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fix decoding of packet numbers in different packet number spaces

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When QUIC abandoned the "stream 0" design, it introduced separate
packet number spaces for packets with different encryption levels.
Packet number compression now also works per packet number space.
The current code doesn't lead to any problems if the peer starts sending
with packet number 0, as we only exchange a few packets in the Initial
and the Handshake packet number space and there's nothing to compress.
It might lead to problems if the peer starts with a large packet number
in one space (which is allowed by the spec), and then starts with a
small packet number in another packet number space.
This commit is contained in:
Marten Seemann 2020-11-23 20:46:28 +07:00
parent ed1956f5a9
commit 95334202c5
9 changed files with 125 additions and 57 deletions
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14
internal/mocks/long_header_opener.go
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@ -34,6 +34,20 @@ func (m *MockLongHeaderOpener) EXPECT() *MockLongHeaderOpenerMockRecorder {
return m.recorder
}
// DecodePacketNumber mocks base method
func (m *MockLongHeaderOpener) DecodePacketNumber(arg0 protocol.PacketNumber, arg1 protocol.PacketNumberLen) protocol.PacketNumber {
m.ctrl.T.Helper()
ret := m.ctrl.Call(m, "DecodePacketNumber", arg0, arg1)
ret0, _ := ret[0].(protocol.PacketNumber)
return ret0
}
// DecodePacketNumber indicates an expected call of DecodePacketNumber
func (mr *MockLongHeaderOpenerMockRecorder) DecodePacketNumber(arg0, arg1 interface{}) *gomock.Call {
mr.mock.ctrl.T.Helper()
return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DecodePacketNumber", reflect.TypeOf((*MockLongHeaderOpener)(nil).DecodePacketNumber), arg0, arg1)
}
// DecryptHeader mocks base method
func (m *MockLongHeaderOpener) DecryptHeader(arg0 []byte, arg1 *byte, arg2 []byte) {
m.ctrl.T.Helper()