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This change enables DNS client support within PJSIP. System nameservers are automatically discovered using res_init or res_ninit. If this fails then PJSIP will resort to using gethostbyname for resolution. By enabling this support we gain SRV support, failover, and weight support. (closes issue ASTERISK-23435) Reported by: Matt Jordan Review: https://reviewboard.asterisk.org/r/3343/ ........ Merged revisions 410795 from http://svn.asterisk.org/svn/asterisk/branches/12 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@410796 65c4cc65-6c06-0410-ace0-fbb531ad65f3
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Written by Thorsten Lockert <tholo@trollphone.org>
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*
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* Funding provided by Troll Phone Networks AS
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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* \brief DNS support for Asterisk
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* \author Thorsten Lockert <tholo@trollphone.org>
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*/
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#ifndef _ASTERISK_DNS_H
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#define _ASTERISK_DNS_H
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/*! \brief Perform DNS lookup (used by DNS, enum and SRV lookups)
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\param context
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\param dname Domain name to lookup (host, SRV domain, TXT record name)
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\param class Record Class (see "man res_search")
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\param type Record type (see "man res_search")
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\param callback Callback function for handling DNS result
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\note Asterisk DNS is synchronus at this time. This means that if your DNS
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services does not work, Asterisk may lock while waiting for response.
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*/
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int ast_search_dns(void *context, const char *dname, int class, int type,
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int (*callback)(void *context, unsigned char *answer, int len, unsigned char *fullanswer));
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/*! \brief Retrieve the configured nameservers of the system */
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struct ao2_container *ast_dns_get_nameservers(void);
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#endif /* _ASTERISK_DNS_H */
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