[SR-Users] Kamailio and MSILO with TLS AORs
Roberto Fichera
kernel at tekno-soft.it
Mon May 26 16:46:55 CEST 2014
On 05/26/2014 01:04 PM, Roberto Fichera wrote:
Ciao,
> [...]
>>>>
>>>> On 26/05/14 12:13, Roberto Fichera wrote:
>>>>> On 05/26/2014 12:03 PM, Daniel-Constantin Mierla wrote:
>>>>>> Hello,
>>>>>
>>>>> Ciao!
>>>>>
>>>>>>
>>>>>> good that you sent a reminder -- I checked while offline traveling, but then forgot to follow up.
>>>>>>
>>>>>> I expect that ps->req is null in this case, because there is no request received by kamailio. That results in
>>>>>> xlog not doing anything.
>>>>>>
>>>>>> In other words, I expect the event route being executed, just the action inside is doesn't do anything in this case.
>>>>>
>>>>> Does this mean that I'll have to set a "faked" ps->req in order to get the event route executed?
>>>>
>>>> that's the safe way. The event route is executed, but many functions that you can use inside config routing blocks
>>>> require a non-null sip message structure. It is the case of xlog() for example, which simply returns -1 if request
>>>> is null.
>>>
>>> Ok! Can you suggest the safest and reasonable way to setup the request for this case?
>>
>> Ah! No! Wait! The event route is executed within a tm callback via tmb.t_request() so I'd expect a valid ps->req,
>> don't you think so?
>
> I've found how to change the code ... just testing the logic. I'll get back to you in case.
After a while I've found that I can pass a request using the uac_r.cbp field, so I've fixed the callback
to use the passed fields instead a straight int (previously mid==message id) but I'm not sure how to
build a fake sip_msg request regarding the given msilo dumped msg, could you please give me a
tips how to do so?
Cheers,
Roberto Fichera.
>
> Cheer,
> Roberto Fichera.
>
>>
>>>
>>> Cheers,
>>> Roberto Fichera.
>>>
>>>>
>>>> Cheers, Daniel
>>>>
>>>>>
>>>>> Cheers,
>>>>> Roberto Fichera.
>>>>>
>>>>>>
>>>>>> Cheers,
>>>>>> Daniel
>>>>>>
>>>>>> On 26/05/14 11:40, Roberto Fichera wrote:
>>>>>>> On 05/22/2014 09:08 AM, Roberto Fichera wrote:
>>>>>>>> On 05/21/2014 11:15 PM, Daniel-Constantin Mierla wrote:
>>>>>>>>> Hello,
>>>>>>>
>>>>>>> Ciao Daniel,
>>>>>>>
>>>>>>> have you had time to look at the problem below?
>>>>>>>
>>>>>>> Cheers,
>>>>>>> Roberto Fichera.
>>>>>>>
>>>>>>>>
>>>>>>>> Ciao,
>>>>>>>>
>>>>>>>>> can you send the log messages printed with debug=3?
>>>>>>>>
>>>>>>>> Yes! Sure! Here it is:
>>>>>>>>
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8454]: DEBUG: <core> [receive.c:296]: receive_msg():
>>>>>>>> receive_msg: cleaning up
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:633]:
>>>>>>>> parse_msg(): SIP Reply (status):
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:635]:
>>>>>>>> parse_msg(): version: <SIP/2.0>
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:637]:
>>>>>>>> parse_msg(): status: <202>
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:639]:
>>>>>>>> parse_msg(): reason: <Accepted>
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/parse_via.c:1284]:
>>>>>>>> parse_via_param(): Found param type 232, <branch> = <z9hG4bK016e.a6c662d4000000000000000....0>; state=6
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/parse_via.c:1284]:
>>>>>>>> parse_via_param(): Found param type 235, <rport> = <1169>; state=6
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/parse_via.c:1284]:
>>>>>>>> parse_via_param(): Found param type 234, <received> = <xx.xx.xx.xx>; state=16
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/parse_via.c:2672]:
>>>>>>>> parse_via(): end of header reached, state=5
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:513]:
>>>>>>>> parse_headers(): parse_headers: Via found, flags=2
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:515]:
>>>>>>>> parse_headers(): parse_headers: this is the first via
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [receive.c:152]: receive_msg():
>>>>>>>> After parse_msg...
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_lookup.c:1072]: t_check_msg():
>>>>>>>> DEBUG: t_check_msg: msg id=1 global id=0 T start=0xffffffffffffffff
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/parse_addr_spec.c:176]:
>>>>>>>> parse_to_param(): DEBUG: add_param: tag=74b38630e6be28bab2ebe17319971f33-c57e
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/parse_addr_spec.c:893]:
>>>>>>>> parse_addr_spec(): end of header reached, state=29
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:190]:
>>>>>>>> get_hdr_field(): DEBUG: get_hdr_field: <To> [88]; uri=[sip:test1 at test.com]
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:192]:
>>>>>>>> get_hdr_field(): DEBUG: to body [<sip:test1 at test.com>]
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [parser/msg_parser.c:170]:
>>>>>>>> get_hdr_field(): get_hdr_field: cseq <CSeq>: <10> <MESSAGE>
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_lookup.c:949]: t_reply_matching():
>>>>>>>> DEBUG: t_reply_matching: hash 58896 label 0 branch 0
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_lookup.c:1004]: t_reply_matching():
>>>>>>>> DEBUG: t_reply_matching: reply matched (T=0x7f21ba974408)!
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_lookup.c:1141]: t_check_msg():
>>>>>>>> DEBUG: t_check_msg: msg id=1 global id=1 T end=0x7f21ba974408
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_reply.c:2206]: reply_received():
>>>>>>>> DEBUG: reply_received: org. status uas=0, uac[0]=0 local=2 is_invite=0)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_reply.c:1304]:
>>>>>>>> t_should_relay_response(): ->>>>>>>>> T_code=0, new_code=202
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_reply.c:2086]: local_reply():
>>>>>>>> DEBUG: local_reply: branch=0, save=0, winner=0
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_reply.c:2123]: local_reply():
>>>>>>>> DEBUG: local transaction completed
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_hooks.c:288]:
>>>>>>>> run_trans_callbacks_internal(): DBG: trans=0x7f21ba974408, callback type 1024, id 0 entered
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: msilo [msilo.c:1327]: m_tm_callback():
>>>>>>>> completed with status 202 [mid: 139782841221704/4]
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: msilo [msilo.c:1340]: m_tm_callback():
>>>>>>>> message <4> was sent successfully
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: msilo [ms_msg_list.c:236]:
>>>>>>>> msg_list_set_flag(): mid:4 fl:4
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: msilo [msilo.c:1350]: m_tm_callback():
>>>>>>>> executing event_route[msilo:on-delivered] (2)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: tm [t_reply.c:1663]:
>>>>>>>> cleanup_uac_timers(): DEBUG: cleanup_uac_timers: RETR/FR timers reset
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [usr_avp.c:644]:
>>>>>>>> destroy_avp_list(): DEBUG:destroy_avp_list: destroying list (nil)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [usr_avp.c:644]:
