/*
 * nghttp2 - HTTP/2.0 C Library
 *
 * Copyright (c) 2012 Tatsuhiro Tsujikawa
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include "nghttp2_zlib.h"

#include <assert.h>

#define COMPRESSION_LEVEL 9
#define WINDOW_BITS 11
#define MEM_LEVEL 1

static const char spdy2_hd_dict[] =
  "optionsgetheadpostputdeletetraceacceptaccept-charsetaccept-encodingaccept-"
  "languageauthorizationexpectfromhostif-modified-sinceif-matchif-none-matchi"
  "f-rangeif-unmodifiedsincemax-forwardsproxy-authorizationrangerefererteuser"
  "-agent10010120020120220320420520630030130230330430530630740040140240340440"
  "5406407408409410411412413414415416417500501502503504505accept-rangesageeta"
  "glocationproxy-authenticatepublicretry-afterservervarywarningwww-authentic"
  "ateallowcontent-basecontent-encodingcache-controlconnectiondatetrailertran"
  "sfer-encodingupgradeviawarningcontent-languagecontent-lengthcontent-locati"
  "oncontent-md5content-rangecontent-typeetagexpireslast-modifiedset-cookieMo"
  "ndayTuesdayWednesdayThursdayFridaySaturdaySundayJanFebMarAprMayJunJulAugSe"
  "pOctNovDecchunkedtext/htmlimage/pngimage/jpgimage/gifapplication/xmlapplic"
  "ation/xhtmltext/plainpublicmax-agecharset=iso-8859-1utf-8gzipdeflateHTTP/1"
  ".1statusversionurl";

static const uint8_t spdy3_hd_dict[] = {
  0x00, 0x00, 0x00, 0x07, 0x6f, 0x70, 0x74, 0x69,   /*  - - - - o p t i */
  0x6f, 0x6e, 0x73, 0x00, 0x00, 0x00, 0x04, 0x68,   /*  o n s - - - - h */
  0x65, 0x61, 0x64, 0x00, 0x00, 0x00, 0x04, 0x70,   /*  e a d - - - - p */
  0x6f, 0x73, 0x74, 0x00, 0x00, 0x00, 0x03, 0x70,   /*  o s t - - - - p */
  0x75, 0x74, 0x00, 0x00, 0x00, 0x06, 0x64, 0x65,   /*  u t - - - - d e */
  0x6c, 0x65, 0x74, 0x65, 0x00, 0x00, 0x00, 0x05,   /*  l e t e - - - - */
  0x74, 0x72, 0x61, 0x63, 0x65, 0x00, 0x00, 0x00,   /*  t r a c e - - - */
  0x06, 0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x00,   /*  - a c c e p t - */
  0x00, 0x00, 0x0e, 0x61, 0x63, 0x63, 0x65, 0x70,   /*  - - - a c c e p */
  0x74, 0x2d, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65,   /*  t - c h a r s e */
  0x74, 0x00, 0x00, 0x00, 0x0f, 0x61, 0x63, 0x63,   /*  t - - - - a c c */
  0x65, 0x70, 0x74, 0x2d, 0x65, 0x6e, 0x63, 0x6f,   /*  e p t - e n c o */
  0x64, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x0f,   /*  d i n g - - - - */
  0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x6c,   /*  a c c e p t - l */
  0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x00,   /*  a n g u a g e - */
  0x00, 0x00, 0x0d, 0x61, 0x63, 0x63, 0x65, 0x70,   /*  - - - a c c e p */
  0x74, 0x2d, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x73,   /*  t - r a n g e s */
  0x00, 0x00, 0x00, 0x03, 0x61, 0x67, 0x65, 0x00,   /*  - - - - a g e - */
