openport - find a free unused port

Finds a free port, that is unused on both TCP and UDP.

Usage:

use openport::pick_unused_port;
let port: u16 = pick_unused_port(15000..16000).expect("No ports free");

License

openport is provided under the MPL v2.0 license. Please refer to the LICENSE file for more details.

lib.rs:

openport

Find a free unused port

Features

• rand: Add pick_random_unused_port pub fn that allows finding a random port within the range 15000..25000

Usage

The following steps describe a basic usage of openport:

1. Call openport::pick_unused_port and pass a range of ports you want to find a free port in
2. Enable the rand feature and call openport::pick_random_unused_port to find a random open port within the range 15000..16000
3. Call openport::is_free to check if a specific port is open on both TCP and UDP
4. Call openport::is_free_tcp to check if a specific port is open on TCP
5. Call openport::is_free_udp to check if a specific port is open on UDP