tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	e6d0c92b1d	wgengine/magicsock: clean up earlier fix a bit Move WaitReady from `fc88e34f42` into the test code, and keep the derp-reading goroutine named for debugging.	5 years ago
Avery Pennarun	fc88e34f42	wgengine/magicsock/tests: wait for home DERP connection before sending packets. This fixes an elusive test flake. Fixes #161. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	4f128745d8	magicsock/test: oops, fix a data race in nested-test logf hack. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	42a0e0c601	wgengine/magicsock/tests: call tstest.ResourceCheck for each test. This didn't catch anything yet, but it's good practice for detecting goroutine leaks that we might not find otherwise. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	08acb502e5	Add tstest.PanicOnLog(), and fix various problems detected by this. If a test calls log.Printf, 'go test' horrifyingly rearranges the output to no longer be in chronological order, which makes debugging virtually impossible. Let's stop that from happening by making log.Printf panic if called from any module, no matter how deep, during tests. This required us to change the default error handler in at least one http.Server, as well as plumbing a bunch of logf functions around, especially in magicsock and wgengine, but also in logtail and backoff. To add insult to injury, 'go test' also rearranges the output when a parent test has multiple sub-tests (all the sub-test's t.Logf is always printed after all the parent tests t.Logf), so we need to screw around with a special Logf that can point at the "current" t (current_t.Logf) in some places. Probably our entire way of using subtests is wrong, since 'go test' would probably like to run them all in parallel if you called t.Parallel(), but it definitely can't because the're all manipulating the shared state created by the parent test. They should probably all be separate toplevel tests instead, with common setup/teardown logic. But that's a job for another time. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Dmytro Shynkevych	33b2f30cea	wgengine: wrap tun.Device to support filtering and packet injection (#358 ) Right now, filtering and packet injection in wgengine depend on a patch to wireguard-go that probably isn't suitable for upstreaming. This need not be the case: wireguard-go/tun.Device is an interface. For example, faketun.go implements it to mock a TUN device for testing. This patch implements the same interface to provide filtering and packet injection at the tunnel device level, at which point the wireguard-go patch should no longer be necessary. This patch has the following performance impact on i7-7500U @ 2.70GHz, tested in the following namespace configuration: ┌────────────────┐ ┌─────────────────────────────────┐ ┌────────────────┐ │ $ns1 │ │ $ns0 │ │ $ns2 │ │ client0 │ │ tailcontrol, logcatcher │ │ client1 │ │ ┌─────┐ │ │ ┌──────┐ ┌──────┐ │ │ ┌─────┐ │ │ │vethc│───────┼────┼──│vethrc│ │vethrs│──────┼─────┼──│veths│ │ │ ├─────┴─────┐ │ │ ├──────┴────┐ ├──────┴────┐ │ │ ├─────┴─────┐ │ │ │10.0.0.2/24│ │ │ │10.0.0.1/24│ │10.0.1.1/24│ │ │ │10.0.1.2/24│ │ │ └───────────┘ │ │ └───────────┘ └───────────┘ │ │ └───────────┘ │ └────────────────┘ └─────────────────────────────────┘ └────────────────┘ Before: --------------------------------------------------- \| TCP send \| UDP send \| \|------------------------\|------------------------\| \| 557.0 (±8.5) Mbits/sec \| 3.03 (±0.02) Gbits/sec \| --------------------------------------------------- After: --------------------------------------------------- \| TCP send \| UDP send \| \|------------------------\|------------------------\| \| 544.8 (±1.6) Mbits/sec \| 3.13 (±0.02) Gbits/sec \| --------------------------------------------------- The impact on receive performance is similar. Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	5 years ago
Brad Fitzpatrick	577f321c38	wgengine/magicsock: revise derp fallback logic Revision to earlier `6284454ae5` Don't be sticky if we have no peers. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	e085aec8ef	all: update to wireguard-go API changes Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	b9c6d3ceb8	netcheck: work behind UDP-blocked networks again, add tests Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	b0f8931d26	wgengine/magicsock: make a test signature a bit more explicit	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
David Anderson	77af7e5436	wgengine/magicsock: mark test logfunc as a helper. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	7eda3af034	wgengine/magicsock: clean up derp http servers on shutdown. Failure to do this leads to fd exhaustion at -count=10000, and increasingly poor execution north of -count=100. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	d651715528	wgengine/magicsock: synchronize test STUN shutdown. Failure to do so triggers either a data race or a panic in the testing package, due to racey use of t.Logf. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	592fec7606	wgengine/magicsock: move device close to uncursed portion of test. Device close used to suffer from deadlocks, but no longer. Signed-off-by: David Anderson <danderson@tailscale.com>	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	4800926006	wgengine/magicsock: add AddrSet appendDests+UpdateDst tests	5 years ago
David Crawshaw	e201f63230	magicsock: unskip tests that are reliable Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Anderson	bb93d7aaba	wgengine/magicsock: plumb logf throughout, and expose in Options. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	e3172ae267	wgengine/magicsock: uncurse TestDeviceStartStop, let CI run it. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	77354d4617	wgengine/magicsock: unblock wireguard-go's read on magicsock shutdown. wireguard-go closes magicsock, and expects this to unblock reads so that its internal goroutines can wind down. We were incorrectly blocking the read indefinitey and breaking this contract. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	fdee5fb639	wgengine/magicsock: don't mutexly reach inside Conn to tweak DERP settings. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	643bf14653	wgengine/magicsock: disable the new ping test. It's extremely flaky in several dimensions, as well as very slow. It's making the CI completely red all the time without telling us useful information. Set RUN_CURSED_TESTS=1 to run locally.	5 years ago
David Anderson	c8ebac2def	wgengine/magicsock: try deflaking again. This change just alters the semantics of the one flaky test, without trying to speed up timeouts on the others. Empirically, speeding up the timeouts causes _more_ flakes right now :(	5 years ago
David Anderson	cd1ac63b4c	Revert "wgengine/magicsock: temporarily deflake." This reverts commit `c5835c6ced`.	5 years ago
David Anderson	c5835c6ced	wgengine/magicsock: temporarily deflake. The remaining flake occurs due to a mysterious packet loss. This doesn't affect normal tailscaled operations, so until I track down where the loss occurs and fix it, the flaky test is going to be lenient about packet loss (but not about whether the spray logic worked). Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	bd60a750e8	wgengine/magicsock: fix packet spraying test to (mostly) pass. It previously passed incorrectly due to bugs. With those fixed, it becomes flaky for 2 reasons. One of them is the wireguard handshake race, which can eat the 1st sprayed packet and prevent roamAddr discovery. This change fixes that failure, by spreading the test traffic out enough that additional spraying occurs. Signed-Off-By: David Anderson <danderson@tailscale.com>	5 years ago
David Crawshaw	a65b2a0efd	magicsock: add some DERP tests Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	caec2c7e8b	magicsock: test sequence of pings Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	9f584414d9	magicsock: simple ping test via magicsock Passes `go test -count=20 -race ./wgengine/magicsock` Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	75e62d318f	magicsock: use local STUN server in tests Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	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	724c37fb41	wgengine/magicsock: start tracking nearest DERP node	5 years ago
Brad Fitzpatrick	d298d5b1f8	wgengine/magicsock: support multiple derp servers, and not just for handshakes Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	e06ca40650	wgengine, magicsock, derp: misc cleanups, docs Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Earl Lee	a8d8b8719a	Move Linux client & common packages into a public repo.	5 years ago

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136 Commits (f116a4c44f2fa2430eeb948674d678d1b94f8526)