tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	6a885dbc36	wgengine/magicsock: fix CI-only test warning of missing health tracker While looking at deflaking TestTwoDevicePing/ping_1.0.0.2_via_SendPacket, there were a bunch of distracting: WARNING: (non-fatal) nil health.Tracker (being strict in CI): ... This pacifies those so it's easier to work on actually deflaking the test. Updates #11762 Updates #11874 Change-Id: I08dcb44511d4996b68d5f1ce5a2619b555a2a773 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 week ago
Kristoffer Dalby	e0d711c478	{net/connstats,wgengine/magicsock}: fix packet counting in connstats connstats currently increments the packet counter whenever it is called to store a length of data, however when udp batch sending was introduced we pass the length for a series of packages, and it is only incremented ones, making it count wrongly if we are on a platform supporting udp batches. Updates tailscale/corp#22075 Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>	1 week ago
Kristoffer Dalby	40c991f6b8	wgengine: instrument with usermetrics Updates tailscale/corp#22075 Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>	1 week ago
Brad Fitzpatrick	6f694da912	wgengine/magicsock: avoid log spam from ReceiveFunc on shutdown The new logging in `2dd71e64ac` is spammy at shutdown: Receive func ReceiveIPv6 exiting with error: net.OpError, read udp [::]:38869: raw-read udp6 [::]:38869: use of closed network connection Receive func ReceiveIPv4 exiting with error: net.OpError, read udp 0.0.0.0:36123: raw-read udp4 0.0.0.0:36123: use of closed network connection Skip it if we're in the process of shutting down. Updates #10976 Change-Id: I4f6d1c68465557eb9ffe335d43d740e499ba9786 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 weeks ago
James Tucker	9eb59c72c1	wgengine/magicsock: fix check for EPERM on macOS Like Linux, macOS will reply to sendto(2) with EPERM if the firewall is currently blocking writes, though this behavior is like Linux undocumented. This is often caused by a faulting network extension or content filter from EDR software. Updates #11710 Updates #12891 Updates #13511 Signed-off-by: James Tucker <james@tailscale.com>	4 weeks ago
Adrian Dewhurst	2fdbcbdf86	wgengine/magicsock: only used cached results for GetLastNetcheckReport When querying for an exit node suggestion, occasionally it triggers a new report concurrently with an existing report in progress. Generally, there should always be a recent report or one in progress, so it is redundant to start one there, and it causes concurrency issues. Fixes #12643 Change-Id: I66ab9003972f673e5d4416f40eccd7c6676272a5 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	4 weeks ago
Kristoffer Dalby	0e0e53d3b3	util/usermetrics: make usermetrics non-global this commit changes usermetrics to be non-global, this is a building block for correct metrics if a go process runs multiple tsnets or in tests. Updates #13420 Updates tailscale/corp#22075 Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>	4 weeks ago
Jordan Whited	951884b077	net/netcheck,wgengine/magicsock: plumb OnlyTCP443 controlknob through netcheck (#13491 ) Updates tailscale/corp#17879 Signed-off-by: Jordan Whited <jordan@tailscale.com>	1 month ago
Jordan Whited	5f4a4c6744	wgengine/magicsock: fix sendUDPStd docs (#13490 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	1 month ago
Jordan Whited	4084c6186d	wgengine/magicsock: add side-effect-free function for netcheck UDP sends (#13487 ) Updates #13484 Updates tailscale/corp#17879 Signed-off-by: Jordan Whited <jordan@tailscale.com>	1 month ago
Andrew Dunham	40833a7524	wgengine/magicsock: disable raw disco by default; add envknob to enable Updates #13140 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ica85b2ac8ac7eab4ec5413b212f004aecc453279	1 month ago
Jordan Whited	afec2d41b4	wgengine/magicsock: remove redundant deadline from netcheck report call (#13395 ) netcheck.Client.GetReport() applies its own deadlines. This 2s deadline was causing GetReport() to never fall back to HTTPS/ICMP measurements as it was shorter than netcheck.stunProbeTimeout, leaving no time for fallbacks. Updates #13394 Updates #6187 Signed-off-by: Jordan Whited <jordan@tailscale.com>	1 month ago
