[TLS] SCHC header compression

2019-11-27 Thread dominique.barthel
Hello Hannes, all, I'm a co-author of the SCHC draft (https://datatracker.ietf.org/doc/draft-ietf-lpwan-ipv6-static-context-hc/), which has passed IESG review. I may be unfortunate that the draft contains 3 distinct deliverables in one document - a generic header compression mechanism, which

Re: [TLS] [DTLS1.3]About the retransmission of Handshake records

2019-11-27 Thread Eric Rescorla
On Tue, Nov 26, 2019 at 10:05 PM Xuan k wrote: > Hi all, > > I'm trying to implement a DTLS1.3 library for embedded devices. But It > seems something weird about retransmissions and ACKs. > > In the section "5.2. DTLS Handshake Message Format": > >The first message each side transmits in each

Re: [TLS] [DTLS1.3]About the retransmission of Handshake records

2019-11-27 Thread Xuan k
Hi Ekr, Thanks for your help. I have another question about the "message_seq" in section "6. Example of Handshake with Timeout and Retransmission". Could you please explain it? In the secion 6, the Client send message_seq = 0 in Record 0 and message_seq = 2,3,4 in Record 2. Why message_seq = 1