0
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
|
4 */
|
|
5
|
|
6
|
|
7 #include <ngx_config.h>
|
|
8 #include <ngx_core.h>
|
|
9 #include <ngx_event.h>
|
|
10 #include <ngx_event_connect.h>
|
|
11
|
|
12
|
36
|
13 ngx_int_t
|
|
14 ngx_event_connect_peer(ngx_peer_connection_t *pc)
|
0
|
15 {
|
92
|
16 int rc;
|
336
|
17 ngx_int_t event;
|
92
|
18 ngx_err_t err;
|
260
|
19 ngx_uint_t level;
|
92
|
20 ngx_socket_t s;
|
|
21 ngx_event_t *rev, *wev;
|
|
22 ngx_connection_t *c;
|
0
|
23
|
260
|
24 rc = pc->get(pc, pc->data);
|
|
25 if (rc != NGX_OK) {
|
|
26 return rc;
|
0
|
27 }
|
|
28
|
260
|
29 s = ngx_socket(pc->sockaddr->sa_family, SOCK_STREAM, 0);
|
0
|
30
|
260
|
31 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, pc->log, 0, "socket %d", s);
|
58
|
32
|
0
|
33 if (s == -1) {
|
|
34 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
35 ngx_socket_n " failed");
|
|
36 return NGX_ERROR;
|
|
37 }
|
|
38
|
|
39
|
92
|
40 c = ngx_get_connection(s, pc->log);
|
0
|
41
|
92
|
42 if (c == NULL) {
|
0
|
43 if (ngx_close_socket(s) == -1) {
|
|
44 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
45 ngx_close_socket_n "failed");
|
|
46 }
|
|
47
|
|
48 return NGX_ERROR;
|
|
49 }
|
|
50
|
|
51 if (pc->rcvbuf) {
|
|
52 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF,
|
112
|
53 (const void *) &pc->rcvbuf, sizeof(int)) == -1)
|
|
54 {
|
0
|
55 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
56 "setsockopt(SO_RCVBUF) failed");
|
583
|
57 goto failed;
|
0
|
58 }
|
|
59 }
|
|
60
|
|
61 if (ngx_nonblocking(s) == -1) {
|
|
62 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
63 ngx_nonblocking_n " failed");
|
|
64
|
583
|
65 goto failed;
|
|
66 }
|
92
|
67
|
583
|
68 if (pc->local) {
|
|
69 if (bind(s, pc->local->sockaddr, pc->local->socklen) == -1) {
|
|
70 ngx_log_error(NGX_LOG_CRIT, pc->log, ngx_socket_errno,
|
|
71 "bind(%V) failed", &pc->local->name);
|
|
72
|
|
73 goto failed;
|
0
|
74 }
|
|
75 }
|
|
76
|
92
|
77 c->recv = ngx_recv;
|
|
78 c->send = ngx_send;
|
126
|
79 c->recv_chain = ngx_recv_chain;
|
92
|
80 c->send_chain = ngx_send_chain;
|
32
|
81
|
326
|
82 c->sendfile = 1;
|
|
83
|
92
|
84 c->log_error = pc->log_error;
|
0
|
85
|
260
|
86 if (pc->sockaddr->sa_family != AF_INET) {
|
92
|
87 c->tcp_nopush = NGX_TCP_NOPUSH_DISABLED;
|
|
88 c->tcp_nodelay = NGX_TCP_NODELAY_DISABLED;
|
132
|
89
|
|
90 #if (NGX_SOLARIS)
|
|
91 /* Solaris's sendfilev() supports AF_NCA, AF_INET, and AF_INET6 */
|
|
92 c->sendfile = 0;
|
|
93 #endif
|
0
|
94 }
|
|
95
|
110
|
96 rev = c->read;
|
|
97 wev = c->write;
|
0
|
98
|
|
99 rev->log = pc->log;
|
|
100 wev->log = pc->log;
|
|
101
|
|
102 pc->connection = c;
|
|
103
|
|
104 /*
|
110
|
105 * TODO: MT: - ngx_atomic_fetch_add()
|
0
|
106 * or protection by critical section or mutex
|
|
107 *
|
|
108 * TODO: MP: - allocated in a shared memory
|
110
|
109 * - ngx_atomic_fetch_add()
|
0
|
110 * or protection by critical section or mutex
|
|
111 */
|
|
112
|
110
|
113 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);
|
0
|
114
|
|
115 #if (NGX_THREADS)
|
|
116 rev->lock = pc->lock;
|
|
117 wev->lock = pc->lock;
|
|
118 rev->own_lock = &c->lock;
|
|
119 wev->own_lock = &c->lock;
|
|
120 #endif
|
|
121
|
|
122 if (ngx_add_conn) {
|
|
123 if (ngx_add_conn(c) == NGX_ERROR) {
|
583
|
124 goto failed;
|
0
|
125 }
|
126
|
126 }
|
0
|
127
|
92
|
128 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, pc->log, 0,
