+database_hosts_t database_hosts_create(void);
+void database_hosts_destroy(database_hosts_t *);
+
+struct host *find_host(database_hosts_t hosts, const char *hostport,
+ const char *proxy, int port, iochan_man_t iochan_man);
+
+int host_getaddrinfo(struct host *host, iochan_man_t iochan_man);