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// Copyright 2017 CNI authors
//
// 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 testutils
import (
"bytes"
"fmt"
"os/exec"
"strconv"
"syscall"
)
// Ping shells out to the `ping` command. Returns nil if successful.
func Ping(saddr, daddr string, isV6 bool, timeoutSec int) error {
args := []string{
"-c", "1",
"-W", strconv.Itoa(timeoutSec),
"-I", saddr,
daddr,
}
bin := "ping"
if isV6 {
bin = "ping6"
}
cmd := exec.Command(bin, args...)
var stderr bytes.Buffer
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
switch e := err.(type) {
case *exec.ExitError:
return fmt.Errorf("%v exit status %d: %s",
args, e.Sys().(syscall.WaitStatus).ExitStatus(),
stderr.String())
default:
return err
}
}
return nil
}
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