我不明白如何處理從網(wǎng)絡(luò)包接收的錯誤。我需要知道發(fā)生了什么類型的錯誤才能執(zhí)行下一步。嘗試解析錯誤消息字符串可能不是正確的方法...response, err := data.httpClient.Get("https://" + domain)if err != nil { fmt.Println("[!] error: ", err) /* * I want something like this in pseudo code: * if error == DnsLookupError { * action1() * } else if error == TlsCertificateError { * action2() * } else if error == Timeout { * action3() * } ... */}例如，我收到的錯誤消息：Get "https://example1.com": remote error: tls: internal errorGet "https://example2.com": dial tcp: lookup example2.cometc.
1 回答
FFIVE
TA貢獻(xiàn)1797條經(jīng)驗(yàn) 獲得超6個贊
您可以檢查錯誤是否與一些已知的錯誤類型兼容。我是這樣做的：
func classifyNetworkError(err error) string {
cause := err
for {
// Unwrap was added in Go 1.13.
// See https://github.com/golang/go/issues/36781
if unwrap, ok := cause.(interface{ Unwrap() error }); ok {
cause = unwrap.Unwrap()
continue
}
break
}
// DNSError.IsNotFound was added in Go 1.13.
// See https://github.com/golang/go/issues/28635
if cause, ok := cause.(*net.DNSError); ok && cause.Err == "no such host" {
return "name not found"
}
if cause, ok := cause.(syscall.Errno); ok {
if cause == 10061 || cause == syscall.ECONNREFUSED {
return "connection refused"
}
}
if cause, ok := cause.(net.Error); ok && cause.Timeout() {
return "timeout"
}
return sprintf("unknown network error: %s", err)
}
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