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tcp.Policy: add newTransmitLimit output

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soypat
2026-09-06 12:29:20 -07:00
parent 04f6294d9c
commit 53b606a1ff
4 changed files with 49 additions and 33 deletions
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tcp/rto/timer_test.go
+5 -5
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@@ -106,15 +106,15 @@ func TestRTO_RetransmitOnTimeout(t *testing.T) {
const iss = uint32(1000)
r.postTx(dataSeg(iss, 100), 0)
if _, rtx, _ := r.preTx(int64(rtoInitial)-1, tcp.Value(iss)); rtx {
if _, _, rtx := r.preTx(int64(rtoInitial)-1, tcp.Value(iss)); rtx {
t.Fatal("must not retransmit before the deadline")
}
from, rtx, hold := r.preTx(int64(rtoInitial), tcp.Value(iss))
limit, from, rtx := r.preTx(int64(rtoInitial), tcp.Value(iss))
if !rtx {
t.Fatal("RTO must fire at the deadline with data outstanding")
}
if hold {
t.Error("the estimator never holds new data back")
if limit != tcp.TransmitUnlimited {
t.Error("the estimator never limits new data")
}
if from != tcp.Value(iss) {
t.Errorf("retransmit from %d, want snd.UNA=%d", from, iss)
@@ -293,7 +293,7 @@ func TestRTO_RetransmitsZeroWindowProbe(t *testing.T) {
now := int64(rtoInitial)
prevRTO := r.CurrentRTO()
for attempt := 1; attempt <= 4; attempt++ {
from, rtx, _ := r.preTx(now, tcp.Value(iss))
_, from, rtx := r.preTx(now, tcp.Value(iss))
if !rtx {
t.Fatalf("attempt %d: timer did not fire; the probe would never be resent", attempt)
}