Brad Fitzpatrick	3d401c11fa	all: use new Go 1.23 slices.Sorted more Updates #12912 Change-Id: If1294e5bc7b5d3cf0067535ae10db75e8b988d8b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
Andrew Dunham	1c972bc7cb	wgengine/magicsock: actually use AF_PACKET socket for raw disco Previously, despite what the commit said, we were using a raw IP socket that was not an AF_PACKET socket, and thus was subject to the host firewall rules. Switch to using a real AF_PACKET socket to actually get the functionality we want. Updates #13140 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: If657daeeda9ab8d967e75a4f049c66e2bca54b78	2 months ago
Brad Fitzpatrick	65fe0ba7b5	wgengine/magicsock: fix panic regression from cryptokey routing change Fixes #13332 Updates tailscale/corp#20732 Change-Id: I30f12746844bf77f5a664bf8e8d8ebf2511a2b27 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
tomholford	16bb541adb	wgengine/magicsock: replace deprecated poly1305 (#13184 ) Signed-off-by: tomholford <tomholford@users.noreply.github.com>	2 months ago
Jordan Whited	ccf091e4a6	wgengine/magicsock: don't upgrade to linuxBatchingConn on Android (#13161 ) In `a93dc6cdb1` tryUpgradeToBatchingConn() moved to build tag gated files, but the runtime.GOOS condition excluding Android was removed unintentionally from batching_conn_linux.go. Add it back. Updates tailscale/corp#22348 Signed-off-by: Jordan Whited <jordan@tailscale.com>	2 months ago
Andrew Dunham	e107977f75	wgengine/magicsock: disable SIO_UDP_NETRESET on Windows By default, Windows sets the SIO_UDP_CONNRESET and SIO_UDP_NETRESET options on created UDP sockets. These behaviours make the UDP socket ICMP-aware; when the system gets an ICMP message (e.g. an "ICMP Port Unreachable" message, in the case of SIO_UDP_CONNRESET), it will cause the underlying UDP socket to throw an error. Confusingly, this can occur even on reads, if the same UDP socket is used to write a packet that triggers this response. The Go runtime disabled the SIO_UDP_CONNRESET behavior in 3114bd6, but did not change SIO_UDP_NETRESET–probably because that socket option isn't documented particularly well. Various other networking code seem to disable this behaviour, such as the Godot game engine (godotengine/godot#22332) and the Eclipse TCF agent (link below). Others appear to work around this by ignoring the error returned (anacrolix/dht#16, among others). For now, until it's clear whether this ends up in the upstream Go implementation or not, let's also disable the SIO_UDP_NETRESET in a similar manner to SIO_UDP_CONNRESET. Eclipse TCF agent: https://gitlab.eclipse.org/eclipse/tcf/tcf.agent/-/blob/master/agent/tcf/framework/mdep.c Updates #10976 Updates golang/go#68614 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I70a2f19855f8dec1bfb82e63f6d14fc4a22ed5c3	2 months ago
Brad Fitzpatrick	2dd71e64ac	wgengine/magicsock: log when a ReceiveFunc fails Updates #10976 Change-Id: I86d30151a25c7d42ed36e273fb207873f4acfdb4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
Brad Fitzpatrick	a61825c7b8	cmd/tta, vnet: add host firewall, env var support, more tests In particular, tests showing that #3824 works. But that test doesn't actually work yet; it only gets a DERP connection. (why?) Updates #13038 Change-Id: Ie1fd1b6a38d4e90fae7e72a0b9a142a95f0b2e8f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
Jordan Whited	a93dc6cdb1	wgengine/magicsock: refactor batchingUDPConn to batchingConn interface (#13042 ) This commit adds a batchingConn interface, and renames batchingUDPConn to linuxBatchingConn. tryUpgradeToBatchingConn() may return a platform- specific implementation of batchingConn. So far only a Linux implementation of this interface exists, but this refactor is being done in anticipation of a Windows implementation. Updates tailscale/corp#21874 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Andrew Dunham	9939374c48	wgengine/magicsock: use cloud metadata to get public IPs Updates #12774 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I1661b6a2da7966ab667b075894837afd96f4742f	3 months ago
