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fix: PSK extension w/o session cache crashing

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Fixes a bug causing client to crash (SIGSEGV) WHEN PSK extension is set with empty session cache AND server sends HelloRetryRequest.
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Gaukas Wang 2023-03-22 17:20:03 -06:00
parent 6d2506f52f
commit a308f9b946
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1 changed files with 3 additions and 0 deletions
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3
u_tls_extensions.go
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@ -1445,6 +1445,9 @@ type FakePreSharedKeyExtension struct {
}
func (e *FakePreSharedKeyExtension) writeToUConn(uc *UConn) error {
if session, ok := uc.config.ClientSessionCache.Get(clientSessionCacheKey(uc.conn.RemoteAddr(), uc.config)); !ok || session == nil {
return nil // don't write the extension if there is no session
}
uc.HandshakeState.Hello.PskIdentities = e.PskIdentities
uc.HandshakeState.Hello.PskBinders = e.PskBinders
return nil