1 // 2 // 3 // Copyright 2015 gRPC authors. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 // 17 // 18 19 #ifndef GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H 20 #define GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H 21 22 #include <grpc/slice.h> 23 #include <grpc/support/port_platform.h> 24 #include <stdint.h> 25 26 #include "src/core/ext/transport/chttp2/transport/legacy_frame.h" 27 #include "src/core/lib/iomgr/error.h" 28 29 typedef enum { 30 GRPC_CHTTP2_GOAWAY_LSI0, 31 GRPC_CHTTP2_GOAWAY_LSI1, 32 GRPC_CHTTP2_GOAWAY_LSI2, 33 GRPC_CHTTP2_GOAWAY_LSI3, 34 GRPC_CHTTP2_GOAWAY_ERR0, 35 GRPC_CHTTP2_GOAWAY_ERR1, 36 GRPC_CHTTP2_GOAWAY_ERR2, 37 GRPC_CHTTP2_GOAWAY_ERR3, 38 GRPC_CHTTP2_GOAWAY_DEBUG 39 } grpc_chttp2_goaway_parse_state; 40 41 struct grpc_chttp2_goaway_parser { 42 grpc_chttp2_goaway_parse_state state; 43 uint32_t last_stream_id; 44 uint32_t error_code; 45 char* debug_data; 46 uint32_t debug_length; 47 uint32_t debug_pos; 48 }; 49 void grpc_chttp2_goaway_parser_init(grpc_chttp2_goaway_parser* p); 50 void grpc_chttp2_goaway_parser_destroy(grpc_chttp2_goaway_parser* p); 51 grpc_error_handle grpc_chttp2_goaway_parser_begin_frame( 52 grpc_chttp2_goaway_parser* parser, uint32_t length, uint8_t flags); 53 grpc_error_handle grpc_chttp2_goaway_parser_parse(void* parser, 54 grpc_chttp2_transport* t, 55 grpc_chttp2_stream* s, 56 const grpc_slice& slice, 57 int is_last); 58 59 void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code, 60 const grpc_slice& debug_data, 61 grpc_slice_buffer* slice_buffer); 62 63 #endif // GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H 64