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tailscale/net/dns
Tom 24bdcbe5c7
net/dns, net/dns/resolver, wgengine: refactor DNS request path (#4364)
* net/dns, net/dns/resolver, wgengine: refactor DNS request path

Previously, method calls into the DNS manager/resolver types handled DNS
requests rather than DNS packets. This is fine for UDP as one packet
corresponds to one request or response, however will not suit an
implementation that supports DNS over TCP.

To support PRs implementing this in the future, wgengine delegates
all handling/construction of packets to the magic DNS endpoint, to
the DNS types themselves. Handling IP packets at this level enables
future support for both UDP and TCP.

Signed-off-by: Tom DNetto <tom@tailscale.com>
3 years ago
..
resolvconffile all: use strings.Cut even more 3 years ago
resolver net/dns, net/dns/resolver, wgengine: refactor DNS request path (#4364) 3 years ago
config.go ipnlocal, net/{dns,tsaddr,tstun}, wgengine: support MagicDNS on IPv6 3 years ago
debian_resolvconf.go all: gofmt with Go 1.17 3 years ago
direct.go net/dns: ignore permission errors on Synology DSM7 for now 3 years ago
direct_test.go net/dns: require space after nameserver/search parsing resolv.conf 3 years ago
flush_default.go wgengine: flush DNS cache after major link change. 3 years ago
flush_windows.go wgengine: flush DNS cache after major link change. 3 years ago
ini.go all: gofmt with Go 1.17 3 years ago
ini_test.go all: gofmt -w -s (simplify) tests 3 years ago
manager.go net/dns, net/dns/resolver, wgengine: refactor DNS request path (#4364) 3 years ago
manager_default.go all: gofmt with Go 1.17 3 years ago
manager_freebsd.go net/dns: fall back to copy+delete/truncate if moving to/from /etc/resolv.conf fails. 3 years ago
manager_linux.go net/dns: add health check for particular broken-ish Linux DNS config 3 years ago
manager_linux_test.go all: use any instead of interface{} 3 years ago
manager_openbsd.go net/dns: teach OpenBSD's manager to talk to resolvd(8). (#2789) 3 years ago
manager_test.go net/tsdial: move more weirdo dialing into new tsdial package, plumb 3 years ago
manager_windows.go envknob: add new package for all the strconv.ParseBool(os.Getenv(..)) 3 years ago
nm.go all: use any instead of interface{} 3 years ago
noop.go net/dns: return error from NewOSManager, use it to initialize NM. 4 years ago
openresolv.go all: gofmt with Go 1.17 3 years ago
osconfig.go net/dns: make debian_resolvconf correctly clear DNS configs. 4 years ago
registry_windows.go wgengine/router/dns: move to net/dns. 4 years ago
resolvconf-workaround.sh net/dns: also include 'tail' and 'base' files when fixing up resolv.conf. 4 years ago
resolvconf.go net/dns: exhaustively test DNS selection paths for linux. 3 years ago
resolvd.go net/dns/resolvconffile: unify three /etc/resolv.conf parsers into new package 3 years ago
resolved.go all: use any instead of interface{} 3 years ago
utf.go net/dns: detect and decode UTF-16 from wsl.exe earlier. 3 years ago
utf_test.go net/dns: detect and decode UTF-16 from wsl.exe earlier. 3 years ago
wsl_windows.go net/dns: fix checking for wrapped error when attempting to read wsl.conf for Windows WSL2 3 years ago