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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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12
internal/wire/transport_parameters.go
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@ -481,6 +481,18 @@ func (p *TransportParameters) ValidFor0RTT(saved *TransportParameters) bool {
p.ActiveConnectionIDLimit == saved.ActiveConnectionIDLimit
}
// ValidForUpdate checks that the new transport parameters don't reduce limits after resuming a 0-RTT connection.
// It is only used on the client side.
func (p *TransportParameters) ValidForUpdate(saved *TransportParameters) bool {
return p.ActiveConnectionIDLimit >= saved.ActiveConnectionIDLimit &&
p.InitialMaxData >= saved.InitialMaxData &&
p.InitialMaxStreamDataBidiLocal >= saved.InitialMaxStreamDataBidiLocal &&
p.InitialMaxStreamDataBidiRemote >= saved.InitialMaxStreamDataBidiRemote &&
p.InitialMaxStreamDataUni >= saved.InitialMaxStreamDataUni &&
p.MaxBidiStreamNum >= saved.MaxBidiStreamNum &&
p.MaxUniStreamNum >= saved.MaxUniStreamNum
}
// String returns a string representation, intended for logging.
func (p *TransportParameters) String() string {
logString := "&wire.TransportParameters{OriginalDestinationConnectionID: %s, InitialSourceConnectionID: %s, "