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RE: [ebxml-msg] Large file transmission using AS2 restart

  • 1.  RE: [ebxml-msg] Large file transmission using AS2 restart

    Posted 03-29-2010 20:10 
    






    Please 
review section 4.4.3 and let us know:
    

     
    

    1) 
Assuming Pmode.[1].Protocol.Restart set to True 
and  
Pmode.[1].Protocol.Restart.Protocol set to 
'as2-restart", is  
Pmode.[1].Protocol.Restart.Interval the only 
relevant configuration / agreement parameter?   We discussed an 
interval between each restart as separate parameter, but after the call I 
thought an interval for the first to last restart covers all that is 
needed.
    

     
    

    2) Can 
AS2 Restarts be adapted to support situations where the restart is initiated by 
the message responder rather than the initiator? See discussion 
below.
    

     
    

    3) 
ebMS 3.0 also supports SMTP as a transport protocol, in fact some of the early 
ebMS 3.0 users are using this instead of HTTP. Is there an 
AS2 restart-like protocol for AS1 ?  There is RFC 1845 for SMTP, 
but it is from 1995 and still "experimental". 
    

     
    

    Pim

    

    

    
From: Aaron [mailto:aaron@drummondgroup.com]
    Sent: 29 March 2010 20:55
    To: 'Pim van der Eijk'; 'Moberg 
Dale'; timothy@drummondgroup.com
    Cc: 
ebxml-msg@lists.oasis-open.org
    Subject: RE: [ebxml-msg] Large file 
transmission using AS2 restart

    

    

    

    All,
    

    

    What specific questions 
were discussed last week in regards to AS2 Restart proper?  My 
understanding is that there were questions for instances if messages expire? 
  Any others?  
    

    

    Aaron 
Gomez
    

    DGI
    

    

    

    

    

    

    From: Pim van der 
Eijk [mailto:pvde@sonnenglanz.net]
    Sent: Monday, March 29, 2010 11:50 
AM
    To: 'Moberg Dale';
    Cc: 
ebxml-msg@lists.oasis-open.org
    Subject: RE: [ebxml-msg] Large file 
transmission using AS2 restart
    

    

    

     
    

    

    In the update (v56) I 
just posted, I've added a restriction to "push" mode when using AS Restart, to 
be able to use this feature without modification.  And left open the 
possibility to specify other transport-level restart mechanisms.  AS2 
Restart will still be useful for ebMS since deployments where this feature is 
needed will typically not be the small companies that motivated "pull" but 
medium or large organizations, so in practice many of the intended users would 
be served.  
    

    

     
    

    

    But perhaps we should 
still to a SOAP-level chunking/splitting mechanism to get a really general 
solution.
    

    

     
    

    

    Pim
    

    

    

    

    

    From: Moberg Dale 
[mailto:dmoberg@axway.com]
    Sent: 29 March 2010 18:08
    To: Pim van der Eijk;
    Cc: 
ebxml-msg@lists.oasis-open.org
    Subject: RE: [ebxml-msg] Large file 
transmission using AS2 restart
    

    Good question. 

    

    

    Restart was intended 
mainly for POST HTTP messaging with the “payload” sent in the POST, not in the 
response. This can be seen in that the sender (the POSTer) needs to find out 
from the receiver (using HEAD) how much data was received for an identified 
payload.
    

    

    In the reverse case 
(using the “backchannel”) some other solution is needed. GET with a byte range? 
Re-POST with a payload identifier and something indicating the byte ranged that 
is still needed? 
    

    

    

    

    

    

    From: Pim van der 
Eijk [mailto:pvde@sonnenglanz.net]
    Sent: Sunday, March 28, 2010 10:27 
PM
    To:
    Cc: 
ebxml-msg@lists.oasis-open.org
    Subject: RE: [ebxml-msg] Large file 
transmission using AS2 restart
    

    

    

    Hello,
    

    

     
    

    

    AS2 only supports 
"pushed" messages, and this is what AS2 Restart 
supports.
    

    

    A question is whether 
this mechanism could be used for large "pulled" messages.   

    

    

     
    

    

    Pim
    

    

     
    

    

    (I will post an updated 
version of the spec today or tomorrow)
    

    

    

    

    

    From: Timothy 
Bennett [mailto:]
    Sent: 26 March 2010 16:51
    To:
    Cc: Pim 
van der Eijk; ebxml-msg@lists.oasis-open.org
    Subject: Re: [ebxml-msg] Large file 
transmission using AS2 restart
    

    During last Wednesday's discussion 
on the TC about using AS2 Restart, there were a number of questions raised about 
the spec that couldn't be answered.  Would you folks that raised questions, 
please post them here, so that I can submit them to Aaron Gomez here at Drummond 
Group so that he and Terry Harding (Axway; AS2 Restart spec editor) to 
brainstorm/prepare 
responses.

    Thanks!

     wrote: 
    New drafts will be issued until a decision is made about advancing it
    through the IETF RFC process. I would have to find out whether there are
    any dependencies on existing drafts. But mainly nothing unusual seems to
    be in store for the draft's progress because it will meet the IP
    policies and it is an informational RFC. Therefore, it does not have to
    go through the same reviews as a standards track RFC would go through.


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