err_t LibTCPGetPeerName(PTCP_PCB pcb, struct ip_addr *const ipaddr, u16_t *const port);
err_t LibTCPGetHostName(PTCP_PCB pcb, struct ip_addr *const ipaddr, u16_t *const port);
void LibTCPAccept(PTCP_PCB pcb, struct tcp_pcb *listen_pcb, void *arg);
err_t LibTCPGetPeerName(PTCP_PCB pcb, struct ip_addr *const ipaddr, u16_t *const port);
err_t LibTCPGetHostName(PTCP_PCB pcb, struct ip_addr *const ipaddr, u16_t *const port);
void LibTCPAccept(PTCP_PCB pcb, struct tcp_pcb *listen_pcb, void *arg);