mirror of
https://github.com/nginx/nginx.git
synced 2024-12-15 13:28:59 +08:00
347 lines
12 KiB
C
347 lines
12 KiB
C
|
|
/*
|
|
* Copyright (C) Igor Sysoev
|
|
*/
|
|
|
|
|
|
#ifndef _NGX_HTTP_UPSTREAM_H_INCLUDED_
|
|
#define _NGX_HTTP_UPSTREAM_H_INCLUDED_
|
|
|
|
|
|
#include <ngx_config.h>
|
|
#include <ngx_core.h>
|
|
#include <ngx_event.h>
|
|
#include <ngx_event_connect.h>
|
|
#include <ngx_event_pipe.h>
|
|
#include <ngx_http.h>
|
|
|
|
|
|
#define NGX_HTTP_UPSTREAM_FT_ERROR 0x00000002
|
|
#define NGX_HTTP_UPSTREAM_FT_TIMEOUT 0x00000004
|
|
#define NGX_HTTP_UPSTREAM_FT_INVALID_HEADER 0x00000008
|
|
#define NGX_HTTP_UPSTREAM_FT_HTTP_500 0x00000010
|
|
#define NGX_HTTP_UPSTREAM_FT_HTTP_502 0x00000020
|
|
#define NGX_HTTP_UPSTREAM_FT_HTTP_503 0x00000040
|
|
#define NGX_HTTP_UPSTREAM_FT_HTTP_504 0x00000080
|
|
#define NGX_HTTP_UPSTREAM_FT_HTTP_404 0x00000100
|
|
#define NGX_HTTP_UPSTREAM_FT_UPDATING 0x00000200
|
|
#define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000400
|
|
#define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00000800
|
|
#define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000
|
|
#define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000
|
|
|
|
#define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \
|
|
|NGX_HTTP_UPSTREAM_FT_HTTP_502 \
|
|
|NGX_HTTP_UPSTREAM_FT_HTTP_503 \
|
|
|NGX_HTTP_UPSTREAM_FT_HTTP_504 \
|
|
|NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
|
#define NGX_HTTP_UPSTREAM_INVALID_HEADER 40
|
|
|
|
|
|
#define NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT 0x00000002
|
|
#define NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES 0x00000004
|
|
#define NGX_HTTP_UPSTREAM_IGN_EXPIRES 0x00000008
|
|
#define NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL 0x00000010
|
|
#define NGX_HTTP_UPSTREAM_IGN_SET_COOKIE 0x00000020
|
|
|
|
|
|
typedef struct {
|
|
ngx_msec_t bl_time;
|
|
ngx_uint_t bl_state;
|
|
|
|
ngx_uint_t status;
|
|
time_t response_sec;
|
|
ngx_uint_t response_msec;
|
|
off_t response_length;
|
|
|
|
ngx_str_t *peer;
|
|
} ngx_http_upstream_state_t;
|
|
|
|
|
|
typedef struct {
|
|
ngx_hash_t headers_in_hash;
|
|
ngx_array_t upstreams;
|
|
/* ngx_http_upstream_srv_conf_t */
|
|
} ngx_http_upstream_main_conf_t;
|
|
|
|
typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t;
|
|
|
|
typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf,
|
|
ngx_http_upstream_srv_conf_t *us);
|
|
typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r,
|
|
ngx_http_upstream_srv_conf_t *us);
|
|
|
|
|
|
typedef struct {
|
|
ngx_http_upstream_init_pt init_upstream;
|
|
ngx_http_upstream_init_peer_pt init;
|
|
void *data;
|
|
} ngx_http_upstream_peer_t;
|
|
|
|
|
|
typedef struct {
|
|
ngx_addr_t *addrs;
|
|
ngx_uint_t naddrs;
|
|
ngx_uint_t weight;
|
|
ngx_uint_t max_fails;
|
|
time_t fail_timeout;
|
|
|
|
unsigned down:1;
|
|
unsigned backup:1;
|
|
} ngx_http_upstream_server_t;
|
|
|
|
|
|
#define NGX_HTTP_UPSTREAM_CREATE 0x0001
|
|
#define NGX_HTTP_UPSTREAM_WEIGHT 0x0002
|
|
