The session runs in it's own thread when you use session_locate to find a pointer to the session you stop that session from exiting until you release it from the same thread you called session_locate from.<br><br>So the session could have just done the radius connection itself in it's perfectly good existing thread.<br>
now you are detaining the session and creating a new thread thus wasting the session thread.<br><br>instead of an event handler you may want to use a state handler so you can run the stuff in the session thread.<br><br><br>
<br><div class="gmail_quote">On Mon, Feb 2, 2009 at 11:18 AM, <a href="mailto:regs@kinetix.gr">regs@kinetix.gr</a> <span dir="ltr"><<a href="mailto:regs@kinetix.gr">regs@kinetix.gr</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">
Correct me if I am wrong, but wouldn't a fifo queue (along with its
processing thread)<br>
process the radius packets to be sent in a sequential manner? And If a
packet submission<br>
got stuck for retries*timeout secs wouldn't that affect the packets
that wait in the queue?<br>
What I am trying to implement is different. I want the transmission of
the radius packets <br>
to be independent of any sequence or order... That's why I am creating
a new thread<br>
for each one, then detaching the thread, stalling the session with a
lock until I get all the<br>
info I want from it and in the end notifying the calling function that
it is free to continue (even to destroy the session).<br>
Also, does the event message contain all the possible info for a
session/channel/profile of a<br>
call leg?<br>
<br>
Anthony Minessale wrote:
<blockquote type="cite">when you call session = switch_core_session_locate(uuid);<br>
<br>
if session is not NULL you MUST switch_core_session_rwunlock(session)
before you exit your function.<br>
<br>
I have already pointed out 2 times now that you should not try to
session_locate the session, you should be using the data for the event
for this, and dup the event and hand the info to a backend thread over
a fifo queue?<br>
<br>
<div class="gmail_quote">On Mon, Feb 2, 2009 at 6:02 AM, Apostolos
Pantsiopoulos <span dir="ltr"><<a href="mailto:regs@kinetix.gr" target="_blank">regs@kinetix.gr</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">Anthony,<br>
<br>
I need your help in clarifying something.<br>
<br>
I my module load function I am using this to bind a handler to a
specific event (channel create) :<br>
<br>
if (switch_event_bind(modname, SWITCH_EVENT_CHANNEL_CREATE,
SWITCH_EVENT_SUBCLASS_ANY, my_on_create_handler, NULL) !=
SWITCH_STATUS_SUCCESS) {<br>
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
"Couldn't bind!\n");<br>
return SWITCH_STATUS_GENERR;<br>
}<br>
<br>
Then in my my_on_create_handler routine I have :<br>
<br>
static void my_on_create_handler(switch_event_t *event) {<br>
<br>
char* uuid = switch_event_get_header(event, "Unique-ID");<br>
<br>
switch_core_session_t *session;<br>
<br>
session = switch_core_session_locate(uuid);<br>
}<br>
<br>
this is only for test purposes. My handler does nothing else than
creating a pointer to the session that<br>
triggered the event. Everything compiles just fine. When I am running
freeswitch everything goes<br>
as expected (my handling routine is called and a session is indeed
returned on my local session variable) <br>
except from one thing : I can see doing a "ps -eLf" that the session
threads of my call get stuck and never get terminated.<br>
<br>
I can also tell that they are stuck by that error message in my console
:<br>
<br>
switch_core_session_hupall() Giving up with 42 sessions remaining<br>
<br>
which makes sense since I initiated 21 bridged calls.<br>
<br>
Is the reference (pointer) to the session the cause of all these? Does
FS considers that<br>
since there are still references to a session the session should not be
terminated? If yes,<br>
how can I destroy this reference (after I have used it)?
