204 Commits (1410682fb68e650786940811784c835ddb786e5a)

Author	SHA1	Message	Date
Mihai Parparita	9cb332f0e2	sockstats: instrument networking code paths ... Uses the hooks added by tailscale/go#45 to instrument the reads and writes on the major code paths that do network I/O in the client. The convention is to use "<package>.<type>:<label>" as the annotation for the responsible code path. Enabled on iOS, macOS and Android only, since mobile platforms are the ones we're most interested in, and we are less sensitive to any throughput degradation due to the per-I/O callback overhead (macOS is also enabled for ease of testing during development). For now just exposed as counters on a /v0/sockstats PeerAPI endpoint. We also keep track of the current interface so that we can break out the stats by interface. Updates tailscale/corp#9230 Updates #3363 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	1 year ago
David Anderson	8b2ae47c31	version: unexport all vars, turn Short/Long into funcs ... The other formerly exported values aren't used outside the package, so just unexport them. Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
Brad Fitzpatrick	cf8dd7aa09	all: use Go 1.20's bytes.Clone ... Updates #7123 Updates #6257 (more to do in other repos) Change-Id: I073e2a6d81a5d7fbecc29caddb7e057ff65239d0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	b1248442c3	all: update to Go 1.20, use strings.CutPrefix/Suffix instead of our fork ... Updates #7123 Updates #5309 Change-Id: I90bcd87a2fb85a91834a0dd4be6e03db08438672 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Maisem Ali	5bba65e978	net/memnet: rename from net/nettest ... This is just #cleanup to resolve a TODO Also add a package doc. Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Will Norris	947c14793a	all: update tools that manage copyright headers ... Update all code generation tools, and those that check for license headers to use the new standard header. Also update copyright statement in LICENSE file. Fixes #6865 Signed-off-by: Will Norris <will@tailscale.com>	1 year ago
Will Norris	71029cea2d	all: update copyright and license headers ... This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>	1 year ago
Anton Tolchanov	6cc6c70d70	derp: prevent concurrent access to multiForwarder map ... Instead of iterating over the map to determine the preferred forwarder on every packet (which could happen concurrently with map mutations), store it separately in an atomic variable. Fixes #6445 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	1 year ago
Mihai Parparita	33520920c3	all: use strs.CutPrefix and strs.CutSuffix more ... Updates places where we use HasPrefix + TrimPrefix to use the combined function. Updates #5309 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Maisem Ali	1f4669a380	all: standardize on LocalAPI ... Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	da8def8e13	all: remove old +build tags ... The //go:build syntax was introduced in Go 1.17: https://go.dev/doc/go1.17#build-lines gofmt has kept the +build and go:build lines in sync since then, but enough time has passed. Time to remove them. Done with: perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build') Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	f4ff26f577	types/pad32: delete package ... Use Go 1.19's new 64-bit alignment ~hidden feature instead. Fixes #5356 Change-Id: Ifcbcb115875a7da01df3bc29e9e7feadce5bc956 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Mihai Parparita	9d04ffc782	net/wsconn: add back custom wrapper for turning a websocket.Conn into a net.Conn ... We removed it in #4806 in favor of the built-in functionality from the nhooyr.io/websocket package. However, it has an issue with deadlines that has not been fixed yet (see nhooyr/websocket#350). Temporarily go back to using a custom wrapper (using the fix from our fork) so that derpers will stop closing connections too aggressively. Updates #5921 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Andrew Dunham	64ea60aaa3	derp: add TCP RTT metric on Linux (#5949) ... Periodically poll the TCP RTT metric from all open TCP connections and update a (bucketed) histogram metric. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I6214902196b05bf7829c9d0ea501ce0e13d984cf	2 years ago
