diff options
Diffstat (limited to 'src/core/lib/transport/chttp2/hpack_table.h')
| -rw-r--r-- | src/core/lib/transport/chttp2/hpack_table.h | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/src/core/lib/transport/chttp2/hpack_table.h b/src/core/lib/transport/chttp2/hpack_table.h deleted file mode 100644 index 2cbc02dd9c..0000000000 --- a/src/core/lib/transport/chttp2/hpack_table.h +++ /dev/null @@ -1,108 +0,0 @@ -/* - * - * Copyright 2015-2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_TABLE_H -#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_TABLE_H - -#include <grpc/support/port_platform.h> -#include <grpc/support/slice.h> -#include "src/core/lib/transport/metadata.h" - -/* HPACK header table */ - -/* last index in the static table */ -#define GRPC_CHTTP2_LAST_STATIC_ENTRY 61 - -/* Initial table size as per the spec */ -#define GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE 4096 -/* Maximum table size that we'll use */ -#define GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE -/* Per entry overhead bytes as per the spec */ -#define GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD 32 -#if 0 -/* Maximum number of entries we could possibly fit in the table, given defined - overheads */ -#define GRPC_CHTTP2_MAX_TABLE_COUNT \ - ((GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD - 1) / \ - GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD) -#endif - -/* hpack decoder table */ -typedef struct { - /* the first used entry in ents */ - uint32_t first_ent; - /* how many entries are in the table */ - uint32_t num_ents; - /* the amount of memory used by the table, according to the hpack algorithm */ - uint32_t mem_used; - /* the max memory allowed to be used by the table, according to the hpack - algorithm */ - uint32_t max_bytes; - /* the currently agreed size of the table, according to the hpack algorithm */ - uint32_t current_table_bytes; - /* Maximum number of entries we could possibly fit in the table, given defined - overheads */ - uint32_t max_entries; - /* Number of entries allocated in ents */ - uint32_t cap_entries; - /* a circular buffer of headers - this is stored in the opposite order to - what hpack specifies, in order to simplify table management a little... - meaning lookups need to SUBTRACT from the end position */ - grpc_mdelem **ents; - grpc_mdelem *static_ents[GRPC_CHTTP2_LAST_STATIC_ENTRY]; -} grpc_chttp2_hptbl; - -/* initialize a hpack table */ -void grpc_chttp2_hptbl_init(grpc_chttp2_hptbl *tbl); -void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl *tbl); -void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl *tbl, - uint32_t max_bytes); -int grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl *tbl, - uint32_t bytes); - -/* lookup a table entry based on its hpack index */ -grpc_mdelem *grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl *tbl, - uint32_t index); -/* add a table entry to the index */ -int grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl, - grpc_mdelem *md) GRPC_MUST_USE_RESULT; -/* Find a key/value pair in the table... returns the index in the table of the - most similar entry, or 0 if the value was not found */ -typedef struct { - uint32_t index; - int has_value; -} grpc_chttp2_hptbl_find_result; -grpc_chttp2_hptbl_find_result grpc_chttp2_hptbl_find( - const grpc_chttp2_hptbl *tbl, grpc_mdelem *md); - -#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_TABLE_H */ |