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server.go
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server.go
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package glutton
import (
"errors"
"fmt"
"net"
"github.com/seud0nym/tproxy-go/tproxy"
)
type Server struct {
tcpListener net.Listener
udpListener *net.UDPConn
tcpPort uint
udpPort uint
}
func NewServer(tcpPort, udpPort uint) *Server {
s := &Server{
tcpPort: tcpPort,
udpPort: udpPort,
}
return s
}
func (s *Server) Start() error {
tcpAddr, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("127.0.0.1:%d", s.tcpPort))
if err != nil {
return err
}
if s.tcpListener, err = tproxy.ListenTCP("tcp4", tcpAddr); err != nil {
return err
}
udpAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("127.0.0.1:%d", s.udpPort))
if err != nil {
return err
}
if s.udpListener, err = tproxy.ListenUDP("udp4", udpAddr); err != nil {
return err
}
if s.udpListener == nil {
return errors.New("nil udp listener")
}
return nil
}
func (s *Server) Shutdown() error {
var err error
if s.tcpListener != nil {
println("closing tcp listener")
err = s.tcpListener.Close()
}
if s.udpListener != nil {
println("closing udp listener")
err = s.udpListener.Close()
}
return err
}