#ifndef MOD_PROXY_H

#define MOD_PROXY_H

#include "apr_hooks.h"

#include "apr.h"

#include "apr_lib.h"

#include "apr_strings.h"

#include "apr_buckets.h"

#include "apr_md5.h"

#include "apr_network_io.h"

#include "apr_pools.h"

#include "apr_strings.h"

#include "apr_uri.h"

#include "apr_date.h"

#include "apr_strmatch.h"

#include "apr_fnmatch.h"

#include "apr_reslist.h"

#define APR_WANT_STRFUNC

#include "apr_want.h"

#include "apr_uuid.h"

#include "util_mutex.h"

#include "apr_global_mutex.h"

#include "apr_thread_mutex.h"

#include "httpd.h"

#include "http_config.h"

#include "ap_config.h"

#include "http_core.h"

#include "http_protocol.h"

#include "http_request.h"

#include "http_vhost.h"

#include "http_main.h"

#include "http_log.h"

#include "http_connection.h"

#include "util_filter.h"

#include "util_ebcdic.h"

#include "ap_provider.h"

#include "ap_slotmem.h"

#if APR_HAVE_NETINET_IN_H

#include <netinet/in.h>

#endif

#if APR_HAVE_ARPA_INET_H

#include <arpa/inet.h>

#endif

enum enctype {

enc_path, enc_search, enc_user, enc_fpath, enc_parm

};

#define BALANCER_PREFIX "balancer://"

#if APR_CHARSET_EBCDIC

#define CRLF "\r\n"

#else /*APR_CHARSET_EBCDIC*/

#define CRLF "\015\012"

#endif /*APR_CHARSET_EBCDIC*/

#define DEFAULT_MAX_FORWARDS -1

struct proxy_remote {

const char *scheme; /* the schemes handled by this proxy, or '*' */

const char *protocol; /* the scheme used to talk to this proxy */

const char *hostname; /* the hostname of this proxy */

ap_regex_t *regexp; /* compiled regex (if any) for the remote */

int use_regex; /* simple boolean. True if we have a regex pattern */

apr_port_t port; /* the port for this proxy */

};

#define PROXYPASS_NOCANON 0x01

#define PROXYPASS_INTERPOLATE 0x02

struct proxy_alias {

const char *real;

const char *fake;

ap_regex_t *regex;

unsigned int flags;

};

struct dirconn_entry {

char *name;

struct in_addr addr, mask;

struct apr_sockaddr_t *hostaddr;

int (*matcher) (struct dirconn_entry * This, request_rec *r);

};

struct noproxy_entry {

const char *name;

struct apr_sockaddr_t *addr;

};

typedef struct proxy_balancer proxy_balancer;

typedef struct proxy_worker proxy_worker;

typedef struct proxy_conn_pool proxy_conn_pool;

typedef struct proxy_balancer_method proxy_balancer_method;

typedef struct {

apr_array_header_t *proxies;

apr_array_header_t *sec_proxy;

apr_array_header_t *aliases;

apr_array_header_t *noproxies;

apr_array_header_t *dirconn;

apr_array_header_t *workers; /* non-balancer workers, eg ProxyPass http://example.com */

apr_array_header_t *balancers; /* list of balancers @ config time */

proxy_worker *forward; /* forward proxy worker */

proxy_worker *reverse; /* reverse "module-driven" proxy worker */

const char *domain; /* domain name to use in absence of a domain name in the request */

const char *id;

apr_pool_t *pool; /* Pool used for allocating this struct */

int req; /* true if proxy requests are enabled */

int max_balancers; /* maximum number of allowed balancers */

int bgrowth; /* number of post-config balancers can added */

enum {

via_off,

via_on,

via_block,

via_full

} viaopt; /* how to deal with proxy Via: headers */

apr_size_t recv_buffer_size;

apr_size_t io_buffer_size;

long maxfwd;

apr_interval_time_t timeout;

enum {

bad_error,

bad_ignore,

bad_body

} badopt; /* how to deal with bad headers */

enum {

status_off,

status_on,

status_full

} proxy_status; /* Status display options */

apr_sockaddr_t *source_address;

