cord-776 create build / runtime containers for autmation uservices
Change-Id: I246973192adef56a250ffe93a5f65fff488840c1
diff --git a/harvester/vendor/github.com/tatsushid/go-fastping/LICENSE b/harvester/vendor/github.com/tatsushid/go-fastping/LICENSE
new file mode 100644
index 0000000..abb8dee
--- /dev/null
+++ b/harvester/vendor/github.com/tatsushid/go-fastping/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Tatsushi Demachi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/harvester/vendor/github.com/tatsushid/go-fastping/README.md b/harvester/vendor/github.com/tatsushid/go-fastping/README.md
new file mode 100644
index 0000000..d77a261
--- /dev/null
+++ b/harvester/vendor/github.com/tatsushid/go-fastping/README.md
@@ -0,0 +1,54 @@
+go-fastping
+===========
+
+go-fastping is a Go language ICMP ping library, inspired by the `AnyEvent::FastPing`
+Perl module, for quickly sending ICMP ECHO REQUEST packets. Original Perl module
+is available at http://search.cpan.org/~mlehmann/AnyEvent-FastPing-2.01/
+
+All original functions haven't been implemented yet.
+
+[](https://godoc.org/github.com/tatsushid/go-fastping)
+
+## Installation
+
+Install and update with `go get -u github.com/tatsushid/go-fastping`
+
+## Examples
+
+Import this package and write
+
+```go
+p := fastping.NewPinger()
+ra, err := net.ResolveIPAddr("ip4:icmp", os.Args[1])
+if err != nil {
+ fmt.Println(err)
+ os.Exit(1)
+}
+p.AddIPAddr(ra)
+p.OnRecv = func(addr *net.IPAddr, rtt time.Duration) {
+ fmt.Printf("IP Addr: %s receive, RTT: %v\n", addr.String(), rtt)
+}
+p.OnIdle = func() {
+ fmt.Println("finish")
+}
+err = p.Run()
+if err != nil {
+ fmt.Println(err)
+}
+```
+
+The example sends an ICMP packet and waits for a response. If it receives a
+response, it calls the "receive" callback. After that, once MaxRTT time has
+passed, it calls the "idle" callback. For more details,
+refer [to the godoc][godoc], and if you need more examples,
+please see "cmd/ping/ping.go".
+
+## Caution
+This package implements ICMP ping using both raw socket and UDP. If your program
+uses this package in raw socket mode, it needs to be run as a root user.
+
+## License
+go-fastping is under MIT License. See the [LICENSE][license] file for details.
+
+[godoc]: http://godoc.org/github.com/tatsushid/go-fastping
+[license]: https://github.com/tatsushid/go-fastping/blob/master/LICENSE
diff --git a/harvester/vendor/github.com/tatsushid/go-fastping/fastping.go b/harvester/vendor/github.com/tatsushid/go-fastping/fastping.go
new file mode 100644
index 0000000..96950ca
--- /dev/null
+++ b/harvester/vendor/github.com/tatsushid/go-fastping/fastping.go
@@ -0,0 +1,685 @@
+// Package fastping is an ICMP ping library inspired by AnyEvent::FastPing Perl
+// module to send ICMP ECHO REQUEST packets quickly. Original Perl module is
+// available at
+// http://search.cpan.org/~mlehmann/AnyEvent-FastPing-2.01/
+//
+// It hasn't been fully implemented original functions yet.
+//
+// Here is an example:
+//
+// p := fastping.NewPinger()
+// ra, err := net.ResolveIPAddr("ip4:icmp", os.Args[1])
+// if err != nil {
+// fmt.Println(err)
+// os.Exit(1)
+// }
+// p.AddIPAddr(ra)
+// p.OnRecv = func(addr *net.IPAddr, rtt time.Duration) {
+// fmt.Printf("IP Addr: %s receive, RTT: %v\n", addr.String(), rtt)
+// }
+// p.OnIdle = func() {
+// fmt.Println("finish")
+// }
+// err = p.Run()
+// if err != nil {
+// fmt.Println(err)
+// }
+//
+// It sends an ICMP packet and wait a response. If it receives a response,
+// it calls "receive" callback. After that, MaxRTT time passed, it calls
+// "idle" callback. If you need more example, please see "cmd/ping/ping.go".
