1 files changed, 18 insertions, 5 deletions
diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/rpc/RpcServer.java b/configserver/src/main/java/com/yahoo/vespa/config/server/rpc/RpcServer.java
index 687cb1d3cca..7993e58d06e 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/rpc/RpcServer.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/rpc/RpcServer.java
@@ -491,6 +491,7 @@ public class RpcServer implements Runnable, ReloadListener, TenantListener {
             sendParts(session, fileData);
             sendEof(session, fileData, status);
         }
+
         private void sendParts(int session, FileReferenceData fileData) {
             ByteBuffer bb = ByteBuffer.allocate(0x100000);
             for (int partId = 0, read = fileData.nextContent(bb); read >= 0; partId++, read = fileData.nextContent(bb)) {
@@ -504,12 +505,9 @@ public class RpcServer implements Runnable, ReloadListener, TenantListener {
                 bb.clear();
             }
         }
+
         private int sendMeta(FileReferenceData fileData) {
-            Request request = new Request(FileReceiver.RECEIVE_META_METHOD);
-            request.parameters().add(new StringValue(fileData.fileReference().value()));
-            request.parameters().add(new StringValue(fileData.filename()));
-            request.parameters().add(new StringValue(fileData.type().name()));
-            request.parameters().add(new Int64Value(fileData.size()));
+            Request request = createMetaRequest(fileData);
             invokeRpcIfValidConnection(request);
             if (request.isError()) {
                 log.warning("Failed delivering meta for reference '" + fileData.fileReference().value() + "' with file '" + fileData.filename() + "' to " +
@@ -522,6 +520,20 @@ public class RpcServer implements Runnable, ReloadListener, TenantListener {
                 return request.returnValues().get(1).asInt32();
             }
         }
+
+        // non-private for testing
+        static Request createMetaRequest(FileReferenceData fileData) {
+            Request request = new Request(FileReceiver.RECEIVE_META_METHOD);
+            request.parameters().add(new StringValue(fileData.fileReference().value()));
+            request.parameters().add(new StringValue(fileData.filename()));
+            request.parameters().add(new StringValue(fileData.type().name()));
+            request.parameters().add(new Int64Value(fileData.size()));
+            // Only add paramter if not gzip, this is default and old clients will not handle the extra parameter
+            if (fileData.compressionType() != CompressionType.gzip)
+                request.parameters().add(new StringValue(fileData.compressionType().name()));
+            return request;
+        }
+
         private void sendPart(int session, FileReference ref, int partId, byte [] buf) {
             Request request = new Request(FileReceiver.RECEIVE_PART_METHOD);
             request.parameters().add(new StringValue(ref.value()));
@@ -538,6 +550,7 @@ public class RpcServer implements Runnable, ReloadListener, TenantListener {
                 }
             }
         }
+
         private void sendEof(int session, FileReferenceData fileData, FileServer.ReplayStatus status) {
             Request request = new Request(FileReceiver.RECEIVE_EOF_METHOD);
             request.parameters().add(new StringValue(fileData.fileReference().value()));