ngx_tcp_push     2552 http/ngx_http_request.c         if (ngx_tcp_push(c->fd) == -1) {
ngx_tcp_push     1375 http/ngx_http_upstream.c         if (ngx_tcp_push(c->fd) == NGX_ERROR) {
ngx_tcp_push       41 os/unix/ngx_socket.h int ngx_tcp_push(ngx_socket_t s);