From c6a170b71bdebaf542a0456fe43dd71694f684bf Mon Sep 17 00:00:00 2001
From: hai007 <hais@google.com>
Date: Mon, 19 Jul 2021 09:38:17 -0700
Subject: [PATCH] Internal change

PiperOrigin-RevId: 385574533
---
 proto/mediums/ble_frames.proto | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/proto/mediums/ble_frames.proto b/proto/mediums/ble_frames.proto
index 864da316..d2c9d8af 100644
--- a/proto/mediums/ble_frames.proto
+++ b/proto/mediums/ble_frames.proto
@@ -34,6 +34,7 @@ message SocketControlFrame {
     UNKNOWN_CONTROL_FRAME_TYPE = 0;
     INTRODUCTION = 1;
     DISCONNECTION = 2;
+    PACKET_ACKNOWLEDGEMENT = 3;
   }
 
   optional ControlFrameType type = 1;
@@ -41,6 +42,7 @@ message SocketControlFrame {
   // Exactly one of the following fields will be set.
   optional IntroductionFrame introduction = 2;
   optional DisconnectionFrame disconnection = 3;
+  optional PacketAcknowledgementFrame packet_acknowledgement = 4;
 }
 
 message IntroductionFrame {
@@ -51,3 +53,8 @@ message IntroductionFrame {
 message DisconnectionFrame {
   optional bytes service_id_hash = 1;
 }
+
+message PacketAcknowledgementFrame {
+  optional bytes service_id_hash = 1;
+  optional int32 received_size = 2;
+}