e24a5d8839
Motivation: This allows using handlers for Streams in normal Netty-style. Frames are read/written to the channel as messages, not directly as a callback/method call. Handlers allow mixing and can ease HTTP/1 and HTTP/2 interoperability by eventually supporting HTTP/1 handlers in HTTP/2 and vise versa. Modifications: New handler Http2MultiplexCodec that converts from the current HTTP/2 API to a message-based API and child channels for streams. Result: The basics are done for server-side: new streams trigger creation of new channels in much the same appearance to how new connections trigger new channel creation. The basic frames HEADERS and DATA are handled, but also GOAWAY and RST_STREAM. Inbound flow control is implemented, but outbound is not. That will be done later, along with not completing write promises on the child channel until the write actually completes on the parent. There is not yet support for outbound priority/weight, push promises, and many other features. There is a generic Object that may be set on stream frames. This also paves the way for client-side support which needs a way to refer to yet-to-be-created streams (due to how HEADERS allocates a stream id, and the allocation order must be the same as transmission order).
40 lines
1.2 KiB
Java
40 lines
1.2 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a 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
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.http2;
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/**
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* HTTP/2 HEADERS frame.
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*/
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public interface Http2HeadersFrame extends Http2StreamFrame {
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@Override
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Http2HeadersFrame setStream(Object stream);
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/**
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* A complete header list. CONTINUATION frames are automatically handled.
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*/
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Http2Headers headers();
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/**
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* {@code true} if this frame is the last one in this direction of the stream.
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*/
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boolean isEndStream();
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/**
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* Frame padding to use. Must be non-negative and less than 256.
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*/
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int padding();
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}
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