mirror of https://github.com/v2fly/v2ray-core.git
156 lines
3.3 KiB
Go
156 lines
3.3 KiB
Go
package net
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import (
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"net"
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"strconv"
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"github.com/v2ray/v2ray-core/common/errors"
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"github.com/v2ray/v2ray-core/common/log"
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)
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// Address represents a network address to be communicated with. It may be an IP address or domain
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// address, not both. This interface doesn't resolve IP address for a given domain.
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type Address interface {
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IP() net.IP // IP of this Address
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Domain() string // Domain of this Address
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Port() uint16 // Port of this Address
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PortBytes() []byte // Port in bytes, network byte order
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IsIPv4() bool // True if this Address is an IPv4 address
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IsIPv6() bool // True if this Address is an IPv6 address
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IsDomain() bool // True if this Address is an domain address
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String() string // String representation of this Address
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}
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// IPAddress creates an Address with given IP and port.
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func IPAddress(ip []byte, port uint16) Address {
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switch len(ip) {
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case net.IPv4len:
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return IPv4Address{
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PortAddress: PortAddress{port: port},
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ip: [4]byte{ip[0], ip[1], ip[2], ip[3]},
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}
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case net.IPv6len:
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return IPv6Address{
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PortAddress: PortAddress{port: port},
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ip: [16]byte{
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ip[0], ip[1], ip[2], ip[3],
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ip[4], ip[5], ip[6], ip[7],
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ip[8], ip[9], ip[10], ip[11],
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ip[12], ip[13], ip[14], ip[15],
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},
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}
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default:
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log.Error(errors.NewIPFormatError(ip).Error())
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return nil
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}
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}
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// DomainAddress creates an Address with given domain and port.
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func DomainAddress(domain string, port uint16) Address {
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return DomainAddressImpl{
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domain: domain,
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PortAddress: PortAddress{port: port},
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}
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}
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type PortAddress struct {
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port uint16
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}
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func (addr PortAddress) Port() uint16 {
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return addr.port
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}
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func (addr PortAddress) PortBytes() []byte {
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return []byte{byte(addr.port >> 8), byte(addr.port)}
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}
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type IPv4Address struct {
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PortAddress
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ip [4]byte
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}
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func (addr IPv4Address) IP() net.IP {
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return net.IP(addr.ip[:])
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}
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func (addr IPv4Address) Domain() string {
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panic("Calling Domain() on an IPv4Address.")
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}
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func (addr IPv4Address) IsIPv4() bool {
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return true
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}
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func (addr IPv4Address) IsIPv6() bool {
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return false
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}
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func (addr IPv4Address) IsDomain() bool {
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return false
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}
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func (addr IPv4Address) String() string {
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return addr.IP().String() + ":" + strconv.Itoa(int(addr.PortAddress.port))
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}
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type IPv6Address struct {
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PortAddress
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ip [16]byte
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}
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func (addr IPv6Address) IP() net.IP {
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return net.IP(addr.ip[:])
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}
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func (addr IPv6Address) Domain() string {
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panic("Calling Domain() on an IPv6Address.")
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}
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func (addr IPv6Address) IsIPv4() bool {
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return false
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}
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func (addr IPv6Address) IsIPv6() bool {
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return true
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}
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func (addr IPv6Address) IsDomain() bool {
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return false
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}
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func (addr IPv6Address) String() string {
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return "[" + addr.IP().String() + "]:" + strconv.Itoa(int(addr.PortAddress.port))
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}
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type DomainAddressImpl struct {
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PortAddress
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domain string
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}
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func (addr DomainAddressImpl) IP() net.IP {
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panic("Calling IP() on a DomainAddress.")
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}
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func (addr DomainAddressImpl) Domain() string {
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return addr.domain
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}
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func (addr DomainAddressImpl) IsIPv4() bool {
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return false
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}
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func (addr DomainAddressImpl) IsIPv6() bool {
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return false
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}
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func (addr DomainAddressImpl) IsDomain() bool {
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return true
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}
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func (addr DomainAddressImpl) String() string {
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return addr.domain + ":" + strconv.Itoa(int(addr.PortAddress.port))
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}
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