/*
罗剑锋老师的注释参考：
https://github.com/chronolaw/annotated_nginx/blob/master/nginx/src/http/ngx_http_request.h
*/struct ngx_http_request_s {uint32_t signature; /* "HTTP" */ngx_connection_t *connection;void **ctx;void **main_conf;void **srv_conf;void **loc_conf;ngx_http_event_handler_pt read_event_handler;ngx_http_event_handler_pt write_event_handler;#if (NGX_HTTP_CACHE)ngx_http_cache_t *cache;
#endifngx_http_upstream_t *upstream;ngx_array_t *upstream_states;/* of ngx_http_upstream_state_t */ngx_pool_t *pool;ngx_buf_t *header_in;ngx_http_headers_in_t headers_in;ngx_http_headers_out_t headers_out;ngx_http_request_body_t *request_body;time_t lingering_time;time_t start_sec;ngx_msec_t start_msec;ngx_uint_t method;ngx_uint_t http_version;ngx_str_t request_line;ngx_str_t uri;ngx_str_t args;ngx_str_t exten;ngx_str_t unparsed_uri;ngx_str_t method_name;ngx_str_t http_protocol;ngx_str_t schema;ngx_str_t charset;ngx_str_t cookie_self;ngx_str_t user_name;ngx_chain_t *out;ngx_http_request_t *main;ngx_http_request_t *parent;ngx_http_postponed_request_t *postponed;ngx_http_post_subrequest_t *post_subrequest;ngx_http_posted_request_t *posted_requests;ngx_int_t phase_handler;ngx_http_handler_pt content_handler;ngx_uint_t access_code;ngx_http_variable_value_t *variables;#if (NGX_PCRE)ngx_uint_t ncaptures;int *captures;u_char *captures_data;
#endifsize_t limit_rate;size_t limit_rate_after;/* used to learn the Apache compatible response length without a header */size_t header_size;off_t request_length;ngx_uint_t err_status;ngx_http_connection_t *http_connection;ngx_http_v2_stream_t *stream;ngx_http_log_handler_pt log_handler;ngx_http_cleanup_t *cleanup;unsigned count:16;unsigned subrequests:8;unsigned blocked:8;unsigned aio:1;unsigned http_state:4;/* URI with "/." and on Win32 with "//" */unsigned complex_uri:1;/* URI with "%" */unsigned quoted_uri:1;/* URI with "+" */unsigned plus_in_uri:1;/* URI with empty path */unsigned empty_path_in_uri:1;unsigned invalid_header:1;unsigned add_uri_to_alias:1;unsigned valid_location:1;unsigned valid_unparsed_uri:1;unsigned uri_changed:1;unsigned uri_changes:4;unsigned request_body_in_single_buf:1;unsigned request_body_in_file_only:1;unsigned request_body_in_persistent_file:1;unsigned request_body_in_clean_file:1;unsigned request_body_file_group_access:1;unsigned request_body_file_log_level:3;unsigned request_body_no_buffering:1;unsigned subrequest_in_memory:1;unsigned waited:1;#if (NGX_HTTP_CACHE)unsigned cached:1;
#endif#if (NGX_HTTP_GZIP)unsigned gzip_tested:1;unsigned gzip_ok:1;unsigned gzip_vary:1;
#endif#if (NGX_PCRE)unsigned realloc_captures:1;
#endifunsigned proxy:1;unsigned bypass_cache:1;unsigned no_cache:1;/** instead of using the request context data in* ngx_http_limit_conn_module and ngx_http_limit_req_module* we use the bit fields in the request structure*/unsigned limit_conn_status:2;unsigned limit_req_status:3;unsigned limit_rate_set:1;unsigned limit_rate_after_set:1;#if 0unsigned cacheable:1;
#endifunsigned pipeline:1;unsigned chunked:1;unsigned header_only:1;unsigned expect_trailers:1;unsigned keepalive:1;unsigned lingering_close:1;unsigned discard_body:1;unsigned reading_body:1;unsigned internal:1;unsigned error_page:1;unsigned filter_finalize:1;unsigned post_action:1;unsigned request_complete:1;unsigned request_output:1;unsigned header_sent:1;unsigned expect_tested:1;unsigned root_tested:1;unsigned done:1;unsigned logged:1;unsigned buffered:4;unsigned main_filter_need_in_memory:1;unsigned filter_need_in_memory:1;unsigned filter_need_temporary:1;unsigned preserve_body:1;unsigned allow_ranges:1;unsigned subrequest_ranges:1;unsigned single_range:1;unsigned disable_not_modified:1;unsigned stat_reading:1;unsigned stat_writing:1;unsigned stat_processing:1;unsigned background:1;unsigned health_check:1;/* used to parse HTTP headers */ngx_uint_t state;ngx_uint_t header_hash;ngx_uint_t lowcase_index;u_char lowcase_header[NGX_HTTP_LC_HEADER_LEN];u_char *header_name_start;u_char *header_name_end;u_char *header_start;u_char *header_end;/** a memory that can be reused after parsing a request line* via ngx_http_ephemeral_t*/u_char *uri_start;u_char *uri_end;u_char *uri_ext;u_char *args_start;u_char *request_start;u_char *request_end;u_char *method_end;u_char *schema_start;u_char *schema_end;u_char *host_start;u_char *host_end;u_char *port_start;u_char *port_end;unsigned http_minor:16;unsigned http_major:16;
};ngx_http_headers_out_t
/*
罗剑锋老师的注释参考：
https://github.com/chronolaw/annotated_nginx/blob/master/nginx/src/http/ngx_http_request.h
*/typedef struct {ngx_list_t headers;ngx_list_t trailers;ngx_uint_t status;ngx_str_t status_line;ngx_table_elt_t *server;ngx_table_elt_t *date;ngx_table_elt_t *content_length;ngx_table_elt_t *content_encoding;ngx_table_elt_t *location;ngx_table_elt_t *refresh;ngx_table_elt_t *last_modified;ngx_table_elt_t *content_range;ngx_table_elt_t *accept_ranges;ngx_table_elt_t *www_authenticate;ngx_table_elt_t *expires;ngx_table_elt_t *etag;ngx_str_t *override_charset;size_t content_type_len;ngx_str_t content_type;ngx_str_t charset;u_char *content_type_lowcase;ngx_uint_t content_type_hash;ngx_array_t cache_control;ngx_array_t link;off_t content_length_n;off_t content_offset;time_t date_time;time_t last_modified_time;
} ngx_http_headers_out_t;ngx_list_t
typedef struct {ngx_list_part_t *last;ngx_list_part_t part;size_t size;ngx_uint_t nalloc;ngx_pool_t *pool;
} ngx_list_t;
