[Backport 3.5] Harden detection of HTTP/3 support by ensuring Quic native libraries are available for the target platform

CHANGELOG.md

@@ -58,6 +58,19 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix the node local term and version being truncated in logs when host providers return very long IP or host strings ([20432](https://github.com/opensearch-project/OpenSearch/pull/20432))
 - Remove child level directory on refresh for CompositeIndexWriter ([#20326](https://github.com/opensearch-project/OpenSearch/pull/20326))
 - Fixes and refactoring in stream transport to make it more robust ([#20359](https://github.com/opensearch-project/OpenSearch/pull/20359))
+- Fix flaky test failures in ShardsLimitAllocationDeciderIT ([#20375](https://github.com/opensearch-project/OpenSearch/pull/20375))
+- Prevent criteria update for context aware indices ([#20250](https://github.com/opensearch-project/OpenSearch/pull/20250))
+- Update EncryptedBlobContainer to adhere limits while listing blobs in specific sort order if wrapped blob container supports ([#20514](https://github.com/opensearch-project/OpenSearch/pull/20514))
+- [segment replication] Fix segment replication infinite retry due to stale metadata checkpoint ([#20551](https://github.com/opensearch-project/OpenSearch/pull/20551))
+- Changing opensearch.cgroups.hierarchy.override causes java.lang.SecurityException exception ([#20565](https://github.com/opensearch-project/OpenSearch/pull/20565))
+- Fix CriteriaBasedCodec to work with delegate codec. ([#20442](https://github.com/opensearch-project/OpenSearch/pull/20442))
+- Fix WLM workload group creation failing due to updated_at clock skew ([#20486](https://github.com/opensearch-project/OpenSearch/pull/20486))
+- Fix SLF4J component error ([#20587](https://github.com/opensearch-project/OpenSearch/pull/20587))
+- Service does not start on Windows with OpenJDK ([#20615](https://github.com/opensearch-project/OpenSearch/pull/20615))
+- Update RemoteClusterStateCleanupManager to performed batched deletions of stale ClusterMetadataManifests and address deletion timeout issues ([#20566](https://github.com/opensearch-project/OpenSearch/pull/20566))
+- Fix the regression of terms agg optimization at high cardinality ([#20623](https://github.com/opensearch-project/OpenSearch/pull/20623))
+- Support Docker distribution builds for ppc64le, arm64 and s390x ([#20678](https://github.com/opensearch-project/OpenSearch/pull/20678))
+- Harden detection of HTTP/3 support by ensuring Quic native libraries are available for the target platform ([#20680](https://github.com/opensearch-project/OpenSearch/pull/20680))
 
 ### Dependencies
 - Bump `com.google.auth:google-auth-library-oauth2-http` from 1.38.0 to 1.41.0 ([#20183](https://github.com/opensearch-project/OpenSearch/pull/20183))

libs/netty4/src/main/java/org/opensearch/http/netty4/http3/Http3Utils.java

@@ -8,6 +8,8 @@
 
 package org.opensearch.http.netty4.http3;
 
+import io.netty.handler.codec.quic.Quic;
+
 /**
  * Adapted from reactor.netty.http.internal.Http3 class
  */
@@ -22,7 +24,10 @@ public final class Http3Utils {
         } catch (Throwable t) {
             http3 = false;
         }
-        isHttp3Available = http3;
+        // Quic codec (which is used by HTTP/3 implementation) is provided by the
+        // native library and may not be available on all platforms (even if HTTP/3
+        // codec is present).
+        isHttp3Available = http3 && Quic.isAvailable();
     }
 
     private Http3Utils() {