diff options
Diffstat (limited to 'src/core/transport/chttp2/hpack_encoder.h')
| -rw-r--r-- | src/core/transport/chttp2/hpack_encoder.h | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/src/core/transport/chttp2/hpack_encoder.h b/src/core/transport/chttp2/hpack_encoder.h index 59b122dfda..a3600436e9 100644 --- a/src/core/transport/chttp2/hpack_encoder.h +++ b/src/core/transport/chttp2/hpack_encoder.h @@ -43,14 +43,26 @@ #define GRPC_CHTTP2_HPACKC_NUM_FILTERS 256 #define GRPC_CHTTP2_HPACKC_NUM_VALUES 256 -#define GRPC_CHTTP2_HPACKC_MAX_TABLE_ELEMS (4096 / 32) +/* initial table size, per spec */ +#define GRPC_CHTTP2_HPACKC_INITIAL_TABLE_SIZE 4096 +/* maximum table size we'll actually use */ +#define GRPC_CHTTP2_HPACKC_MAX_TABLE_SIZE (1024 * 1024) typedef struct { gpr_uint32 filter_elems_sum; + gpr_uint32 max_table_size; + gpr_uint32 max_table_elems; + gpr_uint32 cap_table_elems; + /** if non-zero, advertise to the decoder that we'll start using a table + of this size */ + gpr_uint8 advertise_table_size_change; + /** maximum number of bytes we'll use for the decode table (to guard against + peers ooming us by setting decode table size high) */ + gpr_uint32 max_usable_size; /* one before the lowest usable table index */ gpr_uint32 tail_remote_index; - gpr_uint16 table_size; - gpr_uint16 table_elems; + gpr_uint32 table_size; + gpr_uint32 table_elems; /* filter tables for elems: this tables provides an approximate popularity count for particular hashes, and are used to determine whether @@ -59,11 +71,6 @@ typedef struct { been seen. When that count reaches max (255), all values are halved. */ gpr_uint8 filter_elems[GRPC_CHTTP2_HPACKC_NUM_FILTERS]; - /* metadata context */ - grpc_mdctx *mdctx; - /* the string 'grpc-timeout' */ - grpc_mdstr *timeout_key_str; - /* entry tables for keys & elems: these tables track values that have been seen and *may* be in the decompressor table */ grpc_mdstr *entries_keys[GRPC_CHTTP2_HPACKC_NUM_VALUES]; @@ -71,12 +78,15 @@ typedef struct { gpr_uint32 indices_keys[GRPC_CHTTP2_HPACKC_NUM_VALUES]; gpr_uint32 indices_elems[GRPC_CHTTP2_HPACKC_NUM_VALUES]; - gpr_uint16 table_elem_size[GRPC_CHTTP2_HPACKC_MAX_TABLE_ELEMS]; + gpr_uint16 *table_elem_size; } grpc_chttp2_hpack_compressor; -void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor *c, - grpc_mdctx *mdctx); +void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor *c); void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor *c); +void grpc_chttp2_hpack_compressor_set_max_table_size( + grpc_chttp2_hpack_compressor *c, gpr_uint32 max_table_size); +void grpc_chttp2_hpack_compressor_set_max_usable_size( + grpc_chttp2_hpack_compressor *c, gpr_uint32 max_table_size); void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c, gpr_uint32 id, grpc_metadata_batch *metadata, int is_eof, |