Update gomod

[MggMuggins]

I chose to cast all the parameters of util.CanonicalNetworkAddress to the larger int64 rather than converting all port variables to int64 (as in canonical/lxd#13078) as it prevents needing to cast to a smaller int when calling into mdns. That said I'm not attached to one approach or another.

[roosterfish]

LGTM!

However I am wondering if there could ever be a port number bigger than the 16 bit unsigned int? Is it that just on some systems the underlying data type is different?
If so wouldn't it be more straightforward to use int64 as type for the port number and convert this number to an int only for the mDNS library?
We could do some checks against math.MaxInt for the upper limit before we try to convert the port number.

[tomponline]

I would tend to agree with this idea of only converting where you need it.

[MggMuggins]

To clarify @tomponline, you would prefer that int64 be used everywhere in microcloud as opposed to int for ports?

[tomponline]

To clarify @tomponline, you would prefer that int64 be used everywhere in microcloud as opposed to int for ports?

Yeah I think that makes sense - as it avoids the variable size of int on non-64 bit platforms (even though in practice it'll most commonly be on 64 bit platforms).

[markylaing]

LGTM. Thanks :)

[roosterfish]

Thanks, looking good!