Feature/rtpengine locate by dns (#28)

* k8s: query dns for rtpengine endpoints

* use udp now in k8s

* catch error on rtpengine failure

lib/call-session.js

@@ -372,7 +372,8 @@ class CallSession extends Emitter {
             debug(`got final outdial error: ${err}`);
             if (!passFailure) this.res.send(status);
             this.emit('failed');
-            this.rtpEngineResource.destroy();
+            this.rtpEngineResource.destroy()
+              .catch((err) => this.logger.info({err}, 'Error destroying rtpe after failure'));
             const tags = ['accepted:no', `sipStatus:${status}`];
             this.stats.increment('sbc.originations', tags);
 

lib/utils.js

@@ -73,9 +73,21 @@ const pingMsTeamsGateways = (logger, srf) => {
 
 const makeCallCountKey = (sid) => `${sid}:outcalls`;
 
+const equalsIgnoreOrder = (a, b) => {
+  if (a.length !== b.length) return false;
+  const uniqueValues = new Set([...a, ...b]);
+  for (const v of uniqueValues) {
+    const aCount = a.filter((e) => e === v).length;
+    const bCount = b.filter((e) => e === v).length;
+    if (aCount !== bCount) return false;
+  }
+  return true;
+};
+
 module.exports = {
   makeRtpEngineOpts,
   selectHostPort,
   pingMsTeamsGateways,
-  makeCallCountKey
+  makeCallCountKey,
+  equalsIgnoreOrder
 };