add content-length to multipart query responses (#13800)

1 files changed, 1 insertions, 1 deletions

diff --git a/ydb/core/viewer/viewer_query.h b/ydb/core/viewer/viewer_query.h
index d94ed998c55..4c1f1adf0d9 100644
--- a/ydb/core/viewer/viewer_query.h
+++ b/ydb/core/viewer/viewer_query.h
@@ -822,7 +822,7 @@ private:
             .WriteNanAsString = true,
         });
         TStringBuilder data;
-        data << "--boundary\r\nContent-Type: application/json\r\n\r\n" << content.Str() << "\r\n";
+        data << "--boundary\r\nContent-Type: application/json\r\nContent-Length: " << content.Size() << "\r\n\r\n" << content.Str() << "\r\n";
         auto dataChunk = HttpResponse->CreateDataChunk(data);
         Send(HttpEvent->Sender, new NHttp::TEvHttpProxy::TEvHttpOutgoingDataChunk(dataChunk));
     }