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res_pjsip: Add support for dnsmgr to external_media_address.

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The "external_media_address" option on transports is now
resolved using dnsmgr. This allows it to be automatically
refreshed regularly if refreshes are enabled in dnsmgr.
If the system is using a dynamic IP address a dynamic DNS
hostname can be provided to keep the IP address up to
date.

Change-Id: Ia54771720dff0105bde55d5bbb81a3ba437e05b2
This commit is contained in:
Joshua Colp
2017-07-23 23:34:32 +00:00
committed by George Joseph
parent 58d032112b
commit 2a4283f3e7
7 changed files with 62 additions and 22 deletions
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6
res/res_pjsip_nat.c
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@@ -273,10 +273,10 @@ static pj_status_t nat_on_tx_message(pjsip_tx_data *tdata)
}
}
if (!ast_sockaddr_isnull(&transport_state->external_address)) {
if (!ast_sockaddr_isnull(&transport_state->external_signaling_address)) {
/* Update the contact header with the external address */
if (uri || (uri = nat_get_contact_sip_uri(tdata))) {
pj_strdup2(tdata->pool, &uri->host, ast_sockaddr_stringify_host(&transport_state->external_address));
pj_strdup2(tdata->pool, &uri->host, ast_sockaddr_stringify_host(&transport_state->external_signaling_address));
if (transport->external_signaling_port) {
uri->port = transport->external_signaling_port;
ast_debug(4, "Re-wrote Contact URI port to %d\n", uri->port);
@@ -285,7 +285,7 @@ static pj_status_t nat_on_tx_message(pjsip_tx_data *tdata)
/* Update the via header if relevant */
if ((tdata->msg->type == PJSIP_REQUEST_MSG) && (via || (via = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_VIA, NULL)))) {
pj_strdup2(tdata->pool, &via->sent_by.host, ast_sockaddr_stringify_host(&transport_state->external_address));
pj_strdup2(tdata->pool, &via->sent_by.host, ast_sockaddr_stringify_host(&transport_state->external_signaling_address));
if (transport->external_signaling_port) {
via->sent_by.port = transport->external_signaling_port;
}