/* 
羅劍鋒老師的注釋參考：
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;
#endif

    ngx_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;
#endif

    size_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 "http://" */
    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;
#endif

    unsigned                          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 0
    unsigned                          cacheable:1;
#endif

    unsigned                          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?

/* 
羅劍鋒老師的注釋參考：
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文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-736607.html

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;

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