4 Commits

Author	SHA1	Message	Date
Brad Fitzpatrick	1df3c8d02a	derp, netcheck: make tests listen on localhost only ... avoid macOS firewall pop-ups	2020-03-30 11:29:08 -07:00
Brad Fitzpatrick	19a1704abd	netcheck: use best DERP server in past 5 minutes to avoid flip-flopping ... Fixes #162	2020-03-18 13:07:13 -07:00
Brad Fitzpatrick	b9c6d3ceb8	netcheck: work behind UDP-blocked networks again, add tests ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2020-03-12 14:49:06 -07:00
Brad Fitzpatrick	01b4bec33f	stunner: re-do how Stunner works ... It used to make assumptions based on having Anycast IPs that are super near. Now we're intentionally going to a bunch of different distant IPs to measure latency. Also, optimize how the hairpin detection works. No need to STUN on that socket. Just use that separate socket for sending, once we know the other UDP4 socket's endpoint. The trick is: make our test probe also a STUN packet, so it fits through magicsock's existing STUN routing. This drops netcheck from ~5 seconds to ~250-500ms. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2020-03-11 08:08:48 -07:00