Add IPv6 support to TorLookupIP() in btcd/connmgr/tor.go

[githorray]

btcd/connmgr/tor.go

Line 54 in f673a4b

func TorLookupIP(host, proxy string) ([]net.IP, error) {

Currently TorLookupIP() does not support IPv6 resolution. Tor now supports IPv6. This function is used in a project (https://github.com/lightningnetwork/lnd) that may at some point attempt to use TorLookupIP() for IPv6 resolution. This was last touched on in 2013. #38 #39

// TorLookupIP uses Tor to resolve DNS via the SOCKS extension they provide for
// resolution over the Tor network. Tor itself doesn't support ipv6 so this
// doesn't either.
func TorLookupIP(host, proxy string) ([]net.IP, error) {

tor-resolve supports both IPv4/IPv6 as an example: https://github.com/torproject/tor/blob/master/src/tools/tor-resolve.c

[tylerchambers]

Is there a way to do this without running a minimal dns server in btcd?