<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hello,<br>
<br>
<div class="moz-cite-prefix">On 6/12/12 12:01 PM, SamyGo wrote:<br>
</div>
<blockquote
cite="mid:CAJUJwtiaOJo79q_mnJS-Zex5+fpMfuVdSYH-dVnyt-sWQ1s28A@mail.gmail.com"
type="cite">Thanks Sir,
<div>Doing a static or even a run-time mapping of same UID calls
to destination server is what I thought about this type of case
almost an year ago. </div>
<div><br>
</div>
<div>What I am thinking is : create a table for UID/Destination
Mapping; for a unique UID see if there is any destination in
that table. If it exists just jump to that server directly. If
no UID/destination entry is found for that UID then invoke
Dispatcher; select destination, make call to it, and store this
in UID/destination map table !!</div>
<div><br>
Let me know if there could be any improvement in this.</div>
</blockquote>
<br>
can be a solution, indeed. You may have a race if that user does
calls in parallel first time and different destinations are selected
-- not sure it is the case for you.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<blockquote
cite="mid:CAJUJwtiaOJo79q_mnJS-Zex5+fpMfuVdSYH-dVnyt-sWQ1s28A@mail.gmail.com"
type="cite">
<div><br>
</div>
<div>Thanks</div>
<div>Best Regards,</div>
<div>Sammy G.</div>
<div><br>
<div class="gmail_quote">On Tue, Jun 12, 2012 at 2:43 PM,
Daniel-Constantin Mierla <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:miconda@gmail.com"
target="_blank">miconda@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hello,<br>
<br>
if you are using integer UID, I would suggest you use
modulo operation to select the destination address -- this
will require config operations only.<br>
<br>
Another option you can map an UID to a dispatcher set id
(e.g., via mtree or htable) and then you can do the alg 8.<br>
<br>
Cheers,<br>
Daniel
<div>
<div class="h5"><br>
<br>
<div>On 6/7/12 1:37 PM, SamyGo wrote:<br>
</div>
<blockquote type="cite">Hi again,
<div>yes my scenario is quiet simple. I've lots of
users and groups of those users are defined by
UIDs, one UID means 70 users of one client whereas
other UID could've 3 users of another client. </div>
<div> So what I am trying to implement here is that
calls from one same UID are always routed to
exactly one same destination server. That'll help
in issues like call-parking, call-pickup,
conference calls etc.</div>
<div><br>
</div>
<div>I hope I've explained the scenario in simpler
terms here.</div>
<div><br>
</div>
<div>Regards,</div>
<div>Sammy Go.</div>
<div><br>
<br>
<div class="gmail_quote">On Thu, Jun 7, 2012 at
4:20 PM, Daniel-Constantin Mierla <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:miconda@gmail.com"
target="_blank">miconda@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hello,<br>
<br>
that hash function is intended for hashing
alpha-numeric usernames and has a fair
distribution for such cases.<br>
<br>
I don't think is good for hashing numbers,
at the end of a day, a number is already
like a hash code. You can use in the config
file modulo operation to select a particular
destination based on a number.<br>
<br>
Maybe if you explain what is your target to
implement, we can provide the right hints to
do it.<br>
<br>
Cheers,<br>
Daniel
<div>
<div><br>
<br>
<div>On 6/6/12 6:09 PM, SamyGo wrote:<br>
</div>
<blockquote type="cite">Sorry for late
reply: this wasn't very helpful. I
think Hashing algo code needs to get
bit smarter. If there is any
possibility can you please let me
know. !
<div> <br>
<br>
<div class="gmail_quote">On Mon, Jun
4, 2012 at 3:33 PM,
Daniel-Constantin Mierla <span
dir="ltr"><<a
moz-do-not-send="true"
href="mailto:miconda@gmail.com"
target="_blank">miconda@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">To make
the life easier to spot the hash
code in such case, I just
committed a small patch to print
it for alg 7:<br>
<br>
<a moz-do-not-send="true"
href="http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=83a558fbad700198a8667ef01f756269d7e2c310"
target="_blank">http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=83a558fbad700198a8667ef01f756269d7e2c310</a><br>
<br>
Should be easy to backport if
other version is used.<br>
<br>
Cheers,<br>
Daniel
<div>
<div><br>
<br>
On 6/4/12 12:23 PM, Carsten
Bock wrote:<br>
<blockquote
class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
It's hard to say, most
likely not. You find the
used hash-function here:<br>
<br>
841 unsigned int
ds_get_hash(str *x, str
*y)<br>
<a moz-do-not-send="true"
href="http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=blob;f=modules_k/dispatcher/dispatch.c;h=ae0c51b122d34e29b3474957a64b24ff492cfcd5;hb=HEAD"
target="_blank">http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=blob;f=modules_k/dispatcher/dispatch.c;h=ae0c51b122d34e29b3474957a64b24ff492cfcd5;hb=HEAD</a><br>
<br>
It was originally
implemented to distribute
usernames to servers,<br>
which worked fine.<br>
<br>
Carsten<br>
<br>
2012/6/4 SamyGo <<a
moz-do-not-send="true"
href="mailto:govoiper@gmail.com"
target="_blank">govoiper@gmail.com</a>>:<br>
<blockquote
class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px
#ccc
solid;padding-left:1ex">
Thanks Sir,<br>
<br>
Thats what I expected.
