[pjsua] IPv6 accaunt have to use media in IPv6

[Alexey Vasilyev <alexei.vasilyev@xxxxxxxxx>]

Hi, everybody.

I've tried to use pjsua app in IPv4+IPv6 environment. Pjproject v 2.8

This is config file:

--id sip:204@xxxxxxxxxxxx

--registrar sip:sip.test.com;transport=tcp

--ipv6

--no-udp

--use-srtp=0

--srtp-secure=0

--realm *

--username 204

--password xxxpasswordxxx

--log-level=6

--app-log-level=4

--log-file=pjsua.log

--auto-update-nat=0

--disable-stun

--null-audio

--play-file=demo.wav

--auto-play

--auto-answer=200

sip.test.com is resolved to IPv6 address. Pjsua successfully registered to it. And all signaling works fine. (With UDP and TLS the same)

When I try to call to pjsua, INVITE comes in IPv6, SDP also contains IPv6 address, but I can see, that RTP and RTCP sockets created are IPv4 only. So of course I get 488 reply from pjsua.

This is because when adding accounts from config tp_type is always 0. We don't know it. And when incoming call comes it by default creates sockets of IPv4.

I think, that if we register over IPv6, we should use the same AF for media. This patch saves tp_type the same, as transport type used for registration (auto_rereg is not used):

diff --git a/pjsip/src/pjsua-lib/pjsua_acc1.c b/pjsip/src/pjsua-lib/pjsua_acc.c

index 64d1124..c28ccd3 100644

--- a/pjsip/src/pjsua-lib/pjsua_acc1.c

+++ b/pjsip/src/pjsua-lib/pjsua_acc.c

@@ -2749,10 +2749,11 @@ PJ_DEF(pj_status_t) pjsua_acc_set_registration( pjsua_acc_id acc_id,

          * employed). A more reliable way is to query the regc directly

          * when needed.

          */

-       //pjsip_regc_info reg_info;

+       pjsip_regc_info reg_info;

-       //pjsip_regc_get_info(pjsua_var.acc[acc_id].regc, &reg_info);

+       pjsip_regc_get_info(pjsua_var.acc[acc_id].regc, &reg_info);

        //pjsua_var.acc[acc_id].auto_rereg.reg_tp = reg_info.transport;

+        pjsua_var.acc[acc_id].tp_type = pjsip_transport_get_type_from_flag(reg_info.transport->flag);

         if (pjsua_var.ua_cfg.cb.on_reg_started) {

             (*pjsua_var.ua_cfg.cb.on_reg_started)(acc_id, renew);

After that transport for RTP initialized with correct address family.

Can you please review?

--

Best regards
Alexey Vasilyev

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