<div>
<div><br>
<br>
Anthony Minessale wrote:
<blockquote type="cite">No problem, I have the advantage That I
have implemented
this technique all over the place ;)<br>
Your event handler is the recipient end of that same algorithm.<br>
<br>
In fact the events are a very good thing to pass into queues.<br>
<br>
You could clone the event and insert the clone into the queue and when
you pop it from the <br>
backend thread you can just destroy it there then.<br>
<br>
<br>
<br>
<div class="gmail_quote">On Fri, Jan 30, 2009 at 8:27 AM,
Apostolos
Pantsiopoulos <span dir="ltr"><<a href="mailto:regs@kinetix.gr" target="_blank">regs@kinetix.gr</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">Wow. I didn't expect so
much detailing :)<br>
<br>
Thanks for the idea.<br>
<br>
My implementation is different though, but yours seems to be better.<br>
<br>
I will conclude what I started doing now and get back to you with the
results.<br>
<br>
If something is wrong against my implementation I will try doing it
your way.<br>
<br>
Thanks again!<br>
<br>
Anthony Minessale wrote:
<blockquote type="cite">
<div>
<div>use a queue object to send the data in a
dynamic struct to
the other thread.<br>
<br>
1) create a global queue.<br>
2) create a struct with all the info you need to send.<br>
<br>
on the event handler.<br>
<br>
1) malloc a new struct of that type.<br>
2) memset it to all 0.<br>
3) populate the struct.<br>
4) write the data into the queue.<br>
<br>
launch a thread at startup that does a blocking wait on the same queue<br>
<br>
1) pop the void pointer off the queue.<br>
2) cast it into your struct.<br>
3) extract the data from the struct and send it over radius.<br>
4) destroy the struct with free and loop.<br>
<br>
<br>
<div class="gmail_quote">On Fri, Jan 30, 2009 at 5:14 AM,
Apostolos
Pantsiopoulos <span dir="ltr"><<a href="mailto:regs@kinetix.gr" target="_blank">regs@kinetix.gr</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>
<br>
I am tweaking the mod_radius_cdr module to archive the behavior<br>
that most NASes have (i.e. accounting packets are sent in a separate<br>
thread so that the submission does not interfere with the execution of<br>
the call). While doing that, however, I bumped into another behavior of<br>
the module that I think is not desirable (at least by me) :<br>
<br>
While on a bridge, the module sends one acct start packet at the<br>
beginning of the originating<br>
leg (on_routing event handler) and two acct stop packets at the end of<br>
each leg<br>
(inbound and outbound). My opinion is that it should send one accounting<br>
start<br>
packet at the beginning of each call leg (inbound, outbound) resulting<br>
to a total<br>
number of two acct start packets. It is generally accepted that acct<br>
start/stop packets<br>
come in pairs so that billing applications can handle them accordingly.<br>
<br>
Some NAS's radius radius implementations have some other<br>
configuration modes<br>
like the Cisco's RADIUS Packet Suppression. When in this mode the Cisco
NAS<br>
sends only an accounting start/stop pair at the end of a final dialpeer<br>
attempt (and suppresses<br>
all the previous failed dialpeer attempts) thus resulting to less<br>
network traffic. Other<br>
NASes (such as MERA MVTS) can send a start/stop pair for each leg OR a<br>
start/stop<br>
pair for each end to end call, depending on the configuration. Opensips<br>
follows<br>
the star/stop pair by call leg paradigm. No matter what the<br>
implementation, all of them<br>
always send a acct start/stop pair. This is a common thing. And all the<br>
billing platforms<br>
can deal only with paired start/stops.<br>
<br>
The current module behavior (one start two stops) can complicate<br>
things since the<br>
radius server would not know how to match the second stop packet with<br>
its equivalent start.<br>
<br>
Before I get the infamous answer "pathes welcomed" I would like to<br>
state that I am<br>
already involved in changing this behavior (through a patch). So my real<br>
question is this :<br>
<br>
I noticed that the module uses the switch_core_add_state_handler<br>
function to register<br>
its handler table :<br>
<br>
switch_core_add_state_handler(&state_handlers);<br>
<br>
So the on_routing ( or the on_execute) event happens only when the<br>
inbound call is started.<br>
When the outbound call is initiated no handler is available to hook up a<br>
function and<br>
send the proper acct start packet.<br>
<br>
Should the module register its handlers using the<br>
switch_channel_add_state_handler() function instead?<br>
And if yes, how could the module pass the channel as a parameter to the<br>
function since channels<br>
are created and destroyed dynamically (and the module when initialized<br>
does not have that info).<br>
<br>
I would greatly appreciate your help in pinpointing a proper way to<br>
call my event handling<br>
routines on a per call leg basis.<br>
<br>
<br>
--<br>
-------------------------------------------<br>
Apostolos Pantsiopoulos<br>
Kinetix Tele.com R & D<br>
email: <a href="mailto:regs@kinetix.gr" target="_blank">regs@kinetix.gr</a><br>
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<br>
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-------------------------------------------
Apostolos Pantsiopoulos
Kinetix Tele.com R & D
email: <a href="mailto:regs@kinetix.gr" target="_blank">regs@kinetix.gr</a>
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Kinetix Tele.com R & D
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