gfwproxyshadowsocksdocker-imagegogolanggvisornatnetworksocks4socks5tcpip-stacktortun-devicetun2sockstunneludpwireguard
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69 lines
1.4 KiB
69 lines
1.4 KiB
package metadata
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import (
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"net"
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"strconv"
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)
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// Metadata contains metadata of transport protocol sessions.
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type Metadata struct {
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Network Network `json:"network"`
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SrcIP net.IP `json:"sourceIP"`
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MidIP net.IP `json:"dialerIP"`
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DstIP net.IP `json:"destinationIP"`
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SrcPort uint16 `json:"sourcePort"`
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MidPort uint16 `json:"dialerPort"`
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DstPort uint16 `json:"destinationPort"`
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}
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func (m *Metadata) DestinationAddress() string {
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return net.JoinHostPort(m.DstIP.String(), strconv.FormatUint(uint64(m.DstPort), 10))
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}
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func (m *Metadata) SourceAddress() string {
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return net.JoinHostPort(m.SrcIP.String(), strconv.FormatUint(uint64(m.SrcPort), 10))
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}
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func (m *Metadata) Addr() net.Addr {
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if udpAddr := m.UDPAddr(); udpAddr != nil {
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return udpAddr
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}
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return &Addr{metadata: m}
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}
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func (m *Metadata) TCPAddr() *net.TCPAddr {
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if m.Network != TCP || m.DstIP == nil {
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return nil
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}
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return &net.TCPAddr{
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IP: m.DstIP,
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Port: int(m.DstPort),
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}
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}
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func (m *Metadata) UDPAddr() *net.UDPAddr {
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if m.Network != UDP || m.DstIP == nil {
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return nil
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}
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return &net.UDPAddr{
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IP: m.DstIP,
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Port: int(m.DstPort),
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}
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}
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// Addr implements the net.Addr interface.
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type Addr struct {
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metadata *Metadata
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}
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func (a *Addr) Metadata() *Metadata {
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return a.metadata
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}
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func (a *Addr) Network() string {
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return a.metadata.Network.String()
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}
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func (a *Addr) String() string {
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return a.metadata.DestinationAddress()
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}
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