pdu_send_proxy
void (*pdu_send_proxy)(struct pdu *);
return (conn->conn_ops->pdu_send_proxy(pdu));
static void pdu_send_proxy(struct pdu *pdu);
.pdu_send_proxy = pdu_send_proxy,
.pdu_send_proxy = nullptr,
static void pdu_send_proxy(struct pdu *pdu);
.pdu_send_proxy = pdu_send_proxy,