Function send_tx

chapter 4/server.rs:143–153

(addr: &str, tx: &Transaction)

}

pub fn send_tx(addr: &str, tx: &Transaction) {
    let socket_addr = addr.parse().unwrap();
    let node_addr = GLOBAL_CONFIG.get_node_addr().parse().unwrap();
    send_data(
        socket_addr,
        Package::Tx {
            addr_from: node_addr,
            transaction: tx.serialize(),
        },
    );
}

fn send_version(addr: &str, height: usize) {
    let socket_addr = addr.parse().unwrap();