Struct HostEgress 

pub struct HostEgress { /* private fields */ }

Top-level host-socket egress that dispatches guest traffic to protocol-specific handlers and manages inbound port forwarding.

Implementations

impl HostEgress

pub fn new( gateway_ip: Ipv4Addr, gateway_mac: [u8; 6], guest_ip: Ipv4Addr, reply_tx: Sender<Vec<u8>>, cancel: CancellationToken, mtu: usize, ) -> Self

Creates a new host-socket egress.

reply_tx is used by all sub-proxies to send L2 frames back to the datapath for writing to the guest FD. mtu is the guest link MTU; guest-bound UDP datagrams above it are IPv4-fragmented.

pub fn reply_sender(&self) -> Sender<Vec<u8>>

Returns a clone of the reply sender for external use (e.g. async DNS forwarding).

pub fn set_proxy_awareness( &mut self, dns_log: DnsResolutionLog, proxy_env: ProxyEnvironment, )

Makes the UDP path proxy-aware, mirroring TcpBridge::set_proxy_awareness: shares the fake-IP dns_log (so a fake-IP destination is reversed to its domain) and the detected proxy_env (so a configured SOCKS proxy routes non-gateway, non-bypassed UDP flows). Opt-in and off by default, so the VMM and existing callers are unaffected. HTTP proxies can’t carry UDP, so only a SOCKS proxy engages this.

pub fn handle_outbound(&mut self, frame: &[u8], guest_mac: [u8; 6])

Dispatches an outbound IPv4 frame to the appropriate protocol proxy.

Inbound reply frames (matching an active inbound connection) are intercepted first; everything else is proxied through host sockets.

pub fn handle_inbound_command( &mut self, cmd: InboundCommand, guest_mac: [u8; 6], )

Handles an inbound UDP command from the listener manager.

pub fn maintenance(&mut self)

Runs periodic maintenance (flow cleanup).

pub fn expire_flow(&mut self, _addr: SocketAddr)

Expire a specific flow by address (called from timer wheel).

This is the timer-wheel-driven counterpart to maintenance(). Instead of scanning all flows, it targets a specific expired flow.