>>>>>>>> destroy_avp_list(): DEBUG:destroy_avp_list: destroying list (nil)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [usr_avp.c:644]:
>>>>>>>> destroy_avp_list(): DEBUG:destroy_avp_list: destroying list (nil)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [usr_avp.c:644]:
>>>>>>>> destroy_avp_list(): DEBUG:destroy_avp_list: destroying list (nil)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [usr_avp.c:644]:
>>>>>>>> destroy_avp_list(): DEBUG:destroy_avp_list: destroying list (nil)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [usr_avp.c:644]:
>>>>>>>> destroy_avp_list(): DEBUG:destroy_avp_list: destroying list (nil)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [xavp.c:448]: xavp_destroy_list():
>>>>>>>> destroying xavp list (nil)
>>>>>>>> May 22 08:58:04 dragon.tekno-soft.it /usr/sbin/kamailio[8436]: DEBUG: <core> [receive.c:296]: receive_msg():
>>>>>>>> receive_msg: cleaning up
>>>>>>>> May 22 08:58:08 dragon.tekno-soft.it /usr/sbin/kamailio[8441]: DEBUG: pike [timer.c:77]:
>>>>>>>> check_and_split_timer(): splitting 0x7f21ba98dab0(0x7f21ba7b15f8,0x7f21ba7b15f8)node=0x7f21ba98daa0
>>>>>>>> May 22 08:58:08 dragon.tekno-soft.it /usr/sbin/kamailio[8441]: DEBUG: pike [timer.c:102]:
>>>>>>>> check_and_split_timer(): succ. to split (h=0x7f21ba7b15f8)(p=0x7f21ba7b15f8,n=0x7f21ba7b15f8)
>>>>>>>> May 22 08:58:08 dragon.tekno-soft.it /usr/sbin/kamailio[8441]: DEBUG: pike [pike_funcs.c:234]: clean_routine():
>>>>>>>> clean node 0x7f21ba98daa0 (kids=(nil); hits=[0,0];leaf=[0,0])
>>>>>>>> May 22 08:58:08 dragon.tekno-soft.it /usr/sbin/kamailio[8441]: DEBUG: pike [pike_funcs.c:265]: clean_routine():
>>>>>>>> rmv node 0x7f21ba98daa0[192]
>>>>>>>> May 22 08:58:08 dragon.tekno-soft.it /usr/sbin/kamailio[8441]: DEBUG: pike [ip_tree.c:364]: remove_node():
>>>>>>>> destroying node 0x7f21ba98daa0
>>>>>>>> May 22 08:58:10 dragon.tekno-soft.it /usr/sbin/kamailio[8454]: DEBUG: <core> [io_wait.h:617]: io_watch_del():
>>>>>>>> DBG: io_watch_del (0x8eb2e0, 9, -1, 0x10) fd_no=2 called
>>>>>>>> May 22 08:58:10 dragon.tekno-soft.it /usr/sbin/kamailio[8454]: DEBUG: <core> [tcp_read.c:1437]:
>>>>>>>> release_tcpconn(): releasing con 0x7f21ba9420c0, state 1, fd=9, id=2
>>>>>>>> May 22 08:58:10 dragon.tekno-soft.it /usr/sbin/kamailio[8454]: DEBUG: <core> [tcp_read.c:1438]:
>>>>>>>> release_tcpconn(): extra_data 0x7f21ba941028
>>>>>>>> May 22 08:58:10 dragon.tekno-soft.it /usr/sbin/kamailio[8456]: DEBUG: <core> [tcp_main.c:3385]:
>>>>>>>> handle_tcp_child(): handle_tcp_child: reader response= 7f21ba9420c0, 1 from 2
>>>>>>>> May 22 08:58:10 dragon.tekno-soft.it /usr/sbin/kamailio[8456]: DEBUG: <core> [io_wait.h:390]: io_watch_add():
>>>>>>>> DBG: io_watch_add(0x893040, 28, 2, 0x7f21ba9420c0), fd_no=20
>>>>>>>> May 22 08:58:10 dragon.tekno-soft.it /usr/sbin/kamailio[8456]: DEBUG: <core> [tcp_main.c:3515]:
>>>>>>>> handle_tcp_child(): handle_tcp_child: CONN_RELEASE 0x7f21ba9420c0 refcnt= 1
>>>>>>>>
>>>>>>>> Cheers,
>>>>>>>> Roberto Fichera.
