Function NewNetAddressString

p2p/netaddress.go:70–112

NewNetAddressString returns a new NetAddress using the provided address in the form of "ID@IP:Port". Also resolves the host if host is not an IP. Errors are of type ErrNetAddressXxx where Xxx is in (NoID, Invalid, Lookup)

(addr string)

// Also resolves the host if host is not an IP.
// Errors are of type ErrNetAddressXxx where Xxx is in (NoID, Invalid, Lookup)
func NewNetAddressString(addr string) (*NetAddress, error) {
	addrWithoutProtocol := removeProtocolIfDefined(addr)
	spl := strings.Split(addrWithoutProtocol, "@")
	if len(spl) != 2 {
		return nil, ErrNetAddressNoID{addr}
	}

	// get ID
	if err := validateID(ID(spl[0])); err != nil {
		return nil, ErrNetAddressInvalid{addrWithoutProtocol, err}
	}
	var id ID
	id, addrWithoutProtocol = ID(spl[0]), spl[1]

	// get host and port
	host, portStr, err := net.SplitHostPort(addrWithoutProtocol)
	if err != nil {
		return nil, ErrNetAddressInvalid{addrWithoutProtocol, err}
	}
	if len(host) == 0 {
		return nil, ErrNetAddressInvalid{
			addrWithoutProtocol,
			errors.New("host is empty")}
	}

	ip := net.ParseIP(host)
	if ip == nil {
		ips, err := net.LookupIP(host)
		if err != nil {
			return nil, ErrNetAddressLookup{host, err}
		}
		ip = ips[0]
	}

	port, err := strconv.ParseUint(portStr, 10, 16)
	if err != nil {
		return nil, ErrNetAddressInvalid{portStr, err}
	}

	na := NewNetAddressIPPort(ip, uint16(port))
	na.ID = id
	return na, nil
}

// NewNetAddressStrings returns an array of NetAddress'es build using
// the provided strings.