tailscale

Commit Graph

Author	SHA1	Message	Date
Josh Bleecher Snyder	94fb42d4b2	all: use testingutil.MinAllocsPerRun There are a few remaining uses of testing.AllocsPerRun: Two in which we only log the number of allocations, and one in which dynamically calculate the allocations target based on a different AllocsPerRun run. This also allows us to tighten the "no allocs" test in wgengine/filter. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Denton Gentry	5302e4be96	net/portmapper: only print PCP/PMP if VerboseLogs Make UPnP, NAT-PMP, and PCP packet reception logs be [v1] so they will never appear on stdout and instead only go to logtail. ``` $ tailscale netcheck 2021/10/15 22:50:31 portmap: Got PMP response; IP: w.x.y.z, epoch: 1012707 2021/10/15 22:50:31 portmap: Got PCP response: epoch: 1012707 Report: * UDP: true * IPv4: yes, w.x.y.z:1511 * IPv6: no * MappingVariesByDestIP: true * HairPinning: false * PortMapping: NAT-PMP, PCP * Nearest DERP: San Francisco * DERP latency: - sfo: 5.9ms (San Francisco) - sea: 24ms (Seattle) - dfw: 45ms (Dallas) - ord: 53.7ms (Chicago) - nyc: 74.1ms (New York City) - tok: 111.1ms (Tokyo) - lhr: 139.4ms (London) - syd: 152.7ms (Sydney) - fra: 153.1ms (Frankfurt) - sin: 182.1ms (Singapore) - sao: 190.1ms (S_o Paulo) - blr: 218.6ms (Bangalore) ``` Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
David Anderson	060ba86baa	net/portmapper: ignore IGD SSDP responses from !defaultgw Now that we multicast the SSDP query, we can get IGD offers from devices other than the current device's default gateway. We don't want to accidentally bind ourselves to those. Updates #3197 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	4a65b07e34	net/portmapper: also send UPnP SSDP query to the SSDP multicast address. Fixes #3197 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	b0b0a80318	net/netcheck: implement netcheck for js/wasm clients And the derper change to add a CORS endpoint for latency measurement. And a little magicsock change to cut down some log spam on js/wasm. Updates #3157 Change-Id: I5fd9e6f5098c815116ddc8ac90cbcd0602098a48 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Denton Gentry	139a6c4c9c	net/dns: detect when resolvconf points to systemd-resolved. There are /etc/resolv.conf files out there where resolvconf wrote the file but pointed to systemd-resolved as the nameserver. We're better off handling those as systemd-resolved. > # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) > # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN > # 127.0.0.53 is the systemd-resolved stub resolver. > # run "systemd-resolve --status" to see details about the actual nameservers. Fixes https://github.com/tailscale/tailscale/issues/3026 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
David Anderson	a320d70614	net/dns: fall back to copy+delete/truncate if moving to/from /etc/resolv.conf fails. In some containers, /etc/resolv.conf is a bind-mount from outside the container. This prevents renaming to or from /etc/resolv.conf, because it's on a different filesystem from linux's perspective. It also prevents removing /etc/resolv.conf, because doing so would break the bind-mount. If we find ourselves within this environment, fall back to using copy+delete when renaming to /etc/resolv.conf, and copy+truncate when renaming from /etc/resolv.conf. Fixes #3000 Co-authored-by: Denton Gentry <dgentry@tailscale.com> Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	04d24d3a38	net/dns: move directManager function below directManager's definition. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	422ea4980f	net/dns: remove a tiny wrapper function that isn't contributing anything. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	a8e2cceefd	net/netcheck: hard-code preferred DERP region 900 on js/wasm for now See TODO in code. Updates #3157 Change-Id: I3a14dd2cf51d3c21336bb357af5abc362a079ff4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	9b101bd6af	net/tstun: don't compile the code New constructor on js/wasm Updates #3157 Change-Id: I81603edf3e69e6f1517b0074eef6b648f2981c50 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maxim Merzhanov	9f954628e5	net/dns: ignore UnknownMethod error in SetLinkDefaultRoute for resolved manager Signed-off-by: Maxim Merzhanov <maksimmerzh@gmail.com>	3 years ago
