feat(retrievalprovider): prioritize announce addresses over host addr…

…esses

If announce addresses are configured, the retrieval provider now prioritizes
these over the addresses directly obtained from the host. This allows fora more controlled announcement of addresses in libp2p networks.

retrievalprovider/transports.go

@@ -22,12 +22,22 @@ func NewTransportsListener(h host.Host, cfg *config.MarketConfig) (*TransportsLi
 	var protos []types.Protocol
 
 	// Get the libp2p addresses from the Host
-	if len(h.Addrs()) > 0 {
-		protos = append(protos, types.Protocol{
-			Name:      "libp2p",
-			Addresses: h.Addrs(),
-		})
+	var maddrs []multiaddr.Multiaddr
+	switch {
+	case len(cfg.Libp2p.AnnounceAddresses) > 0:
+		for i, _ := range cfg.Libp2p.AnnounceAddresses {
+			maddr, err := multiaddr.NewMultiaddr(cfg.Libp2p.AnnounceAddresses[i])
+			if err == nil {
+				maddrs = append(maddrs, maddr)
+			}
+		}
+	case len(h.Addrs()) > 0:
+		maddrs = h.Addrs()
 	}
+	protos = append(protos, types.Protocol{
+		Name:      "libp2p",
+		Addresses: maddrs,
+	})
 
 	// If there's an http retrieval address specified, add HTTP to the list
 	// of supported protocols