config test-url 'android'
    option url 'http://connectivitycheck.gstatic.com/generate_204'
    option readonly '1'

config test-url 'microsoft'
    option url 'http://www.msftconnecttest.com/connecttest.txt'
    option readonly '1'

config test-url 'apple'
    option url 'http://captive.apple.com/hotspot-detect.html'
    option readonly '1'

config test-url 'qualcomm'
    option url 'http://www.qualcomm.cn/generate_204'
    option readonly '1'

config timer 'period'
    option timeout '180'
