Nginx学习——http配置项解析编程

http配置项解析编程配置configngx_addon_name=ngx_http_mytest_moduleHTTP_MODULES="$HTTP_MODULES ngx_http_mytest_module"NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_mytest_module.c"在nginx_http_mytest_module.c中定义mytest模块，使用预设方法解析test_flag，test_str,test_num配置项，使用自定义配置项处理方法解析mytest项。<pre class="cpp" name="code">#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>//create a structure
typedef struct{
ngx_str_t my_str;
ngx_int_t my_num;
ngx_flag_t my_flag;
ngx_str_t mytest_str;
ngx_int_t mytest_num;
} ngx_http_mytest_conf_t; static char* ngx_conf_set_mytest（ngx_conf_t* cf, ngx_command_t* cmd, void* conf）;
static ngx_int_t ngx_http_mytest_handler（ngx_http_request_t* r）;static void* ngx_http_mytest_create_loc_conf（ngx_conf_t* cf）;
static char* ngx_http_mytest_merge_loc_conf（ngx_conf_t* cf, void* parent, void* child）;//set the resolution of configuration items
static ngx_command_t ngx_http_mytest_commands[] = {
{
//test_flag configuration item
ngx_string（"test_flag"）,
NGX_HTTP_LOC_CONF | NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof（ngx_http_mytest_conf_t, my_flag）,
NULL
},
{
//test_str configuration item
ngx_string（"test_str"）,
NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof（ngx_http_mytest_conf_t, my_str）,
NULL
},
{
//test_num configuration item
ngx_string（"test_num"）,
NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof（ngx_http_mytest_conf_t, my_num）,
NULL
},
{
//mytest configuration item
ngx_string（"mytest"）,
NGX_HTTP_LOC_CONF | NGX_CONF_TAKE2,
ngx_conf_set_mytest,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL
}, ngx_null_command
};
static ngx_http_module_t ngx_http_mytest_module_ctx = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
ngx_http_mytest_create_loc_conf, //create location configuration
ngx_http_mytest_merge_loc_conf //merge the loc configurations
};ngx_module_t ngx_http_mytest_module = {
NGX_MODULE_V1,
&ngx_http_mytest_module_ctx,
ngx_http_mytest_commands,
NGX_HTTP_MODULE,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NGX_MODULE_V1_PADDING
};static char* ngx_conf_set_mytest（ngx_conf_t* cf, ngx_command_t* cmd, void* conf）
{
ngx_http_mytest_conf_t* mycf = conf; ngx_str_t* value = cf->args->elts; mycf->mytest_num = ngx_atoi（value[2].data, value[2].len）; mycf->mytest_str = value[1];
ngx_http_core_loc_conf_t* clcf;
clcf = ngx_http_conf_get_module_loc_conf（cf, ngx_http_core_module）;
clcf->handler = ngx_http_mytest_handler; return NGX_CONF_OK;
}static ngx_int_t ngx_http_mytest_handler（ngx_http_request_t* r）
{
//we response "GET" and "HEAD" requests only
if（！（r->method & （NGX_HTTP_GET | NGX_HTTP_HEAD | NGX_HTTP_POST）））
{
return NGX_HTTP_NOT_ALLOWED;
}
//discard request body, since we don"t need it here
ngx_int_t rc = ngx_http_discard_request_body（r）;
if（rc ！= NGX_OK）{
return rc;
} ngx_http_mytest_conf_t* my_conf;
my_conf = ngx_http_get_module_loc_conf（r, ngx_http_mytest_module）; ngx_str_t type = ngx_string（"text/plain"）; u_char nginx_str_mytest[1024] = {0};
ngx_sprintf（nginx_str_mytest,"test_str=%s,test_flag=%i,test_num=%i,mytest_str=%s,mytest_num=%i",my_conf->my_str.data,my_conf->my_flag,my_conf->my_num,my_conf->mytest_str.data,my_conf->mytest_num）; r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = ngx_strlen（nginx_str_mytest）;
r->headers_out.content_type = type; rc = ngx_http_send_header（r）;
if（rc == NGX_ERROR || rc>NGX_OK || r->header_only）
{
return rc;
} ngx_buf_t* b;
b = ngx_pcalloc（r->pool, sizeof（ngx_buf_t））;
if（b == NULL）
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->pos = nginx_str_mytest;
b->last = nginx_str_mytest + ngx_strlen（nginx_str_mytest）;
b->memory = 1;
b->last_buf = 1; ngx_chain_t out;
out.buf = b;
out.next = NULL; return ngx_http_output_filter（r, &out）;
}static void* ngx_http_mytest_create_loc_conf（ngx_conf_t* cf）
{
ngx_http_mytest_conf_t* conf;
conf = ngx_pcalloc（cf->pool, sizeof（ngx_http_mytest_conf_t））;
if（NULL == conf）{
return NGX_CONF_ERROR;
} conf->my_str.len = 0;
conf->my_str.data = NULL;
conf->my_num = NGX_CONF_UNSET;
conf->my_flag = NGX_CONF_UNSET;
return conf;
}static char* ngx_http_mytest_merge_loc_conf（ngx_conf_t* cf, void* parent, void* child）
{
ngx_http_mytest_conf_t* prev = parent;
ngx_http_mytest_conf_t* conf = child;
ngx_conf_merge_str_value（conf->my_str, prev->my_str,""）; return NGX_CONF_OK;
}在ngx.conf中http下面默认server中加入如下配置项location /test{test_flag on;test_str "helloworld";test_num 88;mytest"hello" 88;}启动nginx./configure --add-module=/home/chen123/nginx/exp3makemake installsudo /usr/local/nginx/sbin/nginx结果如下CentOS 6.2实战部署Nginx+MySQL+PHP http://www.linuxidc.com/Linux/2013-09/90020.htm使用Nginx搭建WEB服务器 http://www.linuxidc.com/Linux/2013-09/89768.htm搭建基于Linux6.3+Nginx1.2+PHP5+MySQL5.5的Web服务器全过程 http://www.linuxidc.com/Linux/2013-09/89692.htmCentOS 6.3下Nginx性能调优 http://www.linuxidc.com/Linux/2013-09/89656.htmCentOS 6.3下配置Nginx加载ngx_pagespeed模块 http://www.linuxidc.com/Linux/2013-09/89657.htmCentOS 6.4安装配置Nginx+Pcre+php-fpm http://www.linuxidc.com/Linux/2013-08/88984.htmNginx搭建视频点播服务器（仿真专业流媒体软件） http://www.linuxidc.com/Linux/2012-08/69151.htmNginx 的详细介绍：请点这里
Nginx 的下载地址：请点这里本文永久更新链接地址：http://www.linuxidc.com/Linux/2014-07/103983.htm