14 Commits (40c6f952c52162a0a86e19c86397e89b4dfb415b)

Author	SHA1	Message	Date
Brad Fitzpatrick	afc3479d04	netcheck: fix data races for staggler STUN packets arriving after GetReport ... Fixes #179	5 years ago
Brad Fitzpatrick	0d3f42e1d8	netcheck: ignore IPv4 STUN failures if we saw at least one reply ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	ed7e088729	netcheck: ignore IPv6 STUN failures ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
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>	5 years ago
Brad Fitzpatrick	5c1e443d34	wgengine/monitor: don't call LinkChange when interfaces look unchanged ... Basically, don't trust the OS-level link monitor to only tell you interesting things. Sanity check it. Also, move the interfaces package into the net directory now that we have it.	5 years ago
Brad Fitzpatrick	39c0ae1dba	derp/derpmap: new DERP config package, merge netcheck into magicsock more ... Fixes #153 Updates #162 Updates #163 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	2cff9016e4	net/dnscache: add overly simplistic DNS cache package for selective use ... I started to write a full DNS caching resolver and I realized it was overkill and wouldn't work on Windows even in Go 1.14 yet, so I'm doing this tiny one instead for now, just for all our netcheck STUN derp lookups, and connections to DERP servers. (This will be caching a exactly 8 DNS entries, all ours.) Fixes #145 (can be better later, of course)	5 years ago
Brad Fitzpatrick	ff6b3c2c38	netcheck: include two more DERP nodes, show more in CLI report	5 years ago
Brad Fitzpatrick	596fd449b9	netcheck: add TODO about alternate timing strategies	5 years ago
Brad Fitzpatrick	b27d4c017a	magicsock, wgengine, ipn, controlclient: plumb regular netchecks to map poll ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	844d991baf	netcheck: add Report.Clone, return cloned report to avoid races on late replies	5 years ago
Brad Fitzpatrick	bcf3719b9e	netcheck: add hairpinning detection ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	f3c0ea23d9	netcheck, stunner: reduce log spam ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	14559340ee	Start of netcheck package & including network state in Hostinfo. ... * adds new packet "netcheck" to do the checking of UDP, IPv6, and nearest DERP server, and the Report type for all that (and more in the future, probably pulling in danderson's natprobe) * new tailcfg.NetInfo type * cmd/tailscale netcheck subcommand (tentative name, likely to change/move) to print out the netcheck.Report. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago