nginx/src/http/ngx_http_request.h

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/*
* Copyright (C) Igor Sysoev
*/
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#ifndef _NGX_HTTP_REQUEST_H_INCLUDED_
#define _NGX_HTTP_REQUEST_H_INCLUDED_
#define NGX_HTTP_DISCARD_BUFFER_SIZE 4096
#define NGX_HTTP_LINGERING_BUFFER_SIZE 4096
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#define NGX_HTTP_VERSION_9 9
#define NGX_HTTP_VERSION_10 1000
#define NGX_HTTP_VERSION_11 1001
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#define NGX_HTTP_GET 1
#define NGX_HTTP_HEAD 2
#define NGX_HTTP_POST 3
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#define NGX_HTTP_CONNECTION_CLOSE 1
#define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
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#define NGX_NONE 1
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#define NGX_HTTP_PARSE_HEADER_DONE 1
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#define NGX_HTTP_CLIENT_ERROR 10
#define NGX_HTTP_PARSE_INVALID_METHOD 10
#define NGX_HTTP_PARSE_INVALID_REQUEST 11
#define NGX_HTTP_PARSE_TOO_LONG_URI 12
#define NGX_HTTP_PARSE_INVALID_09_METHOD 13
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#define NGX_HTTP_PARSE_HEADER_ERROR 14
#define NGX_HTTP_PARSE_INVALID_HEADER 14
#define NGX_HTTP_PARSE_TOO_LONG_HEADER 15
#define NGX_HTTP_PARSE_NO_HOST_HEADER 16
#define NGX_HTTP_PARSE_INVALID_CL_HEADER 17
#define NGX_HTTP_PARSE_POST_WO_CL_HEADER 18
#define NGX_HTTP_PARSE_INVALID_HOST 19
#define NGX_HTTP_PARSE_HTTP_TO_HTTPS 20
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#define NGX_HTTP_OK 200
#define NGX_HTTP_PARTIAL_CONTENT 206
#define NGX_HTTP_SPECIAL_RESPONSE 300
#define NGX_HTTP_MOVED_PERMANENTLY 301
#define NGX_HTTP_MOVED_TEMPORARILY 302
#define NGX_HTTP_NOT_MODIFIED 304
#define NGX_HTTP_BAD_REQUEST 400
#define NGX_HTTP_FORBIDDEN 403
#define NGX_HTTP_NOT_FOUND 404
#define NGX_HTTP_NOT_ALLOWED 405
#define NGX_HTTP_REQUEST_TIME_OUT 408
#define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413
#define NGX_HTTP_REQUEST_URI_TOO_LARGE 414
#define NGX_HTTP_RANGE_NOT_SATISFIABLE 416
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/* Our own HTTP codes */
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#define NGX_HTTP_NGX_CODES NGX_HTTP_TO_HTTPS
/*
* We use the special code for the plain HTTP requests that are sent to
* HTTPS port to distinguish it from 4XX in an error page redirection
*/
#define NGX_HTTP_TO_HTTPS 497
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/*
* We use the special code for the requests with invalid host name
* to distinguish it from 4XX in an error page redirection
*/
#define NGX_HTTP_INVALID_HOST 498
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/*
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* HTTP does not define the code for the case when a client closed
* the connection while we are processing its request so we introduce
* own code to log such situation when a client has closed the connection
* before we even try to send the HTTP header to it
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*/
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#define NGX_HTTP_CLIENT_CLOSED_REQUEST 499
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#define NGX_HTTP_INTERNAL_SERVER_ERROR 500
#define NGX_HTTP_NOT_IMPLEMENTED 501
#define NGX_HTTP_BAD_GATEWAY 502
#define NGX_HTTP_SERVICE_UNAVAILABLE 503
#define NGX_HTTP_GATEWAY_TIME_OUT 504
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typedef enum {
NGX_HTTP_RESTRICT_HOST_OFF = 0,
NGX_HTTP_RESTRICT_HOST_ON,
NGX_HTTP_RESTRICT_HOST_CLOSE
} ngx_http_restrict_host_e;
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typedef enum {
NGX_HTTP_INITING_REQUEST_STATE = 0,
NGX_HTTP_READING_REQUEST_STATE,
NGX_HTTP_PROCESS_REQUEST_STATE,
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NGX_HTTP_CONNECT_UPSTREAM_STATE,
NGX_HTTP_WRITING_UPSTREAM_STATE,
NGX_HTTP_READING_UPSTREAM_STATE,
NGX_HTTP_WRITING_REQUEST_STATE,
NGX_HTTP_LINGERING_CLOSE_STATE,
NGX_HTTP_KEEPALIVE_STATE
} ngx_http_state_e;
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typedef struct {
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ngx_str_t name;
ngx_uint_t offset;
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} ngx_http_header_t;
typedef struct {
ngx_list_t headers;
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ngx_table_elt_t *host;
ngx_table_elt_t *connection;
ngx_table_elt_t *if_modified_since;
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ngx_table_elt_t *user_agent;
ngx_table_elt_t *referer;
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ngx_table_elt_t *content_length;
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ngx_table_elt_t *range;
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#if (NGX_HTTP_GZIP)
ngx_table_elt_t *accept_encoding;
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ngx_table_elt_t *via;
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#endif
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ngx_table_elt_t *authorization;
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ngx_table_elt_t *keep_alive;
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#if (NGX_HTTP_PROXY)
ngx_table_elt_t *x_forwarded_for;
ngx_table_elt_t *x_real_ip;
ngx_table_elt_t *x_url;
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#endif
ngx_array_t cookies;
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size_t host_name_len;
ssize_t content_length_n;
size_t connection_type;
ssize_t keep_alive_n;
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unsigned msie:1;
unsigned msie4:1;
unsigned opera:1;
unsigned gecko:1;
unsigned konqueror:1;
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} ngx_http_headers_in_t;
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typedef struct {
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off_t start;
off_t end;
ngx_str_t content_range;
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} ngx_http_range_t;
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typedef struct {
ngx_list_t headers;
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ngx_uint_t status;
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ngx_str_t status_line;
ngx_table_elt_t *server;
ngx_table_elt_t *date;
ngx_table_elt_t *content_type;
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ngx_table_elt_t *content_length;
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ngx_table_elt_t *content_encoding;
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ngx_table_elt_t *location;
ngx_table_elt_t *last_modified;
