pub fn udp_bind(addr: SocketAddr) -> Result<UdpSocket, ServerBindError>Expand description
Bind a non-blocking UDP listener socket on addr.
Mirrors server_bind but for DGRAM: SO_REUSEADDR (unix) + SO_REUSEPORT
so the socket can be SCM-passed and re-bound across a hot-upgrade, then
bind + non-blocking. Unlike TCP there is no listen() — a UDP socket
receives datagrams directly. The returned mio::net::UdpSocket is the one
listener socket the UDP datapath demuxes many flows over (one-socket-many-
flows; per-flow return sockets are created by udp_connect).