1 /*
2 * Copyright (c) 2012 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.eclipse.jetty.spdy.http;
18
19 import java.util.Collections;
20 import java.util.Set;
21
22 import org.eclipse.jetty.spdy.api.Headers;
23 import org.eclipse.jetty.spdy.api.Stream;
24
25 /**
26 *
27 */
28 public interface PushStrategy
29 {
30 public Set<String> apply(Stream stream, Headers requestHeaders, Headers responseHeaders);
31
32 public static class None implements PushStrategy
33 {
34 @Override
35 public Set<String> apply(Stream stream, Headers requestHeaders, Headers responseHeaders)
36 {
37 return Collections.emptySet();
38 }
39 }
40 }