Brad Fitzpatrick	8efc306e4f	net/interfaces: assume the network's up on js/wasm Updates #3157 Change-Id: If4acd33598ad5e8ef7fb5960964c9ac32bc8f68b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Joe Tsai	9af27ba829	cmd/cloner: mangle "go:generate" in cloner.go The "go generate" command blindly looks for "//go:generate" anywhere in the file regardless of whether it is truly a comment. Prevent this false positive in cloner.go by mangling the string to look less like "//go:generate". Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Maisem Ali	7817ab6b20	net/dns/resolver: set maxDoHInFlight to 1000 on iOS 15+. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	4a3e2842d9	net/interfaces: add List, GetList And start moving funcs to methods on List. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	77696579f5	net/dns/resolver: drop dropping log Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	676fb458c3	net/dns/resolver: make hasRDNSBonjourPrefix match shorter queries too Fixes tailscale/corp#2886 Updates tailscale/corp#2820 Updates #2442 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
nicksherron	f01ff18b6f	all: fix spelling mistakes Signed-off-by: nicksherron <nsherron90@gmail.com>	3 years ago
Aaron Klotz	1991a1ac6a	net/tstun: update tun_windows for wintun 0.14 API revisions, update wireguard-go dependency to 82d2aa87aa623cb5143a41c3345da4fb875ad85d Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
Smitty	b382161fe5	tsdns: don't forward transient DNS errors When a DNS server claims to be unable or unwilling to handle a request, instead of passing that refusal along to the client, just treat it as any other error trying to connect to the DNS server. This prevents DNS requests from failing based on if a server can respond with a transient error before another server is able to give an actual response. DNS requests only failing sometimes is really hard to find the cause of (#1033). Signed-off-by: Smitty <me@smitop.com>	3 years ago
Denton Gentry	5d6198adee	netcheck: don't log ErrGatewayRange "skipping portmap; gateway range likely lacks support" is really spammy on cloud systems, and not very useful in debugging. Fixes https://github.com/tailscale/tailscale/issues/3034 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Denton Gentry	d883747d8b	net/dns/resolver: don't forward DNS-SD on all platforms We added the initial handling only for macOS and iOS. With 1.16.0 now released, suppress forwarding DNS-SD on all platforms to test it through the 1.17.x cycle. Updates #2442 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Brad Fitzpatrick	297d1b7cb6	net/dns/resolver: don't forward DNS-SD queries Updates #2442 Fixes tailscale/corp#2820 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	47044f3af7	net/dns/resolver: fix log prefix The passed in logf already has a "dns: " prefix so they were doubled up.	3 years ago
Brad Fitzpatrick	7634af5c6f	all: gofmt Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Avery Pennarun	0d4a0bf60e	magicsock: if STUN failed to send before, rebind before STUNning again. On iOS (and possibly other platforms), sometimes our UDP socket would get stuck in a state where it was bound to an invalid interface (or no interface) after a network reconfiguration. We can detect this by actually checking the error codes from sending our STUN packets. If we completely fail to send any STUN packets, we know something is very broken. So on the next STUN attempt, let's rebind the UDP socket to try to correct any problems. This fixes a problem where iOS would sometimes get stuck using DERP instead of direct connections until the backend was restarted. Fixes #2994 Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	3 years ago
Brad Fitzpatrick	2501a694cb	net/interfaces: add RegisterInterfaceGetter for Android Updates #2293 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	22a1a5d7cf	ipn/ipnlocal: for IPv6-only nodes, publish IPv6 MagicDNS records of peers See https://github.com/tailscale/tailscale/issues/2970#issuecomment-931885268 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	09c2462ae5	net/tlsdial: add forgotten test file for go mod tidy I forgot to include this file in the earlier `7cf8ec8108` commit. This exists purely to keep "go mod tidy" happy. Updates #1609 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7cf8ec8108	net/tlsdial: bake in LetsEncrypt's ISRG Root X1 root We still try the host's x509 roots first, but if that fails (like if the host is old), we fall back to using LetsEncrypt's root and retrying with that. tlsdial was used in the three main places: logs, control, DERP. But it was missing in dnsfallback. So added it there too, so we can run fine now on a machine with no DNS config and no root CAs configured. Also, move SSLKEYLOGFILE support out of DERP. tlsdial is the logical place for that support. Fixes #1609 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Filippo Valsorda	d7ce2be5f4	net/dns/resolver: add unsecured Quad9 resolvers DNSSEC is an availability issue, as recently demonstrated by the Slack issue, with limited security advantage. DoH on the other hand is a critical security upgrade. This change adds DoH support for the non-DNSSEC endpoints of Quad9. https://www.quad9.net/service/service-addresses-and-features#unsec Signed-off-by: Filippo Valsorda <hi@filippo.io>	3 years ago
