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src/http/ngx_http_upstream.h  view on Meta::CPAN

    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_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;
    ngx_uint_t                       no_port;  /* unsigned no_port:1 */
};


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                       request_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;

src/http/ngx_http_upstream.h  view on Meta::CPAN

#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; /* unsigned no_port:1 */

    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;