apr_global_mutex_t *mutex; /* global lock (needed??) */

ap_slotmem_instance_t *bslot; /* balancers shm data - runtime */

ap_slotmem_provider_t *storage;

unsigned int req_set:1;

unsigned int viaopt_set:1;

unsigned int recv_buffer_size_set:1;

unsigned int io_buffer_size_set:1;

unsigned int maxfwd_set:1;

unsigned int timeout_set:1;

unsigned int badopt_set:1;

unsigned int proxy_status_set:1;

unsigned int source_address_set:1;

unsigned int bgrowth_set:1;

} proxy_server_conf;

typedef struct {

const char *p; /* The path */

ap_regex_t *r; /* Is this a regex? */

apr_array_header_t *raliases;

apr_array_header_t* cookie_paths;

apr_array_header_t* cookie_domains;

signed char p_is_fnmatch; /* Is the path an fnmatch candidate? */

signed char interpolate_env;

struct proxy_alias *alias;

/**

unsigned int error_override:1;

unsigned int preserve_host:1;

unsigned int preserve_host_set:1;

unsigned int error_override_set:1;

unsigned int alias_set:1;

unsigned int add_forwarded_headers:1;

} proxy_dir_conf;

typedef struct {

apr_array_header_t *raliases;

apr_array_header_t* cookie_paths;

apr_array_header_t* cookie_domains;

} proxy_req_conf;

typedef struct {

conn_rec *connection;

request_rec *r; /* Request record of the backend request

proxy_worker *worker; /* Connection pool this connection belongs to */

apr_pool_t *pool; /* Subpool for hostname and addr data */

const char *hostname;

apr_sockaddr_t *addr; /* Preparsed remote address info */

apr_pool_t *scpool; /* Subpool used for socket and connection data */

apr_socket_t *sock; /* Connection socket */

void *data; /* per scheme connection data */

void *forward; /* opaque forward proxy data */

apr_uint32_t flags; /* Connection flags */

apr_port_t port;

unsigned int is_ssl:1;

unsigned int close:1; /* Close 'this' connection */

unsigned int need_flush:1; /* Flag to decide whether we need to flush the

unsigned int inreslist:1; /* connection in apr_reslist? */

} proxy_conn_rec;

typedef struct {

float cache_completion; /* completion percentage */

int content_length; /* length of the content */

} proxy_completion;

struct proxy_conn_pool {

apr_pool_t *pool; /* The pool used in constructor and destructor calls */

apr_sockaddr_t *addr; /* Preparsed remote address info */

apr_reslist_t *res; /* Connection resource list */

proxy_conn_rec *conn; /* Single connection for prefork mpm */

};

#define PROXY_WORKER_INITIALIZED 0x0001

#define PROXY_WORKER_IGNORE_ERRORS 0x0002

#define PROXY_WORKER_DRAIN 0x0004

#define PROXY_WORKER_IN_SHUTDOWN 0x0010

#define PROXY_WORKER_DISABLED 0x0020

#define PROXY_WORKER_STOPPED 0x0040

#define PROXY_WORKER_IN_ERROR 0x0080

#define PROXY_WORKER_HOT_STANDBY 0x0100

#define PROXY_WORKER_FREE 0x0200

#define PROXY_WORKER_INITIALIZED_FLAG 'O'

#define PROXY_WORKER_IGNORE_ERRORS_FLAG 'I'

#define PROXY_WORKER_DRAIN_FLAG 'N'

#define PROXY_WORKER_IN_SHUTDOWN_FLAG 'U'

#define PROXY_WORKER_DISABLED_FLAG 'D'

#define PROXY_WORKER_STOPPED_FLAG 'S'

#define PROXY_WORKER_IN_ERROR_FLAG 'E'

#define PROXY_WORKER_HOT_STANDBY_FLAG 'H'

#define PROXY_WORKER_FREE_FLAG 'F'

