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retire conn IDs with sequence numbers smaller than the currently active

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This commit is contained in:
Marten Seemann 2020-05-23 15:08:24 +07:00
parent fa69438124
commit b0c1aed4d2
2 changed files with 23 additions and 3 deletions
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6
conn_id_manager.go
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@ -68,9 +68,9 @@ func (h *connIDManager) Add(f *wire.NewConnectionIDFrame) error {
}
func (h *connIDManager) add(f *wire.NewConnectionIDFrame) error {
// If the NEW_CONNECTION_ID frame is reordered, such that its sequence number
// was already retired, send the RETIRE_CONNECTION_ID frame immediately.
if f.SequenceNumber < h.highestRetired {
// If the NEW_CONNECTION_ID frame is reordered, such that its sequence number is smaller than the currently active
// connection ID or if it was already retired, send the RETIRE_CONNECTION_ID frame immediately.
if f.SequenceNumber <= h.activeSequenceNumber || f.SequenceNumber < h.highestRetired {
h.queueControlFrame(&wire.RetireConnectionIDFrame{
SequenceNumber: f.SequenceNumber,
})

20
conn_id_manager_test.go
View file

@ -181,6 +181,26 @@ var _ = Describe("Connection ID Manager", func() {
Expect(frameQueue[0].(*wire.RetireConnectionIDFrame).SequenceNumber).To(BeEquivalentTo(4))
})
It("ignores reordered connection IDs, if their sequence number was already retired or less than active", func() {
Expect(m.Add(&wire.NewConnectionIDFrame{
SequenceNumber: 10,
ConnectionID: protocol.ConnectionID{0xde, 0xad, 0xbe, 0xef},
RetirePriorTo: 5,
})).To(Succeed())
Expect(frameQueue).To(HaveLen(1))
Expect(frameQueue[0].(*wire.RetireConnectionIDFrame).SequenceNumber).To(BeZero())
frameQueue = nil
Expect(m.Get()).To(Equal(protocol.ConnectionID{0xde, 0xad, 0xbe, 0xef}))
Expect(m.Add(&wire.NewConnectionIDFrame{
SequenceNumber: 9,
ConnectionID: protocol.ConnectionID{0xde, 0xca, 0xfb, 0xad},
RetirePriorTo: 5,
})).To(Succeed())
Expect(frameQueue).To(HaveLen(1))
Expect(frameQueue[0].(*wire.RetireConnectionIDFrame).SequenceNumber).To(BeEquivalentTo(9))
})
It("errors when the peer sends too connection IDs", func() {
for i := uint8(1); i < protocol.MaxActiveConnectionIDs; i++ {
Expect(m.Add(&wire.NewConnectionIDFrame{