Try to resolve AS info for IP addresses without PTR

[hexchain]

Currently, if an IP address of a hop does not have a reverse record, then its AS info also won't be looked up. This seems like a pretty strange limitation.

Would it be sensible to enable AS info lookup for all IP addresses, regardless of whether PTR exists?

[fujiapple852]

Thanks @hexchain, I agree that it makes sense to try and lookup AS info for all IP addresses.

I'll include this in the next release, if you want to try it out now you can build from #480

[fujiapple852]

Aside: Trippy looks up additional data about each AS, specifically:

pub struct AsInfo {
    pub asn: String,
    pub prefix: String,
    pub cc: String,
    pub registry: String,
    pub allocated: String,
    pub name: String,
}

Currently only asn (i.e. AS15169) is displayed, but we could display any/all of the other fields. Most useful is name (i.e. "GOOGLE, US") but this is often quite long so perhaps not well suited to be displayed in the hops table.

[fujiapple852]

@hexchain also added a new --tui-as-mode config argument to specify what to display, see #483

[fujiapple852]

@hexchain 0.8.0 which includes this change has been released: https://github.com/fujiapple852/trippy/releases/tag/0.8.0

[hexchain]

Thank you!