#define PROXY_WORKER_NOT_USABLE_BITMAP ( PROXY_WORKER_IN_SHUTDOWN | \

PROXY_WORKER_DISABLED | PROXY_WORKER_STOPPED | PROXY_WORKER_IN_ERROR )

#define PROXY_WORKER_IS_INITIALIZED(f) ( (f)->s->status & PROXY_WORKER_INITIALIZED )

#define PROXY_WORKER_IS_STANDBY(f) ( (f)->s->status & PROXY_WORKER_HOT_STANDBY )

#define PROXY_WORKER_IS_USABLE(f) ( ( !( (f)->s->status & PROXY_WORKER_NOT_USABLE_BITMAP) ) && \

PROXY_WORKER_IS_INITIALIZED(f) )

#define PROXY_WORKER_IS_DRAINING(f) ( (f)->s->status & PROXY_WORKER_DRAIN )

#define PROXY_WORKER_DEFAULT_RETRY 60

#define PROXY_WORKER_MAX_SCHEME_SIZE 16

#define PROXY_WORKER_MAX_ROUTE_SIZE 64

#define PROXY_BALANCER_MAX_ROUTE_SIZE PROXY_WORKER_MAX_ROUTE_SIZE

#define PROXY_WORKER_MAX_NAME_SIZE 96

#define PROXY_BALANCER_MAX_NAME_SIZE PROXY_WORKER_MAX_NAME_SIZE

#define PROXY_WORKER_MAX_HOSTNAME_SIZE 64

#define PROXY_BALANCER_MAX_HOSTNAME_SIZE PROXY_WORKER_MAX_HOSTNAME_SIZE

#define PROXY_BALANCER_MAX_STICKY_SIZE 64

#define PROXY_MAX_PROVIDER_NAME_SIZE 16

#define PROXY_STRNCPY(dst, src) ap_proxy_strncpy((dst), (src), (sizeof(dst)))

#define PROXY_COPY_CONF_PARAMS(w, c) \

do { \

(w)->s->timeout = (c)->timeout; \

(w)->s->timeout_set = (c)->timeout_set; \

(w)->s->recv_buffer_size = (c)->recv_buffer_size; \

(w)->s->recv_buffer_size_set = (c)->recv_buffer_size_set; \

(w)->s->io_buffer_size = (c)->io_buffer_size; \

(w)->s->io_buffer_size_set = (c)->io_buffer_size_set; \

} while (0)

typedef struct {

char name[PROXY_WORKER_MAX_NAME_SIZE];

char scheme[PROXY_WORKER_MAX_SCHEME_SIZE]; /* scheme to use ajp|http|https */

char hostname[PROXY_WORKER_MAX_HOSTNAME_SIZE]; /* remote backend address */

char route[PROXY_WORKER_MAX_ROUTE_SIZE]; /* balancing route */

char redirect[PROXY_WORKER_MAX_ROUTE_SIZE]; /* temporary balancing redirection route */

char flusher[PROXY_WORKER_MAX_SCHEME_SIZE]; /* flush provider used by mod_proxy_fdpass */

int lbset; /* load balancer cluster set */

int retries; /* number of retries on this worker */

int lbstatus; /* Current lbstatus */

int lbfactor; /* dynamic lbfactor */

int min; /* Desired minimum number of available connections */

int smax; /* Soft maximum on the total number of connections */

int hmax; /* Hard maximum on the total number of connections */

int flush_wait; /* poll wait time in microseconds if flush_auto */

int index; /* shm array index */

unsigned int hash; /* hash of worker name */

unsigned int status; /* worker status bitfield */

enum {

flush_off,

flush_on,

flush_auto

} flush_packets; /* control AJP flushing */

apr_time_t updated; /* timestamp of last update */

apr_time_t error_time; /* time of the last error */

apr_interval_time_t ttl; /* maximum amount of time in seconds a connection

apr_interval_time_t retry; /* retry interval */

apr_interval_time_t timeout; /* connection timeout */

apr_interval_time_t acquire; /* acquire timeout when the maximum number of connections is exceeded */

apr_interval_time_t ping_timeout;

