Best way to check if there is internet?
Alan Bawden
alan at csail.mit.edu
Mon Feb 7 23:29:17 EST 2022
Greg Ewing <greg.ewing at canterbury.ac.nz> writes:
On 8/02/22 8:51 am, Chris Angelico wrote:
> Some day, we'll have people on Mars. They won't have TCP connections -
> at least, not unless servers start supporting connection timeouts
> measured in minutes or hours - but it wouldn't surprise me if some
> sort of caching proxy system is deployed.
Or the internet acquires a new protocol that's designed
for very-long-latency connections.
Very much a hot topic:
https://www.nasa.gov/directorates/heo/scan/engineering/technology/disruption_tolerant_networking_overview
https://en.wikipedia.org/wiki/Delay-tolerant_networking
https://datatracker.ietf.org/doc/html/rfc4838
https://datatracker.ietf.org/doc/html/rfc5050
--
Alan Bawden
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