Rust

Check Internet Connectivity

See more Socket/SSL/TLS Examples

Demonstrates an efficient way to test for Internet connectivity. Rust

let socket = chilkat::Socket::new();
// 1. Use a reliable Anycast IP. 
//    8.8.8.8 (Google) or 1.1.1.1 (Cloudflare) are the industry standards.
let target_ip = "8.8.8.8".to_string();

// 2. Use Port 53 (DNS). 
//    DNS servers typically listen on TCP Port 53 as well as UDP. 
//    (Alternatively, use port 443 if you suspect port 53 is blocked).
let port = 53;

// 3. Disable SSL (0). 
//    We are not doing a handshake, just a TCP connection.
let ssl = false;

// 4. Short Timeout (1500ms).
//    If you can't reach Google in 1.5 seconds, the connection is 
//    likely too poor for practical use anyway.
let timeout_ms = 1500;

// Connect
if socket.connect(&target_ip, port, ssl, timeout_ms).is_err() {
    println!("{}", socket.last_error_text());
    return;
}

let _ = socket.close(10);

println!("We have Internet connectivity.");