forked from google/cloudprober
/
icmpconn.go
58 lines (48 loc) · 1.46 KB
/
icmpconn.go
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// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ping
import (
"net"
"time"
"golang.org/x/net/icmp"
)
// icmpConn is an interface wrapper for *icmp.PacketConn to allow testing.
type icmpConn interface {
read(buf []byte) (n int, peer net.Addr, err error)
write(buf []byte, peer net.Addr) (int, error)
setReadDeadline(deadline time.Time)
close()
}
type icmpPacketConn struct {
c *icmp.PacketConn
}
func newICMPConn(proto, source string) (icmpConn, error) {
c, err := icmp.ListenPacket(proto, source)
if err != nil {
return nil, err
}
return &icmpPacketConn{c}, nil
}
func (ipc *icmpPacketConn) read(buf []byte) (int, net.Addr, error) {
return ipc.c.ReadFrom(buf)
}
func (ipc *icmpPacketConn) write(buf []byte, peer net.Addr) (int, error) {
return ipc.c.WriteTo(buf, peer)
}
func (ipc *icmpPacketConn) setReadDeadline(deadline time.Time) {
ipc.c.SetReadDeadline(deadline)
}
func (ipc *icmpPacketConn) close() {
ipc.c.Close()
}