Link local (#53)

YoshiyukiMineo · fcrisciani · web-flow · commit a0558cef64f5 · 2024-04-30T15:06:58.000+09:00
* Allow IPv4 Link Local addresses (#50) * Allow IPv4 Link Local addresses Allow the use of link local addresses * Update sonyflake.go * Update sonyflake.go * Update a comment --------- Co-authored-by: Flavio Crisciani <f.crisciani@gmail.com>
diff --git a/sonyflake.go b/sonyflake.go
@@ -178,8 +178,9 @@ func privateIPv4(interfaceAddrs types.InterfaceAddrs) (net.IP, error) {
 }
 
 func isPrivateIPv4(ip net.IP) bool {
+	// Allow private IP addresses (RFC1918) and link-local addresses (RFC3927)
 	return ip != nil &&
-		(ip[0] == 10 || ip[0] == 172 && (ip[1] >= 16 && ip[1] < 32) || ip[0] == 192 && ip[1] == 168)
+		(ip[0] == 10 || ip[0] == 172 && (ip[1] >= 16 && ip[1] < 32) || ip[0] == 192 && ip[1] == 168 || ip[0] == 169 && ip[1] == 254)
 }
 
 func lower16BitPrivateIP(interfaceAddrs types.InterfaceAddrs) (uint16, error) {

Original file line number	Diff line number	Diff line change
`@@ -178,8 +178,9 @@ func privateIPv4(interfaceAddrs types.InterfaceAddrs) (net.IP, error) {`
`178`	`178`	`}`
`179`	`179`
`180`	`180`	`func isPrivateIPv4(ip net.IP) bool {`
	`181`	`+ // Allow private IP addresses (RFC1918) and link-local addresses (RFC3927)`
`181`	`182`	`return ip != nil &&`
`182`		`- (ip[0] == 10 \|\| ip[0] == 172 && (ip[1] >= 16 && ip[1] < 32) \|\| ip[0] == 192 && ip[1] == 168)`
	`183`	`+ (ip[0] == 10 \|\| ip[0] == 172 && (ip[1] >= 16 && ip[1] < 32) \|\| ip[0] == 192 && ip[1] == 168 \|\| ip[0] == 169 && ip[1] == 254)`
`183`	`184`	`}`
`184`	`185`
`185`	`186`	`func lower16BitPrivateIP(interfaceAddrs types.InterfaceAddrs) (uint16, error) {`