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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)
{
int n;
ngx_err_t err;
if (c->read->timedout) {
ngx_set_socket_errno(NGX_ETIMEDOUT);
ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT, "recv() failed");
return NGX_ERROR;
}
#if (HAVE_KQUEUE)
ngx_log_debug(c->log, "ngx_event_recv: eof:%d, avail:%d, err:%d" _
c->read->eof _ c->read->available _ c->read->error);
#endif
#if (USE_KQUEUE)
if (c->read->eof && c->read->available == 0) {
if (c->read->error) {
ngx_log_error(NGX_LOG_ERR, c->log, c->read->error,
"recv() failed");
return NGX_ERROR;
}
return 0;
}
#elif (HAVE_KQUEUE)
if (ngx_event_type == NGX_KQUEUE_EVENT) {
if (c->read->eof && c->read->available == 0) {
if (c->read->error) {
ngx_log_error(NGX_LOG_ERR, c->log, c->read->error,
"recv() failed");
return NGX_ERROR;
}
return 0;
}
}
#endif
n = ngx_recv(c->fd, buf, size, 0);
if (n == -1) {
err = ngx_socket_errno;
if (err == NGX_EAGAIN) {
ngx_log_error(NGX_LOG_INFO, c->log, err, "recv() returns EAGAIN");
return NGX_AGAIN;
}
ngx_log_error(NGX_LOG_ERR, c->log, err, "recv() failed");
return NGX_ERROR;
}
#if (USE_KQUEUE)
c->read->available -= n;
#elif (HAVE_KQUEUE)
if (ngx_event_type == NGX_KQUEUE_EVENT) {
c->read->available -= n;
}
#endif
return n;
}
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