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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_CORE_LIB_HTTP_PARSER_H
#define GRPC_CORE_LIB_HTTP_PARSER_H
#include <grpc/slice.h>
#include <grpc/support/port_platform.h>
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/iomgr/error.h"
/* Maximum length of a header string of the form 'Key: Value\r\n' */
#define GRPC_HTTP_PARSER_MAX_HEADER_LENGTH 4096
/* A single header to be passed in a request */
typedef struct grpc_http_header {
char *key;
char *value;
} grpc_http_header;
typedef enum {
GRPC_HTTP_FIRST_LINE,
GRPC_HTTP_HEADERS,
GRPC_HTTP_BODY
} grpc_http_parser_state;
typedef enum {
GRPC_HTTP_HTTP10,
GRPC_HTTP_HTTP11,
GRPC_HTTP_HTTP20,
} grpc_http_version;
typedef enum {
GRPC_HTTP_RESPONSE,
GRPC_HTTP_REQUEST,
} grpc_http_type;
/* A request */
typedef struct grpc_http_request {
/* Method of the request (e.g. GET, POST) */
char *method;
/* The path of the resource to fetch */
char *path;
/* HTTP version to use */
grpc_http_version version;
/* Headers attached to the request */
size_t hdr_count;
grpc_http_header *hdrs;
/* Body: length and contents; contents are NOT null-terminated */
size_t body_length;
char *body;
} grpc_http_request;
/* A response */
typedef struct grpc_http_response {
/* HTTP status code */
int status;
/* Headers: count and key/values */
size_t hdr_count;
grpc_http_header *hdrs;
/* Body: length and contents; contents are NOT null-terminated */
size_t body_length;
char *body;
} grpc_http_response;
typedef struct {
grpc_http_parser_state state;
grpc_http_type type;
union {
grpc_http_response *response;
grpc_http_request *request;
void *request_or_response;
} http;
size_t body_capacity;
size_t hdr_capacity;
uint8_t cur_line[GRPC_HTTP_PARSER_MAX_HEADER_LENGTH];
size_t cur_line_length;
size_t cur_line_end_length;
} grpc_http_parser;
void grpc_http_parser_init(grpc_http_parser *parser, grpc_http_type type,
void *request_or_response);
void grpc_http_parser_destroy(grpc_http_parser *parser);
/* Sets \a start_of_body to the offset in \a slice of the start of the body. */
grpc_error *grpc_http_parser_parse(grpc_http_parser *parser, grpc_slice slice,
size_t *start_of_body);
grpc_error *grpc_http_parser_eof(grpc_http_parser *parser);
void grpc_http_request_destroy(grpc_http_request *request);
void grpc_http_response_destroy(grpc_http_response *response);
extern grpc_tracer_flag grpc_http1_trace;
#endif /* GRPC_CORE_LIB_HTTP_PARSER_H */
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