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125 Commits

Author SHA1 Message Date
David Crawshaw
3df1b97ea8 derp: do not treat failure to relay as the fault of the sender 
If Alice attempts to send a packet to Bob and the DERP server
encounters an error on the socket to Bob, we should not disconnect
Alice for that.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-12 14:42:48 -04:00
David Crawshaw
43aa8595dd derp: introduce Conn interface 
This lets us test with something other than a net.Conn.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-12 14:42:48 -04:00
Brad Fitzpatrick
4fd29349b9 derp: add clients_replaced counter 
Updates #109
 2020-03-11 11:55:43 -07:00
Brad Fitzpatrick
5d8001d0ad derp: add varz for home moves 
Updates #162
Updates #163 (maybe)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-09 11:09:27 -07:00
Brad Fitzpatrick
dd456f04c5 derp: actually record client's preferred bit 2020-03-05 19:02:54 -08:00
Brad Fitzpatrick
6978b93bdd derp, magicsock: track home (preferred) vs visiting connections for stats 2020-03-05 15:00:56 -08:00
Brad Fitzpatrick
bf704a5218 derp: protocol negotiation, add v2: send src pub keys to clients in packets 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-04 09:55:13 -08:00
Brad Fitzpatrick
e371520cc5 tsweb, derp: add expvar http.Handler for Prometheus's format 
And add some opinions.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-03 13:59:16 -08:00
Brad Fitzpatrick
d59d0576af derp: don't log on all dropped packets; super spammy 
Signed-off-by: Brad Fitzpatrick <brad@danga.com>
 2020-02-28 13:33:47 -08:00
Brad Fitzpatrick
752146a70f derp: clean up derphttp client code, use contexts 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-28 13:18:59 -08:00
Brad Fitzpatrick
3317531021 derp: fix JSON field typo, sort fields to make it easier to see inconsistencies 2020-02-21 14:18:09 -08:00
Brad Fitzpatrick
6cd81d5d1f derp: add more derp stats for dropped and received packets 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-21 14:13:50 -08:00
Brad Fitzpatrick
2612e54ad1 derp, cmd/derper: add debug handlers, stats 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-21 09:35:53 -08:00
Brad Fitzpatrick
379a3125fd derp, wgengine/magicsock: support more than just packets from Client.Recv 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-20 22:08:13 -08:00
Brad Fitzpatrick
88f1cc0c98 derp, cmd/derper: add rate limiting support, add default 5Mbps limit 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-20 15:26:30 -08:00
Brad Fitzpatrick
322cb58b14 derp: deflake test I flaked up in earlier change 
I broke an invariant in 11048b8932 (it was even nicely
documented then).

Also clean up the test a bit from while I was debugging it.

Fixes #84

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-20 14:41:39 -08:00
Brad Fitzpatrick
f029c4c82d derp: change the protocol framing to always include a length 
Addresses one of crawshaw's TODOs.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-20 13:37:44 -08:00
Brad Fitzpatrick
11048b8932 derp: add docs on current protocol overview, break accept apart a bit 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-20 09:57:05 -08:00
Brad Fitzpatrick
79af6054bf derp: don't start sending keepalives to client until after serverInfo sent 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-20 09:34:01 -08:00
Brad Fitzpatrick
4b461c2e77 derp: rename some things in the server, add some docs 2020-02-20 08:50:25 -08:00
Brad Fitzpatrick
619697063e derp: more misc cleanups 
And add an explicit derphttp.Client.Connect in the test now that it's
done lazily.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-18 10:09:37 -08:00
Brad Fitzpatrick
259406e797 derp: move away from [32]byte key types 
And some minor cleanup in the process.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-17 14:18:09 -08:00
Brad Fitzpatrick
2896be60db Move "logger" package to under types, now that we have it. 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-14 20:23:05 -08:00
Brad Fitzpatrick
a59dc5f155 Use logger.Logf consistently. It was used in most places. 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-11 09:38:32 -08:00
Earl Lee
a8d8b8719a Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00