Add shadowsocks 2022 multi-user inbound

This commit is contained in:
世界 2022-05-24 07:25:12 +08:00
parent b6391cbbe1
commit cf7e675c45
No known key found for this signature in database
GPG Key ID: CD109927C34A63C4
6 changed files with 427 additions and 50 deletions

2
go.sum
View File

@ -174,8 +174,6 @@ github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 h1:f/FNXud6gA3MNr
github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3/go.mod h1:HgjTstvQsPGkxUsCd2KWxErBblirPizecHcpD3ffK+s= github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3/go.mod h1:HgjTstvQsPGkxUsCd2KWxErBblirPizecHcpD3ffK+s=
github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ= github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g= github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
github.com/sagernet/sing v0.0.0-20220522025344-b21aa294fca3 h1:z6cVzCta0vPVKo4lsiHMEDmw3cSFC5TGojXobbTS1DA=
github.com/sagernet/sing v0.0.0-20220522025344-b21aa294fca3/go.mod h1:7aFl1bLxdWLIhptc1DwhMWpRfT62rJYzKPYuYlzYs5w=
github.com/sagernet/sing v0.0.0-20220523024450-2216901ec429 h1:31vx64WHtycaqw0bGLl6ImJvmHsXqHoPzkuwKmTqbx8= github.com/sagernet/sing v0.0.0-20220523024450-2216901ec429 h1:31vx64WHtycaqw0bGLl6ImJvmHsXqHoPzkuwKmTqbx8=
github.com/sagernet/sing v0.0.0-20220523024450-2216901ec429/go.mod h1:7aFl1bLxdWLIhptc1DwhMWpRfT62rJYzKPYuYlzYs5w= github.com/sagernet/sing v0.0.0-20220523024450-2216901ec429/go.mod h1:7aFl1bLxdWLIhptc1DwhMWpRfT62rJYzKPYuYlzYs5w=
github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb h1:XfLJSPIOUX+osiMraVgIrMR27uMXnRJWGm1+GL8/63U= github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb h1:XfLJSPIOUX+osiMraVgIrMR27uMXnRJWGm1+GL8/63U=

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@ -48,13 +48,36 @@ type ShadowsocksServerConfig struct {
func (v *ShadowsocksServerConfig) Build() (proto.Message, error) { func (v *ShadowsocksServerConfig) Build() (proto.Message, error) {
if C.Contains(shadowaead_2022.List, v.Cipher) { if C.Contains(shadowaead_2022.List, v.Cipher) {
if len(v.Users) > 0 {
if v.Cipher == "" {
return nil, newError("shadowsocks 2022 (multi-user): missing server method")
}
if !strings.Contains(v.Cipher, "aes") {
return nil, newError("shadowsocks 2022 (multi-user): only blake3-aes-*-gcm methods are supported")
}
config := new(shadowsocks_2022.MultiUserServerConfig)
config.Method = v.Cipher
config.Key = v.Password
config.Network = v.NetworkList.Build()
for _, user := range v.Users {
if user.Cipher != "" {
return nil, newError("shadowsocks 2022 (multi-user): users must have empty method")
}
config.Users = append(config.Users, &shadowsocks_2022.User{
Key: user.Password,
Email: user.Email,
})
}
return config, nil
}
config := new(shadowsocks_2022.ServerConfig) config := new(shadowsocks_2022.ServerConfig)
config.Method = v.Cipher config.Method = v.Cipher
config.Key = v.Password config.Key = v.Password
config.Network = v.NetworkList.Build() config.Network = v.NetworkList.Build()
if len(v.Users) != 0 {
return nil, newError("shadowsocks 2022 ciphers accept no users.")
}
return config, nil return config, nil
} }

