3-way merge of amnezia-vpn/amneziawg-go (AWG2, I1-I5 CPS + S4 keepalive) into
sagernet/wireguard-go@506b763185 (the base sing-box uses). Keeps sagernet's
sing-box-compat additions (Send offset contract, InputPacket, conn reserved/
control) and neutralizes the encapsulating headroom (MessageEncapsulatingTransportSize=0)
so obfuscation composes cleanly. Obfuscation lives in device/ (obf*.go, magic-header.go
new files + send/receive/device/uapi grafts); conn/tun/ipc kept pure sagernet.
LIVE-VALIDATED: handshake + keepalive + traffic against a real AmneziaWG 2.0 server.
It should be POLLIN because closeFd is read-only file.
Signed-off-by: Kurnia D Win <kurnia.d.win@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This lets us include the package on those platforms in a
followup commit where we split out a conn package from device.
It also lets us run `go test ./...` when developing on macOS.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
On my Chromebook (Linux 4.19.44 in a VM) and on an AWS EC2
machine, select() was sometimes returning EINTR. This is
harmless and just means you should try again. So let's try
again.
This eliminates a problem where the tunnel fails to come up
correctly and the program needs to be restarted.
Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