>>>>>>>>
>>>>>>>>>
>>>>>>>>> Cheers,
>>>>>>>>> Daniel
>>>>>>>>>
>>>>>>>>> On 21/05/14 18:37, Roberto Fichera wrote:
>>>>>>>>>> On 05/21/2014 09:08 AM, Roberto Fichera wrote:
>>>>>>>>>>
>>>>>>>>>> Hi There,
>>>>>>>>>>
>>>>>>>>>>> On 05/20/2014 09:15 PM, Peter Villeneuve wrote:
>>>>>>>>>>>> Hi Roberto,
>>>>>>>>>>>
>>>>>>>>>>> Hi Peter,
>>>>>>>>>>>
>>>>>>>>>>>> Did you ever figure out how to do it?
>>>>>>>>>>>> I'd be interested too.
>>>>>>>>>>>
>>>>>>>>>>> Not yet! I tried other ways, barely workarounds, but I guess I'll have to go into this
>>>>>>>>>>> quite soon because it is the straight way to go. The main problem is the lack of
>>>>>>>>>>> my knowledge of kamailio API so I'll have to study a bit some code in order to understand
>>>>>>>>>>> how to use it.
>>>>>>>>>>>
>>>>>>>>>>> BTW the idea is to trigger an event route were I'd like to set all the info regarding
>>>>>>>>>>> the dispatched message including the result of the delivering. I don't know if is possible
>>>>>>>>>>> but the best would be to set all the pseudo-variables so that such event route will be
>>>>>>>>>>> in the right context of the given MSILO message.
>>>>>>>>>>>
>>>>>>>>>>> So, any advice regarding the API would definitively help and put me in the right direction.
>>>>>>>>>>
>>>>>>>>>> Actually I've started to play with the above idea, so below you will find my current implementation
>>>>>>>>>> which seems executed because I see the LM_DBG() log but the code within the event route but
>>>>>>>>>> the corresponding script code does not.
>>>>>>>>>>
>>>>>>>>>> Any help?
>>>>>>>>>>
>>>>>>>>>> Cheers,
>>>>>>>>>> Roberto Fichera.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> event_route [msilo:on-delivered] {
>>>>>>>>>> xlog("L_INFO", "MSILO event on-delivered <$fu> to <$ru>\n");
>>>>>>>>>> }
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> diff --git a/modules/msilo/msilo.c b/modules/msilo/msilo.c
>>>>>>>>>> index 903b3cf..742c48d 100644
>>>>>>>>>> --- a/modules/msilo/msilo.c
>>>>>>>>>> +++ b/modules/msilo/msilo.c
>>>>>>>>>> @@ -281,6 +281,9 @@ static int bind_msilo(msilo_api_t* api)
>>>>>>>>>> return 0;
>>>>>>>>>> }
>>>>>>>>>>
>>>>>>>>>> +/* where to go for the local request route ("msilo:on-delivered") */
>>>>>>>>>> +int msilo_event_on_delivered=-1; /* default disabled */
>>>>>>>>>> +
>>>>>>>>>> /**
>>>>>>>>>> * init module function
>>>>>>>>>> */
>>>>>>>>>> @@ -480,6 +483,11 @@ static int mod_init(void)
>>>>>>>>>> if(ms_outbound_proxy.s!=NULL)
>>>>>>>>>> ms_outbound_proxy.len = strlen(ms_outbound_proxy.s);
>>>>>>>>>>
>>>>>>>>>> + /* check if the on-delivered route event exists or not */
>>>>>>>>>> + msilo_event_on_delivered=route_lookup(&event_rt, "msilo:on-delivered");
>>>>>>>>>> + if (msilo_event_on_delivered>=0 && event_rt.rlist[msilo_event_on_delivered]==0)
>>>>>>>>>> + msilo_event_on_delivered=-1; /* disable */
>>>>>>>>>> +
>>>>>>>>>> return 0;
>>>>>>>>>> }
>>>>>>>>>>
>>>>>>>>>> @@ -1330,6 +1338,26 @@ void m_tm_callback( struct cell *t, int type, struct tmcb_params *ps)
>>>>>>>>>> LM_DBG("message <%d> was sent successfully\n", *((int*)ps->param));
>>>>>>>>>> msg_list_set_flag(ml, *((int*)ps->param), MS_MSG_DONE);
