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Subject: RE: [ebxml-msg] Large file transmission using AS2 restart
I asked Terry Harding (author/editor) of the draft and he and I agree that there is no obstacle in using the procedure with any HTTP POST based protocol. There is a new HTTP header with an ID, and there is state to retain on the receiver(and sender) side. The receiver also needs to support the HEAD HTTP request. (It also pretends that a GET request on the resource URI exists and is defined so that it would have a content-length associated with it that the HEAD requests return. This content-length number allows the sender to know where to restart, if necessary.) Remember that the document is currently an Internet-Draft and not yet a RFC. -----Original Message----- From: Pim van der Eijk [mailto:pvde@sonnenglanz.net] Sent: Wednesday, March 24, 2010 7:52 AM To: ebxml-msg@lists.oasis-open.org Subject: [ebxml-msg] Large file transmission using AS2 restart Hello, There is a requirement of some potential users of ebMS 3.0 to be able to exchange large files (Gigabytes and larger). There is a specification for AS2 that offers a "restart" feature: http://www.ietf.org/id/draft-harding-as2-restart-00.txt We can borrow this feature for ebMS, and add a mini-section to chapter 4 that references the AS2 feature. Since we just reference the IETF RFC, this feature adds just a few lines of text to the spec. Many multi-protocol B2B products support this for AS2 already. It would be minimal effort for them to enable this for ebMS. For ebMS users, it adds a useful capability. As we did for pipelining, we could add a Pmode parameter to indicate whether the ebMS MSH supports it or not. If "True", clients in HTTP client mode can add the HTTP ETAG with ebMS messages sent and can use the HTTP HEAD command to obtain the status of the transfer, as described in the RFC. If "False", they should not do this. We've added Pipelining to MEPBinding, and could do the same with "Restart": PMode.MEPbinding.Restart {True/False} Or we could make it a parameter in PMode.Protocol What do people think? Pim --------------------------------------------------------------------- To unsubscribe from this mail list, you must leave the OASIS TC that generates this mail. Follow this link to all your TCs in OASIS at: https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php
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