Do you think this will
change if I use only two<br>
values with huge
difference in each
other, lets say
{26000,29000} ?<br>
<br>
Regards,<br>
Sammy<br>
<br>
On Mon, Jun 4, 2012 at
3:05 PM, Carsten Bock
<<a
moz-do-not-send="true"
href="mailto:carsten@ng-voice.com" target="_blank">carsten@ng-voice.com</a>>
wrote:<br>
<blockquote
class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px
#ccc
solid;padding-left:1ex">
Hi,<br>
<br>
this functionality
uses a generic "hash"
function to generate
an<br>
Integer-Value of the
PVAR and then reduces
this to the number
hosts in<br>
your destination set.<br>
If you have only using
two different values
of the PVAR and only
two<br>
hosts in the
dispatcher list, it
can likely happen,
that the same host<br>
is choosen. You should
try a wider range of
values for your
PVAR...<br>
(e.g. try 1000
different values),
then you should see a
distribution.<br>
<br>
Carsten<br>
<br>
2012/6/4 SamyGo <<a
moz-do-not-send="true" href="mailto:govoiper@gmail.com" target="_blank">govoiper@gmail.com</a>>:<br>
<blockquote
class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px
#ccc
solid;padding-left:1ex">
Hi,<br>
<br>
No, nothing at all.
I haven't went too
deep into debug logs
but no<br>
internal<br>
error was appearing.
Everything was as
calm as ever and I
only get one<br>
destination uri.<br>
<br>
So maybe what I'm
getting from your
email is that , for
this to work the<br>
way<br>
I expect is to have
more unique and
random values in my
hash_pvar to get<br>
the<br>
required
functionality.<br>
<br>
Thanks once again,<br>
BR<br>
SG<br>
<br>
On Mon, Jun 4, 2012
at 11:52 AM,
Daniel-Constantin
Mierla<br>
<<a
moz-do-not-send="true"
href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>>
wrote:<br>
<blockquote
class="gmail_quote"
style="margin:0 0
0
.8ex;border-left:1px
#ccc
solid;padding-left:1ex">
Hello,<br>
<br>
do you get any
errors in the log?<br>
<br>
Be aware that hash
functions may
return same code
for different
input<br>
values. A hash
function is
guaranteed to
return same code
for same<br>
input<br>
value, but there
can be collisions
of codes for
different values.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<br>
On 6/3/12 3:41 PM,
SamyGo wrote:<br>
<br>
Hello,<br>
<br>
I'm having trouble
using algorithm 7
in dispatcher
module. Here is my<br>
kamailio version.
