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Diffstat (limited to 'src/core/transport/chttp2/frame_data.h')
-rw-r--r-- | src/core/transport/chttp2/frame_data.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/core/transport/chttp2/frame_data.h b/src/core/transport/chttp2/frame_data.h new file mode 100644 index 0000000000..abe26dab76 --- /dev/null +++ b/src/core/transport/chttp2/frame_data.h @@ -0,0 +1,80 @@ +/* + * + * 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_DATA_H__ +#define __GRPC_INTERNAL_TRANSPORT_CHTTP2_FRAME_DATA_H__ + +/* Parser for GRPC streams embedded in DATA frames */ + +#include <grpc/support/slice.h> +#include <grpc/support/slice_buffer.h> +#include "src/core/transport/stream_op.h" +#include "src/core/transport/chttp2/frame.h" + +typedef enum { + GRPC_CHTTP2_DATA_FH_0, + GRPC_CHTTP2_DATA_FH_1, + GRPC_CHTTP2_DATA_FH_2, + GRPC_CHTTP2_DATA_FH_3, + GRPC_CHTTP2_DATA_FH_4, + GRPC_CHTTP2_DATA_FRAME +} grpc_chttp2_stream_state; + +typedef struct { + grpc_chttp2_stream_state state; + gpr_uint8 is_last_frame; + gpr_uint8 frame_type; + gpr_uint32 frame_size; + + grpc_stream_op_buffer incoming_sopb; +} grpc_chttp2_data_parser; + +/* initialize per-stream state for data frame parsing */ +grpc_chttp2_parse_error grpc_chttp2_data_parser_init( + grpc_chttp2_data_parser *parser); + +void grpc_chttp2_data_parser_destroy(grpc_chttp2_data_parser *parser); + +/* start processing a new data frame */ +grpc_chttp2_parse_error grpc_chttp2_data_parser_begin_frame( + grpc_chttp2_data_parser *parser, gpr_uint8 flags); + +/* handle a slice of a data frame - is_last indicates the last slice of a + frame */ +grpc_chttp2_parse_error grpc_chttp2_data_parser_parse( + void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + +/* create a slice with an empty data frame and is_last set */ +gpr_slice grpc_chttp2_data_frame_create_empty_close(gpr_uint32 id); + +#endif /* __GRPC_INTERNAL_TRANSPORT_CHTTP2_FRAME_DATA_H__ */ |