1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
#include <nginx.h>
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_string.h>
#include <ngx_errno.h>
#include <ngx_time.h>
#include <ngx_log.h>
#include <ngx_alloc.h>
#include <ngx_array.h>
#include <ngx_socket.h>
#include <ngx_server.h>
#include <ngx_connection.h>
#include <ngx_listen.h>
#include <ngx_conf_file.h>
/* STUB */
#include <ngx_http.h>
/* */
static void ngx_set_signals(ngx_log_t *log);
static void ngx_open_listening_sockets(ngx_log_t *log);
/* STUB */
int ngx_max_conn = 512;
u_int ngx_sendfile_flags;
ngx_server_t ngx_server;
/* */
ngx_log_t ngx_log;
ngx_pool_t *ngx_pool;
int ngx_max_module;
int ngx_connection_counter;
ngx_array_t ngx_listening_sockets;
int main(int argc, char *const *argv)
{
int i;
ngx_str_t conf_file;
ngx_conf_t conf;
/* STUB */
ngx_log.log_level = NGX_LOG_DEBUG;
ngx_pool = ngx_create_pool(16 * 1024, &ngx_log);
/* */
#if (WIN32)
if (ngx_init_sockets(&ngx_log) == NGX_ERROR) {
exit(1);
}
#else
ngx_set_signals(&ngx_log);
#endif
if (ngx_os_init(&ngx_log) == NGX_ERROR) {
exit(1);
}
ngx_init_array(ngx_listening_sockets, ngx_pool, 10, sizeof(ngx_listen_t),
1);
ngx_max_module = 0;
for (i = 0; ngx_modules[i]; i++) {
ngx_modules[i]->index = ngx_max_module++;
}
ngx_memzero(&conf, sizeof(ngx_conf_t));
ngx_test_null(conf.args,
ngx_create_array(ngx_pool, 10, sizeof(ngx_str_t)), 1);
conf.pool = ngx_pool;
conf.log = &ngx_log;
conf.type = NGX_CORE_MODULE_TYPE;
conf_file.len = sizeof("nginx.conf") - 1;
conf_file.data = "nginx.conf";
if (ngx_conf_parse(&conf, &conf_file) != NGX_CONF_OK) {
return 1;
}
ngx_init_temp_number();
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(ngx_pool) == NGX_ERROR) {
return 1;
}
}
}
ngx_open_listening_sockets(&ngx_log);
/* TODO: daemon */
/* TODO: fork */
ngx_pre_thread(&ngx_listening_sockets, ngx_pool, &ngx_log);
/* TODO: threads */
/* STUB */
ngx_worker(&ngx_log);
return 0;
}
#if !(WIN32)
static void ngx_set_signals(ngx_log_t *log)
{
struct sigaction sa;
ngx_memzero(&sa, sizeof(struct sigaction));
sa.sa_handler = SIG_IGN;
sigemptyset(&sa.sa_mask);
if (sigaction(SIGPIPE, &sa, NULL) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"sigaction(SIGPIPE, SIG_IGN) failed");
exit(1);
}
}
#endif
static void ngx_open_listening_sockets(ngx_log_t *log)
{
int times, failed, reuseaddr, i;
ngx_err_t err;
ngx_socket_t s;
ngx_listen_t *ls;
reuseaddr = 1;
for (times = 10; times; times--) {
failed = 0;
/* for each listening socket */
ls = (ngx_listen_t *) ngx_listening_sockets.elts;
for (i = 0; i < ngx_listening_sockets.nelts; i++) {
if (ls[i].bound)
continue;
if (ls[i].inherited) {
/* TODO: close on exit */
/* TODO: nonblocking */
/* TODO: deferred accept */
ls[i].bound = 1;
continue;
}
s = ngx_socket(ls[i].family, ls[i].type, ls[i].protocol,
ls[i].flags);
if (s == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_socket_n " %s falied", ls[i].addr_text.data);
exit(1);
}
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
(const void *) &reuseaddr, sizeof(int)) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
"setsockopt(SO_REUSEADDR) %s failed",
ls[i].addr_text.data);
exit(1);
}
/* TODO: close on exit */
if (ls[i].nonblocking) {
if (ngx_nonblocking(s) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_nonblocking_n " %s failed",
ls[i].addr_text.data);
exit(1);
}
}
if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
err = ngx_socket_errno;
ngx_log_error(NGX_LOG_EMERG, log, err,
"bind() to %s failed", ls[i].addr_text.data);
if (err != NGX_EADDRINUSE)
exit(1);
if (ngx_close_socket(s) == -1)
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %s failed",
ls[i].addr_text.data);
failed = 1;
continue;
}
if (listen(s, ls[i].backlog) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
"listen() to %s failed", ls[i].addr_text.data);
exit(1);
}
/* TODO: deferred accept */
ls[i].fd = s;
ls[i].bound = 1;
}
if (!failed)
break;
ngx_log_error(NGX_LOG_NOTICE, log, 0,
"try again to bind() after 500ms");
ngx_msleep(500);
}
if (failed) {
ngx_log_error(NGX_LOG_EMERG, log, 0, "can not bind(), exiting");
exit(1);
}
}
|
