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ipn: put discovery key generation behind an environment flag for now

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Later we'll want to use the presence of a discovery key as a signal
that the node knows how to participate in discovery. Currently the
code generates keys and sends them to the control server but doesn't
do anything with them, which is a bad state to stay in lest we release
this code and end up with nodes in the future that look like they're
functional with the new discovery protocol but aren't.

So for now, make this opt-in as a debug option for now, until the rest
of it is in.

Updates #483
This commit is contained in:
Brad Fitzpatrick 2020-06-20 10:18:13 -07:00
parent 00ca17edf4
commit 666d404066
1 changed files with 8 additions and 3 deletions
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11
ipn/local.go
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@ -8,6 +8,8 @@
"context"
"errors"
"fmt"
"os"
"strconv"
"strings"
"sync"
"time"
@ -358,9 +360,12 @@ func (b *LocalBackend) Start(opts Options) error {
b.updateFilter(nil)
discoPrivate := key.NewPrivate()
b.e.SetDiscoPrivateKey(discoPrivate)
discoPublic := tailcfg.DiscoKey(discoPrivate.Public())
var discoPublic tailcfg.DiscoKey
if useDisco, _ := strconv.ParseBool(os.Getenv("TS_DEBUG_USE_DISCO")); useDisco {
discoPrivate := key.NewPrivate()
b.e.SetDiscoPrivateKey(discoPrivate)
discoPublic = tailcfg.DiscoKey(discoPrivate.Public())
}
var err error
if persist == nil {