// ResolveUnspecifiedAddress expands an unspecified ip addresses (/ip4/0.0.0.0, /ip6/::) to
// use the known local interfaces. If ifaceAddr is nil, we request interface addresses
// from the network stack. (this is so you can provide a cached value if resolving many addrs)
func ResolveUnspecifiedAddress(resolve ma.Multiaddr, ifaceAddrs []ma.Multiaddr) ([]ma.Multiaddr, error) {
// split address into its components
split := ma.Split(resolve)
// if first component (ip) is not unspecified, use it as is.
if !manet.IsIPUnspecified(split[0]) {
return []ma.Multiaddr{resolve}, nil
}
out := make([]ma.Multiaddr, 0, len(ifaceAddrs))
for _, ia := range ifaceAddrs {
// must match the first protocol to be resolve.
if ia.Protocols()[0].Code != resolve.Protocols()[0].Code {
continue
}
split[0] = ia
joined := ma.Join(split...)
out = append(out, joined)
log.Debug("adding resolved addr:", resolve, joined, out)
}
if len(out) < 1 {
return nil, fmt.Errorf("failed to resolve: %s", resolve)
}
return out, nil
}
func toPeerInfo(bp config.BootstrapPeer) peer.PeerInfo {
// for now, we drop the "ipfs addr" part of the multiaddr. the rest
// of the codebase currently uses addresses without the peerid part.
m := bp.Multiaddr()
s := ma.Split(m)
m = ma.Join(s[:len(s)-1]...)
return peer.PeerInfo{
ID: bp.ID(),
Addrs: []ma.Multiaddr{m},
}
}
func Transport(iaddr IPFSAddr) (maddr ma.Multiaddr) {
maddr = iaddr.Multiaddr()
split := ma.Split(maddr)
maddr = ma.Join(split[:len(split)-1]...)
return
}