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port.go
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port.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package utils
import (
"net"
)
func GetAvailablePort() int {
addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
if err != nil {
return 0
}
l, err := net.ListenTCP("tcp", addr)
if err != nil {
return 0
}
defer l.Close()
return l.Addr().(*net.TCPAddr).Port
}