View File

@ -28,7 +28,8 @@ type ServerConfig struct {
Method string `protobuf:"bytes,1,opt,name=method,proto3" json:"method,omitempty"` Method string `protobuf:"bytes,1,opt,name=method,proto3" json:"method,omitempty"`
Key string `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"` Key string `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
Network []net.Network `protobuf:"varint,3,rep,packed,name=network,proto3,enum=xray.common.net.Network" json:"network,omitempty"` Email string `protobuf:"bytes,3,opt,name=email,proto3" json:"email,omitempty"`
Network []net.Network `protobuf:"varint,4,rep,packed,name=network,proto3,enum=xray.common.net.Network" json:"network,omitempty"`
} }
func (x *ServerConfig) Reset() { func (x *ServerConfig) Reset() {
@ -77,6 +78,13 @@ func (x *ServerConfig) GetKey() string {
return "" return ""
} }
func (x *ServerConfig) GetEmail() string {
if x != nil {
return x.Email
}
return ""
}
func (x *ServerConfig) GetNetwork() []net.Network { func (x *ServerConfig) GetNetwork() []net.Network {
if x != nil { if x != nil {
return x.Network return x.Network
@ -84,6 +92,132 @@ func (x *ServerConfig) GetNetwork() []net.Network {
return nil return nil
} }
type MultiUserServerConfig struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Method string `protobuf:"bytes,1,opt,name=method,proto3" json:"method,omitempty"`
Key string `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
Users []*User `protobuf:"bytes,3,rep,name=users,proto3" json:"users,omitempty"`
Network []net.Network `protobuf:"varint,4,rep,packed,name=network,proto3,enum=xray.common.net.Network" json:"network,omitempty"`
}
func (x *MultiUserServerConfig) Reset() {
*x = MultiUserServerConfig{}
if protoimpl.UnsafeEnabled {
mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *MultiUserServerConfig) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*MultiUserServerConfig) ProtoMessage() {}
func (x *MultiUserServerConfig) ProtoReflect() protoreflect.Message {
mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[1]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use MultiUserServerConfig.ProtoReflect.Descriptor instead.
func (*MultiUserServerConfig) Descriptor() ([]byte, []int) {
return file_proxy_shadowsocks_2022_config_proto_rawDescGZIP(), []int{1}
}
func (x *MultiUserServerConfig) GetMethod() string {
if x != nil {
return x.Method
}
return ""
}
func (x *MultiUserServerConfig) GetKey() string {
if x != nil {
return x.Key
}
return ""
}
func (x *MultiUserServerConfig) GetUsers() []*User {
if x != nil {
return x.Users
}
return nil
}
func (x *MultiUserServerConfig) GetNetwork() []net.Network {
if x != nil {
return x.Network
}
return nil
}
type User struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
Email string `protobuf:"bytes,2,opt,name=email,proto3" json:"email,omitempty"`
}
func (x *User) Reset() {
*x = User{}
if protoimpl.UnsafeEnabled {
mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[2]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *User) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*User) ProtoMessage() {}
func (x *User) ProtoReflect() protoreflect.Message {
mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[2]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use User.ProtoReflect.Descriptor instead.
func (*User) Descriptor() ([]byte, []int) {
return file_proxy_shadowsocks_2022_config_proto_rawDescGZIP(), []int{2}
}
func (x *User) GetKey() string {
if x != nil {
return x.Key
}
return ""
}
func (x *User) GetEmail() string {
if x != nil {
return x.Email
}
return ""
}
type ClientConfig struct { type ClientConfig struct {
state protoimpl.MessageState state protoimpl.MessageState
sizeCache protoimpl.SizeCache sizeCache protoimpl.SizeCache
@ -99,7 +233,7 @@ type ClientConfig struct {
func (x *ClientConfig) Reset() { func (x *ClientConfig) Reset() {
*x = ClientConfig{} *x = ClientConfig{}
if protoimpl.UnsafeEnabled { if protoimpl.UnsafeEnabled {
mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[1] mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[3]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi) ms.StoreMessageInfo(mi)
} }
@ -112,7 +246,7 @@ func (x *ClientConfig) String() string {
func (*ClientConfig) ProtoMessage() {} func (*ClientConfig) ProtoMessage() {}
func (x *ClientConfig) ProtoReflect() protoreflect.Message { func (x *ClientConfig) ProtoReflect() protoreflect.Message {
mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[1] mi := &file_proxy_shadowsocks_2022_config_proto_msgTypes[3]