+//
+// This library needs to run as a superuser for sending ICMP packets when
+// privileged raw ICMP endpoints is used so in such a case, to run go test
+// for the package, please run like a following
+//
+// sudo go test
+//
+package fastping
+
+import (
+ "errors"
+ "fmt"
+ "log"
+ "math/rand"
+ "net"
+ "sync"
+ "syscall"
+ "time"
+
+ "golang.org/x/net/icmp"
+ "golang.org/x/net/ipv4"
+ "golang.org/x/net/ipv6"
+)
+
+const (
+ TimeSliceLength = 8
+ ProtocolICMP = 1
+ ProtocolIPv6ICMP = 58
+)
+
+var (
+ ipv4Proto = map[string]string{"ip": "ip4:icmp", "udp": "udp4"}
+ ipv6Proto = map[string]string{"ip": "ip6:ipv6-icmp", "udp": "udp6"}
+)
+
+func byteSliceOfSize(n int) []byte {
+ b := make([]byte, n)
+ for i := 0; i < len(b); i++ {
+ b[i] = 1
+ }
+
+ return b
+}
+
+func timeToBytes(t time.Time) []byte {
+ nsec := t.UnixNano()
+ b := make([]byte, 8)
+ for i := uint8(0); i < 8; i++ {
+ b[i] = byte((nsec >> ((7 - i) * 8)) & 0xff)
+ }
+ return b
+}
+
+func bytesToTime(b []byte) time.Time {
+ var nsec int64
+ for i := uint8(0); i < 8; i++ {
+ nsec += int64(b[i]) << ((7 - i) * 8)
+ }
+ return time.Unix(nsec/1000000000, nsec%1000000000)
+}
+
+func isIPv4(ip net.IP) bool {
+ return len(ip.To4()) == net.IPv4len
+}
+
+func isIPv6(ip net.IP) bool {
+ return len(ip) == net.IPv6len
+}
+
+func ipv4Payload(b []byte) []byte {
+ if len(b) < ipv4.HeaderLen {
+ return b
+ }
+ hdrlen := int(b[0]&0x0f) << 2
+ return b[hdrlen:]
+}
+
+type packet struct {
+ bytes []byte
+ addr net.Addr
+}
+
+type context struct {
+ stop chan bool
+ done chan bool
+ err error
+}
+
+func newContext() *context {
+ return &context{
+ stop: make(chan bool),
+ done: make(chan bool),
+ }
+}
+
+// Pinger represents ICMP packet sender/receiver
+type Pinger struct {
+ id int
+ seq int
+ // key string is IPAddr.String()
+ addrs map[string]*net.IPAddr
+ network string
+ source string
+ source6 string
+ hasIPv4 bool
+ hasIPv6 bool
+ ctx *context
+ mu sync.Mutex
+
+ // Size in bytes of the payload to send
+ Size int
+ // Number of (nano,milli)seconds of an idle timeout. Once it passed,
+ // the library calls an idle callback function. It is also used for an
+ // interval time of RunLoop() method
+ MaxRTT time.Duration
+ // OnRecv is called with a response packet's source address and its
+ // elapsed time when Pinger receives a response packet.
+ OnRecv func(*net.IPAddr, time.Duration)
+ // OnIdle is called when MaxRTT time passed
+ OnIdle func()
+ // If Debug is true, it prints debug messages to stdout.
+ Debug bool
+}
+
+// NewPinger returns a new Pinger struct pointer
+func NewPinger() *Pinger {
+ rand.Seed(time.Now().UnixNano())
+ return &Pinger{
+ id: rand.Intn(0xffff),
+ seq: rand.Intn(0xffff),
+ addrs: make(map[string]*net.IPAddr),
+ network: "ip",
+ source: "",
+ source6: "",
+ hasIPv4: false,
+ hasIPv6: false,
+ Size: TimeSliceLength,
+ MaxRTT: time.Second,
+ OnRecv: nil,
+ OnIdle: nil,
+ Debug: false,
+ }
+}
+
+// Network sets a network endpoints for ICMP ping and returns the previous
+// setting. network arg should be "ip" or "udp" string or if others are
+// specified, it returns an error. If this function isn't called, Pinger
+// uses "ip" as default.