  0x00, 0x00, 0x05, 0x61, 0x6c, 0x6c, 0x6f, 0x77,   /*  - - - a l l o w */
  0x00, 0x00, 0x00, 0x0d, 0x61, 0x75, 0x74, 0x68,   /*  - - - - a u t h */
  0x6f, 0x72, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f,   /*  o r i z a t i o */
  0x6e, 0x00, 0x00, 0x00, 0x0d, 0x63, 0x61, 0x63,   /*  n - - - - c a c */
  0x68, 0x65, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72,   /*  h e - c o n t r */
  0x6f, 0x6c, 0x00, 0x00, 0x00, 0x0a, 0x63, 0x6f,   /*  o l - - - - c o */
  0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e,   /*  n n e c t i o n */
  0x00, 0x00, 0x00, 0x0c, 0x63, 0x6f, 0x6e, 0x74,   /*  - - - - c o n t */
  0x65, 0x6e, 0x74, 0x2d, 0x62, 0x61, 0x73, 0x65,   /*  e n t - b a s e */
  0x00, 0x00, 0x00, 0x10, 0x63, 0x6f, 0x6e, 0x74,   /*  - - - - c o n t */
  0x65, 0x6e, 0x74, 0x2d, 0x65, 0x6e, 0x63, 0x6f,   /*  e n t - e n c o */
  0x64, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x10,   /*  d i n g - - - - */
  0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d,   /*  c o n t e n t - */
  0x6c, 0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65,   /*  l a n g u a g e */
  0x00, 0x00, 0x00, 0x0e, 0x63, 0x6f, 0x6e, 0x74,   /*  - - - - c o n t */
  0x65, 0x6e, 0x74, 0x2d, 0x6c, 0x65, 0x6e, 0x67,   /*  e n t - l e n g */
  0x74, 0x68, 0x00, 0x00, 0x00, 0x10, 0x63, 0x6f,   /*  t h - - - - c o */
  0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x6c, 0x6f,   /*  n t e n t - l o */
  0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00,   /*  c a t i o n - - */
  0x00, 0x0b, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e,   /*  - - c o n t e n */
  0x74, 0x2d, 0x6d, 0x64, 0x35, 0x00, 0x00, 0x00,   /*  t - m d 5 - - - */
  0x0d, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74,   /*  - c o n t e n t */
  0x2d, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x00, 0x00,   /*  - r a n g e - - */
  0x00, 0x0c, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e,   /*  - - c o n t e n */
  0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x00, 0x00,   /*  t - t y p e - - */
  0x00, 0x04, 0x64, 0x61, 0x74, 0x65, 0x00, 0x00,   /*  - - d a t e - - */
  0x00, 0x04, 0x65, 0x74, 0x61, 0x67, 0x00, 0x00,   /*  - - e t a g - - */
  0x00, 0x06, 0x65, 0x78, 0x70, 0x65, 0x63, 0x74,   /*  - - e x p e c t */
  0x00, 0x00, 0x00, 0x07, 0x65, 0x78, 0x70, 0x69,   /*  - - - - e x p i */
  0x72, 0x65, 0x73, 0x00, 0x00, 0x00, 0x04, 0x66,   /*  r e s - - - - f */
  0x72, 0x6f, 0x6d, 0x00, 0x00, 0x00, 0x04, 0x68,   /*  r o m - - - - h */
  0x6f, 0x73, 0x74, 0x00, 0x00, 0x00, 0x08, 0x69,   /*  o s t - - - - i */
  0x66, 0x2d, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x00,   /*  f - m a t c h - */
  0x00, 0x00, 0x11, 0x69, 0x66, 0x2d, 0x6d, 0x6f,   /*  - - - i f - m o */
