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From Ian Holsman <I...@cnet.com>
Subject [PATCH] Reverse Proxy HTTP Hooks
Date Wed, 16 May 2001 15:28:01 GMT
hi.
I know you guys were working on a 'filter' method of doing this,
but I needed  a method quickly so I got this hook method working.

the main reason me doing this via a hook instead of a filter, is that
I couldn't see an 'easy' way to tell apache to set filters on a Reverse
Proxy call.


..Ian
Index: proxy_http.c
===================================================================
RCS file: /home/cvspublic/httpd-proxy/module-2.0/proxy_http.c,v
retrieving revision 1.70
diff -u -b -r1.70 proxy_http.c
--- proxy_http.c  2001/05/11 17:32:37 1.70
+++ proxy_http.c  2001/05/16 15:29:04
@@ -59,6 +59,7 @@
 /* HTTP routines for Apache proxy */

 #include "mod_proxy.h"
+#include "proxy_http.h"

 module AP_MODULE_DECLARE_DATA proxy_http_module;

@@ -483,7 +483,7 @@
         e = apr_bucket_pool_create(buf, strlen(buf), p);
         APR_BRIGADE_INSERT_TAIL(bb, e);
     }
-
+proxy_http_run_pre_request( r );
     /* handle Via */
     if (conf->viaopt == via_block) {
  /* Block all outgoing Via: headers */
@@ -613,7 +613,7 @@
      */

     rp = make_fake_req(origin, r);
-
+proxy_http_run_post_request( r );
     apr_brigade_cleanup(bb);

     if (APR_SUCCESS != (rv = ap_proxy_string_read(origin, bb, buffer, sizeof(buffer), &eos)))
{
@@ -833,3 +833,18 @@
     NULL,    /* command apr_table_t */
     ap_proxy_http_register_hook  /* register hooks */
 };
+
+
+APR_HOOK_STRUCT(
+ APR_HOOK_LINK(pre_request)
+ APR_HOOK_LINK(post_request)
+)
+
+APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy_http, PROXY_HTTP, int, pre_request,
+                                     (request_rec *r),(r),DECLINED)
+APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy_http, PROXY_HTTP, int, post_request,
+                  (request_rec *r),(r),DECLINED)
+


-- proxy_http.h
#ifndef _PROXY_HTTP_H
#define _PROXY_HTTP_H 1
#if !defined(WIN32)
#define PROXY_HTTP_DECLARE(type)            type
#define PROXY_HTTP_DECLARE_NONSTD(type)     type
#define PROXY_HTTP_DECLARE_DATA
#elif defined(PROXY__HTTP_DECLARE_STATIC)
#define PROXY_HTTP_DECLARE(type)            type __stdcall
#define PROXY_HTTP_DECLARE_NONSTD(type)     type
#define PROXY_HTTP_DECLARE_DATA
#elif defined(PROXY_HTTP_DECLARE_EXPORT)
#define PROXY_HTTP_DECLARE(type)            __declspec(dllexport) type __stdcall
#define PROXY_HTTP_DECLARE_NONSTD(type)     __declspec(dllexport) type
#define PROXY_HTTP_DECLARE_DATA             __declspec(dllexport)
#else
#define PROXY_HTTP_DECLARE(type)            __declspec(dllimport) type __stdcall
#define PROXY_HTTP_DECLARE_NONSTD(type)     __declspec(dllimport) type
#define PROXY_HTTP_DECLARE_DATA             __declspec(dllimport)
#endif
/*
typedef int proxy_http_HOOK_pre_request_t (request_rec *r);
PROXY_HTTP_DECLARE(void) proxy_http_hook_pre_request(proxy_http_HOOK_pre_request_t *pf, const
char * const *aszPre, const char * const *aszSucc, int nOrder); PROXY_HTTP_DECLARE(int) proxy_http_run_pre_request
(request_rec *r); PROXY_HTTP_DECLARE(apr_array_header_t *) proxy_http_hook_get_pre_request(void);
typedef struct proxy_http_LINK_pre_request_t { proxy_http_HOOK_pre_request_t *pFunc; const
char *szName; const char * const *aszPredecessors; const char * const *aszSuccessors; int
nOrder; } proxy_http_LINK_pre_request_t;


typedef int proxy_http_HOOK_post_request_t (request_rec *r); PROXY_HTTP_DECLARE(void) proxy_http_hook_post_request(proxy_http_HOOK_post_request_t
*pf, const char * const *aszPre, const char * const *aszSucc, int nOrder); PROXY_HTTP_DECLARE(int)
proxy_http_run_post_request (request_rec *r); PROXY_HTTP_DECLARE(apr_array_header_t *) proxy_http_hook_get_post_request(void);
typedef struct proxy_http_LINK_post_request_t { proxy_http_HOOK_post_request_t *pFunc; const
char *szName; const char * const *aszPredecessors; const char * const *aszSuccessors; int
nOrder; } proxy_http_LINK_post_request_t;
*/
APR_DECLARE_EXTERNAL_HOOK(proxy_http, PROXY_HTTP, int, pre_request,
                                     (request_rec *r))

APR_DECLARE_EXTERNAL_HOOK(proxy_http, PROXY_HTTP, int, post_request,
                   (request_rec *r))

#endif /* PROXY_HTTP */

--
Ian Holsman
Performance Measurement & Analysis
415-364-8608 

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