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ngx_table_elt_t *content_range;
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ngx_table_elt_t *accept_ranges;
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ngx_table_elt_t *expires;
ngx_table_elt_t *cache_control;
ngx_table_elt_t *etag;
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ngx_str_t charset;
ngx_array_t ranges;
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off_t content_length_n;
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time_t date_time;
time_t last_modified_time;
} ngx_http_headers_out_t;
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typedef struct {
ngx_temp_file_t *temp_file;
ngx_chain_t *bufs;
ngx_buf_t *buf;
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size_t rest;
void (*handler) (void *data);
void *data;
} ngx_http_request_body_t;
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struct ngx_http_cleanup_s {
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union {
struct {
ngx_fd_t fd;
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u_char *name;
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} file;
struct {
ngx_http_cache_hash_t *hash;
ngx_http_cache_entry_t *cache;
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} cache;
} data;
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unsigned valid:1;
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unsigned cache:1;
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};
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typedef struct {
ngx_http_request_t *request;
ngx_buf_t **busy;
ngx_int_t nbusy;
ngx_buf_t **free;
ngx_int_t nfree;
ngx_uint_t pipeline; /* unsigned pipeline:1; */
} ngx_http_connection_t;
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typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r);
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struct ngx_http_request_s {
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uint32_t signature; /* "HTTP" */
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ngx_connection_t *connection;
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void **ctx;
void **main_conf;
void **srv_conf;
void **loc_conf;
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ngx_http_cache_t *cache;
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ngx_file_t file;
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ngx_pool_t *pool;
ngx_buf_t *header_in;
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ngx_http_headers_in_t headers_in;
ngx_http_headers_out_t headers_out;
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ngx_http_request_body_t *request_body;
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time_t lingering_time;
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ngx_uint_t method;
ngx_uint_t http_version;
ngx_uint_t http_major;
ngx_uint_t http_minor;
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ngx_str_t request_line;
ngx_str_t uri;
ngx_str_t args;
ngx_str_t exten;
ngx_str_t unparsed_uri;
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ngx_str_t method_name;
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ngx_http_request_t *main;
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uint32_t in_addr;
ngx_uint_t port;
ngx_str_t *port_text; /* ":80" */
ngx_str_t server_name;
ngx_http_in_addr_t *virtual_names;
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ngx_uint_t phase;
ngx_int_t phase_handler;
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ngx_http_handler_pt content_handler;
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ngx_array_t cleanup;
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/* used to learn the Apache compatible response length without a header */
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size_t header_size;
size_t request_length;
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u_char *discarded_buffer;
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void **err_ctx;
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ngx_uint_t err_status;
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ngx_http_connection_t *http_connection;
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unsigned http_state:4;
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#if 0
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/* URI is not started with '/' - "GET http://" */
unsigned unusual_uri:1;
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#endif
/* URI with "/." and on Win32 with "//" */
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unsigned complex_uri:1;
/* URI with "%" */
unsigned quoted_uri:1;
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unsigned header_timeout_set:1;
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unsigned proxy:1;
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unsigned bypass_cache:1;
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unsigned no_cache:1;
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#if 0
unsigned cachable:1;
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#endif
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unsigned pipeline:1;
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unsigned plain_http:1;
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unsigned chunked:1;
unsigned header_only:1;
unsigned keepalive:1;
unsigned lingering_close:1;
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unsigned closed:1;
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unsigned filter_need_in_memory:1;
unsigned filter_ssi_need_in_memory:1;
unsigned filter_need_temporary:1;
unsigned filter_allow_ranges:1;
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#if (NGX_STAT_STUB)
unsigned stat_reading:1;
unsigned stat_writing:1;
#endif
ngx_uint_t headers_n;
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/* used to parse HTTP headers */
ngx_uint_t state;
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u_char *uri_start;
u_char *uri_end;
u_char *uri_ext;
u_char *args_start;
u_char *request_start;
u_char *request_end;
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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;
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u_char *header_name_start;
u_char *header_name_end;
u_char *header_start;
u_char *header_end;
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};
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extern ngx_http_header_t ngx_http_headers_in[];
extern ngx_http_header_t ngx_http_headers_out[];
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#endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */