[Nfd-dev] NFD Android

[Junxiao Shi]

Hi Peter

Android apps usually connect to local NFD via TCP, because jNDN library does not natively support Unix sockets.
NFD-Android itself definitely cannot listen on the usual Unix socket endpoint /var/run/nfd.sock on an unrooted device because that path is only writable by root. I do not know whether there is an alternate location.

KeyChain can be placed on the SD card, but it’s unsafe because SD card is not encrypted and an attacker can pull out of the SD card when the device is powered off.
Alternatively, every app can have its own KeyChain in its data directory, which is protected by the OS.
I don’t know where NFD-Android stores its own KeyChain, and more importantly, how to insert a certificate into that KeyChain so that I can have auto prefix propagation.

Yours, Junxiao

> On Jul 18, 2017, at 12:50 PM, Gusev, Peter <peter at remap.ucla.edu> wrote:
> 
> Hi devs,
> 
> How do Android apps communicate with NFD in the NDN app? I suppose apps on Android are sandboxed similarly to iOS (is this wrong?) and not sure how my app would create a unix socket connection with NFD. Likewise, how the app would access the keychain? (disclaimer: my app uses NDN-CPP)
> 
> Thanks, 
> 
> -- 
> Peter Gusev

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