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Replace custom private IP range check with built-in net.IP.IsPrivate() method

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This commit is contained in:
kumapower17
2025-10-15 23:41:19 +08:00
committed by Martti T.
parent 40e2e8faf9
commit e644ff8f7b
1 changed files with 1 additions and 11 deletions
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12
ip.go
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@@ -179,16 +179,6 @@ func newIPChecker(configs []TrustOption) *ipChecker {
return checker
}
// Go1.16+ added `ip.IsPrivate()` but until that use this implementation
func isPrivateIPRange(ip net.IP) bool {
if ip4 := ip.To4(); ip4 != nil {
return ip4[0] == 10 ||
ip4[0] == 172 && ip4[1]&0xf0 == 16 ||
ip4[0] == 192 && ip4[1] == 168
}
return len(ip) == net.IPv6len && ip[0]&0xfe == 0xfc
}
func (c *ipChecker) trust(ip net.IP) bool {
if c.trustLoopback && ip.IsLoopback() {
return true
@@ -196,7 +186,7 @@ func (c *ipChecker) trust(ip net.IP) bool {
if c.trustLinkLocal && ip.IsLinkLocalUnicast() {
return true
}
if c.trustPrivateNet && isPrivateIPRange(ip) {
if c.trustPrivateNet && ip.IsPrivate() {
return true
}
for _, trustedRange := range c.trustExtraRanges {