Subject: [core] coap-tcp-tls pull requests available for review

From: Brian Raymor <[email-masked]>
Date: Wed, 17 Aug 2016 23:01:51 +0000

A pull request with the more detailed guidance on ALPN and port 5684 is available - https://github.com/core-wg/coap-tcp-tls/pull/56 - Thanks to Carsten and Christian for their earlier feedback.

A pull request for the mandatory exchange of capability and setting messages (csm) is available - https://github.com/core-wg/coap-tcp-tls/pull/55

One open question is whether we want to allow a client to immediately send messages after sending its CSM without waiting for the server CSM. This would be similar to HTTP/2:

https://tools.ietf.org/html/rfc7540#section-3.5

  To avoid unnecessary latency, clients are permitted to send
   additional messages to the server immediately after sending the client
   connection preface, without waiting to receive the server connection
   preface.  It is important to note, however, that the server
   connection preface SETTINGS frame might include parameters that
   necessarily alter how a client is expected to communicate with the
   server.  Upon receiving the SETTINGS frame, the client is expected to
   honor any parameters established.  In some configurations, it is
   possible for the server to transmit SETTINGS before the client sends
   additional frames, providing an opportunity to avoid this issue.

And there's a pull request for ping vs ping - https://github.com/core-wg/coap-tcp-tls/pull/54