Comparison

util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)

comparison

equal deleted inserted replaced

-:e108c3f97f26
+:8c1a3243d16f
 	end
 	self.scope = value;
 	return value;
 end
+function ip_methods:private()
+	local private = self.scope ~= 0xE;
+	if not private and self.proto == "IPv4" then
+		local ip = self.addr;
+		local fields = {};
+		ip:gsub("([^.]*).?", function (c) fields[#fields + 1] = tonumber(c) end);
+		if fields[1] == 127 or fields[1] == 10 or (fields[1] == 192 and fields[2] == 168)
+		or (fields[1] == 172 and (fields[2] >= 16 or fields[2] <= 32)) then
+			private = true;
+		end
+	end
+	self.private = private;
+	return private;
+end
 return {new_ip = new_ip,
 	commonPrefixLength = commonPrefixLength};