Building Ipv4 returns other values than introduced

[emurgo]

Building Ipv4 returns other values than introduced

[ecioppettini]

I just took a quick glance, so I may be missing something, but I think this line should probably be data instead of data[..4].

Otherwise it will never return the wrong length error (and may even panic if the input is shorter).

[v-almonacid]

Unfortunately the JS API is not very descriptive, and sometimes it's better to look in the rust source code to get a more precise idea about the expected data types. In this case, Ipv4 is actually

pub struct Ipv4([u8; 4]);

So it expects an array of 4 bytes, as a regular IP is actually defined at the low level.

You should probably try something like:

const bytes = [127, 0, 0, 1];
const ipv4 = Ipv4.new(Buffer.from(bytes));

[jvieiro]

Unfortunately the JS API is not very descriptive, and sometimes it's better to look in the rust source code to get a more precise idea about the expected data types. In this case, Ipv4 is actually

pub struct Ipv4([u8; 4]);

So it expects an array of 4 bytes, as a regular IP is actually defined at the low level.

You should probably try something like:

const bytes = [127, 0, 0, 1];
const ipv4 = Ipv4.new(Buffer.from(bytes));

It worked for me, thanks!