The problem is
that despite
multiple
dispatcher<br>
entries<br>
corresponding to
one set all calls
go only to only
one destination.<br>
<br>
<br>
[root@control1 ~]#
kamailio -V<br>
version: kamailio
3.2.3
(x86_64/linux)
59f87e<br>
flags: STATS: Off,
USE_IPV6, USE_TCP,
USE_TLS,
TLS_HOOKS,<br>
USE_RAW_SOCKS,<br>
DISABLE_NAGLE,
USE_MCAST,
DNS_IP_HACK,
SHM_MEM, SHM_MMAP,
PKG_MALLOC,<br>
DBG_QM_MALLOC,
USE_FUTEX,
FAST_LOCK-ADAPTIVE_WAIT,
USE_DNS_CACHE,<br>
USE_DNS_FAILOVER,
USE_NAPTR,
USE_DST_BLACKLIST,
HAVE_RESOLV_RES<br>
ADAPTIVE_WAIT_LOOPS=1024,
MAX_RECV_BUFFER_SIZE
262144, MAX_LISTEN
16,<br>
MAX_URI_SIZE 1024,
BUF_SIZE 65535,
DEFAULT PKG_SIZE
4MB<br>
poll method
support: poll,
epoll_lt,
epoll_et,
sigio_rt, select.<br>
id: 59f87e<br>
compiled on
18:04:08 Apr 19
2012 with gcc
4.1.2<br>
[root@control1 ~]#<br>
<br>
Here is the
dipacther module
params.<br>
<br>
<br>
<br>
# -------
Load-balancer
params ------<br>
modparam("dispatcher",
"db_url", DBURL)<br>
modparam("dispatcher",
"table_name",
"dispatcher")<br>
modparam("dispatcher",
"setid_col",
"setid")<br>
modparam("dispatcher",
"destination_col",
"destination")<br>
modparam("dispatcher",
"force_dst", 1)<br>
modparam("dispatcher",
"flags", 3)<br>
modparam("dispatcher",
"dst_avp",
"$avp(i:271)")<br>
modparam("dispatcher",
"cnt_avp",
"$avp(i:273)")<br>
modparam("dispatcher",
"ds_ping_from", <a
moz-do-not-send="true">"sip:proxy@109.XXX.2XX.XX"</a>)<br>
modparam("dispatcher",
"ds_ping_interval",15)<br>
modparam("dispatcher",
"ds_probing_mode",
1)<br>
modparam("dispatcher",
"ds_ping_reply_codes",<br>
"class=2;code=403;code=404;code=484;class=3")<br>
modparam("dispatcher",
"hash_pvar",
"$avp(i:274)")<br>
modparam("dispatcher",
"ds_hash_size", 9)<br>
modparam("dispatcher",
"ds_hash_initexpire",
60)<br>
<br>
<br>
<br>
Below is the
function call
based on
avp(i:274)<br>
<br>
<br>
<br>
avp_db_query("select
uid from
uid_did_map where
accountcode =<br>
'$fU'","$avp(i:274)");<br>
xlog("L_INFO","$rm
from $fu
(IP:$si:$sp)
---------<br>
UID:'$avp(i:274)-----------'\n");<br>
ds_load_update();<br>
if(!ds_select_dst("1","7"))
{<br>
sl_send_reply("500",
"No destination<br>
available");<br>
xlog("route[MAIN]
: $rm : No
destinations<br>
available for
$rd");<br>
exit;<br>
}<br>
<br>
<br>
I'm getting two
different values
for avp(i:274)
{26,29} but the<br>
destination are
not hashed on its
base.<br>
<br>
Please help.<br>
<br>
Regards,<br>
Sammy G.<br>
<br>
<br>
<br>
_______________________________________________<br>
SIP Express Router
(SER) and Kamailio
(OpenSER) -
sr-users mailing
list<br>
<a
moz-do-not-send="true"
href="mailto:sr-users@lists.sip-router.org" target="_blank">sr-users@lists.sip-router.org</a><br>
<a
moz-do-not-send="true"
href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><br>
<br>
<br>
--<br>
Daniel-Constantin
Mierla - <a
moz-do-not-send="true"
href="http://www.asipto.com" target="_blank">http://www.asipto.com</a><br>
<a
moz-do-not-send="true"
href="http://twitter.com/#%21/miconda" target="_blank">http://twitter.com/#!/miconda</a>
- <a
moz-do-not-send="true"
href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a><br>
Kamailio Advanced
Training, Seattle,
USA, Sep 23-26,
2012 -<br>
<a
moz-do-not-send="true"
href="http://asipto.com/u/katu" target="_blank">http://asipto.com/u/katu</a><br>
Kamailio Practical
Workshop,
Netherlands, Sep
10-12, 2012 -<br>
<a
moz-do-not-send="true"
href="http://asipto.com/u/kpw" target="_blank">http://asipto.com/u/kpw</a><br>
<br>
<br>
<br>
</blockquote>
<br>
_______________________________________________<br>
SIP Express Router
(SER) and Kamailio
(OpenSER) - sr-users
mailing list<br>
<a
moz-do-not-send="true"
href="mailto:sr-users@lists.sip-router.org" target="_blank">sr-users@lists.sip-router.org</a><br>
<a
moz-do-not-send="true"
href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><br>
<br>
</blockquote>
<br>
<br>
--<br>
Carsten Bock<br>
CEO (Geschäftsführer)<br>
<br>
ng-voice GmbH<br>
Schomburgstr. 80<br>
D-22767 Hamburg /
Germany<br>
<br>
<a
moz-do-not-send="true"
href="http://www.ng-voice.com" target="_blank">http://www.ng-voice.com</a><br>
mailto:<a
moz-do-not-send="true"
