Commit Graph

90 Commits (39bbb86b09263730de091ba5a910d7bdd2dccbce)

Author SHA1 Message Date
Brad Fitzpatrick 1036f51a56 net/tshttpproxy: aggressively rate-limit error logs in Transport.Proxy path
Otherwise log upload HTTP requests generate proxy errrors which
generate logs which generate HTTP requests which generate proxy
errors which generate more logs, etc.

Fixes #879
4 years ago
Brad Fitzpatrick 7ac91c15bd net/netcheck: fix tests on Windows
Updates #50
4 years ago
Brad Fitzpatrick fd2a30cd32 wgengine/magicsock: make test pass on Windows and without firewall dialog box
Updates #50
4 years ago
David Anderson 5c35c35e7f tsaddr: add helpers for the Tailscale IPv6 range, and 4to6 conversion.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 551e1e99e9 net/netns: don't bind to device for localhost connections
Fixes derphttp test failures on Windows (for #50).
4 years ago
Alex Brainman f2ce64f0c6 wgengine/router: unfork winipcfg-go package, use upstream
Use golang.zx2c4.com/wireguard/windows/tunnel/winipcfg
instead of github.com/tailscale/winipcfg-go package.

Updates #760

Signed-off-by: Alex Brainman <alex.brainman@gmail.com>
4 years ago
Brad Fitzpatrick 6ee219a25d ipn, wgengine, magicsock, tsdns: be quieter and less aggressive when offline
If no interfaces are up, calm down and stop spamming so much. It was
noticed as especially bad on Windows, but probably was bad
everywhere. I just have the best network conditions testing on a
Windows VM.

Updates #604
4 years ago
Brad Fitzpatrick 587bdc4280 ipn, wgengine: disable subnet routes if network has PAC configuration
Not configurable yet.

Updates tailscale/corp#653

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick ed5d5f920f net/interfaces: add interfaces.State.String method 4 years ago
Brad Fitzpatrick cab3eb995f net/interfaces: quiet PAC detection logging in no-PAC case, add benchmark 4 years ago
Brad Fitzpatrick 8051ecff55 net/interfaces: add State.PAC field, populate it on Windows
Not used for anything yet (except logging), but populate the current
proxy autoconfig PAC URL in Interfaces.State.

A future change will do things based on it.
4 years ago
Brad Fitzpatrick 8893c2ee78 net/interfaces, net/netns: move default route interface code to interfaces
To populate interfaces.State.DefaultRouteInterface.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick fda9dc8815 net/netns: document Windows socket binding a bit more
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 963b927d5b net/tshttpproxy: appease staticcheck 4 years ago
Brad Fitzpatrick 5bcac4eaac net/tshttpproxy: add GetProxyForURL negative cache
Otherwise when PAC server is down, we log, and each log entry is a new
HTTP request (from logtail) and a new GetProxyForURL call, which again
logs, non-stop. This is also nicer to the WinHTTP service.

Then also hook up link change notifications to the cache to reset it
if there's a chance the network might work sooner.
4 years ago
David Anderson 8f5b52e571 net/netns: add windows support.
Also remove rebinding logic from the windows router. Magicsock will
instead rebind based on link change signals.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 40e12c17ec net/netcheck: remove mistaken double Mutex.Unlock in error path
Thanks to @dotaheor for noticing.

Fixes #751
4 years ago
Brad Fitzpatrick f65eb4e5c1 net/netstat: start of new netstat package, with Windows for now
This will be used in a future change to do localhost connection
authentication. This lets us quickly map a localhost TCP connection to
a PID. (A future change will then map a pid to a user)

TODO: pull portlist's netstat code into this package. Then portlist
will be fast on Windows without requiring shelling out to netstat.exe.
4 years ago
Brad Fitzpatrick 9c25968b63 net/tshttpproxy: fix typo in Windows code added at least second
I ran tests & vet & staticcheck, but for Linux, not Windows.
(#728 would be nice)
4 years ago
Brad Fitzpatrick b026a638c7 net/tshttpproxy: if winhttp.GetProxyForURL blocks too long, use previous value
We currently have a chickend-and-egg situation in some environments
where we can set up routes that WinHTTP's WPAD/PAC resolution service
needs to download the PAC file to evaluate GetProxyForURL, but the PAC
file is behind a route for which we need to call GetProxyForURL to
e.g. dial a DERP server.

As a short-term fix, just assume that the most recently returned proxy
is good enough for such situations.
4 years ago
Brad Fitzpatrick 74ee374667 net/tshttpproxy: add more winhttp logging
Notably around duration of calls.
4 years ago
Brad Fitzpatrick 1e0be5a458 tshttp, derphttp: send Proxy-Authorization, not Authorization, to proxies
Whoops. But weirdly, sending Authorization sometimes worked?
4 years ago
Brad Fitzpatrick 2bac125cad net/tshttpproxy: move the TS_DEBUG_FAKE_PROXY_AUTH knob up a level 4 years ago
Brad Fitzpatrick 28f9cd06f5 tshttpproxy, controlclient, derphttp, logpolicy: send Negotiate auth to proxies
For Windows only, and only when built with Tailscale's Go tree.

