func ApiStruct2Peer(p *gobgpapi.Peer) *Peer {
localCaps := capabilities{}
remoteCaps := capabilities{}
for _, buf := range p.Conf.LocalCap {
c, _ := bgp.DecodeCapability(buf)
localCaps = append(localCaps, c)
}
for _, buf := range p.Conf.RemoteCap {
c, _ := bgp.DecodeCapability(buf)
remoteCaps = append(remoteCaps, c)
}
remoteIp, _ := net.ResolveIPAddr("ip", p.Conf.NeighborAddress)
localIp, _ := net.ResolveIPAddr("ip", p.Conf.LocalAddress)
conf := PeerConf{
RemoteIp: remoteIp.String(),
Id: net.ParseIP(p.Conf.Id),
RemoteAs: p.Conf.PeerAs,
LocalAs: p.Conf.LocalAs,
RemoteCap: remoteCaps,
LocalCap: localCaps,
PrefixLimits: p.Conf.PrefixLimits,
LocalIp: localIp.String(),
Interface: p.Conf.NeighborInterface,
}
return &Peer{
Conf: conf,
Info: p.Info,
Timers: p.Timers,
RouteReflector: p.RouteReflector,
RouteServer: p.RouteServer,
}
}
func matchSubnet(patterns []string, addresses ...string) (bool, bool, error) {
oneValidPattern := false
for _, p := range patterns {
for _, a := range addresses {
ip, err := net.ResolveIPAddr("ip", a)
if err != nil {
errors.Trace(errors.Annotate(err, "could not parse machine's address"))
continue
} else if pip, err := net.ResolveIPAddr("ip", p); err == nil {
oneValidPattern = true
if ip.IP.Equal(pip.IP) {
return true, true, nil
}
} else if pip := net.ParseIP(p); pip != nil {
oneValidPattern = true
if ip.IP.Equal(pip) {
return true, true, nil
}
} else if _, ipNet, err := net.ParseCIDR(p); err == nil {
oneValidPattern = true
if ipNet.Contains(ip.IP) {
return true, true, nil
}
}
}
}
return false, oneValidPattern, nil
}
func initSessions() {
recvAddr, _ := net.ResolveIPAddr("ip", "127.0.0.1")
senderAddr, _ = net.ResolveIPAddr("ip", "127.0.0.2")
// Create a UDP transport with "local" address and use this for a "local" RTP session
// Not used in these tests, used to initialize and get a Session
tpRecv, _ := NewTransportUDP(recvAddr, recvPort, localZone)
// TransportUDP implements RtpTransportWrite and RtpTransportRecv interfaces thus
// set it in the RtpSession for both interfaces
rsRecv = NewSession(tpRecv, tpRecv)
// Create and store the data receive channel.
dataReceiver = rsRecv.CreateDataReceiveChan()
// Create a media stream.
// The SSRC identifies the stream. Each stream has its own sequence number and other
// context. A RTP session can have several RTP stream for example to send several
// streams of the same media. Need an output stream to test for collisions/loops
//
strIdx, _ := rsRecv.NewSsrcStreamOut(&Address{recvAddr.IP, recvPort, recvPort + 1, localZone}, 0x01020304, 0x4711)
rsRecv.SsrcStreamOutForIndex(strIdx).SetSdesItem(SdesCname, "AAAAAA")
rsRecv.SsrcStreamOutForIndex(strIdx).SetPayloadType(0)
rsRecv.rtcpServiceActive = true // to simulate an active RTCP service
tpSender, _ := NewTransportUDP(senderAddr, senderPort, remoteZone)
rsSender = NewSession(tpSender, tpSender)
}
func TestSet(t *testing.T) {
t.Parallel()
hCopy := sample(t)
one0, err := net.ResolveIPAddr("ip", "10.0.0.1")
ok(t, err)
hCopy.Set(*one0, "tendot")
equals(t, len(hCopy.records), 4)
equals(t, hCopy.records[3].Hostnames["tendot"], true)
equals(t, hCopy.records[3].IpAddress.String(), "10.0.0.1")
// appending same element shouldn't change anything
hCopy.Set(*one0, "tendot")
equals(t, len(hCopy.records), 4)
one92, err := net.ResolveIPAddr("ip", "192.168.3.7")
ok(t, err)
hCopy.Set(*one92, "tendot")
