InetSocketAddress(URL, PORT) takes lot of time to throw exception

StackOverflow https://stackoverflow.com/questions/21349771

题

  1. Connection to Internet is removed. DNS is properly configured.

    Try running the following line:-

    new InetSocketAddress(URL, PORT);

    This takes around 56 seconds to throw UnknownHostException.

  2. Connection to Internet is removed. DNS is not configured.

    Try running the following line:-

    new InetSocketAddress(URL, PORT);

    This takes less than 2 seconds to throw UnknownHostException.

Why?

Is there any solution to quickly throw Exception in Scenario 1?

没有正确的解决方案

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