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wgengine,ipn,cmd/tailscale: add size option to ping (#8739)

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This adds the capability to pad disco ping message payloads to reach a
specified size. It also plumbs it through to the tailscale ping -size
flag.

Disco pings used for actual endpoint discovery do not use this yet.

Updates #311.

Signed-off-by: salman <salman@tailscale.com>
Co-authored-by: Val <valerie@tailscale.com>
This commit is contained in:
salman aljammaz
2023-08-08 13:11:28 +01:00
committed by GitHub
parent 49896cbdfa
commit 25a7204bb4
12 changed files with 125 additions and 30 deletions
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4
control/controlclient/direct.go
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@@ -171,7 +171,7 @@ type ControlDialPlanner interface {
// Pinger is the LocalBackend.Ping method.
type Pinger interface {
// Ping is a request to do a ping with the peer handling the given IP.
Ping(ctx context.Context, ip netip.Addr, pingType tailcfg.PingType) (*ipnstate.PingResult, error)
Ping(ctx context.Context, ip netip.Addr, pingType tailcfg.PingType, size int) (*ipnstate.PingResult, error)
}
type Decompressor interface {
@@ -1671,7 +1671,7 @@ func doPingerPing(logf logger.Logf, c *http.Client, pr *tailcfg.PingRequest, pin
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
res, err := pinger.Ping(ctx, pr.IP, pingType)
res, err := pinger.Ping(ctx, pr.IP, pingType, 0)
if err != nil {
d := time.Since(start).Round(time.Millisecond)
logf("doPingerPing: ping error of type %q to %v after %v: %v", pingType, pr.IP, d, err)