new file mode 100644
--- /dev/null
+++ b/src/http/ngx_http_core_module.h
@@ -0,0 +1,214 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#ifndef _NGX_HTTP_CORE_H_INCLUDED_
+#define _NGX_HTTP_CORE_H_INCLUDED_
+
+
+#include <ngx_string.h>
+#include <ngx_array.h>
+#include <ngx_http.h>
+
+
+typedef struct {
+    in_addr_t  addr;
+    in_port_t  port;
+    int        family;
+    ngx_str_t  file_name;
+    int        line;
+
+    unsigned   default_server:1;
+} ngx_http_listen_t;
+
+
+typedef enum {
+    NGX_HTTP_REWRITE_PHASE = 0,
+
+    NGX_HTTP_FIND_CONFIG_PHASE,
+
+    NGX_HTTP_ACCESS_PHASE,
+    NGX_HTTP_CONTENT_PHASE,
+
+    NGX_HTTP_LAST_PHASE
+} ngx_http_phases;
+
+
+typedef struct {
+    ngx_array_t          handlers;
+    ngx_int_t            type;                /* NGX_OK, NGX_DECLINED */
+} ngx_http_phase_t;
+
+
+typedef struct {
+    ngx_array_t       servers;         /* array of ngx_http_core_srv_conf_t */
+
+    ngx_http_phase_t  phases[NGX_HTTP_LAST_PHASE];
+    ngx_array_t       index_handlers;
+
+    size_t            max_server_name_len;
+} ngx_http_core_main_conf_t;
+
+
+typedef struct {
+    /*
+     * array of ngx_http_core_loc_conf_t, used in the translation handler
+     * and in the merge phase
+     */
+    ngx_array_t           locations;
+
+    /* "listen", array of ngx_http_listen_t */
+    ngx_array_t           listen;
+
+    /* "server_name", array of ngx_http_server_name_t */
+    ngx_array_t           server_names;
+
+    /* server ctx */
+    ngx_http_conf_ctx_t  *ctx;
+
+    size_t                connection_pool_size;
+    size_t                request_pool_size;
+    size_t                client_header_buffer_size;
+
+    ngx_bufs_t            large_client_header_buffers;
+
+    ngx_msec_t            post_accept_timeout;
+    ngx_msec_t            client_header_timeout;
+
+    ngx_uint_t            restrict_host_names;
+} ngx_http_core_srv_conf_t;
+
+
+/* list of structures to find core_srv_conf quickly at run time */
+
+typedef struct {
+    in_port_t     port;
+    ngx_str_t     port_text;
+    ngx_array_t   addrs;       /* array of ngx_http_in_addr_t */
+} ngx_http_in_port_t;
+
+
+typedef struct {
+    in_addr_t                  addr;
+    ngx_array_t                names;     /* array of ngx_http_server_name_t */
+    ngx_http_core_srv_conf_t  *core_srv_conf;  /* default server conf
+                                                  for this address:port */
+
+    unsigned                   default_server:1;
+} ngx_http_in_addr_t;
+
+
+typedef struct {
+    ngx_str_t                  name;
+    ngx_http_core_srv_conf_t  *core_srv_conf; /* virtual name server conf */
+} ngx_http_server_name_t;
+
+
+#define NGX_HTTP_TYPES_HASH_PRIME  13
+
+#define ngx_http_types_hash_key(key, ext)                                   \
+        {                                                                   \
+            u_int n;                                                        \
+            for (key = 0, n = 0; n < ext.len; n++) {                        \
+                key += ext.data[n];                                         \
+            }                                                               \
+            key %= NGX_HTTP_TYPES_HASH_PRIME;                               \
+        }
+
+typedef struct {
+    ngx_str_t  exten;
+    ngx_str_t  type;
+} ngx_http_type_t;
+
+
+typedef struct {
+    ngx_int_t  status;
+    ngx_int_t  overwrite;
+    ngx_str_t  uri;
+} ngx_http_err_page_t;
+
+
+typedef struct ngx_http_core_loc_conf_s  ngx_http_core_loc_conf_t;
+
+struct ngx_http_core_loc_conf_s {
+    ngx_str_t     name;          /* location name */
+
+#if (HAVE_PCRE)
+    ngx_regex_t  *regex;
+#endif
+
+    unsigned      exact_match:1;
+    unsigned      auto_redirect:1;
+    unsigned      alias:1;
+
+    /* array of inclusive ngx_http_core_loc_conf_t */
+    ngx_array_t   locations;
+
+    /* pointer to the modules' loc_conf */
+    void        **loc_conf ;
+
+    ngx_http_handler_pt  handler;
+
+    ngx_str_t     root;                    /* root, alias */
+
+    ngx_array_t  *types;
+    ngx_str_t     default_type;
+
+    size_t        client_max_body_size;    /* client_max_body_size */
+    size_t        client_body_buffer_size; /* client_body_buffer_size */
+    size_t        send_lowat;              /* send_lowat */
+    size_t        postpone_output;         /* postpone_output */
+    size_t        limit_rate;              /* limit_rate */
+
+    ngx_msec_t    client_body_timeout;     /* client_body_timeout */
+    ngx_msec_t    send_timeout;            /* send_timeout */
+    ngx_msec_t    keepalive_timeout;       /* keepalive_timeout */
+    ngx_msec_t    lingering_time;          /* lingering_time */
+    ngx_msec_t    lingering_timeout;       /* lingering_timeout */
+
+    time_t        keepalive_header;        /* keepalive_timeout */
+
+    ngx_flag_t    sendfile;                /* sendfile */
+    ngx_flag_t    tcp_nopush;              /* tcp_nopush */
+    ngx_flag_t    reset_timedout_connection; /* reset_timedout_connection */
+    ngx_flag_t    msie_padding;            /* msie_padding */
+
+    ngx_array_t  *error_pages;             /* error_page */
+
+    ngx_http_cache_hash_t  *open_files;
+
+    ngx_log_t    *err_log;
+
+    ngx_http_core_loc_conf_t  *prev_location;
+};
+
+
+extern ngx_http_module_t  ngx_http_core_module_ctx;
+extern ngx_module_t  ngx_http_core_module;
+
+extern int ngx_http_max_module;
+
+
+
+ngx_int_t ngx_http_find_location_config(ngx_http_request_t *r);
+ngx_int_t ngx_http_core_translate_handler(ngx_http_request_t *r);
+
+ngx_int_t ngx_http_set_content_type(ngx_http_request_t *r);
+ngx_int_t ngx_http_set_exten(ngx_http_request_t *r);
+
+ngx_int_t ngx_http_internal_redirect(ngx_http_request_t *r,
+                                     ngx_str_t *uri, ngx_str_t *args);
+
+
+typedef ngx_int_t (*ngx_http_output_header_filter_pt)(ngx_http_request_t *r);
+typedef ngx_int_t (*ngx_http_output_body_filter_pt)
+                                   (ngx_http_request_t *r, ngx_chain_t *chain);
+
+
+ngx_int_t ngx_http_output_filter(ngx_http_request_t *r, ngx_chain_t *chain);
+ngx_int_t ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *chain);
+
+
+#endif /* _NGX_HTTP_CORE_H_INCLUDED_ */