|
260
|
129 "connect to %V, fd:%d #%d", pc->name, s, c->number);
|
0
|
130
|
260
|
131 rc = connect(s, pc->sockaddr, pc->socklen);
|
0
|
132
|
|
133 if (rc == -1) {
|
|
134 err = ngx_socket_errno;
|
|
135
|
|
136
|
390
|
137 if (err != NGX_EINPROGRESS
|
|
138 #if (NGX_WIN32)
|
|
139 /* Winsock returns WSAEWOULDBLOCK (NGX_EAGAIN) */
|
|
140 && err != NGX_EAGAIN
|
|
141 #endif
|
|
142 )
|
|
143 {
|
364
|
144 if (err == NGX_ECONNREFUSED
|
390
|
145 #if (NGX_LINUX)
|
|
146 /*
|
|
147 * Linux returns EAGAIN instead of ECONNREFUSED
|
|
148 * for unix sockets if listen queue is full
|
|
149 */
|
|
150 || err == NGX_EAGAIN
|
|
151 #endif
|
493
|
152 || err == NGX_ECONNRESET
|
364
|
153 || err == NGX_ENETDOWN
|
|
154 || err == NGX_ENETUNREACH
|
|
155 || err == NGX_EHOSTDOWN
|
|
156 || err == NGX_EHOSTUNREACH)
|
|
157 {
|
90
|
158 level = NGX_LOG_ERR;
|
364
|
159
|
90
|
160 } else {
|
|
161 level = NGX_LOG_CRIT;
|
|
162 }
|
36
|
163
|
90
|
164 ngx_log_error(level, c->log, err, "connect() to %V failed",
|
260
|
165 pc->name);
|
0
|
166
|
92
|
167 return NGX_DECLINED;
|
0
|
168 }
|
|
169 }
|
|
170
|
|
171 if (ngx_add_conn) {
|
|
172 if (rc == -1) {
|
36
|
173
|
0
|
174 /* NGX_EINPROGRESS */
|
36
|
175
|
0
|
176 return NGX_AGAIN;
|
|
177 }
|
126
|
178
|
0
|
179 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, pc->log, 0, "connected");
|
32
|
180
|
|
181 wev->ready = 1;
|
|
182
|
0
|
183 return NGX_OK;
|
|
184 }
|
|
185
|
|
186 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
187
|
4
|
188 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, pc->log, ngx_socket_errno,
|
|
189 "connect(): %d", rc);
|
|
190
|
0
|
191 /* aio, iocp */
|
|
192
|
|
193 if (ngx_blocking(s) == -1) {
|
|
194 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
195 ngx_blocking_n " failed");
|
583
|
196 goto failed;
|
0
|
197 }
|
|
198
|
|
199 /*
|
36
|
200 * FreeBSD's aio allows to post an operation on non-connected socket.
|
0
|
201 * NT does not support it.
|
126
|
202 *
|
0
|
203 * TODO: check in Win32, etc. As workaround we can use NGX_ONESHOT_EVENT
|
|
204 */
|
126
|
205
|
0
|
206 rev->ready = 1;
|
|
207 wev->ready = 1;
|
|
208
|
|
209 return NGX_OK;
|
|
210 }
|
|
211
|
36
|
212 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
213
|
|
214 /* kqueue */
|
|
215
|
0
|
216 event = NGX_CLEAR_EVENT;
|
|
217
|
36
|
218 } else {
|
|
219
|
|
220 /* select, poll, /dev/poll */
|
|
221
|
0
|
222 event = NGX_LEVEL_EVENT;
|
|
223 }
|
|
224
|
|
225 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) {
|
583
|
226 goto failed;
|
0
|
227 }
|
|
228
|
|
229 if (rc == -1) {
|
|
230
|
|
231 /* NGX_EINPROGRESS */
|
|
232
|
|
233 if (ngx_add_event(wev, NGX_WRITE_EVENT, event) != NGX_OK) {
|
583
|
234 goto failed;
|
0
|
235 }
|
|
236
|
|
237 return NGX_AGAIN;
|
|
238 }
|
|
239
|
|
240 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, pc->log, 0, "connected");
|
|
241
|
|
242 wev->ready = 1;
|
|
243
|
|
244 return NGX_OK;
|
583
|
245
|
|
246 failed:
|
|
247
|
|
248 ngx_free_connection(c);
|
|
249
|
|
250 if (ngx_close_socket(s) == -1) {
|
|
251 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
252 ngx_close_socket_n " failed");
|
|
253 }
|
|
254
|
|
255 return NGX_ERROR;
|
0
|
256 }
|
|
257
|
|
258
|
260
|
259 ngx_int_t
|
|
260 ngx_event_get_peer(ngx_peer_connection_t *pc, void *data)
|
0
|
261 {
|
260
|
262 return NGX_OK;
|
0
|
263 }
|