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res_pjsip/pjsip_message_filter: set preferred transport in pjsip_message_filter 

Set preferred transport when querying the local address to use in
filter_on_tx_messages(). This prevents the module to erroneously select
the wrong transport if more than one transports of the same type (TCP or
TLS) are configured.

ASTERISK-29241

Change-Id: I598e60257a7f92b29efce1fb3e9a2fc06f1439b6
This commit is contained in:
Bernd Zobl 2021-03-16 17:45:23 +01:00 committed by Friendly Automation
parent 2b174a38fe
commit 804788037e
1 changed files with 8 additions and 0 deletions
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8
res/res_pjsip/pjsip_message_filter.c
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@ -230,6 +230,7 @@ static pj_status_t filter_on_tx_message(pjsip_tx_data *tdata)
pjsip_cseq_hdr *cseq;
pjsip_via_hdr *via;
pjsip_fromto_hdr *from;
pjsip_tpselector sel;
sanitize_tdata(tdata);
@ -239,6 +240,13 @@ static pj_status_t filter_on_tx_message(pjsip_tx_data *tdata)
pj_strset2(&prm.dst_host, tdata->tp_info.dst_name);
prm.local_if = PJ_TRUE;
if ((tdata->tp_info.transport->key.type != PJSIP_TRANSPORT_UDP) &&
(tdata->tp_info.transport->key.type != PJSIP_TRANSPORT_UDP6)) {
sel.type = PJSIP_TPSELECTOR_LISTENER;
sel.u.listener = tdata->tp_info.transport->factory;
prm.tp_sel = &sel;
}
/* If we can't get the local address use best effort and let it pass */
if (pjsip_tpmgr_find_local_addr2(pjsip_endpt_get_tpmgr(ast_sip_get_pjsip_endpoint()), tdata->pool, &prm) != PJ_SUCCESS) {
return PJ_SUCCESS;