tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	41fd4eab5c	envknob: add new package for all the strconv.ParseBool(os.Getenv(..)) A new package can also later record/report which knobs are checked and set. It also makes the code cleaner & easier to grep for env knobs. Change-Id: Id8a123ab7539f1fadbd27e0cbeac79c2e4f09751 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	486059589b	all: gofmt -w -s (simplify) tests And it updates the build tag style on a couple files. Change-Id: I84478d822c8de3f84b56fa1176c99d2ea5083237 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	9310713bfb	all: fix some js/wasm compilation issues Change-Id: I05a3a4835e225a1e413ec3540a7c7e4a2d477084 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	a05086ef86	portlist: add debug knob to disable portlist collection For big servers. Per discussion with @crawshaw. Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	a3c5de641b	portlist: stop logging stray UDP ports These "weird" port lines show up in logs frequently. They're the result of uninteresting races, and they're not actionable. Remove the noise. Remove the isLoopbackAddr case to placate staticcheck. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	0eb6cc9321	portlist: cache field index position between runs, cut two more allocs (Linux) name old time/op new time/op delta ParsePorts-6 6.41ms ± 7% 3.15ms ± 2% -50.84% (p=0.000 n=9+9) name old alloc/op new alloc/op delta ParsePorts-6 408B ± 0% 216B ± 0% -47.06% (p=0.002 n=8+10) name old allocs/op new allocs/op delta ParsePorts-6 7.00 ± 0% 4.00 ± 0% -42.86% (p=0.000 n=10+10) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	61f201f33d	portlist: reuse bufio.Reader between files name old time/op new time/op delta ListPorts-6 1.18ms ± 5% 1.16ms ± 5% ~ (p=0.075 n=10+10) name old alloc/op new alloc/op delta ListPorts-6 27.2kB ± 0% 14.9kB ± 0% -45.14% (p=0.001 n=8+9) name old allocs/op new allocs/op delta ListPorts-6 90.0 ± 0% 84.0 ± 0% -6.67% (p=0.000 n=10+10) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5a9d977c78	portlist: reduce CPU parsing portlist Avoid splitting fields in the common case. Field splitting was 84% of the overall CPU. name old time/op new time/op delta ParsePorts-6 33.3ms ± 2% 6.3ms ± 4% -80.97% (p=0.000 n=9+10) name old alloc/op new alloc/op delta ParsePorts-6 520B ±79% 408B ± 0% -21.49% (p=0.046 n=10+8) name old allocs/op new allocs/op delta ParsePorts-6 7.00 ± 0% 7.00 ± 0% ~ (all equal) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	64e9ce8df1	portlist: reduce allocs on Linux Notably, it no longer allocates proportional to the number of open sockets on the machine. Any alloc reduction numbers are a little contrived with such a reduction but e.g. on a machine with 50,000 connections open: name old time/op new time/op delta ParsePorts-6 57.7ms ± 6% 32.8ms ± 3% -43.04% (p=0.000 n=9+10) name old alloc/op new alloc/op delta ParsePorts-6 24.0MB ± 0% 0.0MB ± 0% -100.00% (p=0.000 n=10+9) name old allocs/op new allocs/op delta ParsePorts-6 100k ± 0% 0k ± 0% -99.99% (p=0.000 n=10+10) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	bf8556ab86	portlist: fix build tag to build only on macOS, not macOS+iOS.	3 years ago
Josh Bleecher Snyder	6da6d47a83	all: simplify build tags involving iOS Prior to Go 1.16, iOS used GOOS=darwin, so we had to distinguish macOS from iOS during GOARCH. We now require Go 1.16 in our go.mod, so we can simplify. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	a5da4ed981	all: gofmt with Go 1.17 This adds "//go:build" lines and tidies up existing "// +build" lines. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
David Crawshaw	297b3d6fa4	staticcheck.conf: turn off noisy lint errors Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Josh Bleecher Snyder	bfd2b71926	portlist: suppress staticcheck error Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>	4 years ago
Brad Fitzpatrick	2df6372b67	portlist: de-dup services on same (proto, port) on both IPv4/IPv6 Fixes #1703 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	c0befee188	portlist: use windows OpenCurrentProcessToken, not GetCurrentProcessToken The latter only works on Windows 8+. Also add a TODO to get do this all more efficiently. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	e619296ece	portlist: filter out all of 127.0.0.0/8, not just 127.0.0.1/32 Per user private bug report. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	f325aa7e38	portlist: exclude services bound to IPv6 loopback address Fixes #1683 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	5c5acadb2a	portlist: unexport SameInodes method Signed-off-by: Brad Fitzpatrick <brad@danga.com>	4 years ago
Brad Fitzpatrick	b0af15ff5c	portlist: remove some old TODOs Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	63a9adeb6c	portlist: collect IPv6 listening sockets on linux. This is important because some of those v6 sockets are actually dual-stacked sockets, so this is our only chance of discovering some services. Fixes #1443. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	ad6edf5ecd	portlist: report a better process name for .Net on linux. Fixes #1440. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	9748c5414e	portlist: adjust build tags for iOS + Go 1.16 Updates #943 Updates #1370 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
moncho	e101d8396d	portlist, version: update build tags for Go 1.16, Apple M1 Build tags have been updated to build native Apple M1 binaries, existing build tags for ios have been changed from darwin,arm64 to ios,arm64. With this change, running go build cmd/tailscale{,d}/tailscale{,d}.go on an Apple machine with the new processor works and resulting binaries show the expected architecture, e.g. tailscale: Mach-O 64-bit executable arm64. Tested using go version go1.16beta1 darwin/arm64. Updates #943 Signed-off-by: moncho <50428+moncho@users.noreply.github.com>	4 years ago