equals(t, hCopy.records[3].IpAddress.String(), "192.168.3.7")
ip6, err := net.ResolveIPAddr("ip", "::1")
ok(t, err)
hCopy.Set(*ip6, "tendot")
equals(t, len(hCopy.records), 5)
equals(t, hCopy.records[4].IpAddress.String(), "::1")
}
func Ping(hostName string, id uint16, sequence uint16, payload []byte) os.Error {
localAddr, e := net.ResolveIPAddr("0.0.0.0")
if e != nil {
fmt.Printf("%s\n", e)
return e
}
remoteAddr, e := net.ResolveIPAddr(hostName)
if e != nil {
fmt.Printf("%s\n", e)
return e
}
cl, e := NewPingClient(localAddr)
if e != nil {
fmt.Printf("%s\n", e)
return e
}
cl.SendEchoRequest(remoteAddr, id, sequence, payload)
cl.Close()
return nil
}
func (s *store) filterAddr(addrs []string, filter string) ([]string, error) {
host, port, err := net.SplitHostPort(filter)
if err != nil {
return nil, err
}
ip, err := net.ResolveIPAddr("ip", host)
if err != nil {
return nil, err
}
var joinPeers []string
for _, addr := range addrs {
joinHost, joinPort, err := net.SplitHostPort(addr)
if err != nil {
return nil, err
}
joinIp, err := net.ResolveIPAddr("ip", joinHost)
if err != nil {
return nil, err
}
// Don't allow joining ourselves
if ip.String() == joinIp.String() && port == joinPort {
continue
}
joinPeers = append(joinPeers, addr)
}
return joinPeers, nil
}
func TestProtocols(t *testing.T) {
t.Parallel()
one92, _ := net.ResolveIPAddr("ip", "192.168.3.7")
ip6, _ := net.ResolveIPAddr("ip", "::1")
equals(t, matchProtocols(one92.IP, ip6.IP), false)
equals(t, matchProtocols(one92.IP, one92.IP), true)
equals(t, matchProtocols(ip6.IP, ip6.IP), true)
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
bcastIP := "127.0.0.1"
flag.Parse()
if myID == -1 || nGroup == -1 {
log.Panic("usage")
}
log.Printf("upaxos id(%d) started in group of %d", myID, nGroup)
defer log.Printf("upaxos id(%d) ending", myID)
lfr, lfw := logfile(myID)
promises, accepts, learnings := loadLogData(lfr)
lfw.Printf("starting %d", myID)
// begin listening on my well known address
la, err := net.ResolveIPAddr("ip4", bcastIP)
if err != nil {
log.Panic(err)
}
conn, err := net.ListenIP(groupIPProto, la)
if err != nil {
log.Panic(err)
}
sendDest, err = net.ResolveIPAddr("ip4", bcastIP)
if err != nil {
log.Panic(err)
}
leadc := make(chan Msg)
acceptc := make(chan Msg)
learnc := make(chan Msg)
mainc := make(chan Msg)
receivers = []chan Msg{leadc, acceptc, learnc, mainc}
go lead(leadc)
go accept(acceptc, lfw, promises, accepts)
go learn(learnc, lfw, learnings)
go listen(conn)
loop:
for m := range mainc {
if len(m.f) > 0 {
switch m.f[0] {
case "quit":
fallthrough
case "exit":
fallthrough
case "bye":
log.Print("exiting")
break loop
}
}
}
}
func dialTCP(target string, w http.ResponseWriter, module Module) (net.Conn, error) {
var dialProtocol, fallbackProtocol string
dialer := &net.Dialer{Timeout: module.Timeout}
if module.TCP.Protocol == "" {
module.TCP.Protocol = "tcp"
}
if module.TCP.Protocol == "tcp" && module.TCP.PreferredIpProtocol == "" {
module.TCP.PreferredIpProtocol = "ip6"
}
if module.TCP.PreferredIpProtocol == "ip6" {
fallbackProtocol = "ip4"
} else {
fallbackProtocol = "ip6"
}
dialProtocol = module.TCP.Protocol
if module.TCP.Protocol == "tcp" {
target_address, _, err := net.SplitHostPort(target)
ip, err := net.ResolveIPAddr(module.TCP.PreferredIpProtocol, target_address)
if err != nil {
ip, err = net.ResolveIPAddr(fallbackProtocol, target_address)
if err != nil {
return nil, err
