51 lines
941 B
Go
51 lines
941 B
Go
package main
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import (
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"flag"
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"log"
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"net"
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"os"
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"bitbucket.org/anacrolix/go.torrent/dht"
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)
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type pingResponse struct {
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addr string
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krpc dht.Msg
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}
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func main() {
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log.SetFlags(log.LstdFlags | log.Lshortfile)
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flag.Parse()
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pingStrAddrs := flag.Args()
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if len(pingStrAddrs) == 0 {
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os.Stderr.WriteString("u must specify addrs of nodes to ping e.g. router.bittorrent.com:6881\n")
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os.Exit(2)
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}
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s, err := dht.NewServer(nil)
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if err != nil {
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log.Fatal(err)
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}
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log.Printf("dht server on %s", s.LocalAddr())
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pingResponses := make(chan pingResponse)
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for _, netloc := range pingStrAddrs {
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addr, err := net.ResolveUDPAddr("udp4", netloc)
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if err != nil {
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log.Fatal(err)
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}
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t, err := s.Ping(addr)
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if err != nil {
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log.Fatal(err)
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}
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go func(addr string) {
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pingResponses <- pingResponse{
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addr: addr,
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krpc: <-t.Response,
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}
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}(netloc)
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}
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for _ = range pingStrAddrs {
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log.Printf("%q", <-pingResponses)
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}
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}
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