24 lines
462 B
Go
24 lines
462 B
Go
package util
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import (
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"context"
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"net"
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)
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type checker struct{}
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var Checker checker
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func (checker) NetOk() bool {
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r := &net.Resolver{ //指定DNS，防止本地DNS缓存影响
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PreferGo: true,
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Dial: NetDailEr(),
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}
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if ip, err := r.LookupIP(context.Background(), "ip4", "www.msftconnecttest.com"); err != nil { //通过DNS确认是否在线
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return false
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} else if len(ip) == 0 || ip[0].String() != "13.107.4.52" {
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return false
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}
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return true
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}
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