[英]How do I convert hex (buffer) to IPv6 in javascript
I have a buffer that contains a hex representation of an IPv6 address. 我有一个缓冲区,其中包含IPv6地址的十六进制表示。 How exactly do I convert it to an actual IPv6 representation?
如何将其准确转换为实际的IPv6表示形式?
// IP_ADDRESS is a buffer that holds the hex value of the IPv6 addr.
let IP_ADDRESS_HEX = IP_ADDRESS.toString('hex');
// 01000000000000000000000000000600
I don't actually mind using a simple lib if it offers a conversion function. 我真的不介意使用一个简单的库,如果它提供转换功能。
I do not know if I really answer to your question, but to convert the string IP_ADDRESS_HEX
to an IPv6 address representation, I would use String.slice() to split IP_ADDRESS_HEX
in 8 groups and use String.join() to add the ":" between these groups. 我不知道我是否真的回答了您的问题,但是要将字符串
IP_ADDRESS_HEX
转换为IPv6地址表示形式,我将使用String.slice()将IP_ADDRESS_HEX
分为8组,并使用String.join()添加“:”。在这些群体之间。
var IP_ADDRESS_HEX = "01000000000000000000000000000600";
var i = 0;
var a = [];
while (i != 8) {
a[i] = IP_ADDRESS_HEX.slice(i * 4, (i * 4) + 4);
i++;
}
result = a.join(":");
Of course, it only works when IP_ADDRESS_HEX
has exactly 32 characters. 当然,仅当
IP_ADDRESS_HEX
具有精确的32个字符时,它才起作用。
If your IP_ADDRESS_HEX always has the same size, you can do the following. 如果您的IP_ADDRESS_HEX大小始终相同,则可以执行以下操作。 If not you need to pad the string as well.
如果不是,则还需要填充字符串。
'01000000000000000000000000000600'
.match(/.{1,4}/g)
.join(':')
// "0100:0000:0000:0000:0000:0000:0000:0600"
You can also shorten certain blocks, but this is not a necessity eg ffff:0000:0000:0000:0000:0000
would become ffff::
but both are valid. 您也可以缩短某些块,但这不是必需的,例如
ffff:0000:0000:0000:0000:0000
会变成ffff::
但两者都是有效的。
If you still want it full spec you can do it like this 如果您仍然希望它具有完整的规格,可以这样做
'01000000000000000000000000000600'
.match(/.{1,4}/g)
.map((val) => val.replace(/^0+/, ''))
.join(':')
.replace(/0000\:/g, ':')
.replace(/:{2,}/g, '::')
// "100::600"
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