Send a 4-byte Length Prefix over a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.SendCount, which sends a four-byte length prefix in network byte order. This is typically used to tell the peer how many bytes follow.

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

// Connect to the server using TLS.
let b_tls = true;
let max_wait_ms = 5000;
if socket.connect("example.com", 5000, b_tls, max_wait_ms).is_err() {
    println!("{}", socket.last_error_text());
    return;
}

// Send a four-byte length prefix in network byte order.  A common framing pattern is to send the
// number of bytes in a message before the message itself, so the peer knows exactly how many bytes
// to read.
let message_length = 512;
if socket.send_count(message_length).is_err() {
    println!("{}", socket.last_error_text());
    return;
}

println!("Length prefix sent.");