77 static __maybe_unused void pair_udp_open(int fds[], uint16_t port)  in pair_udp_open()  argument
81 	fds[0] = socket(PF_INET, SOCK_DGRAM, 0);  in pair_udp_open()
82 	fds[1] = socket(PF_INET, SOCK_DGRAM, 0);  in pair_udp_open()
83 	if (fds[0] == -1 || fds[1] == -1) {  in pair_udp_open()
99 	if (bind(fds[1], (void *) &daddr, sizeof(daddr))) {  in pair_udp_open()
103 	if (bind(fds[0], (void *) &saddr, sizeof(saddr))) {  in pair_udp_open()
107 	if (connect(fds[0], (void *) &daddr, sizeof(daddr))) {  in pair_udp_open()
113 static __maybe_unused void pair_udp_send_char(int fds[], int num, char payload)  in pair_udp_send_char()  argument
120 		if (write(fds[0], buf, sizeof(buf)) != sizeof(buf)) {  in pair_udp_send_char()
124 		if (read(fds[1], rbuf, sizeof(rbuf)) != sizeof(rbuf)) {  in pair_udp_send_char()
135 static __maybe_unused void pair_udp_send(int fds[], int num)  in pair_udp_send()  argument
137 	return pair_udp_send_char(fds, num, DATA_CHAR);  in pair_udp_send()
140 static __maybe_unused void pair_udp_close(int fds[])  in pair_udp_close()  argument
142 	close(fds[0]);  in pair_udp_close()
143 	close(fds[1]);  in pair_udp_close()