Investigating the cause of the crash further;
When there is no internet connection, pj_getaddrinfo() returns PJ_ERESOLVE.
When connected to a NAT64 + DNS64 network, pj_getaddrinfo() returns PJ_SUCCESS
but no results are returned - count is set to 0.
pjsip_resolve() assumes that if pj_getaddrinfo() returns PJ_SUCCESS then a
valid pj_addrinfo was returned, and does not check the value of count. This
results in a failed assertion when calling pj_sockaddr_set_port().
I'm not sure whether the fault lies in pj_getaddrinfo() or pjsip_resolve(),
but a trivial fix is to add a check for the value of count after calling
pj_getaddrinfo():
/* Resolve */
count = 1;
status = pj_getaddrinfo(af, &target->addr.host, &count, &ai);
if (status != PJ_SUCCESS || count != 1) {
/* "Normalize" error to PJ_ERESOLVE. This is a special error
* because it will be translated to SIP status 502 by
* sip_transaction.c
*/
status = PJ_ERESOLVE;
goto on_error;
}
I would encourage bumping the priority of #419 (ipv6 DNS) for inclusion in
2.5 if at all possible, since Apple will soon be making support of ipv6-only
networks a requirement for app submission. Anyone building pjsip into an app
will need this support.
- https://developer.apple.com/news/?id=08282015a
Regards,
Nick
> On 29 Jan 2016, at 04:49, Riza Sulistyo <riza at pjsip.org> wrote:
>
> Hi Nick,
>
> We have open ticket for ipv6 in (#419) and (#422).
> We are thinking about bumping the priority of one of the ticket to 2.6,
> however it's not decided yet at the moment.
>
> Best Regards,
>
> Riza
>
> On Fri, Jan 29, 2016 at 8:59 AM, Riza Sulistyo <riza at pjsip.org> wrote:
> Hi Nick,
>
> Unfortunately, support for DNS (ipv6) is currently not on our roadmap since we have a workaround.
> However if you are interested in implementing it, we are open to the patch.
>
> Best Regards,
>
> Riza
>
> On Wed, Jan 27, 2016 at 11:26 PM, Nick Dowell <nick at nickdowell.com> wrote:
> Thanks Riza,
>
> By resolving the server's ipv6 address and specifying that as the proxy, I have been able to get pjsip to connect over ipv6.
>
> Is there a plan for when ipv6 will be fully supported and enabled by default in pjsip?
>
> FYI here are the logs and call stack for the failed assertion that occurs when an ipv6 address is not specified for the proxy;
>
> 13:29:31.804 os_core_unix.c !pjlib 2.4.5 for POSIX initialized
> 13:29:31.810 sip_endpoint.c .Creating endpoint instance...
> 13:29:31.811 pjlib .select() I/O Queue created (0x12d092628)
> 13:29:31.811 sip_endpoint.c .Module "mod-msg-print" registered
> 13:29:31.812 sip_transport. .Transport manager created.
> 13:29:31.812 pjsua_core.c .PJSUA state changed: NULL --> CREATED
> 13:29:31.812 sip_endpoint.c .Module "mod-pjsua-log" registered
> 13:29:31.813 sip_endpoint.c .Module "mod-tsx-layer" registered
> 13:29:31.813 sip_endpoint.c .Module "mod-stateful-util" registered
> 13:29:31.813 sip_endpoint.c .Module "mod-ua" registered
> 13:29:31.813 sip_endpoint.c .Module "mod-100rel" registered
> 13:29:31.813 sip_endpoint.c .Module "mod-pjsua" registered
> 13:29:31.813 sip_endpoint.c .Module "mod-invite" registered
> 13:29:31.839 coreaudio_dev. .. dev_id 0: iPhone IO device (in=1, out=1) 8000Hz
> 13:29:31.845 coreaudio_dev. ..core audio initialized
> 13:29:31.845 pjlib ..select() I/O Queue created (0x12d093628)
> 13:29:31.847 speex_codec.c ..Adjusting quality to 5 for uwb
> 13:29:31.847 conference.c ..Creating conference bridge with 12 ports
> 13:29:31.847 Master/sound ..Using delay buffer with WSOLA.
