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diff --git a/nsock/src/netutils.h b/nsock/src/netutils.h
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+/***************************************************************************
+ * netutils.h -- This contains some useful little network/socket related   *
+ * utility functions.                                                      *
+ *                                                                         *
+ ***********************IMPORTANT NSOCK LICENSE TERMS***********************
+ *
+ * The nsock parallel socket event library is (C) 1999-2023 Nmap Software LLC
+ * This library is free software; you may redistribute and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; Version 2. This guarantees your right to use, modify, and
+ * redistribute this software under certain conditions. If this license is
+ * unacceptable to you, Nmap Software LLC may be willing to sell alternative
+ * licenses (contact sales@nmap.com ).
+ *
+ * As a special exception to the GPL terms, Nmap Software LLC grants permission
+ * to link the code of this program with any version of the OpenSSL library
+ * which is distributed under a license identical to that listed in the included
+ * docs/licenses/OpenSSL.txt file, and distribute linked combinations including
+ * the two. You must obey the GNU GPL in all respects for all of the code used
+ * other than OpenSSL. If you modify this file, you may extend this exception to
+ * your version of the file, but you are not obligated to do so.
+ *
+ * If you received these files with a written license agreement stating terms
+ * other than the (GPL) terms above, then that alternative license agreement
+ * takes precedence over this comment.
+ *
+ * Source is provided to this software because we believe users have a right to
+ * know exactly what a program is going to do before they run it. This also
+ * allows you to audit the software for security holes.
+ *
+ * Source code also allows you to port Nmap to new platforms, fix bugs, and add
+ * new features. You are highly encouraged to send your changes to the
+ * dev@nmap.org mailing list for possible incorporation into the main
+ * distribution. By sending these changes to Fyodor or one of the Insecure.Org
+ * development mailing lists, or checking them into the Nmap source code
+ * repository, it is understood (unless you specify otherwise) that you are
+ * offering the Nmap Project (Nmap Software LLC) the unlimited, non-exclusive
+ * right to reuse, modify, and relicense the code. Nmap will always be available
+ * Open Source, but this is important because the inability to relicense code
+ * has caused devastating problems for other Free Software projects (such as KDE
+ * and NASM). We also occasionally relicense the code to third parties as
+ * discussed above. If you wish to specify special license conditions of your
+ * contributions, just say so when you send them.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License v2.0 for more
+ * details (http://www.gnu.org/licenses/gpl-2.0.html).
+ *
+ ***************************************************************************/
+
+/* $Id$ */
+
+#ifndef NETUTILS_H
+#define NETUTILS_H
+
+#ifdef HAVE_CONFIG_H
+#include "nsock_config.h"
+#include "nbase_config.h"
+#endif
+
+#if HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#include "nsock_internal.h"
+
+#ifdef WIN32
+#include "nbase_winconfig.h"
+/* nbase_winunix.h somehow reason.h to get included */
+#include "nbase_winunix.h"
+#endif
+
+#if HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+
+#if HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#else
+#ifndef rlim_t
+#define rlim_t int
+#endif
+#endif
+/* Maximize the number of file descriptors (including sockets) allowed for this
+ * process and return that maximum value (note -- you better not actually open
+ * this many -- stdin, stdout, other files opened by libraries you use, etc. all
+ * count toward this limit.  Leave a little slack */
+rlim_t maximize_fdlimit(void);
+
+/* Get the UNIX domain socket path or empty string if the address family != AF_UNIX. */
+const char *get_unixsock_path(const struct sockaddr_storage *addr);
+
+/* Get the peer address string. In case of a Unix domain socket, returns the
+ * path to UNIX socket, otherwise it returns string containing
+ * "<address>:<port>". */
+char *get_peeraddr_string(const struct niod *iod);
+
+/* Get the local bind address string. */
+char *get_localaddr_string(const struct niod *iod);
+
+#endif /* NETUTILS_H */
+