[OpenSIPS-Users] dlg_validate_dialog errors on BYE and ACK in loose_route

Jeff Pyle jpyle at fidelityvoice.com
Mon Apr 11 16:15:11 CEST 2011

Indeed!  I hadn't noticed the difference in the dlg vs req sections of the debug message.

I shall try exactly as you suggest.  Thanks.

- Jeff

From: Vlad Paiu <vladpaiu at opensips.org<mailto:vladpaiu at opensips.org>>
Reply-To: OpenSIPS users mailling list <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Date: Mon, 11 Apr 2011 06:13:32 -0400
To: "users at lists.opensips.org<mailto:users at lists.opensips.org>" <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Subject: Re: [OpenSIPS-Users] dlg_validate_dialog errors on BYE and ACK in loose_route

Hello Jeff,

It's not that the dialog is already torn down by the time the BYE gets to that particular portion of script.
It's complaining about the fact that at the dialog creation, the route had the "lr=on" parameter, and at BYE time, the parameter has been stripped and set
just to "lr".

This should not happen in a regular scenario, as other SIP entities should not explicitly modify the content of Route headers recorded at Invite time.
You could try to check the  enable_full_lr ( [1] ) parameter, and onlyattach "lr" instead of "lr=on", and see if this fixes the behavior.

[1] http://www.opensips.org/html/docs/modules/devel/rr.html#id250149


Vlad Paiu
OpenSIPS Developer

On 04/09/2011 10:32 PM, Jeff Pyle wrote:

I'm trying a new chunklet of config in loose_route().  I believe this came from a documentation page somewhere, so I don't pretend to take credit for the concept.

                        # Clean up dialog data if necessary
                        if ($DLG_status!=NULL && !validate_dialog()) {
                                xlog("L_INFO", "Unable to validate dialog, fixing - $hdr(CSeq) on $ci\n");

I send the first batch of pseudo-production traffic through this config today and I ended up with a metric ton of:
  ERROR:dialog:dlg_validate_dialog: Check failed for routenumber 0. req=[sip:<opensips-IP?;lr;ftag=23ddd50-0-13c4-1f179b-78884527-1f179b;did=45b.b972314],dlg=[sip:<opensips-IP>;lr=on;ftag=23ddd50-0-13c4-1f179b-78884527-1f179b;did=45b.b972314]

And, the xlogs from the above line:
  Unable to validate dialog, fixing - 3 BYE on <callid>

It showed up on a number of BYEs and ACKs.  My dialog module config is as follows:

# ----- dialog params -----
modparam("dialog", "dlg_flag", 4)
modparam("dialog", "bye_on_timeout_flag", 4)
modparam("dialog", "default_timeout", 21600)
modparam("dialog|sst", "timeout_avp", "$avp(s:dialog_timeout)")
modparam("dialog", "dlg_extra_hdrs", "Hint: dialog expired\r\n")
modparam("dialog", "dlg_match_mode", 1)  # 0 = DID_ONLY; 1 = DID first, SIP second; 2 = SIP only
modparam("dialog", "db_url", "mysql://osuer:ospass@dbcluster/osdb")
modparam("dialog", "table_name", "dialog_1")
modparam("dialog", "db_mode", 1)  # 1 = Realtime to DB; 2 = delayed; 3 = on shutdown
modparam("dialog", "profiles_with_value", "711calls; 729calls; calls")

create_dialog() runs on all initial INVITEs.

Is this type of behavior anything close to normal?  What might cause it?  My immediate fix is to simply comment out this portion of the config, but I'm afraid I might be masking a larger issue.  Any suggestions would be great.

Just had a thought as I was about to send this email.  Perhaps this is because by the time the BYE gets to this portion of the script, the dialog is already torn down?  Could it be that simple, just add "if !(is_method("BYE") || is_method("ACK"))" to the top line of this config portion?

- Jeff

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