SpdyCodecUtil.java — netty Source File

Source Code

/*
 * Copyright 2013 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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.
 */
package io.netty.handler.codec.spdy;

import static io.netty.util.internal.ObjectUtil.checkNonEmpty;
import static io.netty.util.internal.ObjectUtil.checkNotNull;

import io.netty.buffer.ByteBuf;

final class SpdyCodecUtil {

    static final int SPDY_SESSION_STREAM_ID = 0;

    static final int SPDY_HEADER_TYPE_OFFSET   = 2;
    static final int SPDY_HEADER_FLAGS_OFFSET  = 4;
    static final int SPDY_HEADER_LENGTH_OFFSET = 5;
    static final int SPDY_HEADER_SIZE          = 8;

    static final int SPDY_MAX_LENGTH = 0xFFFFFF; // Length is a 24-bit field

    static final byte SPDY_DATA_FLAG_FIN = 0x01;

    static final int SPDY_DATA_FRAME          = 0;
    static final int SPDY_SYN_STREAM_FRAME    = 1;
    static final int SPDY_SYN_REPLY_FRAME     = 2;
    static final int SPDY_RST_STREAM_FRAME    = 3;
    static final int SPDY_SETTINGS_FRAME      = 4;
    static final int SPDY_PUSH_PROMISE_FRAME  = 5;
    static final int SPDY_PING_FRAME          = 6;
    static final int SPDY_GOAWAY_FRAME        = 7;
    static final int SPDY_HEADERS_FRAME       = 8;
    static final int SPDY_WINDOW_UPDATE_FRAME = 9;

    static final byte SPDY_FLAG_FIN            = 0x01;
    static final byte SPDY_FLAG_UNIDIRECTIONAL = 0x02;

    static final byte SPDY_SETTINGS_CLEAR         = 0x01;
    static final byte SPDY_SETTINGS_PERSIST_VALUE = 0x01;
    static final byte SPDY_SETTINGS_PERSISTED     = 0x02;

    static final int SPDY_SETTINGS_MAX_ID = 0xFFFFFF; // ID is a 24-bit field

    static final int SPDY_MAX_NV_LENGTH = 0xFFFF; // Length is a 16-bit field

    // Zlib Dictionary
    static final byte[] SPDY_DICT = {
        0x00, 0x00, 0x00, 0x07, 0x6f, 0x70, 0x74, 0x69,   // - - - - o p t i
// ... (269 more lines)