89a90
> uint32_t max_pending_responses;
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>
> nxt_atomic_t use_count;
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< nxt_bool_t nxt_router_app_remove_port(nxt_port_t *port);
---
> void nxt_router_app_port_close(nxt_task_t *task, nxt_port_t *port);
> void nxt_router_app_use(nxt_task_t *task, nxt_app_t *app, int i);