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addr_factory.go
38 lines (32 loc) · 939 Bytes
/
addr_factory.go
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package p2p
import (
"strings"
"github.com/libp2p/go-libp2p/config"
ma "github.com/multiformats/go-multiaddr"
)
// withRelayAddrs returns an AddrFactory which will return Multiaddr via
// specified relay string in addition to existing MultiAddr.
func withRelayAddrs(relay string) config.AddrsFactory {
return func(addrs []ma.Multiaddr) []ma.Multiaddr {
if relay == "" {
return addrs
}
var relayAddrs []ma.Multiaddr
for _, a := range addrs {
if strings.Contains(a.String(), "/p2p-circuit") {
continue
}
relayAddr, err := ma.NewMultiaddr(relay + "/p2p-circuit" + a.String())
if err != nil {
log.WithError(err).Error("Failed to create multiaddress for relay node")
} else {
relayAddrs = append(relayAddrs, relayAddr)
}
}
if len(relayAddrs) == 0 {
log.Warn("Addresses via relay node are zero - using non-relay addresses")
return addrs
}
return append(addrs, relayAddrs...)
}
}