#define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004
|
|
#define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008
|
|
#define NGX_HTTP_UPSTREAM_DOWN 0x0010
|
|
#define NGX_HTTP_UPSTREAM_BACKUP 0x0020
|
|
|
|
|
|
struct ngx_http_upstream_srv_conf_s {
|
|
ngx_http_upstream_peer_t peer;
|
|
void **srv_conf;
|
|
|
|
ngx_array_t *servers; /* ngx_http_upstream_server_t */
|
|
|
|
ngx_uint_t flags;
|
|
ngx_str_t host;
|
|
u_char *file_name;
|
|
ngx_uint_t line;
|
|
in_port_t port;
|
|
in_port_t default_port;
|
|
};
|
|
|
|
|
|
typedef struct {
|
|
ngx_http_upstream_srv_conf_t *upstream;
|
|
|
|
ngx_msec_t connect_timeout;
|
|
ngx_msec_t send_timeout;
|
|
ngx_msec_t read_timeout;
|
|
ngx_msec_t timeout;
|
|
|
|
size_t send_lowat;
|
|
size_t buffer_size;
|
|
|
|
size_t busy_buffers_size;
|
|
size_t max_temp_file_size;
|
|
size_t temp_file_write_size;
|
|
|
|
size_t busy_buffers_size_conf;
|
|
size_t max_temp_file_size_conf;
|
|
size_t temp_file_write_size_conf;
|
|
|
|
ngx_bufs_t bufs;
|
|
|
|
ngx_uint_t ignore_headers;
|
|
ngx_uint_t next_upstream;
|
|
ngx_uint_t store_access;
|
|
ngx_flag_t buffering;
|
|
ngx_flag_t pass_request_headers;
|
|
ngx_flag_t pass_request_body;
|
|
|
|
ngx_flag_t ignore_client_abort;
|
|
ngx_flag_t intercept_errors;
|
|
ngx_flag_t cyclic_temp_file;
|
|
|
|
ngx_path_t *temp_path;
|
|
|
|
ngx_hash_t hide_headers_hash;
|
|
ngx_array_t *hide_headers;
|
|
ngx_array_t *pass_headers;
|
|
|
|
ngx_addr_t *local;
|
|
|
|
#if (NGX_HTTP_CACHE)
|
|
ngx_shm_zone_t *cache;
|
|
|
|
ngx_uint_t cache_min_uses;
|
|
ngx_uint_t cache_use_stale;
|
|
ngx_uint_t cache_methods;
|
|
|
|
ngx_array_t *cache_valid;
|
|
ngx_array_t *cache_bypass;
|
|
ngx_array_t *no_cache;
|
|
#endif
|
|
|
|
ngx_array_t *store_lengths;
|
|
ngx_array_t *store_values;
|
|
|
|
signed store:2;
|
|
unsigned intercept_404:1;
|
|
unsigned change_buffering:1;
|
|
|
|
#if (NGX_HTTP_SSL)
|
|
ngx_ssl_t *ssl;
|
|
ngx_flag_t ssl_session_reuse;
|
|
#endif
|
|
|
|
ngx_str_t module;
|
|
} ngx_http_upstream_conf_t;
|
|
|
|
|
|
typedef struct {
|
|
ngx_str_t name;
|
|
ngx_http_header_handler_pt handler;
|
|
ngx_uint_t offset;
|
|
ngx_http_header_handler_pt copy_handler;
|
|
ngx_uint_t conf;
|
|
ngx_uint_t redirect; /* unsigned redirect:1; */
|
|
} ngx_http_upstream_header_t;
|
|
|
|
|
|
typedef struct {
|
|
ngx_list_t headers;
|
|
|
|
ngx_uint_t status_n;
|
|
ngx_str_t status_line;
|
|
|
|
ngx_table_elt_t *status;
|
|
ngx_table_elt_t *date;
|
|
ngx_table_elt_t *server;
|
|
ngx_table_elt_t *connection;
|
|
|
|
ngx_table_elt_t *expires;
|
|
ngx_table_elt_t *etag;
|
|
ngx_table_elt_t *x_accel_expires;
|
|
ngx_table_elt_t *x_accel_redirect;
|
|
ngx_table_elt_t *x_accel_limit_rate;
|
|
|
|
ngx_table_elt_t *content_type;
|
|
ngx_table_elt_t *content_length;
|
|
|
|
ngx_table_elt_t *last_modified;
|
|
ngx_table_elt_t *location;
|
|
ngx_table_elt_t *accept_ranges;
|
|
ngx_table_elt_t *www_authenticate;
|
|
|
|
#if (NGX_HTTP_GZIP)
|
|
ngx_table_elt_t *content_encoding;
|
|
#endif
|
|
|
|
off_t content_length_n;
|
|
|
|
ngx_array_t cache_control;