+func (p *Pinger) Network(network string) (string, error) {
+ origNet := p.network
+ switch network {
+ case "ip":
+ fallthrough
+ case "udp":
+ p.network = network
+ default:
+ return origNet, errors.New(network + " can't be used as ICMP endpoint")
+ }
+ return origNet, nil
+}
+
+// Source sets ipv4/ipv6 source IP for sending ICMP packets and returns the previous
+// setting. Empty value indicates to use system default one (for both ipv4 and ipv6).
+func (p *Pinger) Source(source string) (string, error) {
+ // using ipv4 previous value for new empty one
+ origSource := p.source
+ if "" == source {
+ p.mu.Lock()
+ p.source = ""
+ p.source6 = ""
+ p.mu.Unlock()
+ return origSource, nil
+ }
+
+ addr := net.ParseIP(source)
+ if addr == nil {
+ return origSource, errors.New(source + " is not a valid textual representation of an IPv4/IPv6 address")
+ }
+
+ if isIPv4(addr) {
+ p.mu.Lock()
+ p.source = source
+ p.mu.Unlock()
+ } else if isIPv6(addr) {
+ origSource = p.source6
+ p.mu.Lock()
+ p.source6 = source
+ p.mu.Unlock()
+ } else {
+ return origSource, errors.New(source + " is not a valid textual representation of an IPv4/IPv6 address")
+ }
+
+ return origSource, nil
+}
+
+// AddIP adds an IP address to Pinger. ipaddr arg should be a string like
+// "192.0.2.1".
+func (p *Pinger) AddIP(ipaddr string) error {
+ addr := net.ParseIP(ipaddr)
+ if addr == nil {
+ return fmt.Errorf("%s is not a valid textual representation of an IP address", ipaddr)
+ }
+ p.mu.Lock()
+ p.addrs[addr.String()] = &net.IPAddr{IP: addr}
+ if isIPv4(addr) {
+ p.hasIPv4 = true
+ } else if isIPv6(addr) {
+ p.hasIPv6 = true
+ }
+ p.mu.Unlock()
+ return nil
+}
+
+// AddIPAddr adds an IP address to Pinger. ip arg should be a net.IPAddr
+// pointer.
+func (p *Pinger) AddIPAddr(ip *net.IPAddr) {
+ p.mu.Lock()
+ p.addrs[ip.String()] = ip
+ if isIPv4(ip.IP) {
+ p.hasIPv4 = true
+ } else if isIPv6(ip.IP) {
+ p.hasIPv6 = true
+ }
+ p.mu.Unlock()
+}
+
+// RemoveIP removes an IP address from Pinger. ipaddr arg should be a string
+// like "192.0.2.1".
+func (p *Pinger) RemoveIP(ipaddr string) error {
+ addr := net.ParseIP(ipaddr)
+ if addr == nil {
+ return fmt.Errorf("%s is not a valid textual representation of an IP address", ipaddr)
+ }
+ p.mu.Lock()
+ delete(p.addrs, addr.String())
+ p.mu.Unlock()
+ return nil
+}
+
+// RemoveIPAddr removes an IP address from Pinger. ip arg should be a net.IPAddr
+// pointer.
+func (p *Pinger) RemoveIPAddr(ip *net.IPAddr) {
+ p.mu.Lock()
+ delete(p.addrs, ip.String())
+ p.mu.Unlock()
+}
+
+// AddHandler adds event handler to Pinger. event arg should be "receive" or
+// "idle" string.
+//
+// **CAUTION** This function is deprecated. Please use OnRecv and OnIdle field
+// of Pinger struct to set following handlers.
+//
+// "receive" handler should be
+//
+// func(addr *net.IPAddr, rtt time.Duration)
+//
+// type function. The handler is called with a response packet's source address
+// and its elapsed time when Pinger receives a response packet.
+//
+// "idle" handler should be
+//
+// func()
+//
+// type function. The handler is called when MaxRTT time passed. For more
+// detail, please see Run() and RunLoop().
