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+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*
+ * DNS SRV record support
+ */
+
+#ifndef _ASTERISK_SRV_H
+#define _ASTERISK_SRV_H
+
+/*!
+ \file srv.h
+ \brief Support for DNS SRV records, used in to locate SIP services.
+ \note Note: This SRV record support will respect the priority and
+ weight elements of the records that are returned, but there are
+ no provisions for retrying or failover between records.
+*/
+
+/*! Lookup entry in SRV records Returns 1 if found, 0 if not found, -1 on hangup
+ Only do SRV record lookup if you get a domain without a port. If you get a port #, it's a DNS host name.
+*/
+/*! \param chan Ast channel
+ \param host host name (return value)
+ \param hostlen Length of string "host"
+ \param port Port number (return value)
+ \param service Service tag for SRV lookup (like "_sip._udp" or "_stun._udp"
+*/
+extern int ast_get_srv(struct ast_channel *chan, char *host, int hostlen, int *port, const char *service);
+
+#endif /* _ASTERISK_SRV_H */