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check transport parameters after 0-RTT resumption (#3985)

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* check new transport parameters do not contain redueced limits

* redefine ValidForUpdate and add tests

* fix test assertion and update comment
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Ameagari 2023-08-02 09:34:42 +08:00 • committed by GitHub
parent f3a0ce1599
commit 1c47ebefc0
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34
connection_test.go
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@ -3035,6 +3035,40 @@ var _ = Describe("Client Connection", func() {
ErrorMessage: "expected original_destination_connection_id to equal deadbeef, is decafbad",
})))
})
It("errors if the transport parameters contain reduced limits after knowing 0-RTT data is accepted by the server", func() {
conn.perspective = protocol.PerspectiveClient
conn.peerParams = &wire.TransportParameters{
ActiveConnectionIDLimit: 3,
InitialMaxData: 0x5000,
InitialMaxStreamDataBidiLocal: 0x5000,
InitialMaxStreamDataBidiRemote: 1000,
InitialMaxStreamDataUni: 1000,
MaxBidiStreamNum: 500,
MaxUniStreamNum: 500,
}
params := &wire.TransportParameters{
OriginalDestinationConnectionID: destConnID,
InitialSourceConnectionID: destConnID,
ActiveConnectionIDLimit: 3,
InitialMaxData: 0x5000,
InitialMaxStreamDataBidiLocal: 0x5000,
InitialMaxStreamDataBidiRemote: 1000,
InitialMaxStreamDataUni: 1000,
MaxBidiStreamNum: 300,
MaxUniStreamNum: 300,
}
expectClose(false, true)
processed := make(chan struct{})
tracer.EXPECT().ReceivedTransportParameters(params).Do(func(*wire.TransportParameters) { close(processed) })
cryptoSetup.EXPECT().ConnectionState().Return(handshake.ConnectionState{Used0RTT: true})
paramsChan <- params
Eventually(processed).Should(BeClosed())
Eventually(errChan).Should(Receive(MatchError(&qerr.TransportError{
ErrorCode: qerr.ProtocolViolation,
ErrorMessage: "server sent reduced limits after accepting 0-RTT data",
})))
})
})
Context("handling potentially injected packets", func() {