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res_rtp: Fix regression when IPv6 is not available.

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The latest Release candidate fails to create RTP streams when IPv6
is not available. Due to the changes made in September the ast_sockaddr
structure passed around to create these streams is always of AF_INET6
type, causing failure when used for IPv4. This patch adds a utility
function to check for availability of IPv6 and applies such check
at startup to determine how to create the ast_sockaddr structures.

ASTERISK-26617 #close

Change-Id: I627a4e91795e821111e1cda523f083a40d0e0c3e
This commit is contained in:
Guido Falsi
2016-11-22 18:20:06 +01:00
committed by Joshua Colp
parent a0c0b1c9cb
commit 75230f4c01
4 changed files with 33 additions and 2 deletions
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9
include/asterisk/utils.h
View File

@@ -1126,4 +1126,13 @@ int ast_file_is_readable(const char *filename);
*/
int ast_compare_versions(const char *version1, const char *version2);
/*
* \brief Test that an OS supports IPv6 Networking.
* \since 13.14.0
*
* \return True (non-zero) if the IPv6 supported.
* \return False (zero) if the OS doesn't support IPv6.
*/
int ast_check_ipv6(void);
#endif /* _ASTERISK_UTILS_H */

12
main/utils.c
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@@ -2391,6 +2391,18 @@ char *ast_utils_which(const char *binary, char *fullpath, size_t fullpath_size)
return NULL;
}
int ast_check_ipv6(void)
{
int udp6_socket = socket(AF_INET6, SOCK_DGRAM, 0);
if (udp6_socket < 0) {
return 0;
}
close(udp6_socket);
return 1;
}
void DO_CRASH_NORETURN ast_do_crash(void)
{
#if defined(DO_CRASH)

7
res/res_pjsip_sdp_rtp.c
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@@ -38,6 +38,7 @@
#include <pjmedia.h>
#include <pjlib.h>
#include "asterisk/utils.h"
#include "asterisk/module.h"
#include "asterisk/format.h"
#include "asterisk/format_cap.h"
@@ -1514,7 +1515,11 @@ static int load_module(void)
{
CHECK_PJSIP_SESSION_MODULE_LOADED();
ast_sockaddr_parse(&address_rtp, "::", 0);
if (ast_check_ipv6()) {
ast_sockaddr_parse(&address_rtp, "::", 0);
} else {
ast_sockaddr_parse(&address_rtp, "0.0.0.0", 0);
}
if (!(sched = ast_sched_context_create())) {
ast_log(LOG_ERROR, "Unable to create scheduler context.\n");

7
res/res_pjsip_t38.c
View File

@@ -37,6 +37,7 @@
#include <pjmedia.h>
#include <pjlib.h>
#include "asterisk/utils.h"
#include "asterisk/module.h"
#include "asterisk/udptl.h"
#include "asterisk/netsock2.h"
@@ -916,7 +917,11 @@ static int load_module(void)
{
CHECK_PJSIP_SESSION_MODULE_LOADED();
ast_sockaddr_parse(&address, "::", 0);
if (ast_check_ipv6()) {
ast_sockaddr_parse(&address, "::", 0);
} else {
ast_sockaddr_parse(&address, "0.0.0.0", 0);
}
if (ast_sip_session_register_supplement(&t38_supplement)) {
ast_log(LOG_ERROR, "Unable to register T.38 session supplement\n");