settings put global captive_portal_detection_enabled 1 settings put global captive_portal_mode 1 settings put global captive_portal_use_https 0 settings put global captive_portal_server developers.google.cn settings put global captive_portal_http_url http://developers.google.cn/generate_204 settings put global captive_portal_https_url https://developers.google.cn/generate_204