send a reserved version number in the SHLO

internal/handshake/crypto_setup_server.go

@@ -431,7 +431,7 @@ func (h *cryptoSetupServer) handleCHLO(sni string, data []byte, cryptoData map[T
 	replyMap := h.params.getHelloMap()
 	// add crypto parameters
 	verTag := &bytes.Buffer{}
-	for _, v := range h.supportedVersions {
+	for _, v := range protocol.GetGreasedVersions(h.supportedVersions) {
 		utils.BigEndian.WriteUint32(verTag, uint32(v))
 	}
 	replyMap[TagPUBS] = ephermalKex.PublicKey()