apr_interval_time_t conn_timeout;

apr_size_t recv_buffer_size;

apr_size_t io_buffer_size;

apr_size_t elected; /* Number of times the worker was elected */

apr_size_t busy; /* busyness factor */

apr_port_t port;

apr_off_t transferred;/* Number of bytes transferred to remote */

apr_off_t read; /* Number of bytes read from remote */

void *context; /* general purpose storage */

unsigned int keepalive:1;

unsigned int disablereuse:1;

unsigned int is_address_reusable:1;

unsigned int retry_set:1;

unsigned int timeout_set:1;

unsigned int acquire_set:1;

unsigned int ping_timeout_set:1;

unsigned int conn_timeout_set:1;

unsigned int recv_buffer_size_set:1;

unsigned int io_buffer_size_set:1;

unsigned int keepalive_set:1;

unsigned int disablereuse_set:1;

unsigned int was_malloced:1;

} proxy_worker_shared;

#define ALIGNED_PROXY_WORKER_SHARED_SIZE (APR_ALIGN_DEFAULT(sizeof(proxy_worker_shared)))

struct proxy_worker {

unsigned int hash; /* hash of worker name */

unsigned int local_status; /* status of per-process worker */

proxy_conn_pool *cp; /* Connection pool to use */

proxy_worker_shared *s; /* Shared data */

proxy_balancer *balancer; /* which balancer am I in? */

apr_thread_mutex_t *tmutex; /* Thread lock for updating address cache */

void *context; /* general purpose storage */

};

#define PROXY_FLUSH_WAIT 10000

typedef struct {

char sticky_path[PROXY_BALANCER_MAX_STICKY_SIZE]; /* URL sticky session identifier */

char sticky[PROXY_BALANCER_MAX_STICKY_SIZE]; /* sticky session identifier */

char lbpname[PROXY_MAX_PROVIDER_NAME_SIZE]; /* lbmethod provider name */

char nonce[APR_UUID_FORMATTED_LENGTH + 1];

char name[PROXY_BALANCER_MAX_NAME_SIZE];

char sname[PROXY_BALANCER_MAX_NAME_SIZE];

char vpath[PROXY_BALANCER_MAX_ROUTE_SIZE];

char vhost[PROXY_BALANCER_MAX_HOSTNAME_SIZE];

apr_interval_time_t timeout; /* Timeout for waiting on free connection */

apr_time_t wupdated; /* timestamp of last change to workers list */

int max_attempts; /* Number of attempts before failing */

int index; /* shm array index */

int hash;

unsigned int sticky_force:1; /* Disable failover for sticky sessions */

unsigned int scolonsep:1; /* true if ';' seps sticky session paths */

unsigned int max_attempts_set:1;

unsigned int was_malloced:1;

unsigned int need_reset:1;

unsigned int vhosted:1;

} proxy_balancer_shared;

#define ALIGNED_PROXY_BALANCER_SHARED_SIZE (APR_ALIGN_DEFAULT(sizeof(proxy_balancer_shared)))

struct proxy_balancer {

apr_array_header_t *workers; /* initially configured workers */

apr_array_header_t *errstatuses; /* statuses to force members into error */

ap_slotmem_instance_t *wslot; /* worker shm data - runtime */

ap_slotmem_provider_t *storage;

int growth; /* number of post-config workers can added */

int max_workers; /* maximum number of allowed workers */

int hash;

apr_time_t wupdated; /* timestamp of last change to workers list */

proxy_balancer_method *lbmethod;

apr_global_mutex_t *gmutex; /* global lock for updating list of workers */

apr_thread_mutex_t *tmutex; /* Thread lock for updating shm */

proxy_server_conf *sconf;

void *context; /* general purpose storage */

proxy_balancer_shared *s; /* Shared data */

};

struct proxy_balancer_method {

const char *name; /* name of the load balancer method*/

proxy_worker *(*finder)(proxy_balancer *balancer,

request_rec *r);

void *context; /* general purpose storage */

apr_status_t (*reset)(proxy_balancer *balancer, server_rec *s);

apr_status_t (*age)(proxy_balancer *balancer, server_rec *s);

apr_status_t (*updatelbstatus)(proxy_balancer *balancer, proxy_worker *elected, server_rec *s);

