2015-03-17 05:24:24 +01:00
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/*
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* Copyright 2015 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License, version 2.0 (the
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* "License"); you may not use this file except in compliance with the License. You may obtain a
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* copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License
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* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing permissions and limitations under
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* the License.
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*/
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package io.netty.handler.codec.http2;
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import io.netty.channel.ChannelHandlerContext;
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2016-04-12 14:22:41 +02:00
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import io.netty.util.internal.UnstableApi;
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2015-03-17 05:24:24 +01:00
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/**
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* Provides an extensibility point for users to define the validity of push requests.
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* @see <a href="https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-8.2">[RFC http2], Section 8.2</a>.
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*/
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2016-04-12 14:22:41 +02:00
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@UnstableApi
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2015-03-17 05:24:24 +01:00
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public interface Http2PromisedRequestVerifier {
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/**
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* Determine if a {@link Http2Headers} are authoritative for a particular {@link ChannelHandlerContext}.
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* @param ctx The context on which the {@code headers} where received on.
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* @param headers The headers to be verified.
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* @return {@code true} if the {@code ctx} is authoritative for the {@code headers}, {@code false} otherwise.
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* @see
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* <a href="https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-10.1">[RFC http2], Section 10.1</a>.
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*/
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boolean isAuthoritative(ChannelHandlerContext ctx, Http2Headers headers);
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/**
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* Determine if a request is cacheable.
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* @param headers The headers for a push request.
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* @return {@code true} if the request associated with {@code headers} is known to be cacheable,
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* {@code false} otherwise.
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* @see <a href="https://tools.ietf.org/html/rfc7231#section-4.2.3">[RFC 7231], Section 4.2.3</a>.
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*/
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boolean isCacheable(Http2Headers headers);
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/**
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* Determine if a request is safe.
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* @param headers The headers for a push request.
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* @return {@code true} if the request associated with {@code headers} is known to be safe,
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* {@code false} otherwise.
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* @see <a href="https://tools.ietf.org/html/rfc7231#section-4.2.1">[RFC 7231], Section 4.2.1</a>.
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*/
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boolean isSafe(Http2Headers headers);
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/**
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* A default implementation of {@link Http2PromisedRequestVerifier} which always returns positive responses for
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* all verification challenges.
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*/
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Http2PromisedRequestVerifier ALWAYS_VERIFY = new Http2PromisedRequestVerifier() {
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@Override
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public boolean isAuthoritative(ChannelHandlerContext ctx, Http2Headers headers) {
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return true;
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}
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@Override
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public boolean isCacheable(Http2Headers headers) {
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return true;
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}
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@Override
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public boolean isSafe(Http2Headers headers) {
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return true;
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}
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};
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}
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