3 * Copyright (C) Igor Sysoev
7 #include <ngx_config.h>
15 ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
23 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
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);
28 if (rev->available == 0) {
29 if (rev->pending_eof) {
35 ngx_set_socket_errno(rev->kq_errno);
37 return ngx_connection_error(c, rev->kq_errno,
38 "kevent() reported about an closed connection");
51 n = recv(c->fd, buf, size, 0);
53 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
54 "recv: fd:%d %d of %d", c->fd, n, size);
57 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
61 * rev->available may be negative here because some additional
62 * bytes may be received between kevent() and recv()
65 if (rev->available <= 0) {
66 if (!rev->pending_eof) {
70 if (rev->available < 0) {
78 * on FreeBSD recv() may return 0 on closed socket
79 * even if kqueue reported about available data
89 if ((size_t) n < size) {
100 err = ngx_socket_errno;
102 if (err == NGX_EAGAIN || err == NGX_EINTR) {
103 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
108 n = ngx_connection_error(c, err, "recv() failed");
112 } while (err == NGX_EINTR);
123 #else /* ! NGX_HAVE_KQUEUE */
126 ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
135 n = recv(c->fd, buf, size, 0);
137 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
138 "recv: fd:%d %d of %d", c->fd, n, size);
147 if ((size_t) n < size
148 && !(ngx_event_flags & NGX_USE_GREEDY_EVENT))
156 err = ngx_socket_errno;
158 if (err == NGX_EAGAIN || err == NGX_EINTR) {
159 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
164 n = ngx_connection_error(c, err, "recv() failed");
168 } while (err == NGX_EINTR);
179 #endif /* NGX_HAVE_KQUEUE */