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chore: support relay native udp when using ss and ssr protocol

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This commit is contained in:
wwqgtxx 2022-12-19 17:02:04 +08:00
parent ff01d845b4
commit c63dd62ed2
5 changed files with 144 additions and 21 deletions
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10
adapter/outbound/base.go
View file

@ -62,6 +62,16 @@ func (b *Base) ListenPacketContext(ctx context.Context, metadata *C.Metadata, op
return nil, errors.New("no support")
}
// ListenPacketOnPacketConn implements C.ProxyAdapter
func (b *Base) ListenPacketOnPacketConn(ctx context.Context, c C.PacketConn, metadata *C.Metadata) (C.PacketConn, error) {
return nil, errors.New("no support")
}
// SupportLPPC implements C.ProxyAdapter
func (b *Base) SupportLPPC() bool {
return false
}
// ListenPacketOnStreamConn implements C.ProxyAdapter
func (b *Base) ListenPacketOnStreamConn(c net.Conn, metadata *C.Metadata) (_ C.PacketConn, err error) {
return nil, errors.New("no support")

16
adapter/outbound/shadowsocks.go
View file

@ -120,6 +120,22 @@ func (ss *ShadowSocks) ListenPacketContext(ctx context.Context, metadata *C.Meta
return newPacketConn(pc, ss), nil
}
// ListenPacketOnPacketConn implements C.ProxyAdapter
func (ss *ShadowSocks) ListenPacketOnPacketConn(ctx context.Context, c C.PacketConn, metadata *C.Metadata) (_ C.PacketConn, err error) {
addr, err := resolveUDPAddrWithPrefer(ctx, "udp", ss.addr, ss.prefer)
if err != nil {
return nil, err
}
pc := ss.method.DialPacketConn(&bufio.BindPacketConn{PacketConn: c, Addr: addr})
return newPacketConn(pc, ss), nil
}
// SupportLPPC implements C.ProxyAdapter
func (ss *ShadowSocks) SupportLPPC() bool {
return true
}
// ListenPacketOnStreamConn implements C.ProxyAdapter
func (ss *ShadowSocks) ListenPacketOnStreamConn(c net.Conn, metadata *C.Metadata) (_ C.PacketConn, err error) {
if ss.option.UDPOverTCP {

17
adapter/outbound/shadowsocksr.go
View file

@ -91,6 +91,23 @@ func (ssr *ShadowSocksR) ListenPacketContext(ctx context.Context, metadata *C.Me
return newPacketConn(&ssPacketConn{PacketConn: pc, rAddr: addr}, ssr), nil
}
// ListenPacketOnPacketConn implements C.ProxyAdapter
func (ssr *ShadowSocksR) ListenPacketOnPacketConn(ctx context.Context, c C.PacketConn, metadata *C.Metadata) (_ C.PacketConn, err error) {
addr, err := resolveUDPAddrWithPrefer(ctx, "udp", ssr.addr, ssr.prefer)
if err != nil {
return nil, err
}
pc := ssr.cipher.PacketConn(c)
pc = ssr.protocol.PacketConn(pc)
return newPacketConn(&ssPacketConn{PacketConn: pc, rAddr: addr}, ssr), nil
}
// SupportLPPC implements C.ProxyAdapter
func (ssr *ShadowSocksR) SupportLPPC() bool {
return true
}
func NewShadowSocksR(option ShadowSocksROption) (*ShadowSocksR, error) {
// SSR protocol compatibility
// https://github.com/Dreamacro/clash/pull/2056

