add host_family to startForward (#29)

add host_family to startForward

src/plugins/audiobridge-plugin.js

@@ -724,6 +724,7 @@ class AudioBridgeHandle extends Handle {
    * @param {number|string} params.room - The involved room
    * @param {boolean} [params.always] - Whether silence should be forwarded when the room is empty
    * @param {string} params.host - The host to forward to
+   * @param {string} [params.host_family] - ipv4|ipv6; by default, first family returned by DNS request
    * @param {number} params.audio_port - The port to forward to
    * @param {number} [params.ssrc] - The SSRC to use to use when forwarding
    * @param {number} [params.ptype] - The payload type to use to use when forwarding
@@ -732,13 +733,14 @@ class AudioBridgeHandle extends Handle {
    * @param {string} [params.secret] - The optional secret needed to manage the room
    * @returns {Promise<module:audiobridge-plugin~AUDIOBRIDGE_EVENT_RTP_FWD>}
    */
-  async startForward({ room, always, host, audio_port, ssrc, ptype, codec, group, secret }) {
+  async startForward({ room, always, host, host_family, audio_port, ssrc, ptype, codec, group, secret }) {
     const body = {
       request: REQUEST_RTP_FWD_START,
       room,
     };
     if (typeof always === 'boolean') body.always_on = always;
     if (typeof host === 'string') body.host = host;
+    if (typeof host_family === 'string') body.host_family = host_family;
     if (typeof audio_port === 'number') body.port = audio_port;
     if (typeof ssrc === 'number') body.ssrc = ssrc;
     if (typeof ptype === 'number') body.ptype = ptype;
@@ -1149,4 +1151,4 @@ export default {
      */
     AUDIOBRIDGE_ERROR: PLUGIN_EVENT.ERROR,
   },
-};
+};