From b4a47e663c865bae6bece641f845d69410d6a325 Mon Sep 17 00:00:00 2001
From: Stephen Akridge <stephen@solana.com>
Date: Mon, 13 Aug 2018 10:07:19 -0700
Subject: [PATCH] Cap repair requests timeout

---
 src/window.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/window.rs b/src/window.rs
index fbf5f0d837400e..0cc51e0d01fcb2 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -108,6 +108,14 @@ fn repair_window(
     }
     *last = consumed;
     *times += 1;
+
+    // Experiment with capping repair request duration.
+    // Once nodes are too far behind they can spend many
+    // seconds without asking for repair
+    if *times > 128 {
+        *times = 65;
+    }
+
     //if times flips from all 1s 7 -> 8, 15 -> 16, we retry otherwise return Ok
     if *times & (*times - 1) != 0 {
         trace!("repair_window counter {} {} {}", *times, consumed, received);