};

#define PROXY_THREAD_LOCK(x) ( (x) && (x)->tmutex ? apr_thread_mutex_lock((x)->tmutex) : APR_SUCCESS)

#define PROXY_THREAD_UNLOCK(x) ( (x) && (x)->tmutex ? apr_thread_mutex_unlock((x)->tmutex) : APR_SUCCESS)

#define PROXY_GLOBAL_LOCK(x) ( (x) && (x)->gmutex ? apr_global_mutex_lock((x)->gmutex) : APR_SUCCESS)

#define PROXY_GLOBAL_UNLOCK(x) ( (x) && (x)->gmutex ? apr_global_mutex_unlock((x)->gmutex) : APR_SUCCESS)

#if !defined(WIN32)

#define PROXY_DECLARE(type) type

#define PROXY_DECLARE_NONSTD(type) type

#define PROXY_DECLARE_DATA

#elif defined(PROXY_DECLARE_STATIC)

#define PROXY_DECLARE(type) type __stdcall

#define PROXY_DECLARE_NONSTD(type) type

#define PROXY_DECLARE_DATA

#elif defined(PROXY_DECLARE_EXPORT)

#define PROXY_DECLARE(type) __declspec(dllexport) type __stdcall

#define PROXY_DECLARE_NONSTD(type) __declspec(dllexport) type

#define PROXY_DECLARE_DATA __declspec(dllexport)

#else

#define PROXY_DECLARE(type) __declspec(dllimport) type __stdcall

#define PROXY_DECLARE_NONSTD(type) __declspec(dllimport) type

#define PROXY_DECLARE_DATA __declspec(dllimport)

#endif

#define PROXY_OPTIONAL_HOOK(name,fn,pre,succ,order) \

APR_OPTIONAL_HOOK(proxy,name,fn,pre,succ,order)

APR_DECLARE_EXTERNAL_HOOK(proxy, PROXY, int, scheme_handler, (request_rec *r,

proxy_worker *worker, proxy_server_conf *conf, char *url,

const char *proxyhost, apr_port_t proxyport))

APR_DECLARE_EXTERNAL_HOOK(proxy, PROXY, int, canon_handler, (request_rec *r,

char *url))

APR_DECLARE_EXTERNAL_HOOK(proxy, PROXY, int, create_req, (request_rec *r, request_rec *pr))

APR_DECLARE_EXTERNAL_HOOK(proxy, PROXY, int, fixups, (request_rec *r))

APR_DECLARE_EXTERNAL_HOOK(proxy, PROXY, int, pre_request, (proxy_worker **worker,

proxy_balancer **balancer,

request_rec *r,

proxy_server_conf *conf, char **url))

APR_DECLARE_EXTERNAL_HOOK(proxy, PROXY, int, post_request, (proxy_worker *worker,

proxy_balancer *balancer, request_rec *r,

proxy_server_conf *conf))

APR_DECLARE_EXTERNAL_HOOK(proxy, PROXY, int, request_status,

(int *status, request_rec *r))

PROXY_DECLARE(apr_status_t) ap_proxy_strncpy(char *dst, const char *src, size_t dlen);

PROXY_DECLARE(request_rec *) ap_proxy_make_fake_req(conn_rec *c, request_rec *r);

PROXY_DECLARE(int) ap_proxy_hex2c(const char *x);

PROXY_DECLARE(void) ap_proxy_c2hex(int ch, char *x);

PROXY_DECLARE(char *)ap_proxy_canonenc(apr_pool_t *p, const char *x, int len, enum enctype t,

int forcedec, int proxyreq);

PROXY_DECLARE(char *)ap_proxy_canon_netloc(apr_pool_t *p, char **const urlp, char **userp,

char **passwordp, char **hostp, apr_port_t *port);

