From d95da5568b3f6271d853819587c056d5b74a0fa6 Mon Sep 17 00:00:00 2001
From: Daniel Kec <daniel.kec@oracle.com>
Date: Fri, 22 Nov 2024 15:51:34 +0100
Subject: [PATCH] build fix 3

Signed-off-by: Daniel Kec <daniel.kec@oracle.com>
---
 .../src/main/java/io/helidon/http/http2/WindowSizeImpl.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/http/http2/src/main/java/io/helidon/http/http2/WindowSizeImpl.java b/http/http2/src/main/java/io/helidon/http/http2/WindowSizeImpl.java
index a5debced367..0a77f422042 100644
--- a/http/http2/src/main/java/io/helidon/http/http2/WindowSizeImpl.java
+++ b/http/http2/src/main/java/io/helidon/http/http2/WindowSizeImpl.java
@@ -164,10 +164,12 @@ public void triggerUpdate() {
         @Override
         public void blockTillUpdate() {
             var startTime = System.currentTimeMillis();
+            int backoff = 50;
             while (getRemainingWindowSize() < 1) {
                 try {
                     updatedSemaphore.drainPermits();
-                    var ignored = updatedSemaphore.tryAcquire(timeoutMillis / 4, TimeUnit.MILLISECONDS);
+                    var ignored = updatedSemaphore.tryAcquire(Math.min(backoff, 5000), TimeUnit.MILLISECONDS);
+                    backoff *= 2;
                 } catch (InterruptedException e) {
                     debugLog("%s OFC STR %d: Window depleted, waiting for update interrupted.", e);
                     throw new Http2Exception(Http2ErrorCode.FLOW_CONTROL, "Flow control update wait interrupted.");