pub fn from_binary(binary: &Vec<u8>) -> Result<Network, NetworkError> {
    match binary[0] {
        1 => Ok(Network::Ping),
        2 => {
            let username_length = to_u32(&binary[1..4]);
            let password_length = to_u32(&binary[5..8]);
            match get_string(&binary, 9, 9 + username_length) {
                Result::Ok(un) => match get_string(&binary, 9 + username_length, 9 + username_length + password_length) {
                    Result::Ok(pw) => Result::Ok(Network::Login{
                        username: un,
                        password: pw
                    }),
                    Result::Err(e) => Result::Err(NetworkError::new(e.to_string()))
                },
                Result::Err(e) => Result::Err(NetworkError::new(e.to_string()))
            }
        },
        _ => Result::Err(NetworkError::new(format!("Unknown binary type: {}", binary[0])))
    }
}