}
}
if ip.IP.To4() == nil {
dialProtocol = "tcp6"
} else {
dialProtocol = "tcp4"
}
}
if dialProtocol == "tcp6" {
fmt.Fprintf(w, "probe_ip_protocol 6\n")
} else {
fmt.Fprintf(w, "probe_ip_protocol 4\n")
}
if !module.TCP.TLS {
return dialer.Dial(dialProtocol, target)
}
config, err := module.TCP.TLSConfig.GenerateConfig()
if err != nil {
return nil, err
}
return tls.DialWithDialer(dialer, dialProtocol, target, config)
}
func (i *siNetIFInfo) UnmarshalJSON(data []byte) (err error) {
var tmp struct {
Metric int `json:"metric"`
MTU int `json:"mtu"`
Flags int `json:"flags"`
Type string `json:"type"`
Name string `json:"name"`
Broadcast string `json:"broadcast"`
Address string `json:"address"`
Address6 string `json:"address6"`
HWAddr string `json:"hwaddr"`
Destination string `json:"destination"`
Netmask string `json:"netmask"`
}
err = json.Unmarshal(data, &tmp)
if err != nil {
return
}
i.Metric = tmp.Metric
i.MTU = tmp.MTU
i.Flags = tmp.Flags
i.Type = tmp.Type
i.Name = tmp.Name
i.Broadcast, err = net.ResolveIPAddr("ip", tmp.Broadcast)
if err != nil {
return
}
i.Address, err = net.ResolveIPAddr("ip", tmp.Address)
if err != nil {
return
}
i.Address6, err = net.ResolveIPAddr("ip", tmp.Address6)
if err != nil {
return
}
i.HWAddr, err = net.ParseMAC(tmp.HWAddr)
if err != nil {
return
}
i.Destination, err = net.ResolveIPAddr("ip", tmp.Destination)
if err != nil {
return
}
i.Netmask = net.IPMask(net.ParseIP(tmp.Netmask))
return
}
func udpAddrFromString(addr string) *net.UDPAddr {
host, portStr, err := net.SplitHostPort(addr)
if err != nil {
log.Fatal("Bad StatsD listening address", addr)
}
if host == "" {
host = "0.0.0.0"
}
ip, err := net.ResolveIPAddr("ip", host)
if err != nil {
log.Fatalf("Unable to resolve %s: %s", host, err)
}
port, err := strconv.Atoi(portStr)
if err != nil || port < 0 || port > 65535 {
log.Fatalf("Bad port %s: %s", portStr, err)
}
return &net.UDPAddr{
IP: ip.IP,
Port: port,
Zone: ip.Zone,
}
}
func (resolver *addressResolver) ResolveIP(host string) (net.IP, error) {
if host == "localhost" || host == "127.0.0.1" {
if resolver.local != nil {
return resolver.local, nil
}
if !resolver.checked {
resolver.checked = true
devices, err := net.Interfaces()
if err != nil {
return nil, err
}
for _, dev := range devices {
if (dev.Flags&net.FlagUp != 0) && (dev.Flags&net.FlagLoopback == 0) {
addrs, err := dev.Addrs()
if err != nil {
continue
}
for i := range addrs {
if ip, ok := addrs[i].(*net.IPNet); ok {
log.Printf("Using %v for %s", ip, host)
resolver.local = ip.IP
return resolver.local, nil
}
}
}
}
}
}
addr, err := net.ResolveIPAddr("ip", host)
if err != nil {
return nil, err
}
return addr.IP, nil
}
func receiveSynAck(localAddress, remoteAddress string) time.Time {
netaddr, err := net.ResolveIPAddr("ip4", localAddress)
if err != nil {
log.Fatalf("net.ResolveIPAddr: %s. %s\n", localAddress, netaddr)
}
conn, err := net.ListenIP("ip4:tcp", netaddr)
if err != nil {
log.Fatalf("ListenIP: %s\n", err)
}
var receiveTime time.Time
for {
buf := make([]byte, 1024)
numRead, raddr, err := conn.ReadFrom(buf)
if err != nil {
log.Fatalf("ReadFrom: %s\n", err)
}
if raddr.String() != remoteAddress {
// this is not the packet we are looking for
continue
}
receiveTime = time.Now()
//fmt.Printf("Received: % x\n", buf[:numRead])
tcp := NewTCPHeader(buf[:numRead])
// Closed port gets RST, open port gets SYN ACK
