struct queued_chunk *cq_peek(struct chunk_queue *cq);
void cq_dequeue(struct chunk_queue *cq);
void cq_update(struct chunk_queue *cq, size_t sent);
struct queued_chunk *cq_peek(struct chunk_queue *cq);
void cq_dequeue(struct chunk_queue *cq);
void cq_update(struct chunk_queue *cq, size_t sent);