fix commands

[bytom/shuttle.git] / vendor / github.com / bytom / vendor / golang.org / x / net / icmp / example_test.go

diff --git a/vendor/github.com/bytom/vendor/golang.org/x/net/icmp/example_test.go b/vendor/github.com/bytom/vendor/golang.org/x/net/icmp/example_test.go
new file mode 100644 (file)
index 0000000..1df4cec
--- /dev/null
+++ b/vendor/github.com/bytom/vendor/golang.org/x/net/icmp/example_test.go
@@ -0,0 +1,63 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package icmp_test
+
+import (
+       "log"
+       "net"
+       "os"
+       "runtime"
+
+       "golang.org/x/net/icmp"
+       "golang.org/x/net/ipv6"
+)
+
+func ExamplePacketConn_nonPrivilegedPing() {
+       switch runtime.GOOS {
+       case "darwin":
+       case "linux":
+               log.Println("you may need to adjust the net.ipv4.ping_group_range kernel state")
+       default:
+               log.Println("not supported on", runtime.GOOS)
+               return
+       }
+
+       c, err := icmp.ListenPacket("udp6", "fe80::1%en0")
+       if err != nil {
+               log.Fatal(err)
+       }
+       defer c.Close()
+
+       wm := icmp.Message{
+               Type: ipv6.ICMPTypeEchoRequest, Code: 0,
+               Body: &icmp.Echo{
+                       ID: os.Getpid() & 0xffff, Seq: 1,
+                       Data: []byte("HELLO-R-U-THERE"),
+               },
+       }
+       wb, err := wm.Marshal(nil)
+       if err != nil {
+               log.Fatal(err)
+       }
+       if _, err := c.WriteTo(wb, &net.UDPAddr{IP: net.ParseIP("ff02::1"), Zone: "en0"}); err != nil {
+               log.Fatal(err)
+       }
+
+       rb := make([]byte, 1500)
+       n, peer, err := c.ReadFrom(rb)
+       if err != nil {
+               log.Fatal(err)
+       }
+       rm, err := icmp.ParseMessage(58, rb[:n])
+       if err != nil {
+               log.Fatal(err)
+       }
+       switch rm.Type {
+       case ipv6.ICMPTypeEchoReply:
+               log.Printf("got reflection from %v", peer)
+       default:
+               log.Printf("got %+v; want echo reply", rm)
+       }
+}