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Thread: RE: Could a UA issue a new NOTIFY before the previous NOTIFYtransaction has completed?
RE: Could a UA issue a new NOTIFY before the previous NOTIFYtransaction has completed?
country flaguser name
United States		 2007-06-21 10:37:52 

  


  

    





However, if you are using UDP and if the
data in the second NOTIFY is additive to and not replacing the prior NOTIFY,
you may run into the issue of out-of-sequence delivery.



 



 
















From: Robert Sparks
[mailto:rjsparksnostrum.com] 

Sent: Wednesday, June 20, 2007
12:18 PM

To: yan

Cc: sipietf.org


Subject: Re: [Sip] Could a UA
issue a new NOTIFY before the previous NOTIFYtransaction has completed?







 



Generally speaking, yes.







 









An individual event package may restrict that behavior though.









 









RjS










 









On Jun 15, 2007, at 12:16 PM, yan wrote:

















hi:










  Could anyone answer me the question: 









Can a UA issue a new NOTIFY before the previous NOTIFY transaction has
completed?










 thx









 









yan






 













150 万 人 同 时 在 玩 的 网 游，你 不 试 试 吗 ？ 






_______________________________________________











This list is for NEW development of the core SIP Protocol










Use  sip-implementorscs.columbia.edu">sip-implementorscs.columbia.edu
for questions on current sip










Use  sippingietf.org">sippingietf.org for new
developments on the application of sip










 









  

  
  
   
     
    

  

    Re:  Could a UA issue a new NOTIFY
before the previous	NOTIFYtransaction
has completed?
  


  

     country flaguser name
United States		
     2007-06-21 18:48:49
  


  

    

Arunachalam Venkatraman (arunvenk) wrote:
> However, if you are using UDP and if the data in the
second NOTIFY is 
> additive to and not replacing the prior NOTIFY, you may
run into the 
> issue of out-of-sequence delivery.

This can be a problem even when using TCP if there are
proxies in the
path. There is no requirement for proxies to deliver
messages in the
order they receive them.

	Paul

>
------------------------------------------------------------
------------
> 
> *From Robert
Sparks [mailto:rjsparksnostrum.com]
> *Sent Wednesday,
June 20, 2007 12:18 PM
> *To yan
> *Cc sipietf.org
> *Subject Re: [Sip]
Could a UA issue a new NOTIFY before the previous 
> NOTIFYtransaction has completed?
> 
>  
> 
> Generally speaking, yes.
> 
>  
> 
> An individual event package may restrict that behavior
though.
> 
>  
> 
> RjS
> 
>  
> 
> On Jun 15, 2007, at 12:16 PM, yan wrote:
> 
> 
> 
> hi:
> 
>   Could anyone answer me the question:
> 
> Can a UA issue a new NOTIFY before the previous NOTIFY
transaction has 
> completed?
> 
>  thx
> 
>  
> 
> yan
> 
>  
> 
>
------------------------------------------------------------
------------
> 
> 150 万 人 同 时 在 玩 的 网 游，你 不 试 试 吗 ？ 
> <http://event.mail.163.com/chanel/xyq.htm?from=163_NO1&g
t;
> 
> _______________________________________________
> 
> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
> 
> This list is for NEW development of the core SIP
Protocol
> 
> Use sip-implementorscs.columbia.edu 
> <mailto:sip-implementorscs.columbia.edu> for
questions on current sip
> 
> Use sippingietf.org <mailto:sippingietf.org> for new developments on 
> the application of sip
> 
>  
> 
> 
>
------------------------------------------------------------
------------
> 
> _______________________________________________
> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
> This list is for NEW development of the core SIP
Protocol
> Use sip-implementorscs.columbia.edu for
questions on current sip
> Use sippingietf.org for new developments on the
application of sip


_______________________________________________
Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use sip-implementorscs.columbia.edu for questions on current
sip
Use sippingietf.org for new developments on the application of
sip



  


  

    
  

  
  
   
     
    

  

    Re:  Could a UA issue a new NOTIFY
before the previousNOTIFYtransaction has
completed?
  