+func (p *Pinger) AddHandler(event string, handler interface{}) error {
+ switch event {
+ case "receive":
+ if hdl, ok := handler.(func(*net.IPAddr, time.Duration)); ok {
+ p.mu.Lock()
+ p.OnRecv = hdl
+ p.mu.Unlock()
+ return nil
+ }
+ return errors.New("receive event handler should be `func(*net.IPAddr, time.Duration)`")
+ case "idle":
+ if hdl, ok := handler.(func()); ok {
+ p.mu.Lock()
+ p.OnIdle = hdl
+ p.mu.Unlock()
+ return nil
+ }
+ return errors.New("idle event handler should be `func()`")
+ }
+ return errors.New("No such event: " + event)
+}
+
+// Run invokes a single send/receive procedure. It sends packets to all hosts
+// which have already been added by AddIP() etc. and wait those responses. When
+// it receives a response, it calls "receive" handler registered by AddHander().
+// After MaxRTT seconds, it calls "idle" handler and returns to caller with
+// an error value. It means it blocks until MaxRTT seconds passed. For the
+// purpose of sending/receiving packets over and over, use RunLoop().
+func (p *Pinger) Run() error {
+ p.mu.Lock()
+ p.ctx = newContext()
+ p.mu.Unlock()
+ p.run(true)
+ p.mu.Lock()
+ defer p.mu.Unlock()
+ return p.ctx.err
+}
+
+// RunLoop invokes send/receive procedure repeatedly. It sends packets to all
+// hosts which have already been added by AddIP() etc. and wait those responses.
+// When it receives a response, it calls "receive" handler registered by
+// AddHander(). After MaxRTT seconds, it calls "idle" handler, resend packets
+// and wait those response. MaxRTT works as an interval time.
+//
+// This is a non-blocking method so immediately returns. If you want to monitor
+// and stop sending packets, use Done() and Stop() methods. For example,
+//
+// p.RunLoop()
+// ticker := time.NewTicker(time.Millisecond * 250)
+// select {
+// case <-p.Done():
+// if err := p.Err(); err != nil {
+// log.Fatalf("Ping failed: %v", err)
+// }
+// case <-ticker.C:
+// break
+// }
+// ticker.Stop()
+// p.Stop()
+//
+// For more details, please see "cmd/ping/ping.go".
+func (p *Pinger) RunLoop() {
+ p.mu.Lock()
+ p.ctx = newContext()
+ p.mu.Unlock()
+ go p.run(false)
+}
+
+// Done returns a channel that is closed when RunLoop() is stopped by an error
+// or Stop(). It must be called after RunLoop() call. If not, it causes panic.
+func (p *Pinger) Done() <-chan bool {
+ return p.ctx.done
+}
+
+// Stop stops RunLoop(). It must be called after RunLoop(). If not, it causes
+// panic.
+func (p *Pinger) Stop() {
+ p.debugln("Stop(): close(p.ctx.stop)")
+ close(p.ctx.stop)
+ p.debugln("Stop(): <-p.ctx.done")
+ <-p.ctx.done
+}
+
+// Err returns an error that is set by RunLoop(). It must be called after
+// RunLoop(). If not, it causes panic.
