Roll back change to ping more often again, ping our offline contacts every 2 mins to check if they have come back online

js/modules/loki_p2p_api.js

@@ -2,6 +2,8 @@
 
 const EventEmitter = require('events');
 
+const offlinePingTime = 2 * 60 * 1000; // 2 minutes
+
 class LokiP2pAPI extends EventEmitter {
   constructor(ourKey) {
     super();
@@ -85,6 +87,11 @@ class LokiP2pAPI extends EventEmitter {
       return;
     }
     clearTimeout(this.contactP2pDetails[pubKey].pingTimer);
+    this.contactP2pDetails[pubKey].pingTimer = setTimeout(
+      this.pingContact.bind(this),
+      offlinePingTime,
+      pubKey
+    );
     this.contactP2pDetails[pubKey].isOnline = false;
   }
 

libtextsecure/message_receiver.js

@@ -218,6 +218,9 @@ MessageReceiver.prototype.extend({
     const promise = Promise.resolve(request.body.toArrayBuffer()) // textsecure.crypto
       .then(plaintext => {
         const envelope = textsecure.protobuf.Envelope.decode(plaintext);
+        if (isP2p) {
+          lokiP2pAPI.setContactOnline(envelope.source);
+        }
         // After this point, decoding errors are not the server's
         //   fault, and we should handle them gracefully and tell the
         //   user they received an invalid message
@@ -945,9 +948,7 @@ MessageReceiver.prototype.extend({
     return this.removeFromCache(envelope);
   },
   handleDataMessage(envelope, msg) {
-    if (envelope.isP2p) {
-      lokiP2pAPI.setContactOnline(envelope.source);
-    } else {
+    if (!envelope.isP2p) {
       const timestamp = envelope.timestamp.toNumber();
       const now = Date.now();
       const ageInSeconds = (now - timestamp) / 1000;