license dep and copyright

Author: stephen-derosa

.github/workflows/license_check.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Check License Headers
         shell: bash
         run: |
-          shopt -s globstar
+          shopt -s globstar nullglob
           # ghcr.io/google/addlicense v1.2.0
           docker run --rm -v ${PWD}:/src -w /src ghcr.io/google/addlicense@sha256:5a48f41ccc8cf3fdd04499649f02a9ee5877ab6f39fd1ac18fd1db5eb1062c5a \
             -check \

simple_data_stream/main.cpp

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2026 LiveKit, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 #include <atomic>
 #include <csignal>
 #include <cstdlib>