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| author | Andrea Gottardo <andrea@gottardo.me> | 2024-09-19 15:52:31 -0700 |
|---|---|---|
| committer | Andrea Gottardo <andrea@gottardo.me> | 2024-09-19 15:52:31 -0700 |
| commit | 025ceed7354a527594c3c422ab4b9e1558326323 (patch) | |
| tree | a04166e9b57b05c760e71703a42fe560736d3fa4 /client | |
| parent | 7c02dcf93ad9c29d3732e189a4b445bd3fde1bf7 (diff) | |
| download | tailscale-angott/dns-cli-stream.tar.xz tailscale-angott/dns-cli-stream.zip | |
cli: implement `tailscale dns stream`angott/dns-cli-stream
Updates tailscale/tailscale#13326
This PR adds another subcommand to `tailscale dns`, to stream queries and answers returned by the DNS forwarder as they are handled.
Useful for debugging purposes, and is equivalent to setting the `TS_DEBUG_DNS_FORWARD_SEND` envknob and filtering the logs for relevant entries. This also adds a new envknob, `TS_DEBUG_DNS_INCLUDE_NAMES`, which includes the actual hostnames in the log lines (with a huge privacy warning!). This makes it easier to diagnose issues with DNS resolution.
Diffstat (limited to 'client')
| -rw-r--r-- | client/tailscale/localclient.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/client/tailscale/localclient.go b/client/tailscale/localclient.go index df51dc1ca..73f27d50f 100644 --- a/client/tailscale/localclient.go +++ b/client/tailscale/localclient.go @@ -1470,6 +1470,13 @@ func (lc *LocalClient) DebugDERPRegion(ctx context.Context, regionIDOrCode strin return decodeJSON[*ipnstate.DebugDERPRegionReport](body) } +// DebugEnvknob sets a envknob for debugging purposes. +func (lc *LocalClient) DebugEnvknob(ctx context.Context, key, value string) error { + v := url.Values{"key": {key}, "value": {value}} + _, err := lc.send(ctx, "POST", "/localapi/v0/debug-envknob?"+v.Encode(), 200, nil) + return err +} + // DebugPacketFilterRules returns the packet filter rules for the current device. func (lc *LocalClient) DebugPacketFilterRules(ctx context.Context) ([]tailcfg.FilterRule, error) { body, err := lc.send(ctx, "POST", "/localapi/v0/debug-packet-filter-rules", 200, nil) |