|
|
} ngx_http_upstream_headers_in_t;
|
|
|
|
|
|
typedef struct {
|
|
ngx_str_t host;
|
|
in_port_t port;
|
|
ngx_uint_t no_port; /* unsigned no_port:1 */
|
|
|
|
ngx_uint_t naddrs;
|
|
in_addr_t *addrs;
|
|
|
|
struct sockaddr *sockaddr;
|
|
socklen_t socklen;
|
|
|
|
ngx_resolver_ctx_t *ctx;
|
|
} ngx_http_upstream_resolved_t;
|
|
|
|
|
|
typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r,
|
|
ngx_http_upstream_t *u);
|
|
|
|
|
|
struct ngx_http_upstream_s {
|
|
ngx_http_upstream_handler_pt read_event_handler;
|
|
ngx_http_upstream_handler_pt write_event_handler;
|
|
|
|
ngx_peer_connection_t peer;
|
|
|
|
ngx_event_pipe_t *pipe;
|
|
|
|
ngx_chain_t *request_bufs;
|
|
|
|
ngx_output_chain_ctx_t output;
|
|
ngx_chain_writer_ctx_t writer;
|
|
|
|
ngx_http_upstream_conf_t *conf;
|
|
|
|
ngx_http_upstream_headers_in_t headers_in;
|
|
|
|
ngx_http_upstream_resolved_t *resolved;
|
|
|
|
ngx_buf_t buffer;
|
|
size_t length;
|
|
|
|
ngx_chain_t *out_bufs;
|
|
ngx_chain_t *busy_bufs;
|
|
ngx_chain_t *free_bufs;
|
|
|
|
ngx_int_t (*input_filter_init)(void *data);
|
|
ngx_int_t (*input_filter)(void *data, ssize_t bytes);
|
|
void *input_filter_ctx;
|
|
|
|
#if (NGX_HTTP_CACHE)
|
|
ngx_int_t (*create_key)(ngx_http_request_t *r);
|
|
#endif
|
|
ngx_int_t (*create_request)(ngx_http_request_t *r);
|
|
ngx_int_t (*reinit_request)(ngx_http_request_t *r);
|
|
ngx_int_t (*process_header)(ngx_http_request_t *r);
|
|
void (*abort_request)(ngx_http_request_t *r);
|
|
void (*finalize_request)(ngx_http_request_t *r,
|
|
ngx_int_t rc);
|
|
ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r,
|
|
ngx_table_elt_t *h, size_t prefix);
|
|
|
|
ngx_msec_t timeout;
|
|
|
|
ngx_http_upstream_state_t *state;
|
|
|
|
ngx_str_t method;
|
|
ngx_str_t schema;
|
|
ngx_str_t uri;
|
|
|
|
ngx_http_cleanup_pt *cleanup;
|
|
|
|
unsigned store:1;
|
|
unsigned cacheable:1;
|
|
unsigned accel:1;
|
|
unsigned ssl:1;
|
|
#if (NGX_HTTP_CACHE)
|
|
unsigned cache_status:3;
|
|
#endif
|
|
|
|
unsigned buffering:1;
|
|
|
|
unsigned request_sent:1;
|
|
unsigned header_sent:1;
|
|
};
|
|
|
|
|
|
typedef struct {
|
|
ngx_uint_t status;
|
|
ngx_uint_t mask;
|
|
} ngx_http_upstream_next_t;
|
|
|
|
|
|
ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
|
ngx_int_t ngx_http_upstream_create(ngx_http_request_t *r);
|
|
void ngx_http_upstream_init(ngx_http_request_t *r);
|
|
ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf,
|
|
ngx_url_t *u, ngx_uint_t flags);
|
|
char *ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
void *conf);
|
|
ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
ngx_str_t *default_hide_headers, ngx_hash_init_t *hash);
|
|
|
|
|
|
#define ngx_http_conf_upstream_srv_conf(uscf, module) \
|
|
uscf->srv_conf[module.ctx_index]
|
|
|
|
|
|
extern ngx_module_t ngx_http_upstream_module;
|
|
extern ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[];
|
|
extern ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[];
|
|
|
|
|
|
#endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */
|