Mercurial > hg > nginx
comparison src/os/win32/ngx_wsarecv.c @ 103:6dfda4cf5200
nginx-0.0.1-2003-06-11-19:28:34 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 11 Jun 2003 15:28:34 +0000 |
parents | |
children | ef8c87afcfc5 |
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102:7e86d028d8f0 | 103:6dfda4cf5200 |
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1 | |
2 #include <ngx_config.h> | |
3 #include <ngx_core.h> | |
4 #include <ngx_event.h> | |
5 | |
6 | |
7 ssize_t ngx_wsarecv(ngx_connection_t *c, char *buf, size_t size) | |
8 { | |
9 int rc; | |
10 u_int flags; | |
11 size_t bytes; | |
12 WSABUF wsabuf[1]; | |
13 ngx_err_t err; | |
14 ngx_event_t *rev; | |
15 LPWSAOVERLAPPED ovlp; | |
16 | |
17 rev = c->read; | |
18 bytes = 0; | |
19 | |
20 if ((ngx_event_flags & NGX_HAVE_AIO_EVENT) && rev->ready) { | |
21 rev->ready = 0; | |
22 | |
23 /* the overlapped WSARecv() completed */ | |
24 | |
25 if (ngx_event_flags & NGX_HAVE_IOCP_EVENT) { | |
26 if (rev->ovlp.error) { | |
27 ngx_log_error(NGX_LOG_ERR, c->log, rev->ovlp.error, | |
28 "WSARecv() failed"); | |
29 return NGX_ERROR; | |
30 } | |
31 | |
32 return rev->available; | |
33 } | |
34 | |
35 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &rev->ovlp, | |
36 &bytes, 0, NULL) == 0) { | |
37 err = ngx_socket_errno; | |
38 ngx_log_error(NGX_LOG_CRIT, c->log, err, | |
39 "WSARecv() or WSAGetOverlappedResult() failed"); | |
40 | |
41 return NGX_ERROR; | |
42 } | |
43 | |
44 return bytes; | |
45 } | |
46 | |
47 if (ngx_event_flags & NGX_HAVE_AIO_EVENT) { | |
48 ovlp = (LPWSAOVERLAPPED) &c->read->ovlp; | |
49 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); | |
50 | |
51 } else { | |
52 ovlp = NULL; | |
53 } | |
54 | |
55 wsabuf[0].buf = buf; | |
56 wsabuf[0].len = size; | |
57 flags = 0; | |
58 | |
59 rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, ovlp, NULL); | |
60 | |
61 ngx_log_debug(c->log, "WSARecv: %d:%d" _ rc _ bytes); | |
62 | |
63 if (rc == -1) { | |
64 err = ngx_socket_errno; | |
65 if (err == WSA_IO_PENDING) { | |
66 return NGX_AGAIN; | |
67 | |
68 } else if (err == WSAEWOULDBLOCK) { | |
69 ngx_log_error(NGX_LOG_INFO, c->log, err, "WSARecv() EAGAIN"); | |
70 return NGX_AGAIN; | |
71 | |
72 } else { | |
73 ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSARecv() failed"); | |
74 return NGX_ERROR; | |
75 } | |
76 } | |
77 | |
78 if (ngx_event_flags & NGX_HAVE_IOCP_EVENT) { | |
79 | |
80 /* | |
81 * If a socket was bound with I/O completion port | |
82 * then GetQueuedCompletionStatus() would anyway return its status | |
83 * despite that WSARecv() was already completed. | |
84 */ | |
85 | |
86 return NGX_AGAIN; | |
87 } | |
88 | |
89 return bytes; | |
90 } |