Irbe Krumina	57856fc0d5	ipn,wgengine/magicsock: allow setting static node endpoints via tailscaled configfile (#12882 ) wgengine/magicsock,ipn: allow setting static node endpoints via tailscaled config file. Adds a new StaticEndpoints field to tailscaled config that can be used to statically configure the endpoints that the node advertizes. This field will replace TS_DEBUG_PRETENDPOINTS env var that can be used to achieve the same. Additionally adds some functionality that ensures that endpoints are updated when configfile is reloaded. Also, refactor configuring/reconfiguring components to use the same functionality when configfile is parsed the first time or subsequent times (after reload). Previously a configfile reload did not result in resetting of prefs. Now it does- but does not yet tell the relevant components to consume the new prefs. This is to be done in a follow-up. Updates tailscale/tailscale#12578 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	3 months ago
Brad Fitzpatrick	808b4139ee	wgengine/magicsock: use wireguard-go/conn.PeerAwareEndpoint If we get an non-disco presumably-wireguard-encrypted UDP packet from an IP:port we don't recognize, rather than drop the packet, give it to WireGuard anyway and let WireGuard try to figure out who it's from and tell us. This uses the new hook added in https://github.com/tailscale/wireguard-go/pull/27 Updates tailscale/corp#20732 Change-Id: I5c61a40143810592f9efac6c12808a87f924ecf2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Lee Briggs	b546a6e758	wgengine/magicsock: allow a CSV list for pretendpoint Load Balancers often have more than one ingress IP, so allowing us to add multiple means we can offer multiple options. Updates #12578 Change-Id: I4aa49a698d457627d2f7011796d665c67d4c7952 Signed-off-by: Lee Briggs <lee@leebriggs.co.uk>	4 months ago
Brad Fitzpatrick	42dac7c5c2	wgengine/magicsock: add debug envknob for injecting an endpoint For testing. Lee wants to play with 'AWS Global Accelerator Custom Routing with Amazon Elastic Kubernetes Service'. If this works well enough, we can promote it. Updates #12578 Change-Id: I5018347ed46c15c9709910717d27305d0aedf8f4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	d2fef01206	control/controlknobs,tailcfg,wgengine/magicsock: remove DRPO shutoff switch The DERP Return Path Optimization (DRPO) is over four years old (and on by default for over two) and we haven't had problems, so time to remove the emergency shutoff code (controlknob) which we've never used. The controlknobs are only meant for new features, to mitigate risk. But we don't want to keep them forever, as they kinda pollute the code. Updates #150 Change-Id: If021bc8fd1b51006d8bddd1ffab639bb1abb0ad1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	9df107f4f0	wgengine/magicsock: use derp-region-as-magic-AddrPort hack in fewer places And fix up a bogus comment and flesh out some other comments. Updates #cleanup Change-Id: Ia60a1c04b0f5e44e8d9587914af819df8e8f442a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Andrew Dunham	8487fd2ec2	wgengine/magicsock: add more DERP home clientmetrics Updates tailscale/corp#18095 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I423adca2de0730092394bb5fd5796cd35557d352	4 months ago
Andrew Dunham	8161024176	wgengine/magicsock: always set home DERP if no control conn The logic we added in #11378 would prevent selecting a home DERP if we have no control connection. Updates tailscale/corp#18095 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I44bb6ac4393989444e4961b8cfa27dc149a33c6e	4 months ago
Maisem Ali	36e8e8cd64	wgengine/magicsock: use math/rands/v2 Updates #11058 Co-authored-by: James Tucker <james@tailscale.com> Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
Maisem Ali	4a8cb1d9f3	all: use math/rand/v2 more Updates #11058 Signed-off-by: Maisem Ali <maisem@tailscale.com>	5 months ago
James Tucker	9351eec3e1	net/netcheck: remove hairpin probes Palo Alto reported interpreting hairpin probes as LAND attacks, and the firewalls may be responding to this by shutting down otherwise in use NAT sessions prematurely. We don't currently make use of the outcome of the hairpin probes, and they contribute to other user confusion with e.g. the AirPort Extreme hairpin session workaround. We decided in response to remove the whole probe feature as a result. Updates #188 Updates tailscale/corp#19106 Updates tailscale/corp#19116 Signed-off-by: James Tucker <james@tailscale.com>	5 months ago
