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only queue packets for decryption if the opener is not yet available

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This commit is contained in:
Marten Seemann
2018-12-20 15:17:18 +06:30
parent 605846cfd8
commit d6c304610d
5 changed files with 59 additions and 40 deletions
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9
internal/handshake/crypto_setup.go
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@@ -47,6 +47,11 @@ func (m messageType) String() string {
}
}
// ErrOpenerNotYetAvailable is returned when an opener is requested for an encryption level,
// but the corresponding opener has not yet been initialized
// This can happen when packets arrive out of order.
var ErrOpenerNotYetAvailable = errors.New("CryptoSetup: opener at this encryption level not yet available")
type cryptoSetup struct {
tlsConf *qtls.Config
@@ -520,12 +525,12 @@ func (h *cryptoSetup) GetOpener(level protocol.EncryptionLevel) (Opener, error)
return h.initialOpener, nil
case protocol.EncryptionHandshake:
if h.handshakeOpener == nil {
return nil, errors.New("CryptoSetup: no opener with encryption level Handshake")
return nil, ErrOpenerNotYetAvailable
}
return h.handshakeOpener, nil
case protocol.Encryption1RTT:
if h.opener == nil {
return nil, errors.New("CryptoSetup: no opener with encryption level 1-RTT")
return nil, ErrOpenerNotYetAvailable
}
return h.opener, nil
default: