// findHostAnnouncements returns a list of the host announcements found within // a given block. No check is made to see that the ip address found in the // announcement is actually a valid ip address. func findHostAnnouncements(b types.Block) (announcements []modules.HostDBEntry) { for _, t := range b.Transactions { // the HostAnnouncement must be prefaced by the standard host // announcement string for _, arb := range t.ArbitraryData { addr, pubKey, err := modules.DecodeAnnouncement(arb) if err != nil { continue } // Add the announcement to the slice being returned. var host modules.HostDBEntry host.NetAddress = addr host.PublicKey = pubKey announcements = append(announcements, host) } } return }