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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
ipn/ipnlocal/local.go
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@@ -2400,7 +2400,7 @@ func (b *LocalBackend) StartLoginInteractive() {
}
}
func (b *LocalBackend) Ping(ctx context.Context, ip netip.Addr, pingType tailcfg.PingType) (*ipnstate.PingResult, error) {
func (b *LocalBackend) Ping(ctx context.Context, ip netip.Addr, pingType tailcfg.PingType, size int) (*ipnstate.PingResult, error) {
if pingType == tailcfg.PingPeerAPI {
t0 := b.clock.Now()
node, base, err := b.pingPeerAPI(ctx, ip)
@@ -2423,7 +2423,7 @@ func (b *LocalBackend) Ping(ctx context.Context, ip netip.Addr, pingType tailcfg
return pr, nil
}
ch := make(chan *ipnstate.PingResult, 1)
b.e.Ping(ip, pingType, func(pr *ipnstate.PingResult) {
b.e.Ping(ip, pingType, size, func(pr *ipnstate.PingResult) {
select {
case ch <- pr:
default: