private Object handleVersionRequest() {
    VersionResponse response = new VersionResponse();
    response.setVersionOrdinal(KnownVersion.CURRENT_ORDINAL);
    return response;
  }
Reads the next 3 bytes of the gossip version where first byte was 0.
geode-tcp-server/src/main/java/org/apache/geode/distributed/internal/tcpserver/TcpServer.java