Github user masaori335 commented on a diff in the pull request:
https://github.com/apache/trafficserver/pull/632#discussion_r63215167
--- Diff: proxy/http2/Http2DependencyTree.h ---
@@ -0,0 +1,296 @@
+/** @file
+
+ HTTP/2 Dependency Tree
+
+ The original idea of Stream Priority Algorithm using Weighted Fair Queue
(WFQ)
+ Scheduling is invented by Kazuho Oku (H2O project).
+
+ @section license License
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+ */
+
+#ifndef __HTTP2_DEP_TREE_H__
+#define __HTTP2_DEP_TREE_H__
+
+#include "ts/List.h"
+#include "ts/Diags.h"
+#include "ts/PriorityQueue.h"
+
+#include "HTTP2.h"
+
+// TODO: K is a constant, 256 is temporal value.
+const static int K = 256;
+
+template <typename T> class Http2DependencyTree
--- End diff --
Just for easy to test this.
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