rest:dial support timeLimit (#1024)

* rest:dial support timeLimit

* wip

* wip

* clear maxCallDuration timer

lib/session/call-session.js

@@ -1172,6 +1172,11 @@ class CallSession extends Emitter {
       this.wakeupResolver({reason: 'session ended'});
       this.wakeupResolver = null;
     }
+
+    if (this._maxCallDurationTimer) {
+      clearTimeout(this._maxCallDurationTimer);
+      this._maxCallDurationTimer = null;
+    }
   }
 
   /**
@@ -2680,6 +2685,27 @@ Duration=${duration} `
       this.verbHookSpan = null;
     }
   }
+  }
+
+  async startMaxCallDurationTimer(timeLimit) {
+    if (!this._maxCallDurationTimer && timeLimit > 0) {
+      this.timeLimit = timeLimit;
+      this._maxCallDurationTimer = setTimeout(this._onMaxCallDuration.bind(this), timeLimit * 1000);
+      this.logger.debug(`CallSession:startMaxCallDurationTimer - started max call duration timer for ${timeLimit}s`);
+    }
+  }
+
+  /**
+   * _onMaxCallDuration - called when the call has reached the maximum duration
+   */
+  _onMaxCallDuration() {
+    this.logger.info(`callSession:_onMaxCallDuration tearing down call as it has reached ${this.timeLimit}s`);
+    if (!this.dlg) {
+      this.logger.debug('CallSession:_onMaxCallDuration - no dialog, call already gone');
+      return;
+    }
+    this._jambonzHangup('Max Call Duration');
+    this._maxCallDurationTimer = null;
 }
 
 module.exports = CallSession;

lib/tasks/rest_dial.js

@@ -12,6 +12,7 @@ class TaskRestDial extends Task {
 
     this.from = this.data.from;
     this.callerName = this.data.callerName;
+    this.timeLimit = this.data.timeLimit;
     this.fromHost = this.data.fromHost;
     this.to = this.data.to;
     this.call_hook = this.data.call_hook;
@@ -66,6 +67,9 @@ class TaskRestDial extends Task {
     const cs = this.callSession;
     cs.setDialog(dlg);
     cs.referHook = this.referHook;
+    if (this.timeLimit) {
+      cs.startMaxCallDurationTimer(this.timeLimit);
+    }
     this.logger.debug('TaskRestDial:_onConnect - call connected');
     if (this.sipRequestWithinDialogHook) this._initSipRequestWithinDialogHandler(cs, dlg);
     try {