  

     user name

     2007-06-21 20:04:31
  


  

    
Hi Paul:
       Is This issue belong to the internal implementation
of SIP production? Beacuse I think there are many similar
issues in the development of SIP production.

Thanks and Regards
Burce Qi


----- Original Message ----- 
From: "Paul Kyzivat" <pkyzivatcisco.com>
To: "Arunachalam Venkatraman (arunvenk)"
<arunvenkcisco.com>
Cc: <sipietf.org>; "yan" <comet_yan163.com>
Sent: Friday, June 22, 2007 7:48 AM
Subject: Re: [Sip] Could a UA issue a new NOTIFY before the
previous NOTIFY transaction has completed?


> 
> 
> Arunachalam Venkatraman (arunvenk) wrote:
>> However, if you are using UDP and if the data in
the second NOTIFY is 
>> additive to and not replacing the prior NOTIFY, you
may run into the 
>> issue of out-of-sequence delivery.
> 
> This can be a problem even when using TCP if there are
proxies in the
> path. There is no requirement for proxies to deliver
messages in the
> order they receive them.
> 
> Paul
> 
>>
------------------------------------------------------------
------------
>> 
>> *From Robert
Sparks [mailto:rjsparksnostrum.com]
>> *Sent Wednesday,
June 20, 2007 12:18 PM
>> *To yan
>> *Cc sipietf.org
>> *Subject Re: [Sip]
Could a UA issue a new NOTIFY before the previous 
>> NOTIFYtransaction has completed?
>> 
>>  
>> 
>> Generally speaking, yes.
>> 
>>  
>> 
>> An individual event package may restrict that
behavior though.
>> 
>>  
>> 
>> RjS
>> 
>>  
>> 
>> On Jun 15, 2007, at 12:16 PM, yan wrote:
>> 
>> 
>> 
>> hi:
>> 
>>   Could anyone answer me the question:
>> 
>> Can a UA issue a new NOTIFY before the previous
NOTIFY transaction has 
>> completed?
>> 
>>  thx
>> 
>>  
>> 
>> yan
>> 
>>  
>> 
>>
------------------------------------------------------------
------------
>> 
>> 150 万 人 同 时 在 玩 的 网 游，你 不 试 试 吗 ？ 
>> <http://event.mail.163.com/chanel/xyq.htm?from=163_NO1&g
t;
>> 
>> _______________________________________________
>> 
>> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
>> 
>> This list is for NEW development of the core SIP
Protocol
>> 
>> Use sip-implementorscs.columbia.edu 
>> <mailto:sip-implementorscs.columbia.edu> for
questions on current sip
>> 
>> Use sippingietf.org <mailto:sippingietf.org> for new developments on 
>> the application of sip
>> 
>>  
>> 
>> 
>>
------------------------------------------------------------
------------
>> 
>> _______________________________________________
>> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
>> This list is for NEW development of the core SIP
Protocol
>> Use sip-implementorscs.columbia.edu for
questions on current sip
>> Use sippingietf.org for new developments on the
application of sip
> 
> 
> _______________________________________________
> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
> This list is for NEW development of the core SIP
Protocol
> Use sip-implementorscs.columbia.edu for
questions on current sip
> Use sippingietf.org for new developments on the
application of sip
>_______________________________________________
Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use sip-implementorscs.columbia.edu for questions on current
sip
Use sippingietf.org for new developments on the application of
sip


  


  

    
  

  
  
   
     
    

  

    Re:  Could a UA issue a new NOTIFY
before the previousNOTIFYtransaction has
completed?
  


  

     country flaguser name
United States		
     2007-06-22 07:49:07
  


  

    

Bruce Qi wrote:
> Hi Paul:
>        Is This issue belong to the internal
implementation of SIP production? Beacuse I think there are
many similar issues in the development of SIP production.