if tcp.HasFlag(RST) || (tcp.HasFlag(SYN) && tcp.HasFlag(ACK)) {
break
}
}
return receiveTime
}
// NewPingChecker returns a check function that can check if a host answer to a ICMP Ping
func NewPingChecker(host, service, ip string) CheckFunction {
return func() Event {
var retRtt time.Duration
var result = Event{Host: host, Service: service, State: "critical"}
p := fastping.NewPinger()
p.MaxRTT = maxPingTime
ra, err := net.ResolveIPAddr("ip4:icmp", ip)
if err != nil {
result.Description = err.Error()
}
p.AddIPAddr(ra)
p.OnRecv = func(addr *net.IPAddr, rtt time.Duration) {
result.State = "ok"
result.Metric = float32(retRtt.Nanoseconds() / 1e6)
}
err = p.Run()
if err != nil {
result.Description = err.Error()
}
return result
}
}
func Ping(timeout int) {
log.SetPrefix("[Ping] ")
scanner := bufio.NewScanner(os.Stdin)
ips := make([]string, 0)
var input string
// single ip
for scanner.Scan() {
input = scanner.Text()
_, err := net.ResolveIPAddr("ip", input)
if err != nil {
break
} else {
ips = append(ips, input)
}
}
// whole lan
if strings.Contains(input, "/") {
lastDotIdx := strings.LastIndex(input, ".")
ipPre := input[:lastDotIdx+1]
for i := 0; i < 256; i++ {
ip := ipPre + strconv.Itoa(i)
ips = append(ips, ip)
}
}
runFastPing(ips, "", timeout)
runFastPing(ips, "127.0.0.1", timeout)
}
func Resolve(name string) (net.IP, error) {
addr, err := net.ResolveIPAddr("ip", name)
if err != nil {
return nil, err
}
return addr.IP, err
}
func (d DNSResolver) Resolve(ctx context.Context, name string) (context.Context, net.IP, error) {
addr, err := net.ResolveIPAddr("ip", name)
if err != nil {
return ctx, nil, err
}
return ctx, addr.IP, err
}
func dial(spec string) (*net.TCPConn, error) {
host, port, err := net.SplitHostPort(spec)
if err != nil {
log.Infof("dial(): ERR: could not extract host and port from spec %v: %v", spec, err)
return nil, err
}
remoteAddr, err := net.ResolveIPAddr("ip", host)
if err != nil {
log.Infof("dial(): ERR: could not resolve %v: %v", host, err)
return nil, err
}
portInt, err := strconv.Atoi(port)
if err != nil {
log.Infof("dial(): ERR: could not convert network port from string \"%s\" to integer: %v", port, err)
return nil, err
}
remoteAddrAndPort := &net.TCPAddr{IP: remoteAddr.IP, Port: portInt}
var localAddr *net.TCPAddr
localAddr = nil
conn, err := net.DialTCP("tcp", localAddr, remoteAddrAndPort)
if err != nil {
log.Infof("dial(): ERR: could not connect to %v:%v: %v", remoteAddrAndPort.IP, remoteAddrAndPort.Port, err)
}
return conn, err
}
// 一个接口上的所有ip4地址
func addrsOfOneInterface(iface net.Interface) (addrs []*net.IPAddr) {
ifaddrs, err := iface.Addrs()
if (err != nil) || (len(ifaddrs) == 0) {
return
}
for _, ifaddr := range ifaddrs {
var ip net.IP
switch v := ifaddr.(type) {
case *net.IPNet:
ip = v.IP
case *net.IPAddr:
ip = v.IP
default:
continue
}
if ip.IsLoopback() {
return
}
ip = ip.To4()
if ip != nil {
addr, _ := net.ResolveIPAddr("ip", ip.String())
addrs = append(addrs, addr)
}
}
return
}
func parseRestrictAddr(relativeTo *net.TCPAddr) error {
if userRestrictAddr == "" {
return nil
}
realNet := "ip"
switch len(relativeTo.IP) {
default:
// Someone's invented IPv8. Just hope for the best; if we get an address that doesn't match
// the listening family at all, then no connections will be accepted.
case net.IPv4len:
realNet = "ip4"
case net.IPv6len:
// Sometimes net.IP stores IPv4 addresses in 16-byte slices too. Sigh.