Brad Fitzpatrick	080381c79f	net/tstun: block looped disco traffic, take 17 It was in the wrong filter direction before, per CPU profiles we now have. Updates #1526 (maybe fixes? time will tell) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	173bbaa1a1	all: disable TCP keep-alives on iOS/Android Updates #2442 Updates tailscale/corp#2750 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	4cf63b8df0	net/dnsfallback: update static map for new derp11. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Denton Gentry	93c2882a2f	wgengine: flush DNS cache after major link change. Windows has a public dns.Flush used in router_windows.go. However that won't work for platforms like Linux, where we need a different flush mechanism for resolved versus other implementations. We're instead adding a FlushCaches method to the dns Manager, which can be made to work on all platforms as needed. Fixes https://github.com/tailscale/tailscale/issues/2132 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Maxim Merzhanov	d43fcd2f02	net/dns: fix error wrapping for SetLinkDefaultRoute in resolved Signed-off-by: Maxim Merzhanov <maksimmerzh@gmail.com>	3 years ago
Brad Fitzpatrick	dabeda21e0	net/tstun: block looped disco traffic Updates #1526 (maybe fixes? time will tell) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	4f648e6fcc	cmd/tailscaled: disable netns earlier in userspace-networking mode The earlier `382b349c54` was too late, as engine creation itself needed to listen on things. Fixes #2827 Updates #2822 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	382b349c54	cmd/tailscaled: disable netns in userspace-networking mode Updates #2827 Updates #2822 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	12dc7c2df8	net/interfaces: remove stray C header file I meant to delete it as part of `974be2ec5c` when the darwin code was ported from C to Go. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	640134421e	all: update tests to use tstest.MemLogger And give MemLogger a mutex, as one caller had, which does match the logf contract better. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	48bdffd395	net/portmapper: remove GITHUB_ACTIONS check It's now redundant. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7fe6ecf165	ipn/ipnlocal: add MagicDNS records for IPv6-only nodes Updates #2268 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	9502b515f1	net/dns: replace resolver IPs with type for DoH We currently plumb full URLs for DNS resolvers from the control server down to the client. But when we pass the values into the net/dns package, we throw away any URL that isn't a bare IP. This commit continues the plumbing, and gets the URL all the way to the built in forwarder. (It stops before plumbing URLs into the OS configurations that can handle them.) For #2596 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	5a58fd8933	net/dnsfallback: go generate, pick up new DERPs Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	69c897a763	net/dnsfallback: run go generate to pick up new derp9s. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	bb6fdfb243	net/dns: fix the build on freebsd (missing default case in switch) Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	b3b1c06b3a	net/dns: only restart systemd-resolved if we changed /etc/resolv.conf. Reported on IRC: in an edge case, you can end up with a directManager DNS manager and --accept-dns=false, in which case we should do nothing, but actually end up restarting resolved whenever the netmap changes, even though the user told us to not manage DNS. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	10547d989d	net/dns: exhaustively test DNS selection paths for linux. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago

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447 Commits (1f06f77dcb72c17f61efaba780f4425d3ff8e022)