pub fn from_binary(binary: &Vec<u8>) -> Result<Network, NetworkError> {
    if binary.len() == 0 {
        return Result::Err(NetworkError::new("Empty vec".to_string()));
    }
    match binary[0] {
        1 => Ok(Network::Ping),
        2 => {
            if binary.len() <= 9 {
                return Result::Err(NetworkError::new("Login vec does not contain information about username/password".to_string()));
            }
            let username_length = to_u32(&binary[1..4]);
            let password_length = to_u32(&binary[5..8]);

            let un = try!(get_string(&binary, 9, 9 + username_length));
            let pw = try!(get_string(&binary, 9 + username_length, 9 + username_length + password_length));

            Result::Ok(Network::Login{
                username: un,
                password: pw
            })
        },
        _ => Result::Err(NetworkError::new(format!("Unknown binary type: {}", binary[0])))
    }
}