  0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x2d, 0x73,   /*  d i f i e d - s */
  0x69, 0x6e, 0x63, 0x65, 0x00, 0x00, 0x00, 0x0d,   /*  i n c e - - - - */
  0x69, 0x66, 0x2d, 0x6e, 0x6f, 0x6e, 0x65, 0x2d,   /*  i f - n o n e - */
  0x6d, 0x61, 0x74, 0x63, 0x68, 0x00, 0x00, 0x00,   /*  m a t c h - - - */
  0x08, 0x69, 0x66, 0x2d, 0x72, 0x61, 0x6e, 0x67,   /*  - i f - r a n g */
  0x65, 0x00, 0x00, 0x00, 0x13, 0x69, 0x66, 0x2d,   /*  e - - - - i f - */
  0x75, 0x6e, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69,   /*  u n m o d i f i */
  0x65, 0x64, 0x2d, 0x73, 0x69, 0x6e, 0x63, 0x65,   /*  e d - s i n c e */
  0x00, 0x00, 0x00, 0x0d, 0x6c, 0x61, 0x73, 0x74,   /*  - - - - l a s t */
  0x2d, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65,   /*  - m o d i f i e */
  0x64, 0x00, 0x00, 0x00, 0x08, 0x6c, 0x6f, 0x63,   /*  d - - - - l o c */
  0x61, 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, 0x00,   /*  a t i o n - - - */
  0x0c, 0x6d, 0x61, 0x78, 0x2d, 0x66, 0x6f, 0x72,   /*  - m a x - f o r */
  0x77, 0x61, 0x72, 0x64, 0x73, 0x00, 0x00, 0x00,   /*  w a r d s - - - */
  0x06, 0x70, 0x72, 0x61, 0x67, 0x6d, 0x61, 0x00,   /*  - p r a g m a - */
  0x00, 0x00, 0x12, 0x70, 0x72, 0x6f, 0x78, 0x79,   /*  - - - p r o x y */
  0x2d, 0x61, 0x75, 0x74, 0x68, 0x65, 0x6e, 0x74,   /*  - a u t h e n t */
  0x69, 0x63, 0x61, 0x74, 0x65, 0x00, 0x00, 0x00,   /*  i c a t e - - - */
  0x13, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2d, 0x61,   /*  - p r o x y - a */
  0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x61,   /*  u t h o r i z a */
  0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, 0x00, 0x05,   /*  t i o n - - - - */
  0x72, 0x61, 0x6e, 0x67, 0x65, 0x00, 0x00, 0x00,   /*  r a n g e - - - */
  0x07, 0x72, 0x65, 0x66, 0x65, 0x72, 0x65, 0x72,   /*  - r e f e r e r */
  0x00, 0x00, 0x00, 0x0b, 0x72, 0x65, 0x74, 0x72,   /*  - - - - r e t r */
  0x79, 0x2d, 0x61, 0x66, 0x74, 0x65, 0x72, 0x00,   /*  y - a f t e r - */
  0x00, 0x00, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65,   /*  - - - s e r v e */
  0x72, 0x00, 0x00, 0x00, 0x02, 0x74, 0x65, 0x00,   /*  r - - - - t e - */
  0x00, 0x00, 0x07, 0x74, 0x72, 0x61, 0x69, 0x6c,   /*  - - - t r a i l */
  0x65, 0x72, 0x00, 0x00, 0x00, 0x11, 0x74, 0x72,   /*  e r - - - - t r */
  0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2d, 0x65,   /*  a n s f e r - e */
  0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x00,   /*  n c o d i n g - */
  0x00, 0x00, 0x07, 0x75, 0x70, 0x67, 0x72, 0x61,   /*  - - - u p g r a */
  0x64, 0x65, 0x00, 0x00, 0x00, 0x0a, 0x75, 0x73,   /*  d e - - - - u s */
  0x65, 0x72, 0x2d, 0x61, 0x67, 0x65, 0x6e, 0x74,   /*  e r - a g e n t */
  0x00, 0x00, 0x00, 0x04, 0x76, 0x61, 0x72, 0x79,   /*  - - - - v a r y */