Updates tailscale/corp#583
4 years ago
Brad Fitzpatrick f915ab6552 net/tshttpproxy: add start of Kerberos Negotiate auth to proxies on Windows
For now only used by a new cmd/tailscale debug --get-url
subcommand. Not yet wired up to the places making HTTP requests.

Updates tailscale/corp#583
4 years ago
renthraysk 10cad39abd
net/stun: Fix STUN attribute padding (#710)
net/stun: fix STUN attribute padding

Signed-off-by: RenThraysk <renthraysk@gmail.com>
4 years ago
Brad Fitzpatrick 9be1917c5b net/tshttpproxy: discard secondary Windows proxies for now 4 years ago
Brad Fitzpatrick 1e562886f5 net/netcheck: in verbose mode, probe all regions
So 'tailscale netcheck --verbose' shows all regions' latencies.
4 years ago
Brad Fitzpatrick c5eb57f4d6 net/tshttpproxy: new package, support WPAD/PAC proxies on Windows
Updates tailscale/corp#553

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick dbb4c246fa wgengine/monitor: add Windows linkchange monitor
Updates tailscale/corp#553

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick b97aac1718 net/interfaces: include DefaultRouteInterface in interfaces.State
And log it in wgengine on change. Changing bug in #643.

Updates #643
4 years ago
Josh Bleecher Snyder a9b1e3f9e8 net/interfaces: remove old debug old
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Brad Fitzpatrick 25b021388b net/netns, net/interfaces: move defaultRouteInterface, add Android fallback
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Josh Bleecher Snyder a16a793605 net/interfaces: use syscalls to find private gateway IP address
iOS doesn't let you run subprocesses,
which means we can't use netstat to get routing information.
Instead, use syscalls and grub around in the results.
We keep the old netstat version around,
both for use in non-cgo builds,
and for use testing the syscall-based version.

Note that iOS doesn't ship route.h,
so we include a copy here from the macOS 10.15 SDK
(which is itself unchanged from the 10.14 SDK).

I have tested manually that this yields the correct
gateway IP address on my own macOS and iOS devices.
More coverage would be most welcome.

Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>
4 years ago
Dmytro Shynkevych 28e52a0492
all: dns refactor, add Proxied and PerDomain flags from control (#615)
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
4 years ago
Brad Fitzpatrick c253d4f948 net/interfaces: don't try to fork on iOS in likelyHomeRouterIPDarwin
No subprocesses allowed on iOS. Will need to do this differently later.
4 years ago
Brad Fitzpatrick 33a748bec1 net/interfaces: fix likelyHomeRouterIP on Android 4 years ago
David Anderson a2b4ad839b net/netcheck: lower the hairpin check timeout to 100ms.
This single check is the long pole for netcheck, and significantly slows down magicsock
tests.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 25288567ec net/netcheck: centralize all clock values in one place.
This makes it easier to see how long a netcheck might take, and what
the slow bits might be.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson d60917c0f1 wgengine/router: switch packet marks to avoid conflict with Weave Net.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Brad Fitzpatrick 10ac066013 all: fix vet warnings 4 years ago
Brad Fitzpatrick 723b9eecb0 net/interfaces: set SysProcAttr.HideWindow to prevent cmd.exe flash on Windows 4 years ago
Brad Fitzpatrick 6c74065053 wgengine/magicsock, tstest/natlab: start hooking up natlab to magicsock
Also adds ephemeral port support to natlab.

Work in progress.

Pairing with @danderson.
4 years ago
Brad Fitzpatrick ecf5d69c7c net/netcheck: add missing comment asked for in earlier code review 4 years ago
Brad Fitzpatrick 742b8b44a8 net/tsaddr: new package to hold Tailscale-specific IPs/ranges
And update existing callers with (near) duplicated cases.
4 years ago
Brad Fitzpatrick 5c6d8e3053 netcheck, tailcfg, interfaces, magicsock: survey UPnP, NAT-PMP, PCP
Don't do anything with UPnP, NAT-PMP, PCP yet, but see how common they
are in the wild.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick 32156330a8 net/interfaces: add func LikelyHomeRouterIP
For discovering where we might direct NAT-PMP/PCP/UPnP queries at in
the future.
4 years ago
Brad Fitzpatrick cf74e9039e net/netcheck: add an informative payload in the netcheck UDP helper packets
Per comment from @normanr:
0a5ab533c1 (r40401954)

Updates #188
4 years ago
Brad Fitzpatrick 0a5ab533c1 net/netcheck: send dummy packet out to help airport extreme in hairpin check
At least the Apple Airport Extreme doesn't allow hairpin
sends from a private socket until it's seen traffic from
that src IP:port to something else out on the internet.

See https://github.com/tailscale/tailscale/issues/188#issuecomment-600728643

And it seems that even sending to a likely-filtered RFC 5737
documentation-only IPv4 range is enough to set up the mapping.
So do that for now. In the future we might want to classify networks
that do and don't require this separately. But for now help it.

I've confirmed that this is enough to fix the hairpin check on Avery's
home network, even using the RFC 5737 IP.

Fixes #188
4 years ago
Brad Fitzpatrick 2d6e84e19e net/netcheck, wgengine/magicsock: replace more UDPAddr with netaddr.IPPort 4 years ago