mirror of https://github.com/k3d-io/k3d
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.9 KiB
64 lines
1.9 KiB
/*
|
|
Copyright © 2020-2023 The k3d Author(s)
|
|
|
|
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.
|
|
*/
|
|
|
|
package util
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
|
|
"github.com/docker/go-connections/nat"
|
|
)
|
|
|
|
// GetFreePort tries to fetch an open port from the OS-Kernel
|
|
func GetFreePort() (int, error) {
|
|
tcpAddress, err := net.ResolveTCPAddr("tcp", "localhost:0")
|
|
if err != nil {
|
|
return 0, fmt.Errorf("failed to resolve address 'localhost:0': %w", err)
|
|
}
|
|
|
|
tcpListener, err := net.ListenTCP("tcp", tcpAddress)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("failed to create tcp listener: %w", err)
|
|
}
|
|
defer tcpListener.Close()
|
|
|
|
return tcpListener.Addr().(*net.TCPAddr).Port, nil
|
|
}
|
|
|
|
var equalHostIPs = map[string]interface{}{
|
|
"": nil,
|
|
"127.0.0.1": nil,
|
|
"0.0.0.0": nil,
|
|
"localhost": nil,
|
|
}
|
|
|
|
func IsPortBindingEqual(a, b nat.PortBinding) bool {
|
|
if a.HostPort == b.HostPort {
|
|
if _, ok := equalHostIPs[a.HostIP]; ok {
|
|
if _, ok := equalHostIPs[b.HostIP]; ok {
|
|
return true
|
|
}
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|