《深入理解Nginx》阅读与实践（一）：Nginx安装配置与HelloWorld

ngx_addon_name=ngx_http_mytest_module
HTTP_MODULES="$HTTP_MODULES ngx_http_mytest_module"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_mytest_module.c"

#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>static char* ngx_http_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 char* ngx_http_mytest(ngx_conf_t *cf,ngx_command_t *cmd, void *conf)
{
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_command_t ngx_http_mytest_commands[] = {
{
ngx_string("mytest"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_CONF_NOARGS,
ngx_http_mytest,
NGX_HTTP_LOC_CONF_OFFSET,
,
NULL },
ngx_null_command
};static ngx_http_module_t ngx_http_mytest_module_ctx = {
NULL,
NULL,
NULL,
NULL, NULL,
NULL,
NULL,
NULL
};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 ngx_int_t ngx_http_mytest_handler(ngx_http_request_t *r)
{
if(!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
return NGX_HTTP_NOT_ALLOWED;
} ngx_int_t rc = ngx_http_discard_request_body(r);
if(rc!=NGX_OK) {
return rc;
} ngx_str_t type = ngx_string("text/plain");
ngx_str_t response = ngx_string("Hello World!");
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = response.len;
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_create_temp_buf(r->pool,response.len);
if(b==NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_memcpy(b->pos,response.data,response.len);
b->last = b->pos + response.len;
b->last_buf = ; ngx_chain_t out;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r,&out);
}