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drop duplicate packets

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Duplicate detection uses the same data structure that is used to track
received packets to generate ACK frames. That means that after an old
ACK range has been pruned, a severly delayed packet might be incorrectly
detected as a duplicate.
As we wouldn't have acknowledged receipt of this packet, this situation
would have resulted in a retransmission by the peer anyway, so dropping
the packet won't cause a big regression.
This commit is contained in:
Marten Seemann 2020-05-27 09:20:51 +07:00
parent fd5ecee85d
commit 440ff107a3
10 changed files with 170 additions and 4 deletions
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14
internal/mocks/ackhandler/received_packet_handler.go
View file

@ -76,6 +76,20 @@ func (mr *MockReceivedPacketHandlerMockRecorder) GetAlarmTimeout() *gomock.Call
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetAlarmTimeout", reflect.TypeOf((*MockReceivedPacketHandler)(nil).GetAlarmTimeout))
}
// IsPotentiallyDuplicate mocks base method
func (m *MockReceivedPacketHandler) IsPotentiallyDuplicate(arg0 protocol.PacketNumber, arg1 protocol.EncryptionLevel) bool {
m.ctrl.T.Helper()
ret := m.ctrl.Call(m, "IsPotentiallyDuplicate", arg0, arg1)
ret0, _ := ret[0].(bool)
return ret0
}
// IsPotentiallyDuplicate indicates an expected call of IsPotentiallyDuplicate
func (mr *MockReceivedPacketHandlerMockRecorder) IsPotentiallyDuplicate(arg0, arg1 interface{}) *gomock.Call {
mr.mock.ctrl.T.Helper()
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "IsPotentiallyDuplicate", reflect.TypeOf((*MockReceivedPacketHandler)(nil).IsPotentiallyDuplicate), arg0, arg1)
}
// ReceivedPacket mocks base method
func (m *MockReceivedPacketHandler) ReceivedPacket(arg0 protocol.PacketNumber, arg1 protocol.EncryptionLevel, arg2 time.Time, arg3 bool) error {
m.ctrl.T.Helper()