From a4e37a8f8232e29f89fffd6368beed6faea946a2 Mon Sep 17 00:00:00 2001
From: Sebastian Jansson <srte@webrtc.org>
Date: Fri, 4 May 2018 17:11:56 +0200
Subject: [PATCH] Adds ability to disable initial startup mode for BBR.

Bug: webrtc:8415
Change-Id: I882248999ae0125f2436dc0f9b32c4bdab1069b2
Reviewed-on: https://webrtc-review.googlesource.com/74590
Reviewed-by: Christoffer Rodbro <crodbro@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23135}
---
 modules/congestion_controller/bbr/bbr_network_controller.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/congestion_controller/bbr/bbr_network_controller.cc b/modules/congestion_controller/bbr/bbr_network_controller.cc
index 05bc049008..0a9a1f57ff 100644
--- a/modules/congestion_controller/bbr/bbr_network_controller.cc
+++ b/modules/congestion_controller/bbr/bbr_network_controller.cc
@@ -182,7 +182,11 @@ BbrNetworkController::BbrNetworkController(NetworkControllerConfig config)
     default_bandwidth_ = config.starting_bandwidth;
   constraints_ = config.constraints;
   Reset();
-  EnterStartupMode();
+  if (config_.num_startup_rtts > 0) {
+    EnterStartupMode();
+  } else {
+    EnterProbeBandwidthMode(constraints_->at_time);
+  }
 }
 
 BbrNetworkController::~BbrNetworkController() {}