func startSvr(tu *Tunnel) {
go func() {
logger.Init("")
defer logger.Finalize()
Run(tu)
}()
}
func main() {
flag.UintVar(&ePort, "eport", 0, "port proxy listen")
flag.StringVar(&iIp, "iip", "127.0.0.1", "inner ip proxy connect to")
flag.UintVar(&iPort, "iport", 0, "inner port proxy connect to")
flag.Uint64Var(&limit, "limit", 0, "limit size per time window(in bytes)")
flag.UintVar(&window, "window", 0, "time window to check the limit(in seconds)")
flag.StringVar(&logFile, "l", "", "log file name")
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s -eport external_port -iport internal_port [-iip internal_ip] -limit limit_size -window time_window -l log_file\n", os.Args[0])
flag.PrintDefaults()
os.Exit(-1)
}
flag.Parse()
if ePort == 0 || iPort == 0 || logFile == "" || limit == 0 || window == 0 {
flag.Usage()
}
ip := net.ParseIP(iIp)
if ip == nil {
fmt.Fprintln(os.Stderr, "Invalid ip:", iIp)
flag.Usage()
}
err := logger.Init(logFile)
if err != nil {
fmt.Println("Init log file error:", err)
os.Exit(-1)
}
defer logger.Finalize()
// Handle signal
go signalHand()
t := tunnel.Tunnel{
EPort: ePort,
IIp: ip,
IPort: iPort,
Limit: limit,
Window: window,
CheckTime: time.Now(),
}
tunnel.Run(&t)
}