forked from xjasonlyu/tun2socks
/
tracker.go
151 lines (124 loc) · 3.28 KB
/
tracker.go
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package statistic
import (
"errors"
"net"
"time"
"github.com/google/uuid"
"go.uber.org/atomic"
M "github.com/kelleygo/tun2socks/v2/metadata"
)
type tracker interface {
ID() string
Close() error
}
type trackerInfo struct {
Start time.Time `json:"start"`
UUID uuid.UUID `json:"id"`
Metadata *M.Metadata `json:"metadata"`
UploadTotal *atomic.Int64 `json:"upload"`
DownloadTotal *atomic.Int64 `json:"download"`
}
type tcpTracker struct {
net.Conn `json:"-"`
*trackerInfo
manager *Manager
}
func NewTCPTracker(conn net.Conn, metadata *M.Metadata, manager *Manager) net.Conn {
id, _ := uuid.NewRandom()
tt := &tcpTracker{
Conn: conn,
manager: manager,
trackerInfo: &trackerInfo{
UUID: id,
Start: time.Now(),
Metadata: metadata,
UploadTotal: atomic.NewInt64(0),
DownloadTotal: atomic.NewInt64(0),
},
}
manager.Join(tt)
return tt
}
// DefaultTCPTracker returns a new net.Conn(*tcpTacker) with default manager.
func DefaultTCPTracker(conn net.Conn, metadata *M.Metadata) net.Conn {
return NewTCPTracker(conn, metadata, DefaultManager)
}
func (tt *tcpTracker) ID() string {
return tt.UUID.String()
}
func (tt *tcpTracker) Read(b []byte) (int, error) {
n, err := tt.Conn.Read(b)
download := int64(n)
tt.manager.PushDownloaded(download)
tt.DownloadTotal.Add(download)
return n, err
}
func (tt *tcpTracker) Write(b []byte) (int, error) {
n, err := tt.Conn.Write(b)
upload := int64(n)
tt.manager.PushUploaded(upload)
tt.UploadTotal.Add(upload)
return n, err
}
func (tt *tcpTracker) Close() error {
tt.manager.Leave(tt)
return tt.Conn.Close()
}
func (tt *tcpTracker) CloseRead() error {
if cr, ok := tt.Conn.(interface{ CloseRead() error }); ok {
return cr.CloseRead()
}
return errors.New("CloseRead is not implemented")
}
func (tt *tcpTracker) CloseWrite() error {
if cw, ok := tt.Conn.(interface{ CloseWrite() error }); ok {
return cw.CloseWrite()
}
return errors.New("CloseWrite is not implemented")
}
type udpTracker struct {
net.PacketConn `json:"-"`
*trackerInfo
manager *Manager
}
func NewUDPTracker(conn net.PacketConn, metadata *M.Metadata, manager *Manager) net.PacketConn {
id, _ := uuid.NewRandom()
ut := &udpTracker{
PacketConn: conn,
manager: manager,
trackerInfo: &trackerInfo{
UUID: id,
Start: time.Now(),
Metadata: metadata,
UploadTotal: atomic.NewInt64(0),
DownloadTotal: atomic.NewInt64(0),
},
}
manager.Join(ut)
return ut
}
// DefaultUDPTracker returns a new net.PacketConn(*udpTacker) with default manager.
func DefaultUDPTracker(conn net.PacketConn, metadata *M.Metadata) net.PacketConn {
return NewUDPTracker(conn, metadata, DefaultManager)
}
func (ut *udpTracker) ID() string {
return ut.UUID.String()
}
func (ut *udpTracker) ReadFrom(b []byte) (int, net.Addr, error) {
n, addr, err := ut.PacketConn.ReadFrom(b)
download := int64(n)
ut.manager.PushDownloaded(download)
ut.DownloadTotal.Add(download)
return n, addr, err
}
func (ut *udpTracker) WriteTo(b []byte, addr net.Addr) (int, error) {
n, err := ut.PacketConn.WriteTo(b, addr)
upload := int64(n)
ut.manager.PushUploaded(upload)
ut.UploadTotal.Add(upload)
return n, err
}
func (ut *udpTracker) Close() error {
ut.manager.Leave(ut)
return ut.PacketConn.Close()
}