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FS-526: improve nat handling when using stun or host as ext-rtp-ip

This commit is contained in:
Brian West 2010-09-30 10:08:20 -05:00
parent 23f71563fb
commit 03e74c51f9
1 changed files with 37 additions and 41 deletions
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78
src/mod/endpoints/mod_sofia/sofia_glue.c
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@ -872,32 +872,30 @@ switch_status_t sofia_glue_tech_choose_port(private_object_t *tech_pvt, int forc
sdp_port = tech_pvt->local_sdp_audio_port;
if (!(use_ip = switch_channel_get_variable(tech_pvt->channel, "rtp_adv_audio_ip"))
&& !zstr(tech_pvt->profile->extrtpip)) {
use_ip = tech_pvt->profile->extrtpip;
}
/* Check if NAT is detected */
if (!zstr(tech_pvt->remote_ip) && sofia_glue_check_nat(tech_pvt->profile, tech_pvt->remote_ip)) {
/* Yes, map the port through switch_nat */
switch_nat_add_mapping(tech_pvt->local_sdp_audio_port, SWITCH_NAT_UDP, &sdp_port, SWITCH_FALSE);
switch_nat_add_mapping(tech_pvt->local_sdp_audio_port + 1, SWITCH_NAT_UDP, &rtcp_port, SWITCH_FALSE);
if (use_ip) {
if (sofia_glue_ext_address_lookup(tech_pvt->profile, tech_pvt, &lookup_rtpip, &sdp_port,
use_ip, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
/* Address lookup was required and fail (external ip was "host:..." or "stun:...") */
return SWITCH_STATUS_FALSE;
} else {
if (lookup_rtpip == use_ip) {
/* sofia_glue_ext_address_lookup didn't return any error, but the return IP is the same as the original one,
which means no lookup was necessary. Check if NAT is detected */
if (!zstr(tech_pvt->remote_ip) && sofia_glue_check_nat(tech_pvt->profile, tech_pvt->remote_ip)) {
/* Yes, map the port through switch_nat */
switch_nat_add_mapping(tech_pvt->local_sdp_audio_port, SWITCH_NAT_UDP, &sdp_port, SWITCH_FALSE);
switch_nat_add_mapping(tech_pvt->local_sdp_audio_port + 1, SWITCH_NAT_UDP, &rtcp_port, SWITCH_FALSE);
} else {
/* No NAT detected */
use_ip = tech_pvt->rtpip;
}
/* Find an IP address to use */
if (!(use_ip = switch_channel_get_variable(tech_pvt->channel, "rtp_adv_audio_ip"))
&& !zstr(tech_pvt->profile->extrtpip)) {
use_ip = tech_pvt->profile->extrtpip;
}
if (use_ip) {
if (sofia_glue_ext_address_lookup(tech_pvt->profile, tech_pvt, &lookup_rtpip, &sdp_port,
use_ip, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
/* Address lookup was required and fail (external ip was "host:..." or "stun:...") */
return SWITCH_STATUS_FALSE;
} else {
/* Address properly resolved, use it as external ip */
use_ip = lookup_rtpip;
}
} else {
/* No external ip found, use the profile's rtp ip */
use_ip = tech_pvt->rtpip;
}
} else {
/* No NAT traversal required, use the profile's rtp ip */
@ -941,31 +939,29 @@ switch_status_t sofia_glue_tech_choose_video_port(private_object_t *tech_pvt, in
sdp_port = tech_pvt->local_sdp_video_port;
if (!(use_ip = switch_channel_get_variable(tech_pvt->channel, "rtp_adv_video_ip"))
&& !zstr(tech_pvt->profile->extrtpip)) {
use_ip = tech_pvt->profile->extrtpip;
}
/* Check if NAT is detected */
if (!zstr(tech_pvt->remote_ip) && sofia_glue_check_nat(tech_pvt->profile, tech_pvt->remote_ip)) {
/* Yes, map the port through switch_nat */
switch_nat_add_mapping(tech_pvt->local_sdp_video_port, SWITCH_NAT_UDP, &sdp_port, SWITCH_FALSE);
if (use_ip) {
if (sofia_glue_ext_address_lookup(tech_pvt->profile, tech_pvt, &lookup_rtpip, &sdp_port,
use_ip, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
/* Address lookup was required and fail (external ip was "host:..." or "stun:...") */
return SWITCH_STATUS_FALSE;
} else {
if (lookup_rtpip == use_ip) {
/* sofia_glue_ext_address_lookup didn't return any error, but the return IP is the same as the original one,
which means no lookup was necessary. Check if NAT is detected */
if (!zstr(tech_pvt->remote_ip) && sofia_glue_check_nat(tech_pvt->profile, tech_pvt->remote_ip)) {
/* Yes, map the port through switch_nat */
switch_nat_add_mapping(tech_pvt->local_sdp_video_port, SWITCH_NAT_UDP, &sdp_port, SWITCH_FALSE);
} else {
/* No NAT detected */
use_ip = tech_pvt->rtpip;
}
/* Find an IP address to use */
if (!(use_ip = switch_channel_get_variable(tech_pvt->channel, "rtp_adv_video_ip"))
&& !zstr(tech_pvt->profile->extrtpip)) {
use_ip = tech_pvt->profile->extrtpip;
}
if (use_ip) {
if (sofia_glue_ext_address_lookup(tech_pvt->profile, tech_pvt, &lookup_rtpip, &sdp_port,
use_ip, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
/* Address lookup was required and fail (external ip was "host:..." or "stun:...") */
return SWITCH_STATUS_FALSE;
} else {
/* Address properly resolved, use it as external ip */
use_ip = lookup_rtpip;
}
} else {
/* No external ip found, use the profile's rtp ip */
use_ip = tech_pvt->rtpip;
}
} else {
/* No NAT traversal required, use the profile's rtp ip */