  0x00, 0x00, 0x00, 0x03, 0x76, 0x69, 0x61, 0x00,   /*  - - - - v i a - */
  0x00, 0x00, 0x07, 0x77, 0x61, 0x72, 0x6e, 0x69,   /*  - - - w a r n i */
  0x6e, 0x67, 0x00, 0x00, 0x00, 0x10, 0x77, 0x77,   /*  n g - - - - w w */
  0x77, 0x2d, 0x61, 0x75, 0x74, 0x68, 0x65, 0x6e,   /*  w - a u t h e n */
  0x74, 0x69, 0x63, 0x61, 0x74, 0x65, 0x00, 0x00,   /*  t i c a t e - - */
  0x00, 0x06, 0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64,   /*  - - m e t h o d */
  0x00, 0x00, 0x00, 0x03, 0x67, 0x65, 0x74, 0x00,   /*  - - - - g e t - */
  0x00, 0x00, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75,   /*  - - - s t a t u */
  0x73, 0x00, 0x00, 0x00, 0x06, 0x32, 0x30, 0x30,   /*  s - - - - 2 0 0 */
  0x20, 0x4f, 0x4b, 0x00, 0x00, 0x00, 0x07, 0x76,   /*  - O K - - - - v */
  0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x00, 0x00,   /*  e r s i o n - - */
  0x00, 0x08, 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31,   /*  - - H T T P - 1 */
  0x2e, 0x31, 0x00, 0x00, 0x00, 0x03, 0x75, 0x72,   /*  - 1 - - - - u r */
  0x6c, 0x00, 0x00, 0x00, 0x06, 0x70, 0x75, 0x62,   /*  l - - - - p u b */
  0x6c, 0x69, 0x63, 0x00, 0x00, 0x00, 0x0a, 0x73,   /*  l i c - - - - s */
  0x65, 0x74, 0x2d, 0x63, 0x6f, 0x6f, 0x6b, 0x69,   /*  e t - c o o k i */
  0x65, 0x00, 0x00, 0x00, 0x0a, 0x6b, 0x65, 0x65,   /*  e - - - - k e e */
  0x70, 0x2d, 0x61, 0x6c, 0x69, 0x76, 0x65, 0x00,   /*  p - a l i v e - */
  0x00, 0x00, 0x06, 0x6f, 0x72, 0x69, 0x67, 0x69,   /*  - - - o r i g i */
  0x6e, 0x31, 0x30, 0x30, 0x31, 0x30, 0x31, 0x32,   /*  n 1 0 0 1 0 1 2 */
  0x30, 0x31, 0x32, 0x30, 0x32, 0x32, 0x30, 0x35,   /*  0 1 2 0 2 2 0 5 */
  0x32, 0x30, 0x36, 0x33, 0x30, 0x30, 0x33, 0x30,   /*  2 0 6 3 0 0 3 0 */
  0x32, 0x33, 0x30, 0x33, 0x33, 0x30, 0x34, 0x33,   /*  2 3 0 3 3 0 4 3 */
  0x30, 0x35, 0x33, 0x30, 0x36, 0x33, 0x30, 0x37,   /*  0 5 3 0 6 3 0 7 */
  0x34, 0x30, 0x32, 0x34, 0x30, 0x35, 0x34, 0x30,   /*  4 0 2 4 0 5 4 0 */
  0x36, 0x34, 0x30, 0x37, 0x34, 0x30, 0x38, 0x34,   /*  6 4 0 7 4 0 8 4 */
  0x30, 0x39, 0x34, 0x31, 0x30, 0x34, 0x31, 0x31,   /*  0 9 4 1 0 4 1 1 */
  0x34, 0x31, 0x32, 0x34, 0x31, 0x33, 0x34, 0x31,   /*  4 1 2 4 1 3 4 1 */
  0x34, 0x34, 0x31, 0x35, 0x34, 0x31, 0x36, 0x34,   /*  4 4 1 5 4 1 6 4 */
  0x31, 0x37, 0x35, 0x30, 0x32, 0x35, 0x30, 0x34,   /*  1 7 5 0 2 5 0 4 */
  0x35, 0x30, 0x35, 0x32, 0x30, 0x33, 0x20, 0x4e,   /*  5 0 5 2 0 3 - N */
  0x6f, 0x6e, 0x2d, 0x41, 0x75, 0x74, 0x68, 0x6f,   /*  o n - A u t h o */
  0x72, 0x69, 0x74, 0x61, 0x74, 0x69, 0x76, 0x65,   /*  r i t a t i v e */
  0x20, 0x49, 0x6e, 0x66, 0x6f, 0x72, 0x6d, 0x61,   /*  - I n f o r m a */
  0x74, 0x69, 0x6f, 0x6e, 0x32, 0x30, 0x34, 0x20,   /*  t i o n 2 0 4 - */
  0x4e, 0x6f, 0x20, 0x43, 0x6f, 0x6e, 0x74, 0x65,   /*  N o - C o n t e */