if bytes.HasPrefix(relativeTo.IP, ipv4MappedPrefix) {
realNet = "ip4"
} else {
realNet = "ip6"
}
}
// This does not propagate IPv6 scopes; the user must specify the same scope explicitly both times
// if needed.
ip, err := net.ResolveIPAddr(realNet, userRestrictAddr)
if err != nil {
return err
}
log.Info("restricting to connections from %v", ip)
restrictIP = ip
return nil
}
func main() {
var m = flag.Int("m", traceroute.DEFAULT_MAX_HOPS, `Set the max time-to-live (max number of hops) used in outgoing probe packets (default is 64)`)
var q = flag.Int("q", 1, `Set the number of probes per "ttl" to nqueries (default is one probe).`)
flag.Parse()
host := flag.Arg(0)
options := traceroute.TracerouteOptions{}
options.SetRetries(*q - 1)
options.SetMaxHops(*m + 1)
ipAddr, err := net.ResolveIPAddr("ip", host)
if err != nil {
return
}
fmt.Printf("traceroute to %v (%v), %v hops max, %v byte packets\n", host, ipAddr, options.MaxHops(), options.PacketSize())
c := make(chan traceroute.TracerouteHop, 0)
go func() {
for {
hop, ok := <-c
if !ok {
fmt.Println()
return
}
printHop(hop)
}
}()
_, err = traceroute.Traceroute(host, &options, c)
if err != nil {
fmt.Printf("Error: ", err)
}
}
func handlerResolve(w http.ResponseWriter, r *http.Request) {
lp, err := Localhost()
if err != nil {
panic(err)
}
ips := lp.String()
fmt.Println("ip:", ips) // 127.0.0.1
netaddr, err := net.ResolveIPAddr("ip4", ips)
if err != nil {
panic(err)
}
fmt.Println("netaddr:", netaddr.String()) // 127.0.0.1
conn, err := net.ListenIP("ip4:icmp", netaddr)
if err != nil {
panic(err)
}
buf := make([]byte, 1024)
num, _, _ := conn.ReadFrom(buf)
// build and ping localhost with sudo
fmt.Printf("ReadPacket: %X\n", buf[:num])
// ReadPacket: 0800FD6729...
}
func Post(w rest.ResponseWriter, r *rest.Request) {
host := Host{}
err := r.DecodeJsonPayload(&host)
if err != nil {
rest.Error(w, err.Error(), http.StatusInternalServerError)
return
}
if host.Id == "" {
rest.Error(w, "id required", 400)
return
}
if host.Address == "" {
rest.Error(w, "address required", 400)
return
}
ra, err := net.ResolveIPAddr("ip4:icmp", host.Address)
if err != nil {
rest.Error(w, err.Error(), 400)
return
}
lock.Lock()
q := make(chan bool, 1) // chan for stop ping
store[host.Id] = &HostStore{
host,
time.Now(),
0.0, 0.0, 0.0, 0.0,
0,
ring.New(DefCircleLen),
q}
go ping(host.Id, ra, time.Second*DefRTT, q, &lock, store)
lock.Unlock()
w.WriteJson(&host)
}
func main() {
flag.Parse()
if ipAddr == "(none)" || ipProto == -1 {
log.Panic("usage")
}
ra, err := net.ResolveIPAddr("ip4", ipAddr)
if err != nil {
log.Panic(err)
}
proto := fmt.Sprintf("ip:%d", ipProto)
conn, err := net.DialIP(proto, nil, ra)
if err != nil {
log.Panic(err)
}
defer conn.Close()
in := bufio.NewReader(os.Stdin)
line, err := in.ReadSlice('\n')
for err == nil {
_, err = conn.Write([]byte(line))
if err != nil {
log.Panic(err)
}
line, err = in.ReadSlice('\n')
}
}
func newDialerAddr(network, addr string) net.Addr {
netaddr, err := net.ResolveIPAddr(network, addr)
if err == nil {
return netaddr
}
return fallbackAddr{network, addr}
}
// ListenEcho from routers in path
func ListenEcho(addresses chan string) {
localAddress, err := net.ResolveIPAddr(ICMP, LocalAddress)
Check(err)
c, err := net.ListenIP(ICMP, localAddress)
Check(err)
c.SetReadDeadline(time.Now().Add(time.Second * Deadline))
defer c.Close()
for {
buffer := make([]byte, BufferSize)
bytesRead, remoteAddress, err := c.ReadFromIP(buffer)
if e, ok := err.(net.Error); ok && e.Timeout() {
// if err were a timeout we don't raise panic
c.SetReadDeadline(time.Now().Add(time.Second * Deadline))