Brad Fitzpatrick	964282d34f	ipn,wgengine: remove vestigial Prefs.AllowSingleHosts It was requested by the first customer 4-5 years ago and only used for a brief moment of time. We later added netmap visibility trimming which removes the need for this. It's been hidden by the CLI for quite some time and never documented anywhere else. This keeps the CLI flag, though, out of caution. It just returns an error if it's set to anything but true (its default). Fixes #12058 Change-Id: I7514ba572e7b82519b04ed603ff9f3bdbaecfda7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
James Tucker	8d1249550a	net/netcheck,wgengine/magicsock: add potential workaround for Palo Alto DIPP misbehavior Palo Alto firewalls have a typically hard NAT, but also have a mode called Persistent DIPP that is supposed to provide consistent port mapping suitable for STUN resolution of public ports. Persistent DIPP works initially on most Palo Alto firewalls, but some models/software versions have a bug which this works around. The bug symptom presents as follows: - STUN sessions resolve a consistent public IP:port to start with - Much later netchecks report the same IP:Port for a subset of sessions, most often the users active DERP, and/or the port related to sustained traffic. - The broader set of DERPs in a full netcheck will now consistently observe a new IP:Port. - After this point of observation, new inbound connections will only succeed to the new IP:Port observed, and existing/old sessions will only work to the old binding. In this patch we now advertise the lowest latency global endpoint discovered as we always have, but in addition any global endpoints that are observed more than once in a single netcheck report. This should provide viable endpoints for potential connection establishment across a NAT with this behavior. Updates tailscale/corp#19106 Signed-off-by: James Tucker <james@tailscale.com>	5 months ago
Claire Wang	e070af7414	ipnlocal, magicsock: add more description to storing last suggested exit (#11998 ) node related functions Updates tailscale/corp#19681 Signed-off-by: Claire Wang <claire@tailscale.com>	6 months ago
Claire Wang	35872e86d2	ipnlocal, magicsock: store last suggested exit node id in local backend (#11959 ) Updates tailscale/corp#19681 Signed-off-by: Claire Wang <claire@tailscale.com>	6 months ago
Brad Fitzpatrick	b9adbe2002	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon In prep for most of the package funcs in net/interfaces to become methods in a long-lived netmon.Monitor that can cache things. (Many of the funcs are very heavy to call regularly, whereas the long-lived netmon.Monitor can subscribe to things from the OS and remember answers to questions it's asked regularly later) Updates tailscale/corp#10910 Updates tailscale/corp#18960 Updates #7967 Updates #3299 Change-Id: Ie4e8dedb70136af2d611b990b865a822cd1797e5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	7a62dddeac	net/netcheck, wgengine/magicsock: make netmon.Monitor required This has been a TODO for ages. Time to do it. The goal is to move more network state accessors to netmon.Monitor where they can be cheaper/cached. Updates tailscale/corp#10910 Updates tailscale/corp#18960 Updates #7967 Updates #3299 Change-Id: I60fc6508cd2d8d079260bda371fc08b6318bcaf1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	7f587d0321	health, wgengine/magicsock: remove last of health package globals Fixes #11874 Updates #4136 Change-Id: Ib70e6831d4c19c32509fe3d7eee4aa0e9f233564 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	6d69fc137f	ipn/{ipnlocal,localapi},wgengine{,/magicsock}: plumb health.Tracker Down to 25 health.Global users. After this remains controlclient & net/dns & wgengine/router. Updates #11874 Updates #4136 Change-Id: I6dd1856e3d9bf523bdd44b60fb3b8f7501d5dc0d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	723c775dbb	tsd, ipnlocal, etc: add tsd.System.HealthTracker, start some plumbing This adds a health.Tracker to tsd.System, accessible via a new tsd.System.HealthTracker method. In the future, that new method will return a tsd.System-specific