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src/http/ngx_http_upstream.h - nginx-1.7.10
Data types defined
Macros defined
Source code
- #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_403 0x00000100
- #define NGX_HTTP_UPSTREAM_FT_HTTP_404 0x00000200
- #define NGX_HTTP_UPSTREAM_FT_UPDATING 0x00000400
- #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000800
- #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00001000
- #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_403 \
- |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
- #define NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE 0x00000040
- #define NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING 0x00000080
- #define NGX_HTTP_UPSTREAM_IGN_XA_CHARSET 0x00000100
- #define NGX_HTTP_UPSTREAM_IGN_VARY 0x00000200
- 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;
- time_t header_sec;
- ngx_uint_t header_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_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_str_t name;
- 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_uint_t flags;
- ngx_str_t host;
- u_char *file_name;
- ngx_uint_t line;
- in_port_t port;
- in_port_t default_port;
- ngx_uint_t no_port;
- };
- typedef struct {
- ngx_addr_t *addr;
- ngx_http_complex_value_t *value;
- } ngx_http_upstream_local_t;
- 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;
- ngx_msec_t next_upstream_timeout;
- size_t send_lowat;
- size_t buffer_size;
- size_t limit_rate;
- 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_uint_t next_upstream_tries;
- 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_flag_t force_ranges;
- ngx_path_t *temp_path;
- ngx_hash_t hide_headers_hash;
- ngx_array_t *hide_headers;
- ngx_array_t *pass_headers;
- ngx_http_upstream_local_t *local;
- #if (NGX_HTTP_CACHE)
- ngx_shm_zone_t *cache_zone;
- ngx_http_complex_value_t *cache_value;
- ngx_uint_t cache_min_uses;
- ngx_uint_t cache_use_stale;
- ngx_uint_t cache_methods;
- ngx_flag_t cache_lock;
- ngx_msec_t cache_lock_timeout;
- ngx_msec_t cache_lock_age;
- ngx_flag_t cache_revalidate;
- 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;
- #if (NGX_HTTP_CACHE)
- signed cache:2;
- #endif
- 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;
- ngx_http_complex_value_t *ssl_name;
- ngx_flag_t ssl_server_name;
- ngx_flag_t ssl_verify;
- #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;
- } 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;
- ngx_table_elt_t *transfer_encoding;
- ngx_table_elt_t *vary;
- #if (NGX_HTTP_GZIP)
- ngx_table_elt_t *content_encoding;
- #endif
- ngx_array_t cache_control;
- ngx_array_t cookies;
- off_t content_length_n;
- time_t last_modified_time;
- unsigned connection_close:1;
- unsigned chunked:1;
- } ngx_http_upstream_headers_in_t;
- typedef struct {
- ngx_str_t host;
- in_port_t port;
- ngx_uint_t no_port;
- ngx_uint_t naddrs;
- ngx_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;
- #if (NGX_HTTP_CACHE)
- ngx_array_t *caches;
- #endif
- ngx_http_upstream_headers_in_t headers_in;
- ngx_http_upstream_resolved_t *resolved;
- ngx_buf_t from_client;
- ngx_buf_t buffer;
- off_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_int_t (*rewrite_cookie)(ngx_http_request_t *r,
- ngx_table_elt_t *h);
- ngx_msec_t timeout;
- ngx_http_upstream_state_t *state;
- ngx_str_t method;
- ngx_str_t schema;
- ngx_str_t uri;
- #if (NGX_HTTP_SSL)
- ngx_str_t ssl_name;
- #endif
- 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 keepalive:1;
- unsigned upgrade:1;
- unsigned request_sent:1;
- unsigned header_sent:1;
- };
- typedef struct {
- ngx_uint_t status;
- ngx_uint_t mask;
- } ngx_http_upstream_next_t;
- typedef struct {
- ngx_str_t key;
- ngx_str_t value;
- ngx_uint_t skip_empty;
- } ngx_http_upstream_param_t;
- ngx_int_t ngx_http_upstream_cookie_variable(ngx_http_request_t *r,
- ngx_http_variable_value_t *v, uintptr_t data);
- 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);
- char *ngx_http_upstream_param_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
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