> <mailto:abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com>>> <mailto:abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com> <mailto:abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com>> <mailto:abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com> <mailto:abalas...@evaristesys.com
>> <mailto:abalas...@evaristesys.com>>>>> wrote:
>>
>>
>>
>>
>> Unless you have auto-probing enabled, yes.
>>
>>
>>
>>
>>> On Mar 12, 2023, at 9:14 PM, Jawaid Bazyar <baz...@gmail.com
>>> <mailto:baz...@gmail.com> <mailto:baz...@gmail.com
>>> <mailto:baz...@gmail.com>> <mailto:baz...@gmail.com
>>> <mailto:baz...@gmail.com> <mailto:baz...@gmail.com
>>> <mailto:baz...@gmail.com>>> <mailto:baz...@gmail.com
>>> <mailto:baz...@gmail.com> <mailto:baz...@gmail.com
>>> <mailto:baz...@gmail.com>> <mailto:baz...@gmail.com
>>> <mailto:baz...@gmail.com> <mailto:baz...@gmail.com
>>> <mailto:baz...@gmail.com>>>>> wrote:
>>>
>>> Hi, is this expected behavior?
>>> I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and
>>> 10.20.20.252 (prio 10).
>>> When I have 10.20.20.252 turned off, dispatcher still tries to send packets
>>> to that host, even when the status flags are IP.
>>> root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list {
>>> NRSETS: 1
>>> RECORDS: {
>>> SET: {
>>> ID: 1
>>> TARGETS: {
>>> DEST: {
>>> URI: sip:10.20.20.252:5060
>>> FLAGS: IP
>>> PRIORITY: 10
>>> LATENCY: {
>>> AVG: 0.000000
>>> STD: 0.000000
>>> EST: 0.000000
>>> MAX: 0
>>> TIMEOUT: 62
>>> }
>>> }
>>> DEST: {
>>> URI: sip:10.20.20.118:5060
>>> FLAGS: AP
>>> PRIORITY: 5
>>> LATENCY: {
>>> AVG: 3.876000
>>> STD: 2.965000
>>> EST: 5.058000
>>> MAX: 14
>>> TIMEOUT: 0
>>> }
>>> }
>>> }
>>> }
>>> }
>>> }
>>> __________________________________________________________
>>> Kamailio - Users Mailing List - Non Commercial Discussions To
>>> unsubscribe send an email to sr-users-le...@lists.kamailio.org
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>>> <mailto:sr-users-le...@lists.kamailio.org>>
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>>> <mailto:sr-users-le...@lists.kamailio.org>
>>> <mailto:sr-users-le...@lists.kamailio.org
>>> <mailto:sr-users-le...@lists.kamailio.org>>>
>>> <mailto:sr-users-le...@lists.kamailio.org
>>> <mailto:sr-users-le...@lists.kamailio.org>
>>> <mailto:sr-users-le...@lists.kamailio.org
>>> <mailto:sr-users-le...@lists.kamailio.org>>
>>> <mailto:sr-users-le...@lists.kamailio.org
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>>> <mailto:sr-users-le...@lists.kamailio.org
>>> <mailto:sr-users-le...@lists.kamailio.org>>>>
>>> Important: keep the mailing list in the recipients, do not reply only to
>>> the sender!
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>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> Alex Balashov
>> Principal Consultant
>> Evariste Systems LLC
>> Web: https://evaristesys.com <https://evaristesys.com>
>> <https://evaristesys.com> <https://evaristesys.com>>
>> <https://evaristesys.com> <https://evaristesys.com>>
>> <https://evaristesys.com>> <https://evaristesys.com&gt;>>
>> <https://evaristesys.com> <https://evaristesys.com>>
>> <https://evaristesys.com>> <https://evaristesys.com&gt;>>
>> <https://evaristesys.com>> <https://evaristesys.com&gt;>>
>> <https://evaristesys.com&gt;>>
>> <https://evaristesys.com&amp;gt;&gt;>>
>> Tel: +1-706-510-6800
>>
>>
>>
>>
>> __________________________________________________________
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>> send an email to sr-users-le...@lists.kamailio.org
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>> <mailto:sr-users-le...@lists.kamailio.org
>> <mailto:sr-users-le...@lists.kamailio.org>
>> <mailto:sr-users-le...@lists.kamailio.org
>> <mailto:sr-users-le...@lists.kamailio.org>>>
>> <mailto:sr-users-le...@lists.kamailio.org
>> <mailto:sr-users-le...@lists.kamailio.org>
>> <mailto:sr-users-le...@lists.kamailio.org
>> <mailto:sr-users-le...@lists.kamailio.org>>
>> <mailto:sr-users-le...@lists.kamailio.org
>> <mailto:sr-users-le...@lists.kamailio.org>
>> <mailto:sr-users-le...@lists.kamailio.org
>> <mailto:sr-users-le...@lists.kamailio.org>>>>
>> Important: keep the mailing list in the recipients, do not reply only to the
>> sender!
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>>
>>
>>
>>
>>
>>
>>
>>
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>> Important: keep the mailing list in the recipients, do not reply only to the
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>> Important: keep the mailing list in the recipients, do not reply only to the
>> sender!
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>> Important: keep the mailing list in the recipients, do not reply only to the
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>> Edit mailing list options or unsubscribe:
>
>
> --
> Alex Balashov
> Principal Consultant
> Evariste Systems LLC
> Web: https://evaristesys.com <https://evaristesys.com>
> <https://evaristesys.com> <https://evaristesys.com>>
> Tel: +1-706-510-6800
>
>
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions
> To unsubscribe send an email to sr-users-le...@lists.kamailio.org
> <mailto:sr-users-le...@lists.kamailio.org>
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> Important: keep the mailing list in the recipients, do not reply only to the
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> Important: keep the mailing list in the recipients, do not reply only to the
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Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com <https://evaristesys.com>
Tel: +1-706-510-6800
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