if protoimpl.UnsafeEnabled && x != nil { if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil { if ms.LoadMessageInfo() == nil {
@ -125,7 +259,7 @@ func (x *ClientConfig) ProtoReflect() protoreflect.Message {
// Deprecated: Use ClientConfig.ProtoReflect.Descriptor instead. // Deprecated: Use ClientConfig.ProtoReflect.Descriptor instead.
func (*ClientConfig) Descriptor() ([]byte, []int) { func (*ClientConfig) Descriptor() ([]byte, []int) {
return file_proxy_shadowsocks_2022_config_proto_rawDescGZIP(), []int{1} return file_proxy_shadowsocks_2022_config_proto_rawDescGZIP(), []int{3}
} }
func (x *ClientConfig) GetAddress() *net.IPOrDomain { func (x *ClientConfig) GetAddress() *net.IPOrDomain {
@ -173,33 +307,49 @@ var file_proxy_shadowsocks_2022_config_proto_rawDesc = []byte{
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0x72, 0x6f, 0x74, 0x6f, 0x33,
} }
var ( var (
@ -214,21 +364,25 @@ func file_proxy_shadowsocks_2022_config_proto_rawDescGZIP() []byte {
return file_proxy_shadowsocks_2022_config_proto_rawDescData return file_proxy_shadowsocks_2022_config_proto_rawDescData
} }
var file_proxy_shadowsocks_2022_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2) var file_proxy_shadowsocks_2022_config_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
var file_proxy_shadowsocks_2022_config_proto_goTypes = []interface{}{ var file_proxy_shadowsocks_2022_config_proto_goTypes = []interface{}{
(*ServerConfig)(nil), // 0: xray.proxy.shadowsocks_2022.ServerConfig (*ServerConfig)(nil), // 0: xray.proxy.shadowsocks_2022.ServerConfig
(*ClientConfig)(nil), // 1: xray.proxy.shadowsocks_2022.ClientConfig (*MultiUserServerConfig)(nil), // 1: xray.proxy.shadowsocks_2022.MultiUserServerConfig
(net.Network)(0), // 2: xray.common.net.Network (*User)(nil), // 2: xray.proxy.shadowsocks_2022.User
(*net.IPOrDomain)(nil), // 3: xray.common.net.IPOrDomain (*ClientConfig)(nil), // 3: xray.proxy.shadowsocks_2022.ClientConfig
(net.Network)(0), // 4: xray.common.net.Network
(*net.IPOrDomain)(nil), // 5: xray.common.net.IPOrDomain
} }
var file_proxy_shadowsocks_2022_config_proto_depIdxs = []int32{ var file_proxy_shadowsocks_2022_config_proto_depIdxs = []int32{
2, // 0: xray.proxy.shadowsocks_2022.ServerConfig.network:type_name -> xray.common.net.Network 4, // 0: xray.proxy.shadowsocks_2022.ServerConfig.network:type_name -> xray.common.net.Network
3, // 1: xray.proxy.shadowsocks_2022.ClientConfig.address:type_name -> xray.common.net.IPOrDomain 2, // 1: xray.proxy.shadowsocks_2022.MultiUserServerConfig.users:type_name -> xray.proxy.shadowsocks_2022.User
2, // [2:2] is the sub-list for method output_type 4, // 2: xray.proxy.shadowsocks_2022.MultiUserServerConfig.network:type_name -> xray.common.net.Network
2, // [2:2] is the sub-list for method input_type 5, // 3: xray.proxy.shadowsocks_2022.ClientConfig.address:type_name -> xray.common.net.IPOrDomain
2, // [2:2] is the sub-list for extension type_name 4, // [4:4] is the sub-list for method output_type
2, // [2:2] is the sub-list for extension extendee 4, // [4:4] is the sub-list for method input_type
0, // [0:2] is the sub-list for field type_name 4, // [4:4] is the sub-list for extension type_name
4, // [4:4] is the sub-list for extension extendee
0, // [0:4] is the sub-list for field type_name
} }
func init() { file_proxy_shadowsocks_2022_config_proto_init() } func init() { file_proxy_shadowsocks_2022_config_proto_init() }
@ -250,6 +404,30 @@ func file_proxy_shadowsocks_2022_config_proto_init() {
} }
} }
file_proxy_shadowsocks_2022_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { file_proxy_shadowsocks_2022_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*MultiUserServerConfig); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_proxy_shadowsocks_2022_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*User); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_proxy_shadowsocks_2022_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*ClientConfig); i { switch v := v.(*ClientConfig); i {
case 0: case 0:
return &v.state return &v.state
@ -268,7 +446,7 @@ func file_proxy_shadowsocks_2022_config_proto_init() {
GoPackagePath: reflect.TypeOf(x{}).PkgPath(), GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_proxy_shadowsocks_2022_config_proto_rawDesc, RawDescriptor: file_proxy_shadowsocks_2022_config_proto_rawDesc,
NumEnums: 0, NumEnums: 0,
NumMessages: 2, NumMessages: 4,
NumExtensions: 0, NumExtensions: 0,
NumServices: 0, NumServices: 0,
}, },