Sorry - I don't understand your question.

But in general there are potential issues of this sort in
sending one
request on a dialog before a prior request has completed. It
is best to
be avoided, though in certain cases it may be ok.

	Paul

> Thanks and Regards
> Burce Qi
> 
> 
> ----- Original Message ----- 
> From: "Paul Kyzivat" <pkyzivatcisco.com>
> To: "Arunachalam Venkatraman (arunvenk)"
<arunvenkcisco.com>
> Cc: <sipietf.org>; "yan"
<comet_yan163.com>
> Sent: Friday, June 22, 2007 7:48 AM
> Subject: Re: [Sip] Could a UA issue a new NOTIFY before
the previous NOTIFY transaction has completed?
> 
> 
>>
>> Arunachalam Venkatraman (arunvenk) wrote:
>>> However, if you are using UDP and if the data
in the second NOTIFY is 
>>> additive to and not replacing the prior NOTIFY,
you may run into the 
>>> issue of out-of-sequence delivery.
>> This can be a problem even when using TCP if there
are proxies in the
>> path. There is no requirement for proxies to
deliver messages in the
>> order they receive them.
>>
>> Paul
>>
>>>
------------------------------------------------------------
------------
>>>
>>> *From Robert
Sparks [mailto:rjsparksnostrum.com]
>>> *Sent Wednesday,
June 20, 2007 12:18 PM
>>> *To yan
>>> *Cc sipietf.org
>>> *Subject Re: [Sip]
Could a UA issue a new NOTIFY before the previous 
>>> NOTIFYtransaction has completed?
>>>
>>>  
>>>
>>> Generally speaking, yes.
>>>
>>>  
>>>
>>> An individual event package may restrict that
behavior though.
>>>
>>>  
>>>
>>> RjS
>>>
>>>  
>>>
>>> On Jun 15, 2007, at 12:16 PM, yan wrote:
>>>
>>>
>>>
>>> hi:
>>>
>>>   Could anyone answer me the question:
>>>
>>> Can a UA issue a new NOTIFY before the previous
NOTIFY transaction has 
>>> completed?
>>>
>>>  thx
>>>
>>>  
>>>
>>> yan
>>>
>>>  
>>>
>>>
------------------------------------------------------------
------------
>>>
>>> 150 万 人 同 时 在 玩 的 网 游，你 不 试 试 吗
？ 
>>> <http://event.mail.163.com/chanel/xyq.htm?from=163_NO1&g
t;
>>>
>>>
_______________________________________________
>>>
>>> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
>>>
>>> This list is for NEW development of the core
SIP Protocol
>>>
>>> Use sip-implementorscs.columbia.edu 
>>> <mailto:sip-implementorscs.columbia.edu> for questions on current sip
>>>
>>> Use sippingietf.org
<mailto:sippingietf.org> for new developments on 
>>> the application of sip
>>>
>>>  
>>>
>>>
>>>
------------------------------------------------------------
------------
>>>
>>>
_______________________________________________
>>> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
>>> This list is for NEW development of the core
SIP Protocol
>>> Use sip-implementorscs.columbia.edu for
questions on current sip
>>> Use sippingietf.org for new
developments on the application of sip
>>
>> _______________________________________________
>> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
>> This list is for NEW development of the core SIP
Protocol
>> Use sip-implementorscs.columbia.edu for
questions on current sip
>> Use sippingietf.org for new developments on the
application of sip
>>


_______________________________________________
Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use sip-implementorscs.columbia.edu for questions on current
sip
Use sippingietf.org for new developments on the application of
sip



  


  

    
  

  
  
   
     
    

  

    答复:  Could a UA issue a new NOTIFY
before thepreviousNOTIFYtransaction has
completed?
  