  0x6e, 0x74, 0x33, 0x30, 0x31, 0x20, 0x4d, 0x6f,   /*  n t 3 0 1 - M o */
  0x76, 0x65, 0x64, 0x20, 0x50, 0x65, 0x72, 0x6d,   /*  v e d - P e r m */
  0x61, 0x6e, 0x65, 0x6e, 0x74, 0x6c, 0x79, 0x34,   /*  a n e n t l y 4 */
  0x30, 0x30, 0x20, 0x42, 0x61, 0x64, 0x20, 0x52,   /*  0 0 - B a d - R */
  0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x34, 0x30,   /*  e q u e s t 4 0 */
  0x31, 0x20, 0x55, 0x6e, 0x61, 0x75, 0x74, 0x68,   /*  1 - U n a u t h */
  0x6f, 0x72, 0x69, 0x7a, 0x65, 0x64, 0x34, 0x30,   /*  o r i z e d 4 0 */
  0x33, 0x20, 0x46, 0x6f, 0x72, 0x62, 0x69, 0x64,   /*  3 - F o r b i d */
  0x64, 0x65, 0x6e, 0x34, 0x30, 0x34, 0x20, 0x4e,   /*  d e n 4 0 4 - N */
  0x6f, 0x74, 0x20, 0x46, 0x6f, 0x75, 0x6e, 0x64,   /*  o t - F o u n d */
  0x35, 0x30, 0x30, 0x20, 0x49, 0x6e, 0x74, 0x65,   /*  5 0 0 - I n t e */
  0x72, 0x6e, 0x61, 0x6c, 0x20, 0x53, 0x65, 0x72,   /*  r n a l - S e r */
  0x76, 0x65, 0x72, 0x20, 0x45, 0x72, 0x72, 0x6f,   /*  v e r - E r r o */
  0x72, 0x35, 0x30, 0x31, 0x20, 0x4e, 0x6f, 0x74,   /*  r 5 0 1 - N o t */
  0x20, 0x49, 0x6d, 0x70, 0x6c, 0x65, 0x6d, 0x65,   /*  - I m p l e m e */
  0x6e, 0x74, 0x65, 0x64, 0x35, 0x30, 0x33, 0x20,   /*  n t e d 5 0 3 - */
  0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x20,   /*  S e r v i c e - */
  0x55, 0x6e, 0x61, 0x76, 0x61, 0x69, 0x6c, 0x61,   /*  U n a v a i l a */
  0x62, 0x6c, 0x65, 0x4a, 0x61, 0x6e, 0x20, 0x46,   /*  b l e J a n - F */
  0x65, 0x62, 0x20, 0x4d, 0x61, 0x72, 0x20, 0x41,   /*  e b - M a r - A */
  0x70, 0x72, 0x20, 0x4d, 0x61, 0x79, 0x20, 0x4a,   /*  p r - M a y - J */
  0x75, 0x6e, 0x20, 0x4a, 0x75, 0x6c, 0x20, 0x41,   /*  u n - J u l - A */
  0x75, 0x67, 0x20, 0x53, 0x65, 0x70, 0x74, 0x20,   /*  u g - S e p t - */
  0x4f, 0x63, 0x74, 0x20, 0x4e, 0x6f, 0x76, 0x20,   /*  O c t - N o v - */
  0x44, 0x65, 0x63, 0x20, 0x30, 0x30, 0x3a, 0x30,   /*  D e c - 0 0 - 0 */
  0x30, 0x3a, 0x30, 0x30, 0x20, 0x4d, 0x6f, 0x6e,   /*  0 - 0 0 - M o n */
  0x2c, 0x20, 0x54, 0x75, 0x65, 0x2c, 0x20, 0x57,   /*  - - T u e - - W */
  0x65, 0x64, 0x2c, 0x20, 0x54, 0x68, 0x75, 0x2c,   /*  e d - - T h u - */
  0x20, 0x46, 0x72, 0x69, 0x2c, 0x20, 0x53, 0x61,   /*  - F r i - - S a */
  0x74, 0x2c, 0x20, 0x53, 0x75, 0x6e, 0x2c, 0x20,   /*  t - - S u n - - */
  0x47, 0x4d, 0x54, 0x63, 0x68, 0x75, 0x6e, 0x6b,   /*  G M T c h u n k */
  0x65, 0x64, 0x2c, 0x74, 0x65, 0x78, 0x74, 0x2f,   /*  e d - t e x t - */
  0x68, 0x74, 0x6d, 0x6c, 0x2c, 0x69, 0x6d, 0x61,   /*  h t m l - i m a */
  0x67, 0x65, 0x2f, 0x70, 0x6e, 0x67, 0x2c, 0x69,   /*  g e - p n g - i */
  0x6d, 0x61, 0x67, 0x65, 0x2f, 0x6a, 0x70, 0x67,   /*  m a g e - j p g */
  0x2c, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x67,   /*  - i m a g e - g */
