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Add endpoint independent nat support for tun inbound

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This commit is contained in:
世界
2022-07-26 19:21:56 +08:00
parent 0347a7c038
commit f008d0bde3
12 changed files with 54 additions and 36 deletions
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55
inbound/tun.go
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@@ -8,8 +8,10 @@ import (
"net/netip"
"strconv"
"strings"
"time"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/canceler"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
@@ -27,15 +29,17 @@ var _ adapter.Inbound = (*Tun)(nil)
type Tun struct {
tag string
ctx context.Context
router adapter.Router
logger log.ContextLogger
inboundOptions option.InboundOptions
tunName string
tunMTU uint32
inet4Address netip.Prefix
inet6Address netip.Prefix
autoRoute bool
ctx context.Context
router adapter.Router
logger log.ContextLogger
inboundOptions option.InboundOptions
tunName string
tunMTU uint32
inet4Address netip.Prefix
inet6Address netip.Prefix
autoRoute bool
endpointIndependentNat bool
udpTimeout int64
tunIf tun.Tun
tunStack *tun.GVisorTun
@@ -50,17 +54,25 @@ func NewTun(ctx context.Context, router adapter.Router, logger log.ContextLogger
if tunMTU == 0 {
tunMTU = 1500
}
var udpTimeout int64
if options.UDPTimeout != 0 {
udpTimeout = options.UDPTimeout
} else {
udpTimeout = int64(C.UDPTimeout.Seconds())
}
return &Tun{
tag: tag,
ctx: ctx,
router: router,
logger: logger,
inboundOptions: options.InboundOptions,
tunName: tunName,
tunMTU: tunMTU,
inet4Address: options.Inet4Address.Build(),
inet6Address: options.Inet6Address.Build(),
autoRoute: options.AutoRoute,
tag: tag,
ctx: ctx,
router: router,
logger: logger,
inboundOptions: options.InboundOptions,
tunName: tunName,
tunMTU: tunMTU,
inet4Address: options.Inet4Address.Build(),
inet6Address: options.Inet6Address.Build(),
autoRoute: options.AutoRoute,
endpointIndependentNat: options.EndpointIndependentNat,
udpTimeout: udpTimeout,
}, nil
}
@@ -78,7 +90,7 @@ func (t *Tun) Start() error {
return E.Cause(err, "configure tun interface")
}
t.tunIf = tunIf
t.tunStack = tun.NewGVisor(t.ctx, tunIf, t.tunMTU, t)
t.tunStack = tun.NewGVisor(t.ctx, tunIf, t.tunMTU, t.endpointIndependentNat, t.udpTimeout, t)
err = t.tunStack.Start()
if err != nil {
return err
@@ -116,6 +128,9 @@ func (t *Tun) NewConnection(ctx context.Context, conn net.Conn, upstreamMetadata
func (t *Tun) NewPacketConnection(ctx context.Context, conn N.PacketConn, upstreamMetadata M.Metadata) error {
ctx = log.ContextWithNewID(ctx)
if tun.NeedTimeoutFromContext(ctx) {
ctx, conn = canceler.NewPacketConn(ctx, conn, time.Duration(t.udpTimeout)*time.Second)
}
var metadata adapter.InboundContext
metadata.Inbound = t.tag
metadata.InboundType = C.TypeTun