PROXY_DECLARE(const char *)ap_proxy_date_canon(apr_pool_t *p, const char *x);

PROXY_DECLARE(int) ap_proxy_liststr(const char *list, const char *val);

PROXY_DECLARE(int) ap_proxy_hex2sec(const char *x);

PROXY_DECLARE(void) ap_proxy_sec2hex(int t, char *y);

PROXY_DECLARE(int) ap_proxyerror(request_rec *r, int statuscode, const char *message);

PROXY_DECLARE(int) ap_proxy_is_ipaddr(struct dirconn_entry *This, apr_pool_t *p);

PROXY_DECLARE(int) ap_proxy_is_domainname(struct dirconn_entry *This, apr_pool_t *p);

PROXY_DECLARE(int) ap_proxy_is_hostname(struct dirconn_entry *This, apr_pool_t *p);

PROXY_DECLARE(int) ap_proxy_is_word(struct dirconn_entry *This, apr_pool_t *p);

PROXY_DECLARE(int) ap_proxy_checkproxyblock(request_rec *r, proxy_server_conf *conf, apr_sockaddr_t *uri_addr);

PROXY_DECLARE(int) ap_proxy_pre_http_request(conn_rec *c, request_rec *r);

PROXY_DECLARE(apr_status_t) ap_proxy_string_read(conn_rec *c, apr_bucket_brigade *bb, char *buff, size_t bufflen, int *eos);

PROXY_DECLARE(void) ap_proxy_table_unmerge(apr_pool_t *p, apr_table_t *t, char *key);

PROXY_DECLARE(int) ap_proxy_connect_to_backend(apr_socket_t **, const char *, apr_sockaddr_t *, const char *, proxy_server_conf *, request_rec *);

PROXY_DECLARE(apr_status_t) ap_proxy_ssl_connection_cleanup(proxy_conn_rec *conn,

request_rec *r);

PROXY_DECLARE(int) ap_proxy_ssl_enable(conn_rec *c);

PROXY_DECLARE(int) ap_proxy_ssl_disable(conn_rec *c);

PROXY_DECLARE(int) ap_proxy_conn_is_https(conn_rec *c);

PROXY_DECLARE(const char *) ap_proxy_ssl_val(apr_pool_t *p, server_rec *s, conn_rec *c, request_rec *r, const char *var);

PROXY_DECLARE(const char *) ap_proxy_location_reverse_map(request_rec *r, proxy_dir_conf *conf, const char *url);

PROXY_DECLARE(const char *) ap_proxy_cookie_reverse_map(request_rec *r, proxy_dir_conf *conf, const char *str);

#if !defined(WIN32)

typedef const char *(*ap_proxy_header_reverse_map_fn)(request_rec *,

proxy_dir_conf *, const char *);

#elif defined(PROXY_DECLARE_STATIC)

typedef const char *(__stdcall *ap_proxy_header_reverse_map_fn)(request_rec *,

proxy_dir_conf *, const char *);

#elif defined(PROXY_DECLARE_EXPORT)

typedef __declspec(dllexport) const char *

(__stdcall *ap_proxy_header_reverse_map_fn)(request_rec *,

proxy_dir_conf *, const char *);

#else

typedef __declspec(dllimport) const char *

(__stdcall *ap_proxy_header_reverse_map_fn)(request_rec *,

proxy_dir_conf *, const char *);

#endif

PROXY_DECLARE(proxy_worker *) ap_proxy_get_worker(apr_pool_t *p,

proxy_balancer *balancer,

proxy_server_conf *conf,

const char *url);

PROXY_DECLARE(char *) ap_proxy_define_worker(apr_pool_t *p,

proxy_worker **worker,

proxy_balancer *balancer,

proxy_server_conf *conf,

const char *url,

int do_malloc);

PROXY_DECLARE(apr_status_t) ap_proxy_share_worker(proxy_worker *worker,

proxy_worker_shared *shm,

int i);

PROXY_DECLARE(apr_status_t) ap_proxy_initialize_worker(proxy_worker *worker,

server_rec *s,

apr_pool_t *p);

