At Wed, 05 Mar 2008 11:24:42 -0500, jiangxingfeng 36340 wrote: > > One more comment on hop-by-hop reliability model: > > ACK is only used when the underlying transport protocol is a > unreliable one, such as DTLS. But if the TLS/TCP is used, the > message could be considered reliable between two TCP entities, but > we are not sure whether the receiving peer has really processed the > message.
But this is always the case. The peer protocol stack could crash right after sending the ACK, after all. (this is of course the point of Saltzer et al.'s End-To-End paper). > In that case, does the sending peer retransmit the message? > when? Yes, there is an end-to-end retransmit (see S 5.) -Ekr _______________________________________________ P2PSIP mailing list [email protected] https://www.ietf.org/mailman/listinfo/p2psip