>>>>>>>>>>
>>>>>>>>>> + /* execute the msilo:on-delivered event route */
>>>>>>>>>> + if(unlikely(msilo_event_on_delivered>=0))
>>>>>>>>>> + {
>>>>>>>>>> + int sflag_bk;
>>>>>>>>>> + int backup_route_type;
>>>>>>>>>> + struct run_act_ctx ctx;
>>>>>>>>>> +
>>>>>>>>>> + LM_DBG("executing event_route[msilo:on-delivered] (%d)\n", msilo_event_on_delivered);
>>>>>>>>>> +
>>>>>>>>>> + sflag_bk = getsflags();
>>>>>>>>>> + backup_route_type = get_route_type();
>>>>>>>>>> +
>>>>>>>>>> + set_route_type(EVENT_ROUTE);
>>>>>>>>>> + init_run_actions_ctx(&ctx);
>>>>>>>>>> + run_top_route(event_rt.rlist[msilo_event_on_delivered], ps->req, &ctx);
>>>>>>>>>> +
>>>>>>>>>> + set_route_type(backup_route_type);
>>>>>>>>>> + setsflagsval(sflag_bk);
>>>>>>>>>> + }
>>>>>>>>>> +
>>>>>>>>>> done:
>>>>>>>>>> return;
>>>>>>>>>> }
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Cheers,
>>>>>>>>>>> Roberto Fichera.
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Cheers,
>>>>>>>>>>>> Peter
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, Apr 17, 2014 at 4:04 PM, Roberto Fichera <kernel at tekno-soft.it <mailto:kernel at tekno-soft.it>> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> On 04/17/2014 10:36 AM, Roberto Fichera wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> Hi All,
>>>>>>>>>>>>
>>>>>>>>>>>> > On 04/16/2014 07:15 PM, Roberto Fichera wrote:
>>>>>>>>>>>> >
>>>>>>>>>>>> > Hi All,
>>>>>>>>>>>> >
>>>>>>>>>>>> >> On 04/16/2014 06:53 PM, Daniel-Constantin Mierla wrote:
>>>>>>>>>>>> >>> Hello,
>>>>>>>>>>>> >> Ciao Daniel,
>>>>>>>>>>>> >>
>>>>>>>>>>>> >>> most likely the messages are looped back, be sure you allow requests from 'myself' without
>>>>>>>>>>>> authentication.
>>>>>>>>>>>> >>>
>>>>>>>>>>>> >>> You can watch loopback interface with ngrep to see if the messages are sent out.
>>>>>>>>>>>> >> Yep! Allowing requests from myself solved the problem! Thanks!
>>>>>>>>>>>> >>
>>>>>>>>>>>> >> Another thing regarding MSILO, I would like to preserve some custom header fields
>>>>>>>>>>>> >> for both instant message and notification. How can I do it?
>>>>>>>>>>>> > I was able to solve this issue too, pretty straight I mean, there is the extra_hdrs_avp param
>>>>>>>>>>>> > which did the trick. BTW, is there a way to send back the notification to the sender that
>>>>>>>>>>>> > the message has been sent correctly via m_dump(), so to get a 200 about the given
>>>>>>>>>>>> > m_dump()ed message?
>>>>>>>>>>>> >
>>>>>>>>>>>>
>>>>>>>>>>>> I think that this can be solved in a different way, the idea is to add an event_route for the msilo
>>>>>>>>>>>> module so that we get notified for each m_dump()ed message about the given IM status and
>>>>>>>>>>>> then handle it in the cfg file. So, looking at the code within m_tm_callback() it seems that it's
>>>>>>>>>>>> right place where to add such feature. Since I'm not a kamailio developer but I've quite long
>>>>>>>>>>>> time experience in C coding, does anyone can show/point me to some example about
>>>>>>>>>>>> how to do that?
>>>>>>>>>>>>
>>>>>>>>>>>> Thanks in advance,
>>>>>>>>>>>> Roberto Fichera.
>>>>>>>>>>>>
>>
>>
>>
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