[BUG] fix MainResponse to spoof version number for legacy clients (#708)

This commit changes MainResponse to spoof OpenSearch 1.x version numbers as Legacy version number 7.10.2 for legacy clients. Signed-off-by: Nicholas Walter Knize <[email protected]>
opensearch-project · May 28, 2021 · 403c511 · 403c511
1 parent 053ed7b
commit 403c511
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/server/src/main/java/org/opensearch/action/main/MainResponse.java b/server/src/main/java/org/opensearch/action/main/MainResponse.java
@@ -102,7 +102,11 @@ public Build getBuild() {
     @Override
     public void writeTo(StreamOutput out) throws IOException {
         out.writeString(nodeName);
-        Version.writeVersion(version, out);
+        if (out.getVersion().before(Version.V_1_0_0)) {
+            Version.writeVersion(LegacyESVersion.V_7_10_2, out);
+        } else {
+            Version.writeVersion(version, out);
+        }
         clusterName.writeTo(out);
         out.writeString(clusterUuid);
         Build.writeBuild(build, out);