Hi, when performing an attended transfer, when the transfer destination sends a
407 to the INVITE with replaces generated by transferee, a NOTIFY with 503
sipfrag is sent to the transferrer. Code is here in nua_session.c
in function nh_referral_respond. The transfer destination is in different
domain. The resulting NOTIFY 503 sent to the transferrer makes him think the
transfer has failed rather than just being in progress. Is there some reason
for this or is it a bug?
if (status >= 300)
status = 503, phrase = sip_503_Service_unavailable;
snprintf(payload, sizeof(payload), "SIP/2.0 %03u %s\r\n", status, phrase);
if (status < 200)
substate = "active";
else
substate = "terminated ;reason=noresource";
nua_stack_post_signal(ref->ref_handle,
nua_r_notify,
SIPTAG_EVENT(ref->ref_event),
SIPTAG_SUBSCRIPTION_STATE_STR(substate),
SIPTAG_CONTENT_TYPE_STR("message/sipfrag"),
SIPTAG_PAYLOAD_STR(payload),
TAG_END());
Regards
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