path: root/cmd/peerserver/main.go

/*
    This file is part of go-ethereum

    go-ethereum is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    go-ethereum is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
package main

import (
    "crypto/elliptic"
    "flag"
    "log"
    "os"

    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/logger"
    "github.com/ethereum/go-ethereum/p2p"
)

var (
    natType    = flag.String("nat", "", "NAT traversal implementation")
    pmpGateway = flag.String("gateway", "", "gateway address for NAT-PMP")
    listenAddr = flag.String("addr", ":30301", "listen address")
)

func main() {
    flag.Parse()
    nat, err := p2p.ParseNAT(*natType, *pmpGateway)
    if err != nil {
        log.Fatal("invalid nat:", err)
    }

    logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.InfoLevel))
    key, _ := crypto.GenerateKey()
    marshaled := elliptic.Marshal(crypto.S256(), key.PublicKey.X, key.PublicKey.Y)

    srv := p2p.Server{
        MaxPeers:   100,
        Identity:   p2p.NewSimpleClientIdentity("Ethereum(G)", "0.1", "Peer Server Two", marshaled),
        ListenAddr: *listenAddr,
        NAT:        nat,
        NoDial:     true,
    }
    if err := srv.Start(); err != nil {
        log.Fatal("could not start server:", err)
    }
    select {}
}