addresses <- ""
continue
} else {
Check(err)
}
if bytesRead > 0 {
addresses <- remoteAddress.String()
}
}
}
func GetRegion(server string) (string, string) {
if config.Constants.GeoIP == "" {
return "", ""
}
arr := strings.Split(server, ":")
addr, err := net.ResolveIPAddr("ip4", arr[0])
if err != nil {
helpers.Logger.Error(err.Error())
return "", ""
}
record, err := geodb.Country(addr.IP)
if err != nil {
helpers.Logger.Error(err.Error())
return "", ""
}
if record.Country.Names["en"] == "Russia" {
return "ru", "Russia"
}
return strings.ToLower(record.Continent.Code), record.Continent.Names["en"]
}
func NewRtpClient(listenIP string, listenPort int) (*RtpClient, error) {
localAddr, err := net.ResolveIPAddr("ip", listenIP)
if err != nil {
return nil, err
}
rtpTransport, err := rtp.NewTransportUDP(localAddr, listenPort)
if err != nil {
return nil, err
}
session := rtp.NewSession(rtpTransport, rtpTransport)
err = session.StartSession()
if err != nil {
return nil, err
}
client := &RtpClient{
listenPort: listenPort,
ReceiveStats: stats.NewStats("RTP received"),
MissedStats: stats.NewStats("RTP missed"),
CtrlStats: stats.NewStats("RTCP events"),
RtpSession: session,
ctrlChan: session.CreateCtrlEventChan(rtpCtrlBuffer),
dataChan: session.CreateDataReceiveChan(rtpDataBuffer),
stopped: golib.NewOneshotCondition(),
}
client.wg.Add(1)
go client.handleCtrlEvents()
client.wg.Add(1)
go client.handleDataPackets()
return client, nil
}
// Resolve given hostname/address in the given address family
func resolveName(dest string, af string) (net.IP, error) {
addr, err := net.ResolveIPAddr(af, dest)
if err != nil {
return nil, err
}
return addr.IP, nil
}
// Pinguntil will send ICMP echo packets to the destination until the counter is reached, or forever if the counter is set to 0.
// The replies are given in the Response format.
// You can also adjust the delay between two ICMP echo packets with the variable delay.
func Pinguntil(destination string, count int, response chan Response, delay time.Duration) {
raddr, err := net.ResolveIPAddr("ip", destination)
if err != nil {
response <- Response{Delay: 0, Error: err, Destination: destination, Seq: 0}
close(response)
return
}
ipconn, err := net.Dial("ip:icmp", raddr.IP.String())
if err != nil {
response <- Response{Delay: 0, Error: err, Destination: raddr.IP.String(), Seq: 0}
close(response)
return
}
sendid := os.Getpid() & 0xffff
pingpktlen := 64
seq := 0
var elapsed time.Duration = 0
for ; seq < count || count == 0; seq++ {
elapsed = 0
if seq > 65535 { // The two bytes for seq. Don't overflow!
seq = 0
}
sendpkt := makePingRequest(sendid, seq, pingpktlen, []byte("Go Ping"))
start := time.Now()
writesize, err := ipconn.Write(sendpkt)
if err != nil || writesize != pingpktlen {
response <- Response{Delay: 0, Error: err, Destination: raddr.IP.String(), Seq: seq, Writesize: writesize, Readsize: 0}
time.Sleep(delay)
continue
}
ipconn.SetReadDeadline(time.Now().Add(time.Second * 1)) // 1 second
resp := make([]byte, 1024)
for {
readsize, err := ipconn.Read(resp)
elapsed = time.Now().Sub(start)
rid, rseq, rcode := parsePingReply(resp)
if err != nil {
response <- Response{Delay: 0, Error: err, Destination: raddr.IP.String(), Seq: seq, Writesize: writesize, Readsize: readsize}
break
} else if rcode != ICMP_ECHO_REPLY || rseq != seq || rid != sendid {
continue
} else {
response <- Response{Delay: elapsed, Error: err, Destination: raddr.IP.String(), Seq: seq, Writesize: writesize, Readsize: readsize}
break
}
}
time.Sleep(delay - elapsed)
}
close(response)
}