Mihai Parparita	b2855cfd86	derp/derphttp: fix nil pointer dereference when closing a netcheck client ... NewNetcheckClient only initializes a subset of fields of derphttp.Client, and the Close() call added by #5707 was result in a nil pointer dereference. Make Close() safe to call when using NewNetcheckClient() too. Fixes #5919 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Josh Soref	d4811f11a0	all: fix spelling mistakes ... Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>	2 years ago
Eng Zer Jun	f0347e841f	refactor: move from io/ioutil to io and os packages ... The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit replaces the existing io/ioutil functions with their new definitions in io and os packages. Reference: https://golang.org/doc/go1.16#ioutil Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>	2 years ago
Mihai Parparita	027111fb5a	derp: update DERP acronym expansion ... Makes the package description consistent with other documentation. Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Brad Fitzpatrick	74674b110d	envknob: support changing envknobs post-init ... Updates #5114 Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	a9f6cd41fd	all: use syncs.AtomicValue ... Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	4950fe60bd	syncs, all: move to using Go's new atomic types instead of ours ... Fixes #5185 Change-Id: I850dd532559af78c3895e2924f8237ccc328449d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	116f55ff66	all: gofmt for Go 1.19 ... Updates #5210 Change-Id: Ib02cd5e43d0a8db60c1f09755a8ac7b140b670be Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	a12aad6b47	all: convert more code to use net/netip directly ... perl -i -npe 's,netaddr.IPPrefixFrom,netip.PrefixFrom,' $(git grep -l -F netaddr.) perl -i -npe 's,netaddr.IPPortFrom,netip.AddrPortFrom,' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IPPrefix,netip.Prefix,g' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IPPort,netip.AddrPort,g' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IP\b,netip.Addr,g' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IPv6Raw\b,netip.AddrFrom16,g' $(git grep -l -F netaddr. ) goimports -w . Then delete some stuff from the net/netaddr shim package which is no longer neeed. Updates #5162 Change-Id: Ia7a86893fe21c7e3ee1ec823e8aba288d4566cd8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	6a396731eb	all: use various net/netip parse funcs directly ... Mechanical change with perl+goimports. Changed {Must,}Parse{IP,IPPrefix,IPPort} to their netip variants, then goimports -d . Finally, removed the net/netaddr wrappers, to prevent future use. Updates #5162 Change-Id: I59c0e38b5fbca5a935d701645789cddf3d7863ad Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	7eaf5e509f	net/netaddr: start migrating to net/netip via new netaddr adapter package ... Updates #5162 Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Charlotte Brandhorst-Satzkorn	4c0feba38e	derp: plumb '/derp' request context through (#5083) ... This change is required to implement tracing for derp. Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>	2 years ago
Brad Fitzpatrick	931f18b575	derp: add missing docs on clientInfo.Version ... It's not the Tailscale version. Change-Id: Icfbd5ff36300b2125b19cd2fa6caa22876965317 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Mihai Parparita	edc90ebc61	net/wsconn: remove homegrown wrapper for turning a websocket.Conn into a net.Conn ... The one from the nhooyr/websocket package seems to work equally well. Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Mihai Parparita	a9f32656f5	control/controlhttp: allow client and server to communicate over WebSockets ... We can't do Noise-over-HTTP in Wasm/JS (because we don't have bidirectional communication), but we should be able to do it over WebSockets. Reuses derp WebSocket support that allows us to turn a WebSocket connection into a net.Conn. Updates #3157 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
James Tucker	f9e86e64b7	*: use WireGuard where logged, printed or named ... Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
Tom DNetto	c8f4dfc8c0	derp/derphttp,net/netcheck: improve netcheck behavior under MITM proxies ... In cases where tailscale is operating behind a MITM proxy, we need to consider that a lot more of the internals of our HTTP requests are visible and may be used as part of authorization checks. As such, we need to 'behave' as closely as possible to ideal. - Some proxies do authorization or consistency checks based the on Host header or HTTP URI, instead of just the IP/hostname/SNI. As such, we need to construct a `*http.Request` with a valid URI everytime HTTP is going to be used on the wire, even if its over TLS. Aside from the singular instance in net/netcheck, I couldn't find anywhere else a http.Request was constructed incorrectly. - Some proxies may deny requests, typically by returning a 403 status code. We should not consider these requests as a valid latency check, so netcheck semantics have been updated to consider >299 status codes as a failed probe. Signed-off-by: Tom DNetto <tom@tailscale.com>	2 years ago
