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[core] RFC 7967 (No-Response) together with block-wise transfers in CoAP

Fredrik Wegelid <fredrik.wegelid@wittra.se> Wed, 26 June 2019 11:30 UTC

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From: Fredrik Wegelid <fredrik.wegelid@wittra.se>
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Date: Wed, 26 Jun 2019 13:30:40 +0200
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Subject: [core] RFC 7967 (No-Response) together with block-wise transfers in CoAP
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Hi,

I hope that I am using this email list in the correct way. I apologise if that is not the case.
I have some questions/thoughts about using the No-Response option (RFC 7967) together with block-wise transfers in COAP.

In my team we are using CoAP to send messages from devices to a server. The messages are of such a size that we need to make block-wise transfers. In an attempt to reduce the amount of traffic in the network we have looked at using the No-Response option. We are however not clear on how this would work if used together with block-wise transfers. We would like to use the No-Response option to make the server omit the 2.31 Continue responses from the server on each block. We would however still like to be able to get a response on the last block to indicate the status of the entire block sequence. 

Does this make sense? In RFC 7967 block-wise transfers are not mentioned. Are they meant to be used together?

Best regards,
Fredrik Wegelid

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