node-coap-client
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Support sending fragmented messages
This is the first issue on the roadmap to fully support RFC 7959. Receiving fragmented messages is being worked on in #22 so it would be nice to being able to send them aswell.
See https://tools.ietf.org/html/rfc7959#section-2.5 for details:
In a request with a request payload (e.g., PUT or POST), the Block1 Option refers to the payload in the request (descriptive usage).
Ideally, this block size respects the preferred block size of the server (#25).