1ub_ctx_create 2ub_ctx_delete 3ub_ctx_get_option 4ub_ctx_set_option 5ub_ctx_config 6ub_ctx_set_fwd 7ub_ctx_resolvconf 8ub_ctx_hosts 9ub_ctx_add_ta 10ub_ctx_add_ta_file 11ub_ctx_trustedkeys 12ub_ctx_debugout 13ub_ctx_debuglevel 14ub_ctx_async 15ub_poll 16ub_wait 17ub_fd 18ub_process 19ub_resolve 20ub_resolve_async 21ub_cancel 22ub_resolve_free 23ub_strerror 24ub_ctx_print_local_zones 25ub_ctx_zone_add 26ub_ctx_zone_remove 27ub_ctx_data_add 28ub_ctx_data_remove 29ub_version 30