setSocks5Proxy
fun setSocks5Proxy(host: String?, port: Int = 0, username: String? = null, password: String? = null)
Route all outbound TCP peer/tracker dials through a SOCKS5 proxy (RFC 1928; RFC-1929 username/password auth when username is given). Pass null to go direct. UDP transports (µTP/DHT) are not yet proxied. The port of settings_pack's proxy_* knobs.