On Wed, Apr 22, 2020 at 4:24 PM Roger James <ro...@beardandsandals.co.uk> wrote:
> Hi, > > A very long time since I Iast posted on here. I have recently moved to > Asterisk 16 and have encountered a problem trying to connect via ipv6-udp > transports. Looking at the traffic it seems that Asterisk only ever queries > for DNS A records. Stepping through sip_resolve in pjsip_resolve.c I get to > line 592. The code looks like this. I apologise for the formatting. I > cannot work out how to get this mail client to do preformatted text. > > if ((type == PJSIP_TRANSPORT_UNSPECIFIED && > sip_transport_is_available(PJSIP_TRANSPORT_UDP6)) || > sip_transport_is_available(type + PJSIP_TRANSPORT_IPV6)) { > res |= sip_resolve_add(resolve, host, T_AAAA, C_IN, (type == > PJSIP_TRANSPORT_UNSPECIFIED ? PJSIP_TRANSPORT_UDP6 : type + > PJSIP_TRANSPORT_IPV6), target->addr.port); > } > At this point only a A type record query has been added. The transport > type is already set to PJSIP_TRANSPORT_UDP6. So adding PJSIP_TRANSPORT_IPV6 > to it results in a nonsense transport type. As PJSIP_TRANSPORT_IPV6 is 128 > surely it would be better if this was a bitwise OR instead of an ADD. > > What am I missing here? > You're not missing anything. There is an existing JIRA issue[1] for this. It requires an explicit transport which most people do not set, and noone has taken a fix for it through code review to inclusion as of yet. [1] https://issues.asterisk.org/jira/browse/ASTERISK-26780 -- Joshua C. Colp Asterisk Technical Lead Sangoma Technologies Check us out at www.sangoma.com and www.asterisk.org
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