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Add system stack

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世界 2022-09-06 19:24:47 +08:00
parent 0efafc9963
commit 2f15b0cd3f
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GPG key ID: CD109927C34A63C4
26 changed files with 1713 additions and 79 deletions
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30
lwip.go
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@ -7,7 +7,6 @@ import (
"net"
"net/netip"
"os"
"runtime"
lwip "github.com/sagernet/go-tun2socks/core"
"github.com/sagernet/sing/common"
@ -28,19 +27,15 @@ type LWIP struct {
}
func NewLWIP(
ctx context.Context,
tun Tun,
tunMtu uint32,
udpTimeout int64,
handler Handler,
options StackOptions,
) (Stack, error) {
return &LWIP{
ctx: ctx,
tun: tun,
tunMtu: tunMtu,
handler: handler,
ctx: options.Context,
tun: options.Tun,
tunMtu: options.MTU,
handler: options.Handler,
stack: lwip.NewLWIPStack(),
udpNat: udpnat.New[netip.AddrPort](udpTimeout, handler),
udpNat: udpnat.New[netip.AddrPort](options.UDPTimeout, options.Handler),
}, nil
}
@ -57,10 +52,7 @@ func (l *LWIP) loopIn() {
l.loopInWintun(winTun)
return
}
mtu := int(l.tunMtu)
if runtime.GOOS == "darwin" {
mtu += 4
}
mtu := int(l.tunMtu) + PacketOffset
_buffer := buf.StackNewSize(mtu)
defer common.KeepAlive(_buffer)
buffer := common.Dup(_buffer)
@ -71,13 +63,7 @@ func (l *LWIP) loopIn() {
if err != nil {
return
}
var packet []byte
if runtime.GOOS == "darwin" {
packet = data[4:n]
} else {
packet = data[:n]
}
_, err = l.stack.Write(packet)
_, err = l.stack.Write(data[PacketOffset:n])
if err != nil {
if err.Error() == "stack closed" {
return