+func (p *Pinger) Err() error {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+ return p.ctx.err
+}
+
+func (p *Pinger) listen(netProto string, source string) *icmp.PacketConn {
+ conn, err := icmp.ListenPacket(netProto, source)
+ if err != nil {
+ p.mu.Lock()
+ p.ctx.err = err
+ p.mu.Unlock()
+ p.debugln("Run(): close(p.ctx.done)")
+ close(p.ctx.done)
+ return nil
+ }
+ return conn
+}
+
+func (p *Pinger) run(once bool) {
+ p.debugln("Run(): Start")
+ var conn, conn6 *icmp.PacketConn
+ if p.hasIPv4 {
+ if conn = p.listen(ipv4Proto[p.network], p.source); conn == nil {
+ return
+ }
+ defer conn.Close()
+ }
+
+ if p.hasIPv6 {
+ if conn6 = p.listen(ipv6Proto[p.network], p.source6); conn6 == nil {
+ return
+ }
+ defer conn6.Close()
+ }
+
+ recv := make(chan *packet, 1)
+ recvCtx := newContext()
+ wg := new(sync.WaitGroup)
+
+ p.debugln("Run(): call recvICMP()")
+ if conn != nil {
+ wg.Add(1)
+ go p.recvICMP(conn, recv, recvCtx, wg)
+ }
+ if conn6 != nil {
+ wg.Add(1)
+ go p.recvICMP(conn6, recv, recvCtx, wg)
+ }
+
+ p.debugln("Run(): call sendICMP()")
+ queue, err := p.sendICMP(conn, conn6)
+
+ ticker := time.NewTicker(p.MaxRTT)
+
+mainloop:
+ for {
+ select {
+ case <-p.ctx.stop:
+ p.debugln("Run(): <-p.ctx.stop")
+ break mainloop
+ case <-recvCtx.done:
+ p.debugln("Run(): <-recvCtx.done")
+ p.mu.Lock()
+ err = recvCtx.err
+ p.mu.Unlock()
+ break mainloop
+ case <-ticker.C:
+ p.mu.Lock()
+ handler := p.OnIdle
+ p.mu.Unlock()
+ if handler != nil {
+ handler()
+ }
+ if once || err != nil {
+ break mainloop
+ }
+ p.debugln("Run(): call sendICMP()")
+ queue, err = p.sendICMP(conn, conn6)
+ case r := <-recv:
+ p.debugln("Run(): <-recv")
+ p.procRecv(r, queue)
+ }
+ }
+
+ ticker.Stop()
+
+ p.debugln("Run(): close(recvCtx.stop)")
+ close(recvCtx.stop)
+ p.debugln("Run(): wait recvICMP()")
+ wg.Wait()
+
+ p.mu.Lock()
+ p.ctx.err = err
+ p.mu.Unlock()
+
+ p.debugln("Run(): close(p.ctx.done)")
+ close(p.ctx.done)
+ p.debugln("Run(): End")
+}
+
+func (p *Pinger) sendICMP(conn, conn6 *icmp.PacketConn) (map[string]*net.IPAddr, error) {
+ p.debugln("sendICMP(): Start")
+ p.mu.Lock()
+ p.id = rand.Intn(0xffff)
+ p.seq = rand.Intn(0xffff)
+ p.mu.Unlock()
+ queue := make(map[string]*net.IPAddr)
+ wg := new(sync.WaitGroup)
+ for key, addr := range p.addrs {
+ var typ icmp.Type
+ var cn *icmp.PacketConn
+ if isIPv4(addr.IP) {
+ typ = ipv4.ICMPTypeEcho
+ cn = conn
+ } else if isIPv6(addr.IP) {
+ typ = ipv6.ICMPTypeEchoRequest
+ cn = conn6
+ } else {
+ continue
+ }
+ if cn == nil {
+ continue
+ }
+
+ t := timeToBytes(time.Now())
+
+ if p.Size-TimeSliceLength != 0 {
+ t = append(t, byteSliceOfSize(p.Size-TimeSliceLength)...)
