1 /*
2 * Copyright 2014 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. 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, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.handler.codec.spdy;
17
18 import org.jboss.netty.buffer.ChannelBuffer;
19
20 abstract class SpdyHeaderBlockDecoder {
21
22 static SpdyHeaderBlockDecoder newInstance(SpdyVersion spdyVersion, int maxHeaderSize) {
23 return new SpdyHeaderBlockZlibDecoder(spdyVersion, maxHeaderSize);
24 }
25
26 /**
27 * Decodes a SPDY Header Block, adding the Name/Value pairs to the given Headers frame.
28 * If the header block is malformed, the Headers frame will be marked as invalid.
29 * A stream error with status code PROTOCOL_ERROR must be issued in response to an invalid frame.
30 *
31 * @param headerBlock the HeaderBlock to decode
32 * @param frame the Headers frame that receives the Name/Value pairs
33 * @throws Exception If the header block is malformed in a way that prevents any future
34 * decoding of any other header blocks, an exception will be thrown.
35 * A session error with status code PROTOCOL_ERROR must be issued.
36 */
37 abstract void decode(ChannelBuffer headerBlock, SpdyHeadersFrame frame) throws Exception;
38
39 abstract void endHeaderBlock(SpdyHeadersFrame frame) throws Exception;
40
41 abstract void end();
42 }