Josh Bleecher Snyder	e8cd7bb66f	tstest: simplify goroutine leak tests Use tb.Cleanup to simplify both the API and the implementation. One behavior change: When the number of goroutines shrinks, don't log. I've never found these logs to be useful, and they frequently add noise. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Denton Gentry	0aed59b691	portlist: add a test for SameInodes Exercise all cases. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Denton Gentry	07e4009e15	portlist: fully exercise lessThan in tests All cases in lessThan are not reliably exercised by other tests. This shows up in code coverage metrics as lines in lessThan are alternately added and removed from coverage. Add a test case to systematically test all conditions. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Brad Fitzpatrick	8f76548fd9	tempfork/osexec: remove old fork of os/exec This package was a temporary fork of os/exec to fix an EINTR loop bug that was fixed upstream for Go 1.15 in `8c1db77a92` (https://go-review.googlesource.com/c/go/+/232862), in src/os/exec_unix.go: `8c1db77a92 (diff-72072cbd53a7240debad8aa506ff7ec795f9cfac7322e779f9bac29a4d0d0bd4)`	4 years ago
Brad Fitzpatrick	19b0cfe89e	all: prepare for GOOS=ios in Go 1.16 Work with either way for now on iOS (darwin/arm64 vs ios/arm64). In February when Go 1.16 comes out we'll have a universal binary for darwin/arm64 (macOS) and will drop support for Go 1.15 and its darwin/amd64 meaning iOS. (it'll mean macOS). Context: * https://tip.golang.org/doc/go1.16#darwin * https://github.com/golang/go/issues/38485 * https://github.com/golang/go/issues/42100	4 years ago
Brad Fitzpatrick	4a92fc9dc5	portlist: fix tests on Windows when not running as Administrator Updates #50	4 years ago
Josh Bleecher Snyder	a570c27577	portlist: reduce log spam on macOS Running tailscaled on my machine yields lots of entries like: weird: missing {tcp 6060} parsePortsNetstat is filtering out loopback addresses as uninteresting. Then addProcesses is surprised to discover these listening ports, which results in spurious logging. Teach addProcesses to also ignore loopback addresses. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	77cad13c70	portlist: avoid syscall audit violation logspam on Android If we don't have access, don't try, don't log, don't continue trying. Fixes #521	4 years ago
Brad Fitzpatrick	2ca2389c5f	portlist: set SysProcAttr.HideWindow on Windows Prevents annoying shell window flashes when running /server by hand.	4 years ago
Avery Pennarun	806de4ac94	portlist: fix "readdirent: no such file or directory" errors on Linux. This could happen when a process disappeared while we were reading its file descriptor list. I was able to replicate the problem by running this in another terminal: while :; do for i in $(seq 10); do /bin/true & done >&/dev/null; wait >&/dev/null; done And then running the portlist tests thousands of times. Fixes #339. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Brad Fitzpatrick	64f6104e63	portlist: reduce log spam/scariness for portlist in mac sandbox Fixes tailscale/corp#235	5 years ago
Wendi Yu	fde384b359	Fix macOS build staticcheck used to fail on macOS (and presumably windows) due to a variable declared in a common package that was only used by the Linux build, which would prevent `redo pr` from passing on Mac. Moved variable declaration from the common file to the Linux-specific one to resolve the compiler complaint. Signed-off-by: Wendi Yu <wendi.yu@yahoo.ca>	5 years ago
Brad Fitzpatrick	3b546dc29a	portlist: make two error paths have unique messages For debugging #339	5 years ago
David Anderson	9396024bd7	portlist: move code around to avoid unused function warnings.	5 years ago
Brad Fitzpatrick	2776209e49	portlist: don't depend on osexec package on ios, even if it's unused Continuation of `5bb14c07dc`. The earlier commit provided the space savings (as the linker could see through that osexec was unused at runtime), but it didn't clean up the dep graph (from go list -json or godepgraph). This removes the netstat.go file from the build too, just so the dep list looks more reasonable.	5 years ago
Brad Fitzpatrick	5bb14c07dc	portlist: don't depend on tempfork/osexec on iOS, saves 90KB This gives us 90KB more of memory on iOS, as it shrinks the NetworkExtension binary by 90KB. The netstat binary isn't available in the network extension anyway, so no point pulling in the osexec package which'll just fail to find netstat anyway.	5 years ago
Brad Fitzpatrick	ec0cd60fc3	portlist: fail earlier, more nicely on iOS	5 years ago
Brad Fitzpatrick	f8d67bb591	portlist: ignore ports bound to localhost Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	120273d7f6	portlist: document, clean up, fix an open fd spike, optimize a bit I noticed portlist when looking at some profiles and hadn't looked at the code much before. This is a first pass over it. It allocates a fair bit. More love remains, but this does a bit: name old time/op new time/op delta GetList-8 9.92ms ± 8% 9.64ms ±12% ~ (p=0.247 n=10+10) name old alloc/op new alloc/op delta GetList-8 931kB ± 0% 869kB ± 0% -6.70% (p=0.000 n=10+10) name old allocs/op new allocs/op delta GetList-8 4.59k ± 0% 3.69k ± 1% -19.71% (p=0.000 n=10+10) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
David Anderson	9ac1dda0d9	portlist: add a lint ignore for unused function. The function is indeed unused on linux, but we want it around so that unit tests exercise the netstat logic even on linux, even if it's only used on !linux. Signed-off-by: David Anderson <dave@natulte.net>	5 years ago
David Anderson	520e96afd1	portlist: simplify slice expression. Signed-off-by: David Anderson <dave@natulte.net>	5 years ago
Earl Lee	a8d8b8719a	Move Linux client & common packages into a public repo.	5 years ago

46 Commits (31094d557bdd592cdb08042535b2fc94889be7f3)