+ }
+
+ p.mu.Lock()
+ bytes, err := (&icmp.Message{
+ Type: typ, Code: 0,
+ Body: &icmp.Echo{
+ ID: p.id, Seq: p.seq,
+ Data: t,
+ },
+ }).Marshal(nil)
+ p.mu.Unlock()
+ if err != nil {
+ wg.Wait()
+ return queue, err
+ }
+
+ queue[key] = addr
+ var dst net.Addr = addr
+ if p.network == "udp" {
+ dst = &net.UDPAddr{IP: addr.IP, Zone: addr.Zone}
+ }
+
+ p.debugln("sendICMP(): Invoke goroutine")
+ wg.Add(1)
+ go func(conn *icmp.PacketConn, ra net.Addr, b []byte) {
+ for {
+ if _, err := conn.WriteTo(bytes, ra); err != nil {
+ if neterr, ok := err.(*net.OpError); ok {
+ if neterr.Err == syscall.ENOBUFS {
+ continue
+ }
+ }
+ }
+ break
+ }
+ p.debugln("sendICMP(): WriteTo End")
+ wg.Done()
+ }(cn, dst, bytes)
+ }
+ wg.Wait()
+ p.debugln("sendICMP(): End")
+ return queue, nil
+}
+
+func (p *Pinger) recvICMP(conn *icmp.PacketConn, recv chan<- *packet, ctx *context, wg *sync.WaitGroup) {
+ p.debugln("recvICMP(): Start")
+ for {
+ select {
+ case <-ctx.stop:
+ p.debugln("recvICMP(): <-ctx.stop")
+ wg.Done()
+ p.debugln("recvICMP(): wg.Done()")
+ return
+ default:
+ }
+
+ bytes := make([]byte, 512)
+ conn.SetReadDeadline(time.Now().Add(time.Millisecond * 100))
+ p.debugln("recvICMP(): ReadFrom Start")
+ _, ra, err := conn.ReadFrom(bytes)
+ p.debugln("recvICMP(): ReadFrom End")
+ if err != nil {
+ if neterr, ok := err.(*net.OpError); ok {
+ if neterr.Timeout() {
+ p.debugln("recvICMP(): Read Timeout")
+ continue
+ } else {
+ p.debugln("recvICMP(): OpError happen", err)
+ p.mu.Lock()
+ ctx.err = err
+ p.mu.Unlock()
+ p.debugln("recvICMP(): close(ctx.done)")
+ close(ctx.done)
+ p.debugln("recvICMP(): wg.Done()")
+ wg.Done()
+ return
+ }
+ }
+ }
+ p.debugln("recvICMP(): p.recv <- packet")
+
+ select {
+ case recv <- &packet{bytes: bytes, addr: ra}:
+ case <-ctx.stop:
+ p.debugln("recvICMP(): <-ctx.stop")
+ wg.Done()
+ p.debugln("recvICMP(): wg.Done()")
+ return
+ }
+ }
+}
+
+func (p *Pinger) procRecv(recv *packet, queue map[string]*net.IPAddr) {
+ var ipaddr *net.IPAddr
+ switch adr := recv.addr.(type) {
+ case *net.IPAddr:
+ ipaddr = adr
+ case *net.UDPAddr:
+ ipaddr = &net.IPAddr{IP: adr.IP, Zone: adr.Zone}
+ default:
+ return
+ }
+
+ addr := ipaddr.String()
+ p.mu.Lock()
+ if _, ok := p.addrs[addr]; !ok {
+ p.mu.Unlock()
+ return
+ }
+ p.mu.Unlock()
+
+ var bytes []byte
+ var proto int
+ if isIPv4(ipaddr.IP) {
+ if p.network == "ip" {
+ bytes = ipv4Payload(recv.bytes)
+ } else {
+ bytes = recv.bytes
+ }
+ proto = ProtocolICMP
+ } else if isIPv6(ipaddr.IP) {
+ bytes = recv.bytes
+ proto = ProtocolIPv6ICMP
+ } else {
+ return
+ }
+
+ var m *icmp.Message
+ var err error
+ if m, err = icmp.ParseMessage(proto, bytes); err != nil {
+ return
+ }
+
+ if m.Type != ipv4.ICMPTypeEchoReply && m.Type != ipv6.ICMPTypeEchoReply {
+ return
+ }
+
+ var rtt time.Duration
+ switch pkt := m.Body.(type) {
+ case *icmp.Echo:
+ p.mu.Lock()
+ if pkt.ID == p.id && pkt.Seq == p.seq {
+ rtt = time.Since(bytesToTime(pkt.Data[:TimeSliceLength]))
+ }
+ p.mu.Unlock()
+ default:
+ return
+ }
+
+ if _, ok := queue[addr]; ok {
+ delete(queue, addr)
+ p.mu.Lock()
+ handler := p.OnRecv
+ p.mu.Unlock()
+ if handler != nil {
+ handler(ipaddr, rtt)
+ }
+ }
+}
+
+func (p *Pinger) debugln(args ...interface{}) {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+ if p.Debug {
+ log.Println(args...)
+ }
+}
+
+func (p *Pinger) debugf(format string, args ...interface{}) {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+ if p.Debug {
+ log.Printf(format, args...)
+ }
+}