  0x69, 0x66, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69,   /*  i f - a p p l i */
  0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78,   /*  c a t i o n - x */
  0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69,   /*  m l - a p p l i */
  0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78,   /*  c a t i o n - x */
  0x68, 0x74, 0x6d, 0x6c, 0x2b, 0x78, 0x6d, 0x6c,   /*  h t m l - x m l */
  0x2c, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x70, 0x6c,   /*  - t e x t - p l */
  0x61, 0x69, 0x6e, 0x2c, 0x74, 0x65, 0x78, 0x74,   /*  a i n - t e x t */
  0x2f, 0x6a, 0x61, 0x76, 0x61, 0x73, 0x63, 0x72,   /*  - j a v a s c r */
  0x69, 0x70, 0x74, 0x2c, 0x70, 0x75, 0x62, 0x6c,   /*  i p t - p u b l */
  0x69, 0x63, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74,   /*  i c p r i v a t */
  0x65, 0x6d, 0x61, 0x78, 0x2d, 0x61, 0x67, 0x65,   /*  e m a x - a g e */
  0x3d, 0x67, 0x7a, 0x69, 0x70, 0x2c, 0x64, 0x65,   /*  - g z i p - d e */
  0x66, 0x6c, 0x61, 0x74, 0x65, 0x2c, 0x73, 0x64,   /*  f l a t e - s d */
  0x63, 0x68, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65,   /*  c h c h a r s e */
  0x74, 0x3d, 0x75, 0x74, 0x66, 0x2d, 0x38, 0x63,   /*  t - u t f - 8 c */
  0x68, 0x61, 0x72, 0x73, 0x65, 0x74, 0x3d, 0x69,   /*  h a r s e t - i */
  0x73, 0x6f, 0x2d, 0x38, 0x38, 0x35, 0x39, 0x2d,   /*  s o - 8 8 5 9 - */
  0x31, 0x2c, 0x75, 0x74, 0x66, 0x2d, 0x2c, 0x2a,   /*  1 - u t f - - - */
  0x2c, 0x65, 0x6e, 0x71, 0x3d, 0x30, 0x2e          /*  - e n q - 0 - */
};

static const uint8_t* nghttp2_select_hd_dict(size_t *len_ptr, uint16_t version)
{
  const uint8_t *hd_dict;
  hd_dict = NULL;
  if(version == NGHTTP2_PROTO_SPDY2) {
    hd_dict = (const uint8_t*)spdy2_hd_dict;
    *len_ptr = sizeof(spdy2_hd_dict);
  } else if(version == NGHTTP2_PROTO_SPDY3) {
    hd_dict = spdy3_hd_dict;
    *len_ptr = sizeof(spdy3_hd_dict);
  }
  return hd_dict;
}

int nghttp2_zlib_deflate_hd_init(nghttp2_zlib *deflater, int comp,
                                 uint16_t version)
{
  const unsigned char *hd_dict;
  size_t hd_dict_length;
  deflater->zst.next_in = Z_NULL;
  deflater->zst.zalloc = Z_NULL;
  deflater->zst.zfree = Z_NULL;
  deflater->zst.opaque = Z_NULL;
  deflater->version = version;
  hd_dict = nghttp2_select_hd_dict(&hd_dict_length, version);
  if(hd_dict == NULL) {
    return NGHTTP2_ERR_UNSUPPORTED_VERSION;
  }
  if(Z_OK != deflateInit2(&deflater->zst,
                          comp ? COMPRESSION_LEVEL : Z_NO_COMPRESSION,
                          Z_DEFLATED, WINDOW_BITS, MEM_LEVEL,
                          Z_DEFAULT_STRATEGY)) {
    return NGHTTP2_ERR_ZLIB;
  }
  if(Z_OK != deflateSetDictionary(&deflater->zst, (uint8_t*)hd_dict,
                                  hd_dict_length)) {
