From ce1fc4baa9f7863020d6c5f5c3103d78bd9c41f5 Mon Sep 17 00:00:00 2001
From: Atlante45 <clement.brisset@gmail.com>
Date: Wed, 29 Jul 2015 16:24:58 -0700
Subject: [PATCH] Send light acks based on CC member

---
 libraries/networking/src/udt/CongestionControl.h | 1 +
 libraries/networking/src/udt/Connection.cpp      | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/libraries/networking/src/udt/CongestionControl.h b/libraries/networking/src/udt/CongestionControl.h
index 75590d88b5..f8f4860a89 100644
--- a/libraries/networking/src/udt/CongestionControl.h
+++ b/libraries/networking/src/udt/CongestionControl.h
@@ -68,6 +68,7 @@ private:
     CongestionControl& operator=(const CongestionControl& other) = delete;
     
     int _ackInterval { 0 }; // How many packets to send one ACK, in packets
+    int _lightACKInterval { 64 }; // How many packets to send one light ACK, in packets
     
     int _synInterval { DEFAULT_SYN_INTERVAL };
     
diff --git a/libraries/networking/src/udt/Connection.cpp b/libraries/networking/src/udt/Connection.cpp
index 935622f4d8..2051ca9627 100644
--- a/libraries/networking/src/udt/Connection.cpp
+++ b/libraries/networking/src/udt/Connection.cpp
@@ -282,6 +282,8 @@ void Connection::processReceivedSequenceNumber(SequenceNumber seq) {
     // check if we need to send an ACK, according to CC params
     if (_congestionControl->_ackInterval > 0 && _packetsSinceACK >= _congestionControl->_ackInterval) {
         sendACK(false);
+    } else if (_congestionControl->_lightACKInterval > 0 && _packetsSinceACK >= _congestionControl->_lightACKInterval) {
+        sendLightACK();
     }
 }