PROXY_DECLARE(int) ap_proxy_valid_balancer_name(char *name, int i);

PROXY_DECLARE(proxy_balancer *) ap_proxy_get_balancer(apr_pool_t *p,

proxy_server_conf *conf,

const char *url);

PROXY_DECLARE(char *) ap_proxy_define_balancer(apr_pool_t *p,

proxy_balancer **balancer,

proxy_server_conf *conf,

const char *url,

const char *alias,

int do_malloc);

PROXY_DECLARE(apr_status_t) ap_proxy_share_balancer(proxy_balancer *balancer,

proxy_balancer_shared *shm,

int i);

PROXY_DECLARE(apr_status_t) ap_proxy_initialize_balancer(proxy_balancer *balancer,

server_rec *s,

apr_pool_t *p);

PROXY_DECLARE(int) ap_proxy_pre_request(proxy_worker **worker,

proxy_balancer **balancer,

request_rec *r,

proxy_server_conf *conf,

char **url);

PROXY_DECLARE(int) ap_proxy_post_request(proxy_worker *worker,

proxy_balancer *balancer,

request_rec *r,

proxy_server_conf *conf);

PROXY_DECLARE(int) ap_proxy_determine_connection(apr_pool_t *p, request_rec *r,

proxy_server_conf *conf,

proxy_worker *worker,

proxy_conn_rec *conn,

apr_uri_t *uri,

char **url,

const char *proxyname,

apr_port_t proxyport,

char *server_portstr,

int server_portstr_size);

PROXY_DECLARE(int) ap_proxy_retry_worker(const char *proxy_function,

proxy_worker *worker,

server_rec *s);

PROXY_DECLARE(int) ap_proxy_acquire_connection(const char *proxy_function,

proxy_conn_rec **conn,

proxy_worker *worker,

server_rec *s);

PROXY_DECLARE(int) ap_proxy_release_connection(const char *proxy_function,

proxy_conn_rec *conn,

server_rec *s);

PROXY_DECLARE(int) ap_proxy_connect_backend(const char *proxy_function,

proxy_conn_rec *conn,

proxy_worker *worker,

server_rec *s);

PROXY_DECLARE(int) ap_proxy_connection_create(const char *proxy_function,

proxy_conn_rec *conn,

conn_rec *c, server_rec *s);

PROXY_DECLARE(void) ap_proxy_backend_broke(request_rec *r,

apr_bucket_brigade *brigade);

PROXY_DECLARE(apr_status_t) ap_proxy_buckets_lifetime_transform(request_rec *r,

apr_bucket_brigade *from,

apr_bucket_brigade *to);

typedef enum { PROXY_HASHFUNC_DEFAULT, PROXY_HASHFUNC_APR, PROXY_HASHFUNC_FNV } proxy_hash_t;

PROXY_DECLARE(unsigned int) ap_proxy_hashfunc(const char *str, proxy_hash_t method);

PROXY_DECLARE(apr_status_t) ap_proxy_set_wstatus(char c, int set, proxy_worker *w);

PROXY_DECLARE(char *) ap_proxy_parse_wstatus(apr_pool_t *p, proxy_worker *w);

PROXY_DECLARE(apr_status_t) ap_proxy_sync_balancer(proxy_balancer *b,

server_rec *s,

proxy_server_conf *conf);

PROXY_DECLARE(int) ap_proxy_trans_match(request_rec *r,

struct proxy_alias *ent,

proxy_dir_conf *dconf);

#define PROXY_LBMETHOD "proxylbmethod"

#define PROXY_DYNAMIC_BALANCER_LIMIT 16

int ap_proxy_lb_workers(void);

extern module PROXY_DECLARE_DATA proxy_module;

extern int PROXY_DECLARE_DATA proxy_lb_workers;

extern const apr_strmatch_pattern PROXY_DECLARE_DATA *ap_proxy_strmatch_path;

extern const apr_strmatch_pattern PROXY_DECLARE_DATA *ap_proxy_strmatch_domain;

#endif /*MOD_PROXY_H*/