NGX_HTTP_CONNECTION_KEEP_ALIVE  799 http/ngx_http_core_module.c         case NGX_HTTP_CONNECTION_KEEP_ALIVE:
NGX_HTTP_CONNECTION_KEEP_ALIVE 1409 http/ngx_http_request.c         r->headers_in.connection_type = NGX_HTTP_CONNECTION_KEEP_ALIVE;
NGX_HTTP_CONNECTION_KEEP_ALIVE 1564 http/ngx_http_request.c     if (r->headers_in.connection_type == NGX_HTTP_CONNECTION_KEEP_ALIVE) {