HealthTracker, so multiple tsnet.Servers in the same process are isolated. For now, though, it just always returns the temporary health.Global value. That permits incremental plumbing over a number of changes. When the second to last health.Global reference is gone, then the tsd.System.HealthTracker implementation can return a private Tracker. The primary plumbing this does is adding it to LocalBackend and its dozen and change health calls. A few misc other callers are also plumbed. Subsequent changes will flesh out other parts of the tree (magicsock, controlclient, etc). Updates #11874 Updates #4136 Change-Id: Id51e73cfc8a39110425b6dc19d18b3975eac75ce Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	ebc552d2e0	health: add Tracker type, in prep for removing global variables This moves most of the health package global variables to a new `health.Tracker` type. But then rather than plumbing the Tracker in tsd.System everywhere, this only goes halfway and makes one new global Tracker (`health.Global`) that all the existing callers now use. A future change will eliminate that global. Updates #11874 Updates #4136 Change-Id: I6ee27e0b2e35f68cb38fecdb3b2dc4c3f2e09d68 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	03d5d1f0f9	wgengine/magicsock: disable portmapper in tunchan-faked tests Most of the magicsock tests fake the network, simulating packets going out and coming in. There's no reason to actually hit your router to do UPnP/NAT-PMP/PCP during in tests. But while debugging thousands of iterations of tests to deflake some things, I saw it slamming my router. This stops that. Updates #11762 Change-Id: I59b9f48f8f5aff1fa16b4935753d786342e87744 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	7c1d6e35a5	all: use Go 1.22 range-over-int Updates #11058 Change-Id: I35e7ef9b90e83cac04ca93fd964ad00ed5b48430 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	0fba9e7570	cmd/tailscale/cli: prevent concurrent Start calls in 'up' Seems to deflake tstest/integration tests. I can't reproduce it anymore on one of my VMs that was consistently flaking after a dozen runs before. Now I can run hundreds of times. Updates #11649 Fixes #7036 Change-Id: I2f7d4ae97500d507bdd78af9e92cd1242e8e44b8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Claire Wang	9171b217ba	cmd/tailscale, ipn/ipnlocal: add suggest exit node CLI option (#11407 ) Updates tailscale/corp#17516 Signed-off-by: Claire Wang <claire@tailscale.com>	6 months ago
Charlotte Brandhorst-Satzkorn	449f46c207	wgengine/magicsock: rebind/restun if a syscall.EPERM error is returned (#11711 ) We have seen in macOS client logs that the "operation not permitted", a syscall.EPERM error, is being returned when traffic is attempted to be sent. This may be caused by security software on the client. This change will perform a rebind and restun if we receive a syscall.EPERM error on clients running darwin. Rebinds will only be called if we haven't performed one specifically for an EPERM error in the past 5 seconds. Updates #11710 Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>	6 months ago
James Tucker	a2eb1c22b0	wgengine/magicsock: allow disco communication without known endpoints Just because we don't have known endpoints for a peer does not mean that the peer should become unreachable. If we know the peers key, it should be able to call us, then we can talk back via whatever path it called us on. First step - don't drop the packet in this context. Updates tailscale/corp#19106 Signed-off-by: James Tucker <james@tailscale.com>	7 months ago
James Tucker	6e334e64a1	net/netcheck,wgengine/magicsock: align DERP frame receive time heuristics The netcheck package and the magicksock package coordinate via the health package, but both sides have time based heuristics through indirect dependencies. These were misaligned, so the implemented heuristic aimed at reducing DERP moves while there is active traffic were non-operational about 3/5ths of the time. It is problematic to setup a good test for this integration presently, so instead I added comment breadcrumbs along with the initial fix. Updates #8603 Signed-off-by: James Tucker <james@tailscale.com>	7 months ago

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