Maisem Ali	9f604f2bd3	derp: add (*Server).IsClientConnectedForTest func. (#4331) ... This allows tests to verfiy that a DERP connection was actually established. Related to #4326 Updates tailscale/corp#2579 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	18818763d1	derp: set Basic Constraints on metacert ... See https://github.com/golang/go/issues/51759#issuecomment-1071147836 Once we deploy this, tailscaled should work again for macOS users with Go 1.18. Updates golang/go#51759 Change-Id: I869b6ddc556a2de885e96ccf9f335dfc8f6f6a7e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Josh Bleecher Snyder	0868329936	all: use any instead of interface{} ... My favorite part of generics. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	2 years ago
Brad Fitzpatrick	730aa1c89c	derp/derphttp, wgengine/magicsock: prefer IPv6 to DERPs when IPv6 works ... Fixes #3838 Change-Id: Ie47a2a30c7e8e431512824798d2355006d72fb6a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	70d71ba1e7	cmd/derpprobe: check derper TLS certs too ... Change-Id: If8c48e012b294570ebbb1a46bacdc58fafbfbcc5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
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>	2 years ago
Brad Fitzpatrick	2aeb93003f	derp: add metrics to server got pings, sent pongs ... Updates #3652 Change-Id: I1d350bcaee39ea36b0c71912028624d18fb541b4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	2c94e3c4ad	wgengine/magicsock: don't unconditionally close DERP connections on rebind ... Only if the source address isn't on the currently active interface or a ping of the DERP server fails. Updates #3619 Change-Id: I6bf06503cff4d781f518b437c8744ac29577acc8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	63d9c7b9b3	derp: add Client.LocalAddr method ... So magicsock can later ask a DERP connection whether its source IP would've changed if it reconnected. Updates #3619 Change-Id: Ibc8810340c511d6786b60c78c1a61c09f5800e40 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	535b925d1b	derp/derphttp: add Client.Ping, SendPing methods ... Continuing work in 434af15a04, to make it possible for magicsock to probe whether a DERP server is still there. Updates #3619 Change-Id: I366a77c27e93b876734e64f445b85ef01eb590f2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	434af15a04	derp: support client->server ping (and server->client pong) ... In prep for a future change to have client ping derp connections when their state is questionable, rather than aggressively tearing them down and doing a heavy reconnect when their state is unknown. We already support ping/pong in the other direction (servers probing clients) so we already had the two frame types, but I'd never finished this direction. Updates #3619 Change-Id: I024b815d9db1bc57c20f82f80f95fb55fc9e2fcc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Josh Bleecher Snyder	758c37b83d	net/netns: thread logf into control functions ... So that darwin can log there without panicking during tests. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
David Anderson	84c3a09a8d	types/key: export constants for key size, not a method. ... Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	c1d009b9e9	ipn/ipnstate: use key.NodePublic instead of the generic key.Public. ... Updates #3206. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	1f06f77dcb	derp: remove package shadowing of types/key. ... Updates #3206 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	37c150aee1	derp: use new node key type. ... Update #3206 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	eebe7afad7	derp/derphttp: only log about a weird upgrade if any was specified ... Otherwise random browser requests to /derp cause log spam. Change-Id: I7bdf991d2106f0323868e651156c788a877a90d5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	505f844a43	cmd/derper, derp/derphttp: add websocket support ... Updates #3157 Change-Id: I337a919a3b350bc7bd9af567b49c4d5d6616abdd 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