func main() {
var (
listenAddr = flag.String("addr", ":42787", "listen address")
genKey = flag.String("genkey", "", "generate a node key and quit")
nodeKeyFile = flag.String("nodekey", "", "private key filename")
nodeKeyHex = flag.String("nodekeyhex", "", "private key as hex (for testing)")
natdesc = flag.String("nat", "none", "port mapping mechanism (any|none|upnp|pmp|extip:<IP>)")
nodeKey *ecdsa.PrivateKey
err error
)
flag.Var(glog.GetVerbosity(), "verbosity", "log verbosity (0-9)")
flag.Var(glog.GetVModule(), "vmodule", "log verbosity pattern")
glog.SetToStderr(true)
flag.Parse()
if *genKey != "" {
key, err := crypto.GenerateKey()
if err != nil {
utils.Fatalf("could not generate key: %v", err)
}
if err := crypto.SaveECDSA(*genKey, key); err != nil {
utils.Fatalf("%v", err)
}
os.Exit(0)
}
natm, err := nat.Parse(*natdesc)
if err != nil {
utils.Fatalf("-nat: %v", err)
}
switch {
case *nodeKeyFile == "" && *nodeKeyHex == "":
utils.Fatalf("Use -nodekey or -nodekeyhex to specify a private key")
case *nodeKeyFile != "" && *nodeKeyHex != "":
utils.Fatalf("Options -nodekey and -nodekeyhex are mutually exclusive")
case *nodeKeyFile != "":
if nodeKey, err = crypto.LoadECDSA(*nodeKeyFile); err != nil {
utils.Fatalf("-nodekey: %v", err)
}
case *nodeKeyHex != "":
if nodeKey, err = crypto.HexToECDSA(*nodeKeyHex); err != nil {
utils.Fatalf("-nodekeyhex: %v", err)
}
}
if _, err := discover.ListenUDP(nodeKey, *listenAddr, natm, ""); err != nil {
utils.Fatalf("%v", err)
}
select {}
}
Usage: "Logging verbosity: 0-6 (0=silent, 1=error, 2=warn, 3=info, 4=core, 5=debug, 6=debug detail)",
Value: int(logger.InfoLevel),
}
LogJSONFlag = cli.StringFlag{
Name: "logjson",
Usage: "Send json structured log output to a file or '-' for standard output (default: no json output)",
Value: "",
}
LogToStdErrFlag = cli.BoolFlag{
Name: "logtostderr",
Usage: "Logs are written to standard error instead of to files.",
}
LogVModuleFlag = cli.GenericFlag{
Name: "vmodule",
Usage: "The syntax of the argument is a comma-separated list of pattern=N, where pattern is a literal file name (minus the \".go\" suffix) or \"glob\" pattern and N is a log verbosity level.",
Value: glog.GetVModule(),
}
BacktraceAtFlag = cli.GenericFlag{
Name: "backtrace_at",
Usage: "If set to a file and line number (e.g., \"block.go:271\") holding a logging statement, a stack trace will be logged",
Value: glog.GetTraceLocation(),
}
PProfEanbledFlag = cli.BoolFlag{
Name: "pprof",
Usage: "Enable the profiling server on localhost",
}
PProfPortFlag = cli.IntFlag{
Name: "pprofport",
Usage: "Port on which the profiler should listen",
Value: 6060,
}