I mean the hostnames used by I2P itself. They behave like normal hostnames, but they don't require any DNS-style resolution because they contain your public keys inside the hostname itself. They are equivalent to .onion addresses in Tor, except a lot longer.
I understand that, you are saying that you have an id of who you want to talk to. The problem is, where do you start looking? Even with .onion you need an entry point to the tor network. It can be a DNS server, a web server, or whatever; but it must be hard coded (unless you start broadcasting on the local network looking for an entry, which I havent seen an example of). That is the problem. The first entry point can easily be taken down.
You have to bootstrap onto the I2P network initially. There are several IPs hardcoded into the router by the I2P project, which are run by volunteers. If these IPs are blocked in your country, you are out of luck.
There are a few possible solutions to this. First, allow users to add new bootstrap nodes to the app. Second, provide "meshnet" functionality to the app. I am considering both. The latter is much more complex to implement, but Android provides an API called Wi-Fi Direct which I could conceivably use to connect Nightweb nodes together if they are in close proximity. I'm open to other ideas.
