Setting the transfer type

Let's add a new command before we test our server again:

use cmd::TransferType;

#[async]
fn handle_cmd(mut self, cmd: Command) -> Result<Self> {
    match cmd {
        // …
        Command::Type(typ) => {
            self.transfer_type = typ;
            self = await!(self.send(Answer::new(ResultCode::Ok, "Transfer type 
            changed successfully")))?;
        }
        // …
    }
}

This requires a new attribute for our Client structure:

struct Client {
    cwd: PathBuf,
    server_root: PathBuf,
    transfer_type: TransferType,
    writer: Writer,
}

And we need to update the constructor:

impl Client {
    fn new(writer: Writer, server_root: PathBuf) -> Client {
        Client {
            cwd: PathBuf::from("/"),
            server_root,
            transfer_type: TransferType::Ascii,
            writer,
        }
    }
}

If we run this new server and connect to it through FileZilla, we'll see the following:

Figure 9.3