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Diffstat (limited to 'src/core/transport/chttp2/frame_settings.h')
-rw-r--r-- | src/core/transport/chttp2/frame_settings.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/core/transport/chttp2/frame_settings.h b/src/core/transport/chttp2/frame_settings.h new file mode 100644 index 0000000000..74e2b4fa22 --- /dev/null +++ b/src/core/transport/chttp2/frame_settings.h @@ -0,0 +1,99 @@ +/* + * + * Copyright 2014, 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_INTERNAL_TRANSPORT_CHTTP2_FRAME_SETTINGS_H__ +#define __GRPC_INTERNAL_TRANSPORT_CHTTP2_FRAME_SETTINGS_H__ + +#include <grpc/support/port_platform.h> +#include <grpc/support/slice.h> +#include "src/core/transport/chttp2/frame.h" + +typedef enum { + GRPC_CHTTP2_SPS_ID0, + GRPC_CHTTP2_SPS_ID1, + GRPC_CHTTP2_SPS_VAL0, + GRPC_CHTTP2_SPS_VAL1, + GRPC_CHTTP2_SPS_VAL2, + GRPC_CHTTP2_SPS_VAL3 +} grpc_chttp2_settings_parse_state; + +/* The things HTTP/2 defines as connection level settings */ +typedef enum { + GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE = 1, + GRPC_CHTTP2_SETTINGS_ENABLE_PUSH = 2, + GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS = 3, + GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE = 4, + GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE = 5, + GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE = 6, + GRPC_CHTTP2_NUM_SETTINGS +} grpc_chttp2_setting_id; + +typedef struct { + grpc_chttp2_settings_parse_state state; + gpr_uint32 *target_settings; + gpr_uint8 is_ack; + gpr_uint16 id; + gpr_uint32 value; + gpr_uint32 incoming_settings[GRPC_CHTTP2_NUM_SETTINGS]; +} grpc_chttp2_settings_parser; + +typedef enum { + GRPC_CHTTP2_CLAMP_INVALID_VALUE, + GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE +} grpc_chttp2_invalid_value_behavior; + +typedef struct { + const char *name; + gpr_uint32 default_value; + gpr_uint32 min_value; + gpr_uint32 max_value; + grpc_chttp2_invalid_value_behavior invalid_value_behavior; +} grpc_chttp2_setting_parameters; + +/* HTTP/2 mandated connection setting parameters */ +extern const grpc_chttp2_setting_parameters + grpc_chttp2_settings_parameters[GRPC_CHTTP2_NUM_SETTINGS]; + +/* Create a settings frame by diffing old & new, and updating old to be new */ +gpr_slice grpc_chttp2_settings_create(gpr_uint32 *old, const gpr_uint32 *new, + size_t count); +/* Create an ack settings frame */ +gpr_slice grpc_chttp2_settings_ack_create(); + +grpc_chttp2_parse_error grpc_chttp2_settings_parser_begin_frame( + grpc_chttp2_settings_parser *parser, gpr_uint32 length, gpr_uint8 flags, + gpr_uint32 *settings); +grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse( + void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + +#endif /* __GRPC_INTERNAL_TRANSPORT_CHTTP2_FRAME_SETTINGS_H__ */ |