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main.go
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main.go
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// Copyright 2018 Blockchain-CN . All rights reserved.
// https://github.com/Blockchain-CN
package main
import (
"errors"
"fmt"
"os"
"net"
"github.com/Blockchain-CN/blockchain/common"
pto "github.com/Blockchain-CN/blockchain/protocal"
"github.com/Blockchain-CN/blockchain/server"
"flag"
)
func main() {
var (
ServerPort string
P2PPort string
)
flag.StringVar(&ServerPort, "server", "", "-server=:10024")
flag.StringVar(&P2PPort, "p2p", "", "-p2p=:12345")
flag.Parse()
if ServerPort == "" || P2PPort == "" {
useage()
printAndDie(errors.New("Unable to get a avilable port for p2p node"))
}
ip := getIP()
if ip == "" {
printAndDie(errors.New("Unable to get a avilable ip"))
}
// ip = "127.0.0.1"
// init protocal
pto.InitPto(ip+P2PPort, common.P2PTimeOut)
// call this func will block current goroutine
if err := server.Serve(ip+ServerPort); err != nil {
printAndDie(err)
return
}
}
func getIP() string {
addrs, err := net.InterfaceAddrs()
if err != nil {
return ""
}
for _, address := range addrs {
// 检查ip地址判断是否回环地址
if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
return ipnet.IP.String()
}
}
}
return ""
}
func printAndDie(err error) {
fmt.Fprintf(os.Stderr, "init failed, err:%s", err)
os.Exit(-1)
}
func useage() {
fmt.Fprintf(os.Stdout, "please run \"%s --help\" and get help info\n", os.Args[0])
os.Exit(-1)
}