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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_errno.h>
#include <ngx_log.h>
#include <ngx_recv.h>
#include <ngx_connection.h>
ssize_t ngx_event_recv_core(ngx_connection_t *c, char *buf, size_t size)
{
ssize_t n;
ngx_err_t err;
ngx_event_t *ev;
ev = c->read;
/* DEBUG */
#if (HAVE_KQUEUE)
if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
ngx_log_debug(c->log, "ngx_event_recv: eof:%d, avail:%d, err:%d" _
ev->eof _ ev->available _ ev->error);
}
#endif
#if (USE_KQUEUE)
if (ev->eof && ev->available == 0) {
if (ev->error == 0) {
return 0;
}
ngx_set_socket_errno(ev->error);
err = ev->error;
n = -1;
} else {
n = ngx_recv(c->fd, buf, size, 0);
if (n == -1) {
err = ngx_socket_errno;
}
}
if (n == -1) {
ev->ready = 0;
if (err == NGX_ECONNRESET && ev->ignore_econnreset) {
return 0;
}
if (err == NGX_EAGAIN) {
ngx_log_error(NGX_LOG_INFO, c->log, err, "recv() returned EAGAIN");
return NGX_AGAIN;
}
ngx_log_error(NGX_LOG_ERR, c->log, err, "recv() failed");
return NGX_ERROR;
}
ev->available -= n;
if (ev->available == 0) {
ev->ready = 0;
}
return n;
#elif (HAVE_KQUEUE)
if ((ngx_event_flags & NGX_HAVE_KQUEUE_EVENT)
&& ev->eof && ev->available == 0) {
if (ev->error == 0) {
return 0;
}
ngx_set_socket_errno(ev->error);
err = ev->error;
n = -1;
} else {
n = ngx_recv(c->fd, buf, size, 0);
ngx_log_debug(c->log, "ngx_event_recv: read:%d:%d" _ n _ size);
if (n == -1) {
err = ngx_socket_errno;
}
}
if (n == -1) {
ev->ready = 0;
if (err == NGX_ECONNRESET && ev->ignore_econnreset) {
return 0;
}
if (err == NGX_EAGAIN) {
ngx_log_error(NGX_LOG_INFO, c->log, err, "recv() returned EAGAIN");
return NGX_AGAIN;
}
ngx_log_error(NGX_LOG_ERR, c->log, err, "recv() failed");
return NGX_ERROR;
}
if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
ev->available -= n;
if (ev->available == 0) {
ev->ready = 0;
}
} else if ((size_t) n < size) {
ev->ready = 0;
}
return n;
#else /* not kqueue */
n = ngx_recv(c->fd, buf, size, 0);
if (n == -1) {
err = ngx_socket_errno;
ev->ready = 0;
if (err == NGX_ECONNRESET && ev->ignore_econnreset) {
return 0;
}
if (err == NGX_EAGAIN) {
ngx_log_error(NGX_LOG_INFO, c->log, err, "recv() returned EAGAIN");
return NGX_AGAIN;
}
ngx_log_error(NGX_LOG_ERR, c->log, err, "recv() failed");
return NGX_ERROR;
}
if ((size_t) n < size) {
ev->ready = 0;
}
return n;
#endif
}
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