Reacts to consecutive ping failures by closing the connection.

(cherry picked from commit 9a77ddc)

modules/xmpp/strophe.ping.js

 
 var XMPPEvents = require("../../service/xmpp/XMPPEvents");
 
-var PING_INTERVAL = 15000;
+/**
+ * Ping every 20 sec
+ */
+var PING_INTERVAL = 20000;
+
+/**
+ * Ping timeout error after 15 sec of waiting.
+ */
+var PING_TIMEOUT = 15000;
 
-var PING_TIMEOUT = 10000;
+/**
+ * Will close the connection after 3 consecutive ping errors.
+ */
+var PING_THRESHOLD = 3;
 
 /**
  * XEP-0199 ping plugin.
  *
  * Registers "urn:xmpp:ping" namespace under Strophe.NS.PING.
  */
-module.exports = function () {
+module.exports = function (XMPP, eventEmitter) {
     Strophe.addConnectionPlugin('ping', {
 
         connection: null,
 
+        failedPings: 0,
+
         /**
          * Initializes the plugin. Method called by Strophe.
          * @param connection Strophe connection instance.
                 self.ping(remoteJid,
                 function (result) {
                     // Ping OK
+                    self.failedPings = 0;
                 },
                 function (error) {
+                    self.failedPings += 1;
                     console.error(
                         "Ping " + (error ? "error" : "timeout"), error);
-                    //FIXME: react
+                    if (self.failedPings >= PING_THRESHOLD) {
+                        self.connection.disconnect();
+                    }
                 }, PING_TIMEOUT);
             }, interval);
             console.info("XMPP pings will be sent every " + interval + " ms");
             if (this.intervalId) {
                 window.clearInterval(this.intervalId);
                 this.intervalId = null;
+                this.failedPings = 0;
                 console.info("Ping interval cleared");
             }
         }

modules/xmpp/xmpp.js

     require("./strophe.jingle")(XMPP, XMPP.eventEmitter);
 //    require("./strophe.moderate")(XMPP, eventEmitter);
     require("./strophe.util")();
-    require("./strophe.ping")();
+    require("./strophe.ping")(XMPP, XMPP.eventEmitter);
     require("./strophe.rayo")();
     require("./strophe.logger")();
 }