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Author SHA1 Message Date
Brad Fitzpatrick
e749377a56 derp/derphttp: remove a redundant log message 2020-03-23 21:23:36 -07:00
Brad Fitzpatrick
1d3f45f9be derp/derphttp: ignore PeerGoneMessage in test 2020-03-23 14:13:49 -07:00
Brad Fitzpatrick
ea9310403d wgengine/magicsock: re-STUN on DERP connection death 
Fixes #201
 2020-03-23 13:19:33 -07:00
Brad Fitzpatrick
1ab5b31c4b derp, magicsock: send new "peer gone" frames when previous sender disconnects 
Updates #150 (not yet enabled by default in magicsock)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-22 21:00:47 -07:00
David Crawshaw
e60b433831 tailcfg: NetInfo.String: handle nil object without panicing 
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-23 13:34:33 +11:00
Brad Fitzpatrick
b6f77cc48d wgengine/magicsock: return early, outdent in derpWriteChanOfAddr 2020-03-22 14:08:59 -07:00
Brad Fitzpatrick
8c4cef60f8 derp: wait for send goroutine to finish before returning from run 
I saw a test flake due to the sender goroutine logging (ultimately to
t.Logf) after the server was closed.

This makes sure the all goroutines are cleaned up before Server.Close
returns.
 2020-03-22 13:10:07 -07:00
Brad Fitzpatrick
521ad7b0fc derp: only flush writes to clients when we're out of things to write 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-22 08:01:25 -07:00
Brad Fitzpatrick
0a25abcdaa derp: remove TODO comment 
It was done in bf704a5218
 2020-03-22 07:54:50 -07:00
Brad Fitzpatrick
8519a1b29f derp: revert rename of pkt to sendMsg 
New plan, sorry.

Most reverts 77921a31b1, except some doc changes.
 2020-03-21 22:17:22 -07:00
Brad Fitzpatrick
c34b350efa derp: remove the mutex around and closing of send channel 
Makes it less complicated.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-21 22:00:04 -07:00
Brad Fitzpatrick
77921a31b1 derp: rename pkt to sendMsg, in prep for other types of writes 
Updates #150
 2020-03-21 20:34:49 -07:00
Brad Fitzpatrick
1453aecb44 derp: add sclient.done channel, simplify some context passing 
This is mostly prep for a few future CLs, making sure we always have a
close-on-dead done channel available to select on when doing other
channel operations.
 2020-03-21 18:28:34 -07:00
David Anderson
ea90780066 derp: specify type of the by-reason drop varz. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-20 15:53:04 -07:00
Brad Fitzpatrick
fd824df1fa derp: export metric for server's initial MemStats.Sys reading 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-20 15:37:36 -07:00
David Anderson
64b5248929 derp: sprinkle comments and docstrings. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-20 15:14:01 -07:00
David Anderson
58b8ebd290 derp: add per-reason packet drop counter. 
In parallel with the summed counter for now, for dashboard migration.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-20 15:14:01 -07:00
David Anderson
1e031001db derp: move write timeout to package constant. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-20 15:14:01 -07:00
David Anderson
dbfc916273 derp: add short queues between reader and writer, drop on overload. 
This avoids the server blocking on misbehaving or heavily contended
clients. We attempt to drop from the head of the queue to keep
overall queueing time lower.

Also:
 - fixes server->client keepalives, which weren't happening.
 - removes read rate-limiter, deferring instead to kernel-level
   global limiter/fair queuer.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-20 15:14:01 -07:00
Brad Fitzpatrick
dd31285ad4 wgengine/magicsock: send IPv6 using pconn6, if available 
In prep for IPv6 support. Nothing should make it this far yet.
 2020-03-20 14:30:12 -07:00
Brad Fitzpatrick
af277a6762 controlclient, magicsock: add debug knob to request IPv6 endpoints 
Add opt-in method to request IPv6 endpoints from the control plane.
For now they should just be skipped. A previous version of this CL was
unconditional and reportedly had problems that I can't reproduce. So
make it a knob until the mystery is solved.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-20 14:27:24 -07:00
Brad Fitzpatrick
221e7d7767 wgengine/magicsock: make log message include DERP port (node) 2020-03-20 13:51:20 -07:00
Brad Fitzpatrick
33bdcabf03 wgengine/magicsock: call stun callback w/ only valid part of STUN packet 2020-03-20 13:44:27 -07:00
David Crawshaw
13eed1e88b controlclient: remove common log on very quiet nodes 
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-21 07:11:10 +11:00
Brad Fitzpatrick
f9cc4e8f53 tailcfg: restore MapRequest.IncludeIPv6 bool 
Partially restores 0be475ba46
 2020-03-20 08:13:47 -07:00
David Anderson
0be475ba46 Revert "tailcfg, controlclient, magicsock: request IPv6 endpoints, but ignore them" 
Breaks something deep in wireguard or magicsock's brainstem, no packets at all
can flow. All received packets fail decryption with "invalid mac1".