> 13:29:31.863 sip_endpoint.c .Module "mod-evsub" registered
> 13:29:31.863 sip_endpoint.c .Module "mod-presence" registered
> 13:29:31.863 evsub.c .Event pkg "presence" registered by mod-presence
> 13:29:31.863 sip_endpoint.c .Module "mod-mwi" registered
> 13:29:31.863 evsub.c .Event pkg "message-summary" registered by mod-mwi
> 13:29:31.863 sip_endpoint.c .Module "mod-refer" registered
> 13:29:31.863 evsub.c .Event pkg "refer" registered by mod-refer
> 13:29:31.863 sip_endpoint.c .Module "mod-pjsua-pres" registered
> 13:29:31.863 sip_endpoint.c .Module "mod-pjsua-im" registered
> 13:29:31.863 sip_endpoint.c .Module "mod-pjsua-options" registered
> 13:29:31.863 pjsua_core.c .No SIP worker threads created
> 13:29:31.863 pjsua_core.c .pjsua version 2.4.5 for initialized
> 13:29:31.863 pjsua_core.c .PJSUA state changed: CREATED --> INIT
> 13:29:31.865 pjsua_core.c SIP UDP socket reachable at 10.4.45.223:64335
> 13:29:31.865 udp0x12cd73c90 SIP UDP transport started, published address is 10.4.45.223:64335
> 13:29:31.865 tcptp:55928 SIP TCP listener ready for incoming connections at 10.4.45.223:55928
> 13:29:31.866 tlstp:55929 SIP TLS listener is ready for incoming connections at 10.4.45.223:55929
> 13:29:31.866 pjsua_core.c SIP UDP socket reachable at 2001:2::aab1:89b7:1c58:b1c0:860f:64336
> 13:29:31.866 udpv60x12cd732 SIP UDP IPv6 transport started, published address is [2001:2::aab1:89b7:1c58:b1c0:860f]:64336
> 13:29:31.866 tcptp:55930 SIP TCP listener ready for incoming connections at 2001:2::aab1:89b7:1c58:b1c0:860f:55930
> 13:29:31.867 tlstp:55931 SIP TLS listener is ready for incoming connections at 2001:2::aab1:89b7:1c58:b1c0:860f:55931
> 13:29:31.868 pjsua_core.c PJSUA state changed: INIT --> STARTING
> 13:29:31.868 sip_endpoint.c .Module "mod-unsolicited-mwi" registered
> 13:29:31.868 pjsua_core.c .PJSUA state changed: STARTING --> RUNNING
> 13:29:31.868 pjsua_acc.c Adding account: id=sip:****@****
> 13:29:31.868 pjsua_acc.c .Account sip:****@**** added with id 0
> 13:29:31.868 pjsua_acc.c .Acc 0: setting registration..
> 13:29:31.869 sip_transport. ..Warning: unable to determine local interface, fallback to default interface!
> Assertion failed: (a->addr.sa_family == PJ_AF_INET || a->addr.sa_family == PJ_AF_INET6), function pj_sockaddr_get_len, file ../src/pj/sock_common.c, line 388.
>
>
> backtrace:
>
> pj_sockaddr_get_len + 204 at sock_common.c:387
> pjsua_acc_get_uac_addr + 1264 at pjsua_acc.c:3159
> pjsua_acc_create_uac_contact + 288 at pjsua_acc.c:3252
> pjsua_regc_init + 444 at pjsua_acc.c:2341
> pjsua_acc_set_registration + 608 at pjsua_acc.c:2523
> pjsua_acc_add + 1592 at pjsua_acc.c:487
>
>
> config_site.h:
>
> #define PJ_CONFIG_IPHONE 1
> #define PJ_HAS_IPV6 1
> #include <pj/config_site_sample.h>
>
>
>
> > On 27 Jan 2016, at 05:24, Riza Sulistyo <riza at pjsip.org> wrote:
> >
> > Hi Nick,
> >
> > I assume you have followed the guide, as described here.
> >
> > The pages states that DNS resolution for ipv6 is still not supported.
> > Hence you need to resolve any address on app and pass the IP to the stack.
> >
> > If you are still having trouble afterwards, the logs (level 5), call stack and build settings will be helpful.
> >
> > Best Regards,
> >
> > Riza
> >
> > On Tue, Jan 26, 2016 at 5:43 PM, Nick Dowell <nick at nickdowell.com> wrote:
> > Crash observed with pjsip 2.4.5, but this has been reported previously, here;
> > http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/2015-July/018518.html
> >
> > Steps to reproduce;
> > 1. Create a NAT64 network using Mac OS X 10.11 - https://developer.apple.com/library/ios/documentation/NetworkingInternetWeb/Conceptual/NetworkingOverview/UnderstandingandPreparingfortheIPv6Transition/UnderstandingandPreparingfortheIPv6Transition.html#//apple_ref/doc/uid/TP40010220-CH213-SW16
> > 2. Connect iPhone to newly created NAT64 Wi-Fi network
> > 3. Open an app using pjsip on the iPhone
> >
> > This results in the following failed assertion and causes the app to abort
> >
> > Assertion failed: (a->addr.sa_family == PJ_AF_INET || a->addr.sa_family == PJ_AF_INET6), function pj_sockaddr_get_len, file ../src/pj/sock_common.c, line 388.
> >
> >
> > _______________________________________________
> > Visit our blog: http://blog.pjsip.org
> >
> > pjsip mailing list
> > pjsip at lists.pjsip.org
> > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
> >
> >
> > _______________________________________________
> > Visit our blog: http://blog.pjsip.org
> >
> > pjsip mailing list
> > pjsip at lists.pjsip.org
> > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
>
>
> _______________________________________________
> Visit our blog: http://blog.pjsip.org
>
> pjsip mailing list
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> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
>
>
>
> _______________________________________________
> Visit our blog: http://blog.pjsip.org
>
> pjsip mailing list
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