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     АРХИВ :: nginx-ru
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не работает фильтр


  • To: nginx-ru@xxxxxxxxx
  • Subject: не работает фильтр
  • From: "o1egus" <nginx-forum@xxxxxxxx>
  • Date: Mon, 31 May 2010 06:40:23 -0400
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Привет.
Хочу написать простейший фильтр, который как то меняет тело ответа. Но почему 
то моя callback функция ngx_http_pg_body_filter даже не вызывается. Подскажите 
что не так делаю.

В качестве источников пользовался 
http://www.evanmiller.org/nginx-modules-guide.html и модулем nginx под 
названием ngx_http_chunked_filter_module.c

Вот мой модуль.

[code]
#include "pg.h"

#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>

static ngx_int_t ngx_http_pg_filter_init(ngx_conf_t *cf);
static ngx_int_t ngx_http_pg_header_filter(ngx_http_request_t *r);
static ngx_int_t ngx_http_pg_body_filter(ngx_http_request_t *r, ngx_chain_t 
*in);

static ngx_http_module_t  ngx_http_pg_module_ctx = {
    NULL,                          /* preconfiguration */
    ngx_http_pg_filter_init,       /* postconfiguration */

    NULL,                          /* create main configuration */
    NULL,                          /* init main configuration */

    NULL,                          /* create server configuration */
    NULL,                          /* merge server configuration */

    NULL,                                                  /* create location 
configuration */
    NULL                                                   /* merge location 
configuration */
};

ngx_module_t  ngx_http_pg_module = {
    NGX_MODULE_V1,
    &ngx_http_pg_module_ctx,       /* module context */
    NULL,                  /* module directives */
    NGX_HTTP_MODULE,               /* module type */
    NULL,                          /* init master */
    NULL,                          /* init module */
    NULL,                          /* init process */
    NULL,                          /* init thread */
    NULL,                          /* exit thread */
    NULL,                          /* exit process */
    NULL,                          /* exit master */
    NGX_MODULE_V1_PADDING
};

static ngx_http_output_header_filter_pt  ngx_http_next_header_filter;
static ngx_http_output_body_filter_pt    ngx_http_next_body_filter;

static ngx_int_t ngx_http_pg_header_filter(ngx_http_request_t *r)
{
    ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,"HELLO HEADER FILTER");
    return ngx_http_next_header_filter(r);
}


static ngx_int_t ngx_http_pg_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
{
    ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,"HELLO BODY FILTER");
    return ngx_http_next_body_filter(r, in);
}

static ngx_int_t ngx_http_pg_filter_init(ngx_conf_t *cf)
{
    ngx_http_next_header_filter = ngx_http_top_header_filter;
    ngx_http_top_header_filter = ngx_http_pg_header_filter;

    ngx_http_next_body_filter = ngx_http_top_body_filter;
    ngx_http_top_body_filter = ngx_http_pg_body_filter;

    return NGX_OK;
}
[/code]

Конфиг.
[code]
daemon off;

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    keepalive_timeout  65;
    keepalive_requests 100;

server {

        listen       8000;
        server_name  localhost;
        
        location / {
        proxy_pass http://localhost:80;
        }
    }
}

[/code]

Posted at Nginx Forum: http://forum.nginx.org/read.php?21,92624,92624#msg-92624


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