+bool init_control(void) {
+ randomize(controlcookie, sizeof(controlcookie) / 2);
+ bin2hex(controlcookie, controlcookie, sizeof(controlcookie) / 2);
+
+ // Get the address and port of the first listening socket
+
+ char *localhost = NULL;
+ sockaddr_t sa = {0};
+ socklen_t len = sizeof(sa);
+
+ // Make sure we have a valid address, and map 0.0.0.0 and :: to 127.0.0.1 and ::1.
+
+ if(getsockname(listen_socket[0].tcp.fd, &sa.sa, &len)) {
+ xasprintf(&localhost, "127.0.0.1 port %s", myport.tcp);
+ } else {
+ if(sa.sa.sa_family == AF_INET) {
+ if(sa.in.sin_addr.s_addr == 0) {
+ sa.in.sin_addr.s_addr = htonl(0x7f000001);
+ }
+ } else if(sa.sa.sa_family == AF_INET6) {
+ static const uint8_t zero[16] = {0};
+
+ if(!memcmp(sa.in6.sin6_addr.s6_addr, zero, sizeof(zero))) {
+ sa.in6.sin6_addr.s6_addr[15] = 1;
+ }
+ }
+
+ localhost = sockaddr2hostname(&sa);
+ }
+
+ bool wrote = write_pidfile(controlcookie, localhost);
+ free(localhost);