Rust

Bind and Listen on an Available Port in a Range

Demonstrates Socket.BindAndListenPortRange, which searches an inclusive port range for an available TCP port, binds it, and begins listening. It returns the selected port, or -1 on failure.

Background. This is useful when any of several ports is acceptable and the application needs to discover which one was bound.

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Rust

let socket = chilkat::Socket::new();

// Search the inclusive port range for an available TCP port, bind it, and begin listening.  The
// method returns the selected port, or -1 when no port can be bound.
let bound_port = socket.bind_and_listen_port_range(5000, 5100, 25);
if bound_port < 0 {
    println!("{}", socket.last_error_text());
    return;
}

println!("Listening on port {}", bound_port);