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main.go
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main.go
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package main
import (
"bufio"
"flag"
"math/rand"
"os"
"sync/atomic"
"time"
"github.com/cynthiatong/noise/broadcast"
"github.com/cynthiatong/noise/log"
"github.com/cynthiatong/noise/network"
"github.com/cynthiatong/noise/protocol"
kad "github.com/cynthiatong/noise/skademlia"
)
var (
ip = "127.0.0.1"
bsAddr = []string{"127.0.0.1:8000"}
numPeers = 30
numBsPeers = 16
peerFile = "peers.txt"
)
func randID(ids []kad.ID) kad.ID {
n := rand.Int() % len(ids)
return ids[n]
}
func minInt(a int, b int) int {
if a < b {
return a
}
return b
}
func randBsAddrs(ids []kad.ID) []string {
n := minInt(len(ids), numBsPeers)
bsAddrs := make([]string, n)
for i := 0; i < n; i++ {
bsAddrs[i] = randID(ids).Address()
}
return bsAddrs
}
func main() {
portFlag := flag.Uint("p", 8000, "")
flag.Parse()
rand.Seed(time.Now().Unix())
reader := bufio.NewReader(os.Stdin)
if *portFlag == 4000 {
peers := kad.LoadIDs(peerFile)
node, _, _ := network.InitNetwork(ip, *portFlag, randBsAddrs(peers), true, true)
for {
input, err := reader.ReadString('\n')
if err != nil {
panic(err)
}
broadcast.SendMessage(node, protocol.NodeID(node).(kad.ID), []byte(input), 0, kad.Table(node).GetNumOfBuckets()-1)
}
} else {
peers := []kad.ID{}
rcvCount := uint32(0)
for i := 0; i < numPeers; i++ {
node, _, bCh := network.InitNetwork(ip, *portFlag, randBsAddrs(peers), true, true)
go func() {
for {
select {
case msg := <-bCh:
atomic.AddUint32(&rcvCount, 1)
log.Info().Msgf("msg %s rcv count %d", msg.Data, atomic.LoadUint32(&rcvCount))
}
}
}()
*portFlag++
peers = append(peers, protocol.NodeID(node).(kad.ID))
}
kad.PersistIDs(peerFile, peers)
select {}
}
}