From c17bb1f1e8b700bcf0765d181a496ab837853609 Mon Sep 17 00:00:00 2001
From: Hoan HL <hoan.h.luu@drachtio.org>
Date: Fri, 24 Oct 2025 11:57:25 +0700
Subject: [PATCH] send stream_empty when tts streaming has nothing to play

---
 lib/session/call-session.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/session/call-session.js b/lib/session/call-session.js
index ee7b9f66..3fd5a50e 100644
--- a/lib/session/call-session.js
+++ b/lib/session/call-session.js
@@ -3095,6 +3095,9 @@ Duration=${duration} `
   }
 
   _onTtsStreamingEmpty() {
+    this.requestor?.request('tts:streaming-event', '/streaming-event', {event_type: 'stream_empty'})
+      .catch((err) => this.logger.info({err}, 'CallSession:_onTtsStreamingEmpty - Error sending'));
+
     const task = this.currentTask;
     if (task && TaskName.Say === task.name) {
       task.notifyTtsStreamIsEmpty();