expectedResult string
	}{
		{[]string{"/d1", "/d2", "d3", "d4"}, "127.0.0.1:9000"},
		{
			[]string{"http://localhost:9000/d1", "http://localhost:9000/d2", "http://example.org:9000/d3", "http://example.com:9000/d4"},
			"localhost:9000",
		},
		{
			[]string{"http://localhost:9000/d1", "http://example.org:9000/d2", "http://example.com:9000/d3", "http://example.net:9000/d4"},
			"localhost:9000",
		},
		{