This reverts commit 94024355ed.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-20 03:26:17 -07:00
Brad Fitzpatrick
f9184ad12b go.mod: update wireguard-go for https://github.com/tailscale/wireguard-go/pull/13 2020-03-19 22:46:36 -07:00
Brad Fitzpatrick
94024355ed tailcfg, controlclient, magicsock: request IPv6 endpoints, but ignore them 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-19 21:01:52 -07:00
David Anderson
12a6626a94 tsweb: use a ResponseWriter wrapper to log more accurately. 
Also adds tests, because the logging handler is acquiring a fair
number of branches.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-19 20:11:07 -07:00
David Anderson
2e43cd3f95 testy: add a virtual clock helper for tests. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-19 20:11:07 -07:00
Brad Fitzpatrick
b1d5548fa7 tailcfg: make NodeKey.IsZero have a value receiver 2020-03-19 20:00:32 -07:00
Brad Fitzpatrick
51b669e4bd ipn: skip tailscaled UDP ports in service list 2020-03-19 19:56:02 -07:00
Brad Fitzpatrick
60ea635c6d wgengine/magicsock: delete inaccurate comment 
I meant to include this in the earlier commit.
 2020-03-19 19:48:02 -07:00
David Crawshaw
6ddbcab71e logtail: rename the unused CheckLogs to DrainLogs 
Its semantics has changed slightly, this will let us use it to
drive batched logging in special circumstances.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-20 13:26:33 +11:00
David Crawshaw
51a12d1307 filch: a few minor comments 
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-20 13:20:45 +11:00
Brad Fitzpatrick
a184e05290 wgengine/magicsock: listen on udp6, use it for STUN, report endpoint 
More steps towards IPv6 transport.

We now send it to tailcontrol, which ignores it.

But it doesn't actually actually support IPv6 yet (outside of STUN).

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-19 13:54:38 -07:00
Brad Fitzpatrick
073bb8de80 control/controlclient: don't use Node as value type 2020-03-19 13:19:02 -07:00
Brad Fitzpatrick
7caa288213 wgengine/magicsock: rename pconn field to pconn4, in prep for pconn6 2020-03-19 08:49:30 -07:00
Brad Fitzpatrick
5fa825f057 go.mod, go.sum: update 2020-03-19 08:49:12 -07:00
David Crawshaw
addbdce296 wgengine, ipn: include number of active DERPs in status 
Use this when making the ipn state transition from Starting to
Running. This way a network of quiet nodes with no active
handshaking will still transition to Active.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-19 17:55:16 +11:00
David Crawshaw
1ad78ce698 magicsock: reconnect to home DERP on key change 
Typically the home DERP server is found and set on startup before
magicsock's SetPrivateKey can be called, so no DERP connection is
established. Make sure one is by kicking the home DERP tires in
SetPrivateKey.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-19 17:53:44 +11:00
David Crawshaw
455ba751d9 magicsock: start connection to HOME derp immediately 
The code as written intended to do this, but it repeated the
comparison of derpNum and c.myDerp after c.myDerp had been
updated, so it never executed.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-19 17:36:30 +11:00
David Crawshaw
73cae4eb11 tailcfg, controlclient: standardize on wgcfg ShortString key printing 
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-19 09:17:34 +11:00
David Crawshaw
acd14960f8 go.mod: bump wireguard-go 
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-19 09:10:13 +11:00
Brad Fitzpatrick
14a2564ef0 go.mod: bump wireguard-go 2020-03-18 13:26:08 -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
6de37f4cc0 tsweb: move some comments, add a TODO 2020-03-18 09:54:48 -07:00
David Anderson
df4636567f tsweb: adjust names and docs of the "handler with errors" functions. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-18 01:39:01 -07:00
David Crawshaw
131541c06d derp: deflake test 
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-03-18 16:33:25 +11:00
David Anderson
52d9613b42 github: add license check to CI. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-17 21:34:44 -07:00