webrtc-sfu: announce correct webrtc IP

docker-compose.tmpl.yml

@@ -177,6 +177,11 @@ services:
       - freeswitch
     environment:
       ESL_PASSWORD: ${FSESL_PASSWORD:-ClueCon}
+      {{ if .Env.EXTERNAL_IPv6 }}
+      MS_WEBRTC_LISTEN_IPS: '[{"ip":"::", "announcedIp":"{{ .Env.EXTERNAL_IPv6 }}"}, {"ip":"0.0.0.0", "announcedIp":"${EXTERNAL_IPv4}"}]'
+      {{else}}
+      MS_WEBRTC_LISTEN_IPS: '[{"ip":"0.0.0.0", "announcedIp":"${EXTERNAL_IPv4}"}]'
+      {{end}}
     volumes:
       - ./data/mediasoup:/var/mediasoup
     tmpfs:

mod/webrtc-sfu/config.yaml

@@ -26,14 +26,6 @@ mediasoup:
   workerBalancing:
     strategy: least-loaded
 
-  webrtc:
-    # announcedIP => it's the host public IPv4 in case the machine is
-    # behind a 1:1 NAT
-    # ip => the address on which mediasoup will bind its RTC sockets
-    listenIps:
-      - ip: "10.7.7.1"
-        announcedIp: "10.7.7.1"
-
   plainRtp:
     listenIp:
       ip: "0.0.0.0"