Is there any config option to disable public network connection?

[schemacs]

I want to do file sharing in the local private network, and don't want to even receive any piece of data from the public network, is there any config to do this?

[anacrolix]

You can use the IPBlocklist option in Config, http://godoc.org/github.com/anacrolix/torrent#Config. Set IP ranges that block everything you don't want. There are only a few private network ranges in IPv4, so it should only take a few ranges. Or you could just block all the ranges you're not interested in. Here's an example based on common ranges:

Public network:0.0.0.0-9.255.255.255
Public network:11.0.0.0-126.255.255.255
Public network:128.0.0.0-192.167.255.255
Public network:192.169.0.0-255.255.255.255

This would allow 10/8, 127/8, 192.168/16. You could create this using http://godoc.org/github.com/anacrolix/torrent/iplist#NewFromReader, see the tests for examples: https://github.com/anacrolix/torrent/blob/master/iplist/iplist_test.go#L14.

See https://en.wikipedia.org/wiki/Reserved_IP_addresses

There's also the Config.DisableIPv6 option, if you don't want to have to deal with IPv6.

[anacrolix]

Can I get your thoughts on this? A few people have mentioned the use of this project for private clouds. Perhaps a config option/pull-request/supplementary package is in order to facilitate this.