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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
static int ngx_unix_recv_error(ngx_event_t *rev, ngx_err_t err);
#if (HAVE_KQUEUE)
ssize_t ngx_unix_recv(ngx_connection_t *c, char *buf, size_t size)
{
ssize_t n;
ngx_event_t *rev;
rev = c->read;
if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
ngx_log_debug(c->log, "recv: eof:%d, avail:%d, err:%d" _
rev->eof _ rev->available _ rev->error);
if (rev->available == 0) {
if (rev->eof) {
rev->ready = 0;
if (rev->error) {
ngx_set_socket_errno(rev->error);
return ngx_unix_recv_error(rev, rev->error);
}
return 0;
} else {
return NGX_AGAIN;
}
}
}
do {
n = recv(c->fd, buf, size, 0);
ngx_log_debug(c->log, "recv: %d:%d" _ n _ size);
if (n >= 0) {
if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
rev->available -= n;
if (rev->available <= 0) {
if (!rev->eof) {
rev->ready = 0;
}
if (rev->available < 0) {
rev->available = 0;
}
}
return n;
}
if ((size_t) n < size) {
rev->ready = 0;
}
return n;
}
rev->ready = 0;
n = ngx_unix_recv_error(rev, ngx_socket_errno);
} while (n == NGX_EINTR);
return n;
}
#else /* ! NAVE_KQUEUE */
ssize_t ngx_unix_recv(ngx_connection_t *c, char *buf, size_t size)
{
ssize_t n;
ngx_event_t *rev;
rev = c->read;
do {
n = recv(c->fd, buf, size, 0);
ngx_log_debug(c->log, "recv: %d:%d" _ n _ size);
if (n >= 0) {
if ((size_t) n < size) {
rev->ready = 0;
}
return n;
}
rev->ready = 0;
n = ngx_unix_recv_error(rev, ngx_socket_errno);
} while (n == NGX_EINTR);
return n;
}
#endif /* NAVE_KQUEUE */
static int ngx_unix_recv_error(ngx_event_t *rev, ngx_err_t err)
{
if (err == NGX_ECONNRESET && rev->ignore_econnreset) {
return 0;
}
if (err == NGX_EAGAIN) {
ngx_log_error(NGX_LOG_INFO, rev->log, err, "recv() returned EAGAIN");
return NGX_AGAIN;
}
if (err == NGX_EINTR) {
ngx_log_error(NGX_LOG_INFO, rev->log, err, "recv() returned EINTR");
return NGX_EINTR;
}
ngx_log_error(NGX_LOG_ERR, rev->log, err, "recv() failed");
return NGX_ERROR;
}
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