1 files changed, 12 insertions, 17 deletions
diff --git a/deps/nghttp2/lib/nghttp2_hd_huffman.h b/deps/nghttp2/lib/nghttp2_hd_huffman.h
index c6e3942e95..2bfd531816 100644
--- a/deps/nghttp2/lib/nghttp2_hd_huffman.h
+++ b/deps/nghttp2/lib/nghttp2_hd_huffman.h
@@ -34,21 +34,20 @@
 typedef enum {
   /* FSA accepts this state as the end of huffman encoding
      sequence. */
-  NGHTTP2_HUFF_ACCEPTED = 1,
+  NGHTTP2_HUFF_ACCEPTED = 1 << 14,
   /* This state emits symbol */
-  NGHTTP2_HUFF_SYM = (1 << 1),
-  /* If state machine reaches this state, decoding fails. */
-  NGHTTP2_HUFF_FAIL = (1 << 2)
+  NGHTTP2_HUFF_SYM = 1 << 15,
 } nghttp2_huff_decode_flag;
 
 typedef struct {
-  /* huffman decoding state, which is actually the node ID of internal
-     huffman tree.  We have 257 leaf nodes, but they are identical to
-     root node other than emitting a symbol, so we have 256 internal
-     nodes [1..255], inclusive. */
-  uint8_t state;
-  /* bitwise OR of zero or more of the nghttp2_huff_decode_flag */
-  uint8_t flags;
+  /* fstate is the current huffman decoding state, which is actually
+     the node ID of internal huffman tree with
+     nghttp2_huff_decode_flag OR-ed.  We have 257 leaf nodes, but they
+     are identical to root node other than emitting a symbol, so we
+     have 256 internal nodes [1..255], inclusive.  The node ID 256 is
+     a special node and it is a terminal state that means decoding
+     failed. */
+  uint16_t fstate;
   /* symbol if NGHTTP2_HUFF_SYM flag set */
   uint8_t sym;
 } nghttp2_huff_decode;
@@ -56,12 +55,8 @@ typedef struct {
 typedef nghttp2_huff_decode huff_decode_table_type[16];
 
 typedef struct {
-  /* Current huffman decoding state. We stripped leaf nodes, so the
-     value range is [0..255], inclusive. */
-  uint8_t state;
-  /* nonzero if we can say that the decoding process succeeds at this
-     state */
-  uint8_t accept;
+  /* fstate is the current huffman decoding state. */
+  uint16_t fstate;
 } nghttp2_hd_huff_decode_context;
 
 typedef struct {