本例子实现了回显 post 请求的请求体的功能。
Syntax: my_post;
Default: ;
Context: location
文件名 ngx_http_mypost_module.c
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
static char *ngx_http_mypost(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_int_t ngx_http_mypost_handler(ngx_http_request_t *r);
void
ngx_http_mypost_init(ngx_http_request_t *r);
typedef struct {
ngx_uint_t on;
ngx_str_t content;
ngx_uint_t sendf;
ngx_str_t fname;
} ngx_http_mypost_conf_t;
static ngx_command_t ngx_http_mypost_commands[] = {
{ ngx_string("my_post"),
NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
ngx_http_mypost,
0,
0,
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_mypost_module_ctx = {
NULL, /* preconfiguration */
NULL, /* 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_mypost_module = {
NGX_MODULE_V1,
&ngx_http_mypost_module_ctx, /* module context */
ngx_http_mypost_commands, /* 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 char *
ngx_http_mypost(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
//设置回调函数
ngx_http_core_loc_conf_t *clcf;
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
clcf->handler = ngx_http_mypost_handler;
return NGX_CONF_OK;
}
static ngx_int_t
ngx_http_mypost_handler(ngx_http_request_t *r)
{
//ngx_buf_t *b;
//ngx_chain_t out;
if(!(r->method & NGX_HTTP_POST)){
return NGX_DECLINED;
}
// 不处理chunked或请求体长度超过10000个字节
if (r->headers_in.content_length_n > 10000 || r->headers_in.chunked) {
r->request_body_no_buffering = 0;
return NGX_DECLINED;
}
ngx_int_t rc = ngx_http_read_client_request_body(r, ngx_http_mypost_init);
if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
return NGX_DONE;
}
void
ngx_http_mypost_init(ngx_http_request_t *r){
//ngx_buf_t *b;
//ngx_chain_t out;
ngx_int_t rc;
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = r->headers_in.content_length_n;
r->headers_out.content_type.data = (u_char *)"text/html";
r->headers_out.content_type.len = strlen("text/html");
//发送响应头
ngx_http_send_header(r);
rc = ngx_http_output_filter(r, r->request_body->bufs);
ngx_http_finalize_request(r, rc);
}
[root@192 ~]# ll /tmp/nginx_m/post/
total 8
-rw-r--r--. 1 root root 163 Jul 26 10:56 config
-rw-r--r--. 1 root root 3167 Jul 30 17:03 ngx_http_mypost_module.c
[root@192 ~]# cat /tmp/nginx_m/post/config
ngx_addon_name=ngx_http_mypost_module
HTTP_MODULES="$HTTP_MODULES ngx_http_mypost_module"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_mypost_module.c"
上面的目录和文件自己新建,然后进入 nginx 源码目录进行编译
./configure --prefix=/usr/local/nginx --add-module=/tmp/nginx_m/post/
make
make install
配置
location /post {
my_post;
}
[root@192 ~]# curl -F "name=dailei" -F "age=22" -F "f=@time.txt" localhost/post
------------------------------24c30356c721
Content-Disposition: form-data; name="name"
dailei
------------------------------24c30356c721
Content-Disposition: form-data; name="age"
22
------------------------------24c30356c721
Content-Disposition: form-data; name="f"; filename="time.txt"
Content-Type: text/plain
i am time.txt
------------------------------24c30356c721--