|
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
|
|
|
11
|
|
18
|
12 #if (NGX_HAVE_KQUEUE)
|
|
0
|
13
|
|
354
|
14 ssize_t
|
|
|
15 ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
|
|
0
|
16 {
|
|
|
17 ssize_t n;
|
|
|
18 ngx_err_t err;
|
|
|
19 ngx_event_t *rev;
|
|
|
20
|
|
|
21 rev = c->read;
|
|
|
22
|
|
4
|
23 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
24 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
25 "recv: eof:%d, avail:%d, err:%d",
|
|
|
26 rev->pending_eof, rev->available, rev->kq_errno);
|
|
|
27
|
|
|
28 if (rev->available == 0) {
|
|
136
|
29 if (rev->pending_eof) {
|
|
0
|
30 rev->ready = 0;
|
|
|
31 rev->eof = 1;
|
|
|
32
|
|
|
33 if (rev->kq_errno) {
|
|
|
34 rev->error = 1;
|
|
|
35 ngx_set_socket_errno(rev->kq_errno);
|
|
|
36
|
|
86
|
37 return ngx_connection_error(c, rev->kq_errno,
|
|
|
38 "kevent() reported about an closed connection");
|
|
0
|
39 }
|
|
|
40
|
|
|
41 return 0;
|
|
136
|
42
|
|
|
43 } else {
|
|
364
|
44 rev->ready = 0;
|
|
136
|
45 return NGX_AGAIN;
|
|
0
|
46 }
|
|
|
47 }
|
|
|
48 }
|
|
|
49
|
|
|
50 do {
|
|
|
51 n = recv(c->fd, buf, size, 0);
|
|
|
52
|
|
|
53 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
54 "recv: fd:%d %d of %d", c->fd, n, size);
|
|
|
55
|
|
|
56 if (n >= 0) {
|
|
4
|
57 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
58 rev->available -= n;
|
|
|
59
|
|
|
60 /*
|
|
132
|
61 * rev->available may be negative here because some additional
|
|
136
|
62 * bytes may be received between kevent() and recv()
|
|
0
|
63 */
|
|
|
64
|
|
|
65 if (rev->available <= 0) {
|
|
|
66 if (!rev->pending_eof) {
|
|
|
67 rev->ready = 0;
|
|
|
68 }
|
|
|
69
|
|
|
70 if (rev->available < 0) {
|
|
|
71 rev->available = 0;
|
|
|
72 }
|
|
|
73 }
|
|
|
74
|
|
154
|
75 if (n == 0) {
|
|
|
76
|
|
|
77 /*
|
|
|
78 * on FreeBSD recv() may return 0 on closed socket
|
|
|
79 * even if kqueue reported about available data
|
|
|
80 */
|
|
|
81
|
|
|
82 rev->eof = 1;
|
|
|
83 rev->available = 0;
|
|
|
84 }
|
|
|
85
|
|
0
|
86 return n;
|
|
|
87 }
|
|
|
88
|
|
|
89 if ((size_t) n < size) {
|
|
|
90 rev->ready = 0;
|
|
|
91 }
|
|
|
92
|
|
|
93 if (n == 0) {
|
|
|
94 rev->eof = 1;
|
|
|
95 }
|
|
|
96
|
|
|
97 return n;
|
|
|
98 }
|
|
|
99
|
|
|
100 err = ngx_socket_errno;
|
|
|
101
|
|
|
102 if (err == NGX_EAGAIN || err == NGX_EINTR) {
|
|
|
103 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
|
|
|
104 "recv() not ready");
|
|
|
105 n = NGX_AGAIN;
|
|
|
106
|
|
|
107 } else {
|
|
|
108 n = ngx_connection_error(c, err, "recv() failed");
|
|
|
109 break;
|
|
|
110 }
|
|
|
111
|
|
|
112 } while (err == NGX_EINTR);
|
|
|
113
|
|
|
114 rev->ready = 0;
|
|
|
115
|
|
|
116 if (n == NGX_ERROR){
|
|
|
117 rev->error = 1;
|
|
|
118 }
|
|
|
119
|
|
|
120 return n;
|
|
|
121 }
|
|
|
122
|
|
18
|
123 #else /* ! NGX_HAVE_KQUEUE */
|
|
0
|
124
|
|
354
|
125 ssize_t
|
|
|
126 ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
|
|
0
|
127 {
|
|
|
128 ssize_t n;
|
|
|
129 ngx_err_t err;
|
|
|
130 ngx_event_t *rev;
|
|
|
131
|
|
|
132 rev = c->read;
|
|
|
133
|
|
|
134 do {
|
|
|
135 n = recv(c->fd, buf, size, 0);
|
|
|
136
|
|
|
137 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
138 "recv: fd:%d %d of %d", c->fd, n, size);
|
|
|
139
|
|
|
140 if (n == 0) {
|
|
|
141 rev->ready = 0;
|
|
|
142 rev->eof = 1;
|
|
|
143 return n;
|
|
|
144
|
|
|
145 } else if (n > 0) {
|
|
|
146
|
|
|
147 if ((size_t) n < size
|
|
4
|
148 && !(ngx_event_flags & NGX_USE_GREEDY_EVENT))
|
|
0
|
149 {
|
|
|
150 rev->ready = 0;
|
|
|
151 }
|
|
|
152
|
|
|
153 return n;
|
|
|
154 }
|
|
|
155
|
|
|
156 err = ngx_socket_errno;
|
|
|
157
|
|
|
158 if (err == NGX_EAGAIN || err == NGX_EINTR) {
|
|
|
159 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
|
|
|
160 "recv() not ready");
|
|
|
161 n = NGX_AGAIN;
|
|
|
162
|
|
|
163 } else {
|
|
|
164 n = ngx_connection_error(c, err, "recv() failed");
|
|
|
165 break;
|
|
|
166 }
|
|
|
167
|
|
|
168 } while (err == NGX_EINTR);
|
|
|
169
|
|
|
170 rev->ready = 0;
|
|
|
171
|
|
|
172 if (n == NGX_ERROR){
|
|
|
173 rev->error = 1;
|
|
|
174 }
|
|
|
175
|
|
|
176 return n;
|
|
|
177 }
|
|
|
178
|
|
18
|
179 #endif /* NGX_HAVE_KQUEUE */
|
