// 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
}
