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vender/github.com/ccding/go-stun/stun/host.go

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+// Copyright 2013, Cong Ding. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Author: Cong Ding <dinggnu@gmail.com>
+
+package stun
+
+import (
+	"net"
+	"strconv"
+)
+
+// Host defines the network address including address family, IP address and port.
+type Host struct {
+	family uint16
+	ip     string
+	port   uint16
+}
+
+func newHostFromStr(s string) *Host {
+	udpAddr, err := net.ResolveUDPAddr("udp", s)
+	if err != nil {
+		return nil
+	}
+	host := new(Host)
+	if udpAddr.IP.To4() != nil {
+		host.family = attributeFamilyIPv4
+	} else {
+		host.family = attributeFamilyIPV6
+	}
+	host.ip = udpAddr.IP.String()
+	host.port = uint16(udpAddr.Port)
+	return host
+}
+
+// Family returns the family type of a host (IPv4 or IPv6).
+func (h *Host) Family() uint16 {
+	return h.family
+}
+
+// IP returns the internet protocol address of the host.
+func (h *Host) IP() string {
+	return h.ip
+}
+
+// Port returns the port number of the host.
+func (h *Host) Port() uint16 {
+	return h.port
+}
+
+// TransportAddr returns the transport layer address of the host.
+func (h *Host) TransportAddr() string {
+	return net.JoinHostPort(h.ip, strconv.Itoa(int(h.port)))
+}
+
+// String returns the string representation of the host address.
+func (h *Host) String() string {
+	return h.TransportAddr()
+}