119
adapter/outboundgroup/relay.go
View file

@ -4,6 +4,7 @@ import (
"context"
"encoding/json"
"fmt"
"net"
"github.com/Dreamacro/clash/adapter/outbound"
"github.com/Dreamacro/clash/component/dialer"
@ -29,14 +30,23 @@ func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata, opts ...d
first := proxies[0]
last := proxies[len(proxies)-1]
c, err := dialer.DialContext(ctx, "tcp", first.Addr(), r.Base.DialOptions(opts...)...)
var c net.Conn
var currentMeta *C.Metadata
var err error
currentMeta, err = addrToMetadata(proxies[1].Addr())
if err != nil {
return nil, err
}
c, err = first.DialContext(ctx, currentMeta, r.Base.DialOptions(opts...)...)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
tcpKeepAlive(c)
var currentMeta *C.Metadata
for _, proxy := range proxies[1:] {
first = proxies[1]
for _, proxy := range proxies[2:] {
currentMeta, err = addrToMetadata(proxy.Addr())
if err != nil {
return nil, err
@ -77,23 +87,85 @@ func (r *Relay) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
return proxies[0].ListenPacketContext(ctx, metadata, r.Base.DialOptions(opts...)...)
}
udtId := -1
for i, proxy := range proxies {
if !proxy.SupportUDP() {
return nil, fmt.Errorf("%s don't support udp", proxy.Name())
}
if proxy.SupportUOT() {
udtId = i // we need the latest id, so don't break
}
}
first := proxies[0]
last := proxies[len(proxies)-1]
c, err := dialer.DialContext(ctx, "tcp", first.Addr(), r.Base.DialOptions(opts...)...)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
tcpKeepAlive(c)
var pc C.PacketConn
var currentMeta *C.Metadata
for _, proxy := range proxies[1:] {
if udtId != -1 {
c, err := dialer.DialContext(ctx, "tcp", first.Addr(), r.Base.DialOptions(opts...)...)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
tcpKeepAlive(c)
for _, proxy := range proxies[1 : udtId+1] {
currentMeta, err = addrToMetadata(proxy.Addr())
if err != nil {
return nil, err
}
c, err = first.StreamConn(c, currentMeta)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
first = proxy
}
if first == last {
currentMeta = metadata
} else {
currentMeta, err = addrToMetadata(proxies[udtId+1].Addr())
if err != nil {
return nil, err
}
currentMeta.NetWork = C.UDP
}
c, err = first.StreamConn(c, currentMeta)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
pc, err = first.ListenPacketOnStreamConn(c, currentMeta)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
if first == last {
return pc, nil
}
} else {
currentMeta, err = addrToMetadata(proxies[1].Addr())
if err != nil {
return nil, err
}
currentMeta.NetWork = C.UDP
pc, err = first.ListenPacketContext(ctx, currentMeta, r.Base.DialOptions(opts...)...)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
udtId = 0
}
first = proxies[udtId+1]
for _, proxy := range proxies[udtId+2:] {
currentMeta, err = addrToMetadata(proxy.Addr())
if err != nil {
return nil, err
}
currentMeta.NetWork = C.UDP
c, err = first.StreamConn(c, currentMeta)
pc, err = first.ListenPacketOnPacketConn(ctx, pc, currentMeta)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
@ -101,17 +173,11 @@ func (r *Relay) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
first = proxy
}
c, err = last.StreamConn(c, metadata)
pc, err = last.ListenPacketOnPacketConn(ctx, pc, metadata)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", last.Addr(), err)
}
var pc C.PacketConn
pc, err = last.ListenPacketOnStreamConn(c, metadata)
if err != nil {
return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
}
for i := len(chainProxies) - 2; i >= 0; i-- {
pc.AppendToChains(chainProxies[i])
}
@ -127,8 +193,19 @@ func (r *Relay) SupportUDP() bool {
if len(proxies) == 0 { // C.Direct
return true
}
last := proxies[len(proxies)-1]
return last.SupportUDP() && last.SupportUOT()
for i := len(proxies) - 1; i >= 0; i-- {
proxy := proxies[i]
if !proxy.SupportUDP() {
return false
}
if proxy.SupportUOT() {
return true
}
if !proxy.SupportLPPC() {
return false
}
}
return true
}
// MarshalJSON implements C.ProxyAdapter

3
constant/adapters.go
View file

@ -108,6 +108,9 @@ type ProxyAdapter interface {
SupportUOT() bool
ListenPacketOnStreamConn(c net.Conn, metadata *Metadata) (PacketConn, error)
SupportLPPC() bool
ListenPacketOnPacketConn(ctx context.Context, c PacketConn, metadata *Metadata) (PacketConn, error)
// Unwrap extracts the proxy from a proxy-group. It returns nil when nothing to extract.
Unwrap(metadata *Metadata, touch bool) Proxy
}