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This test makes sure that TCP works on the real internet (where buffering
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is used, unlike over the loopback interface). This test works by
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using the real server for www.example.com as the upstream server, and
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making a query to that server.
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Note that this test will need to be revised if the real server for
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www.example.com changes or the data for www.example.com changes.
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That in mind, this test is done first because it will fail every
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time the server/data for www.example.com changes but this test
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isn't updated to reflect those changes.