cubic 0.14.0

Cubic is a lightweight command line manager for virtual machines. It has a simple, daemon-less and rootless design. All Cubic virtual machines run isolated in the user context. Cubic is built on top of QEMU, KVM and cloud-init. Show all supported images: $ cubic images Create a new virtual machine instance: $ cubic create mymachine --image ubuntu:noble List all virtual machine instances: $ cubic instances Start an instance: $ cubic start <instance name> Stop an instance: $ cubic stop <instance name> Open a shell in the instance: $ cubic ssh <machine name> Copy a file from the host to the instance: $ cubic scp <path/to/host/file> <machine>:<path/to/guest/file> Copy a file from the instance to the hots: $ cubic scp <machine>:<path/to/guest/file> <path/to/host/file> 
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use std::net::TcpStream;
use std::time::Duration;

pub struct PortChecker {
    pub port: u16,
}

impl PortChecker {
    pub fn new(port: u16) -> Self {
        PortChecker { port }
    }

    pub fn try_connect(&self) -> bool {
        let mut buf = [0];
        TcpStream::connect(format!("127.0.0.1:{}", &self.port))
            .and_then(|stream| {
                stream.set_read_timeout(Some(Duration::from_secs(1)))?;
                stream.peek(&mut buf)
            })
            .is_ok()
    }
}