Bump github.com/refraction-networking/utls from 0.0.0-20190909200633-43c36d3c1f57 to 1.5.0

[dependabot]

Bumps github.com/refraction-networking/utls from 0.0.0-20190909200633-43c36d3c1f57 to 1.5.0.

Release notes

Sourced from github.com/refraction-networking/utls's releases.

v1.5.0 Post-Quantum and Session Resumption

What's Changed

• uTLS: X25519Kyber768Draft00 hybrid post-quantum key agreement by @​gaukas in refraction-networking/utls#223
• new: Support TLS-PSK (TLS 1.3) by @​gaukas, @​zeeker999 and @​3andne in refraction-networking/utls#231

A big shout out to @​3andne for spending time on major refactoring/revision in the Session Resumption for both TLS 1.2 (SessionTicket-based) and TLS 1.3 (PreSharedKey-based)!

New API

type ISessionTicketExtension interface {
	TLSExtension
// If false is returned, utls will invoke `InitializeByUtls()` for the necessary initialization.
Initializable
// InitializeByUtls is invoked when IsInitialized() returns false.
// It initializes the extension using a real and valid TLS 1.2 session.
InitializeByUtls(session *SessionState, ticket []byte)
GetSession() *SessionState
GetTicket() []byte

}
// SetSessionTicket sets the session ticket extension.
// If extension is nil, this will be a no-op.
func (uconn *UConn) SetSessionTicketExtension(sessionTicketExt ISessionTicketExtension)
type PreSharedKeyExtension interface {
// TLSExtension must be implemented by all PreSharedKeyExtension implementations.
TLSExtension
// If false is returned, utls will invoke `InitializeByUtls()` for the necessary initialization.
Initializable
SetOmitEmptyPsk(val bool)
// InitializeByUtls is invoked when IsInitialized() returns false.
// It initializes the extension using a real and valid TLS 1.3 session.
InitializeByUtls(session *SessionState, earlySecret []byte, binderKey []byte, identities []PskIdentity)
// GetPreSharedKeyCommon retrieves the final PreSharedKey-related states as defined in PreSharedKeyCommon.
GetPreSharedKeyCommon() PreSharedKeyCommon
// PatchBuiltHello is called once the hello message is fully applied and marshaled.
// Its purpose is to update the binders of PSK (Pre-Shared Key) identities.
PatchBuiltHello(hello *PubClientHelloMsg) error
mustEmbedUnimplementedPreSharedKeyExtension() // this works like a type guard

}
</tr></table>

... (truncated)

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[dependabot]

Superseded by #154.