Comment by p-e-w
1 day ago
Matrix published a proof of concept a few years ago of an alternative transport layer designed to work over connections with a few hundred bits per second, and massive packet loss, while still providing E2EE:
https://matrix.org/blog/2019/03/12/breaking-the-100bps-barri...
Without knowing that much about this area, i think https://mosh.org/ is a traditional choice if you need encrypted communication in a high packet loss environment.
UDP is certainly not known to improve traffic reliability in those environments. TCP is
UDP is build your own reliability layer, so its going to depend on how you use it.
[Of course you could say the same thing about TCP i suppose depending on which congestion control algorithm is in use]