nginx 编写helloworld模块，报错，404 Not Found
配置文件：
location /test {
mytest;
}
config文件：
ngx_addon_name=ngx_http_mytest_module
HTTP_MODULES="$HTTP_MODULES ngx_http_mytest_module"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_mytest_module.c"
CORE_LIBS="$CORE_LIBS -lpcre"
c码如下：
1 #include
2 #include
3 #include
4
5 static ngx_int_t ngx_http_mytest_handler(ngx_http_request_t *r);
6 static char *
7 ngx_http_mytest(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
8 //处理配置项
9 static ngx_command_t ngx_http_mytest_commands[] = {
10 {
11 ngx_string("mytest"),
13 ngx_http_mytest,
14 NGX_HTTP_LOC_CONF_OFFSET,
15 0,
16 NULL
17 },
18 ngx_null_command
19 };
20 //模块上下文
21 static ngx_http_module_t ngx_http_mytest_module_ctx = {
22 NULL,
23 NULL,
24 NULL,
25 NULL,
26 NULL,
27 NULL,
28 NULL,
29 NULL
30 };
31 //新模块定义
32 ngx_module_t ngx_http_mytest_module = {
33 NGX_MODULE_V1,
34 &ngx_http_mytest_module_ctx,
35 ngx_http_mytest_commands,
36 NGX_HTTP_MODULE,
37 NULL,
38 NULL,
39 NULL,
40 NULL,
41 NULL,
42 NULL,
43 NULL,
44 NGX_MODULE_V1_PADDING
45 };
46
47 //配置项对应的回调函数
48 static char *
49 ngx_http_mytest(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
50 {
51 ngx_http_core_loc_conf_t *clcf;
52 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
53 clcf->handler = ngx_http_mytest_handler;
54 return NGX_CONF_OK;
55 }
56
57 //实际完成处理的回调函数
58 static ngx_int_t ngx_http_mytest_handler(ngx_http_request_t *r)
59 {
60 if (!(r->method & (NGX_HTTP_GET | NGX_HTTP_HEAD))) {
61 return NGX_HTTP_NOT_ALLOWED;
62 }
63
64 ngx_int_t rc = ngx_http_discard_request_body(r);
65 if (rc != NGX_OK) {
66 return rc;
67 }
68
69 ngx_str_t type = ngx_string("text/plain");
70 ngx_str_t response = ngx_string("Hello World");
71 r->headers_out.status = NGX_HTTP_OK;
72 r->headers_out.content_length_n = response.len;
73 r->headers_out.content_type = type;
74
75 rc = ngx_http_send_header(r);
76 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
77 return rc;
78 }
79
80 ngx_buf_t *b;
81 b = ngx_create_temp_buf(r->pool, response.len);
82 if (b == NULL) {
83 return NGX_HTTP_INTERNAL_SERVER_ERROR;
84 }
85
86 ngx_memcpy(b->pos, response.data, response.len);
87 b->last = b->pos + response.len;
88 b->last_buf = 1;
89
90 ngx_chain_t out;
91 out.buf = b;
92 out.next = NULL;
93
94 return ngx_http_output_filter(r, &out);
95 }
执行结果：
[root@localhost objs]# ps -ef | grep nginx
root 29043 1 0 19:50 ? 00:00:00 nginx: master process ./nginx
nobody 29044 29043 0 19:50 ? 00:00:00 nginx: worker process
root 29188 18558 0 19:58 pts/0 00:00:00 grep --color=auto nginx
[root@localhost objs]# curl http://localhost/test
404 Not Found
nginx/1.10.2
