1df3c8d02a
derp, netcheck: make tests listen on localhost only
...
avoid macOS firewall pop-ups
6 years ago
e749377a56
derp/derphttp: remove a redundant log message
6 years ago
1d3f45f9be
derp/derphttp: ignore PeerGoneMessage in test
6 years ago
1ab5b31c4b
derp, magicsock: send new "peer gone" frames when previous sender disconnects
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Updates #150 (not yet enabled by default in magicsock)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
8c4cef60f8
derp: wait for send goroutine to finish before returning from run
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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.
6 years ago
521ad7b0fc
derp: only flush writes to clients when we're out of things to write
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
0a25abcdaa
derp: remove TODO comment
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It was done in bf704a5218
6 years ago
8519a1b29f
derp: revert rename of pkt to sendMsg
...
New plan, sorry.
Most reverts 77921a31b1
6 years ago
c34b350efa
derp: remove the mutex around and closing of send channel
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Makes it less complicated.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
77921a31b1
derp: rename pkt to sendMsg, in prep for other types of writes
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Updates #150
6 years ago
1453aecb44
derp: add sclient.done channel, simplify some context passing
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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.
6 years ago
ea90780066
derp: specify type of the by-reason drop varz.
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Signed-off-by: David Anderson <dave@natulte.net>
6 years ago
fd824df1fa
derp: export metric for server's initial MemStats.Sys reading
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
64b5248929
derp: sprinkle comments and docstrings.
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Signed-off-by: David Anderson <dave@natulte.net>
6 years ago
58b8ebd290
derp: add per-reason packet drop counter.
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In parallel with the summed counter for now, for dashboard migration.
Signed-off-by: David Anderson <dave@natulte.net>
6 years ago
1e031001db
derp: move write timeout to package constant.
...
Signed-off-by: David Anderson <dave@natulte.net>
6 years ago
dbfc916273
derp: add short queues between reader and writer, drop on overload.
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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>
6 years ago
131541c06d
derp: deflake test
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Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
6 years ago
72dbf26f63
derp: test that client a->b and a->c relaying do not interfere
...
Without the recent write deadline introduction, this test fails.
They still do interfere, but the interference is now bound by
the write deadline. Many improvements are possible.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
6 years ago
e838b3fb59
derp: use a write timeout when sending to clients
...
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
6 years ago
3df1b97ea8
derp: do not treat failure to relay as the fault of the sender
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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>
6 years ago
43aa8595dd
derp: introduce Conn interface
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This lets us test with something other than a net.Conn.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
6 years ago
4fd29349b9
derp: add clients_replaced counter
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Updates #109
6 years ago
39c0ae1dba
derp/derpmap: new DERP config package, merge netcheck into magicsock more
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Fixes #153
Updates #162
Updates #163
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
5d8001d0ad
derp: add varz for home moves
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Updates #162
Updates #163 (maybe)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
e733fa6f7e
derp: add some varz tests for active/home conns
6 years ago
dd456f04c5
derp: actually record client's preferred bit
6 years ago
6978b93bdd
derp, magicsock: track home (preferred) vs visiting connections for stats
6 years ago
cf4aacde57
derp/derphttp: appease staticcheck
6 years ago
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)
6 years ago
bf704a5218
derp: protocol negotiation, add v2: send src pub keys to clients in packets
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
9be9738f62
derphttp: add TLSConfig field
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Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
6 years ago
e371520cc5
tsweb, derp: add expvar http.Handler for Prometheus's format
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And add some opinions.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
517a91de75
derp/derphttp: fix reconnect behavior
...
I broke it in today's 752146a70f
6 years ago
d59d0576af
derp: don't log on all dropped packets; super spammy
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Signed-off-by: Brad Fitzpatrick <brad@danga.com>
6 years ago
38acccad09
derp: remove some debug noise I left in
...
:(
6 years ago
752146a70f
derp: clean up derphttp client code, use contexts
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
3317531021
derp: fix JSON field typo, sort fields to make it easier to see inconsistencies
6 years ago
6cd81d5d1f
derp: add more derp stats for dropped and received packets
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
2612e54ad1
derp, cmd/derper: add debug handlers, stats
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
379a3125fd
derp, wgengine/magicsock: support more than just packets from Client.Recv
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
88f1cc0c98
derp, cmd/derper: add rate limiting support, add default 5Mbps limit
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
1166c34f6c
derp: fix staticcheck warning
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
322cb58b14
derp: deflake test I flaked up in earlier change
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I broke an invariant in 11048b8932Fixes #84
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
f029c4c82d
derp: change the protocol framing to always include a length
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Addresses one of crawshaw's TODOs.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
11048b8932
derp: add docs on current protocol overview, break accept apart a bit
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
79af6054bf
derp: don't start sending keepalives to client until after serverInfo sent
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
1155716318
derp: rename some things in the client, add some docs
...
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
4b461c2e77
derp: rename some things in the server, add some docs
6 years ago
619697063e
derp: more misc cleanups
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And add an explicit derphttp.Client.Connect in the test now that it's
done lazily.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 years ago
Brad Fitzpatrick
David Anderson
David Crawshaw
Brad Fitzpatrick