href="mailto:carsten@ng-voice.com" target="_blank">carsten@ng-voice.com</a><br>
<br>
Mobile <a
moz-do-not-send="true"
href="tel:%2B49%20179%202021244" value="+491792021244" target="_blank">+49
179 2021244</a><br>
Office <a
moz-do-not-send="true"
href="tel:%2B49%2040%2034927219" value="+494034927219" target="_blank">+49
40 34927219</a><br>
Fax <a
moz-do-not-send="true"
href="tel:%2B49%2040%2034927220" value="+494034927220" target="_blank">+49
40 34927220</a><br>
<br>
Sitz der Gesellschaft:
Hamburg<br>
Registergericht:
Amtsgericht Hamburg,
HRB 120189<br>
Geschäftsführer:
Carsten Bock<br>
Ust-ID: DE279344284<br>
<br>
Hier finden Sie unsere
handelsrechtlichen
Pflichtangaben:<br>
<a
moz-do-not-send="true"
href="http://www.ng-voice.com/imprint/" target="_blank">http://www.ng-voice.com/imprint/</a><br>
<br>
_______________________________________________<br>
SIP Express Router
(SER) and Kamailio
(OpenSER) - sr-users
mailing list<br>
<a
moz-do-not-send="true"
href="mailto:sr-users@lists.sip-router.org" target="_blank">sr-users@lists.sip-router.org</a><br>
<a
moz-do-not-send="true"
href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><br>
</blockquote>
<br>
<br>
_______________________________________________<br>
SIP Express Router (SER)
and Kamailio (OpenSER) -
sr-users mailing list<br>
<a
moz-do-not-send="true"
href="mailto:sr-users@lists.sip-router.org" target="_blank">sr-users@lists.sip-router.org</a><br>
<a
moz-do-not-send="true"
href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><br>
<br>
</blockquote>
<br>
<br>
</blockquote>
<br>
-- <br>
Daniel-Constantin Mierla - <a
moz-do-not-send="true"
href="http://www.asipto.com"
target="_blank">http://www.asipto.com</a><br>
<a moz-do-not-send="true"
href="http://twitter.com/#%21/miconda"
target="_blank">http://twitter.com/#!/miconda</a>
- <a moz-do-not-send="true"
href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a><br>
Kamailio Advanced Training,
Seattle, USA, Sep 23-26,
2012 - <a
moz-do-not-send="true"
href="http://asipto.com/u/katu"
target="_blank">http://asipto.com/u/katu</a><br>
Kamailio Practical Workshop,
Netherlands, Sep 10-12, 2012
- <a moz-do-not-send="true"
href="http://asipto.com/u/kpw" target="_blank">http://asipto.com/u/kpw</a><br>
<br>
<br>
<br>
<br>
_______________________________________________<br>
SIP Express Router (SER) and
Kamailio (OpenSER) -
sr-users mailing list<br>
<a moz-do-not-send="true"
href="mailto:sr-users@lists.sip-router.org"
target="_blank">sr-users@lists.sip-router.org</a><br>
<a moz-do-not-send="true"
href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
<pre cols="72">--
Daniel-Constantin Mierla - <a moz-do-not-send="true" href="http://www.asipto.com" target="_blank">http://www.asipto.com</a>
<a moz-do-not-send="true" href="http://twitter.com/#%21/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a moz-do-not-send="true" href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - <a moz-do-not-send="true" href="http://asipto.com/u/katu" target="_blank">http://asipto.com/u/katu</a>
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - <a moz-do-not-send="true" href="http://asipto.com/u/kpw" target="_blank">http://asipto.com/u/kpw</a></pre>
<br>
<br>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
<pre cols="72">--
Daniel-Constantin Mierla - <a moz-do-not-send="true" href="http://www.asipto.com" target="_blank">http://www.asipto.com</a>
<a moz-do-not-send="true" href="http://twitter.com/#%21/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a moz-do-not-send="true" href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - <a moz-do-not-send="true" href="http://asipto.com/u/katu" target="_blank">http://asipto.com/u/katu</a>
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - <a moz-do-not-send="true" href="http://asipto.com/u/kpw" target="_blank">http://asipto.com/u/kpw</a></pre>
<br>
<br>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - <a class="moz-txt-link-freetext" href="http://asipto.com/u/katu">http://asipto.com/u/katu</a>
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - <a class="moz-txt-link-freetext" href="http://asipto.com/u/kpw">http://asipto.com/u/kpw</a></pre>
<br>
<br>
</body>
</html>