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health, control/controlclient, wgengine: report when router unhealthy

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Updates tailscale/corp#1338

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-02-18 08:58:13 -08:00
committed by Brad Fitzpatrick
parent 2d96215d97
commit fd8e070d01
6 changed files with 98 additions and 2 deletions
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10
control/controlclient/direct.go
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@@ -33,6 +33,7 @@ import (
"golang.org/x/crypto/nacl/box"
"golang.org/x/oauth2"
"inet.af/netaddr"
"tailscale.com/health"
"tailscale.com/log/logheap"
"tailscale.com/net/dnscache"
"tailscale.com/net/netns"
@@ -537,9 +538,16 @@ func (c *Direct) sendMapRequest(ctx context.Context, maxPolls int, cb func(*netm
DebugFlags: c.debugFlags,
OmitPeers: cb == nil,
}
var extraDebugFlags []string
if hostinfo != nil && ipForwardingBroken(hostinfo.RoutableIPs) {
extraDebugFlags = append(extraDebugFlags, "warn-ip-forwarding-off")
}
if health.RouterHealth() != nil {
extraDebugFlags = append(extraDebugFlags, "warn-router-unhealthy")
}
if len(extraDebugFlags) > 0 {
old := request.DebugFlags
request.DebugFlags = append(old[:len(old):len(old)], "warn-ip-forwarding-off")
request.DebugFlags = append(old[:len(old):len(old)], extraDebugFlags...)
}
if c.newDecompressor != nil {
request.Compress = "zstd"