  

     country flaguser name
China		
     2007-06-26 20:32:25
  


  

    
This issue may occur in the case of issuing NOTIFY to
multiple SUBSCRIBE or REFER in a dialog.

Best regards
Gerald
Tel:86-755-26952899 34617

-----邮件原件-----
发件人: Bruce Qi [mailto:qibjhuawei.com] 
发送时间: 2007-06-22 9:05
收件人: SIP; Paul Kyzivat
抄送: Peili Xu
主题: Re: [Sip] Could a UA issue a new NOTIFY before
thepreviousNOTIFYtransaction has completed?

Hi Paul:
       Is This issue belong to the internal implementation
of SIP production? Beacuse I think there are many similar
issues in the development of SIP production.

Thanks and Regards
Burce Qi


----- Original Message ----- 
From: "Paul Kyzivat" <pkyzivatcisco.com>
To: "Arunachalam Venkatraman (arunvenk)"
<arunvenkcisco.com>
Cc: <sipietf.org>; "yan" <comet_yan163.com>
Sent: Friday, June 22, 2007 7:48 AM
Subject: Re: [Sip] Could a UA issue a new NOTIFY before the
previous NOTIFY transaction has completed?


> 
> 
> Arunachalam Venkatraman (arunvenk) wrote:
>> However, if you are using UDP and if the data in
the second NOTIFY is 
>> additive to and not replacing the prior NOTIFY, you
may run into the 
>> issue of out-of-sequence delivery.
> 
> This can be a problem even when using TCP if there are
proxies in the
> path. There is no requirement for proxies to deliver
messages in the
> order they receive them.
> 
> Paul
> 
>>
------------------------------------------------------------
------------
>> 
>> *From Robert
Sparks [mailto:rjsparksnostrum.com]
>> *Sent Wednesday,
June 20, 2007 12:18 PM
>> *To yan
>> *Cc sipietf.org
>> *Subject Re: [Sip]
Could a UA issue a new NOTIFY before the previous 
>> NOTIFYtransaction has completed?
>> 
>>  
>> 
>> Generally speaking, yes.
>> 
>>  
>> 
>> An individual event package may restrict that
behavior though.
>> 
>>  
>> 
>> RjS
>> 
>>  
>> 
>> On Jun 15, 2007, at 12:16 PM, yan wrote:
>> 
>> 
>> 
>> hi:
>> 
>>   Could anyone answer me the question:
>> 
>> Can a UA issue a new NOTIFY before the previous
NOTIFY transaction has 
>> completed?
>> 
>>  thx
>> 
>>  
>> 
>> yan
>> 
>>  
>> 
>>
------------------------------------------------------------
------------
>> 
>> 150 万 人 同 时 在 玩 的 网 游，你 不 试 试 吗 ？ 
>> <http://event.mail.163.com/chanel/xyq.htm?from=163_NO1&g
t;
>> 
>> _______________________________________________
>> 
>> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
>> 
>> This list is for NEW development of the core SIP
Protocol
>> 
>> Use sip-implementorscs.columbia.edu 
>> <mailto:sip-implementorscs.columbia.edu> for
questions on current sip
>> 
>> Use sippingietf.org <mailto:sippingietf.org> for new developments on 
>> the application of sip
>> 
>>  
>> 
>> 
>>
------------------------------------------------------------
------------
>> 
>> _______________________________________________
>> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
>> This list is for NEW development of the core SIP
Protocol
>> Use sip-implementorscs.columbia.edu for
questions on current sip
>> Use sippingietf.org for new developments on the
application of sip
> 
> 
> _______________________________________________
> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
> This list is for NEW development of the core SIP
Protocol
> Use sip-implementorscs.columbia.edu for
questions on current sip
> Use sippingietf.org for new developments on the
application of sip
>


_______________________________________________
Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use sip-implementorscs.columbia.edu for questions on current
sip
Use sippingietf.org for new developments on the application of
sip



  


  

    
  

  
  
   
     
    






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