    nghttp2_zlib_deflate_free(deflater);
    return NGHTTP2_ERR_ZLIB;
  }
  return 0;
}

int nghttp2_zlib_inflate_hd_init(nghttp2_zlib *inflater, uint16_t version)
{
  const unsigned char *hd_dict;
  size_t hd_dict_length;
  inflater->zst.next_in = Z_NULL;
  inflater->zst.avail_in = 0;
  inflater->zst.zalloc = Z_NULL;
  inflater->zst.zfree = Z_NULL;
  inflater->zst.opaque = Z_NULL;
  inflater->version = version;
  hd_dict = nghttp2_select_hd_dict(&hd_dict_length, version);
  if(hd_dict == NULL) {
    return NGHTTP2_ERR_UNSUPPORTED_VERSION;
  }
  if(Z_OK != inflateInit(&inflater->zst)) {
    return NGHTTP2_ERR_ZLIB;
  }
  return 0;
}

void nghttp2_zlib_deflate_free(nghttp2_zlib *deflater)
{
  deflateEnd(&deflater->zst);
}

void nghttp2_zlib_inflate_free(nghttp2_zlib *inflater)
{
  inflateEnd(&inflater->zst);
}

ssize_t nghttp2_zlib_deflate_hd(nghttp2_zlib *deflater,
                                uint8_t *out, size_t outlen,
                                const uint8_t *in, size_t inlen)
{
  int r;
  deflater->zst.avail_in = inlen;
  deflater->zst.next_in = (uint8_t*)in;
  deflater->zst.avail_out = outlen;
  deflater->zst.next_out = out;
  r = deflate(&deflater->zst, Z_SYNC_FLUSH);
  if(r == Z_OK) {
    return outlen-deflater->zst.avail_out;
  } else {
    return NGHTTP2_ERR_ZLIB;
  }
}

size_t nghttp2_zlib_deflate_hd_bound(nghttp2_zlib *deflater, size_t len)
{
  return deflateBound(&deflater->zst, len);
}

ssize_t nghttp2_zlib_inflate_hd(nghttp2_zlib *inflater,
                                nghttp2_buffer* buf,
                                const uint8_t *in, size_t inlen)
{
  int r;
  inflater->zst.avail_in = inlen;
  inflater->zst.next_in = (uint8_t*)in;
  while(1) {
    if(nghttp2_buffer_avail(buf) == 0) {
      if((r = nghttp2_buffer_alloc(buf)) != 0) {
        return r;
      }
    }
    inflater->zst.avail_out = nghttp2_buffer_avail(buf);
    inflater->zst.next_out = nghttp2_buffer_get(buf);
    r = inflate(&inflater->zst, Z_NO_FLUSH);
    if(r == Z_STREAM_ERROR || r == Z_STREAM_END || r == Z_DATA_ERROR) {
      return NGHTTP2_ERR_ZLIB;
    } else if(r == Z_NEED_DICT) {
      const uint8_t *hd_dict;
      size_t hd_dict_length;
      hd_dict = nghttp2_select_hd_dict(&hd_dict_length, inflater->version);
      assert(hd_dict);
      if(Z_OK != inflateSetDictionary(&inflater->zst, (uint8_t*)hd_dict,
                                      hd_dict_length)) {
        return NGHTTP2_ERR_ZLIB;
      }
    } else {
      if(r == Z_OK) {
        size_t adv = nghttp2_buffer_avail(buf)-inflater->zst.avail_out;
        nghttp2_buffer_advance(buf, adv);
      }
      if(inflater->zst.avail_in == 0 && inflater->zst.avail_out > 0) {
        break;
      }
    }
  }
  return nghttp2_buffer_length(buf);
}