#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
+#ifdef HAVE_NETINET_TCP_H
+# include <netinet/tcp.h>
+#endif
#ifdef HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
+#ifdef HAVE_POLL_H
+# include <poll.h>
+#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif