security issue, udp listen 0.0.0.0 host

[ArtemIsmagilov]

I suggest establishing a connection udp.bind and udp.connect from user arguments and not independently. It will be more flexible and safe. Now you listen to everything

rust-memcache/src/stream/udp_stream.rs

Line 20 in 8e270d8

let socket = UdpSocket::bind("0.0.0.0:0")?;

[ArtemIsmagilov]

It would be nice to do something like...

impl UdpStream {
    pub fn new(bind_addr: &Url, connect_addr: &Url) -> Result<Self, MemcacheError> {
        let socket = UdpSocket::bind(&*bind_addr.socket_addrs(|| None)?)?;
        socket.connect(&*connect_addr.socket_addrs(|| None)?)?;

I will try to implement this, while things are difficult.