View File

@ -12,7 +12,20 @@ import "common/net/address.proto";
message ServerConfig { message ServerConfig {
string method = 1; string method = 1;
string key = 2; string key = 2;
repeated xray.common.net.Network network = 3; string email = 3;
repeated xray.common.net.Network network = 4;
}
message MultiUserServerConfig {
string method = 1;
string key = 2;
repeated User users = 3;
repeated xray.common.net.Network network = 4;
}
message User {
string key = 1;
string email = 2;
} }
message ClientConfig { message ClientConfig {

View File

@ -30,6 +30,7 @@ func init() {
type Inbound struct { type Inbound struct {
networks []net.Network networks []net.Network
service shadowsocks.Service service shadowsocks.Service
email string
} }
func NewServer(ctx context.Context, config *ServerConfig) (*Inbound, error) { func NewServer(ctx context.Context, config *ServerConfig) (*Inbound, error) {
@ -42,6 +43,7 @@ func NewServer(ctx context.Context, config *ServerConfig) (*Inbound, error) {
} }
inbound := &Inbound{ inbound := &Inbound{
networks: networks, networks: networks,
email: config.Email,
} }
if !C.Contains(shadowaead_2022.List, config.Method) { if !C.Contains(shadowaead_2022.List, config.Method) {
return nil, newError("unsupported method ", config.Method) return nil, newError("unsupported method ", config.Method)
@ -103,6 +105,7 @@ func (i *Inbound) NewConnection(ctx context.Context, conn net.Conn, metadata M.M
From: metadata.Source, From: metadata.Source,
To: metadata.Destination, To: metadata.Destination,
Status: log.AccessAccepted, Status: log.AccessAccepted,
Email: i.email,
}) })
newError("tunnelling request to tcp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx)) newError("tunnelling request to tcp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
dispatcher := session.DispatcherFromContext(ctx) dispatcher := session.DispatcherFromContext(ctx)
@ -123,6 +126,7 @@ func (i *Inbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, me
From: metadata.Source, From: metadata.Source,
To: metadata.Destination, To: metadata.Destination,
Status: log.AccessAccepted, Status: log.AccessAccepted,
Email: i.email,
}) })
newError("tunnelling request to udp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx)) newError("tunnelling request to udp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
dispatcher := session.DispatcherFromContext(ctx) dispatcher := session.DispatcherFromContext(ctx)

View File

@ -0,0 +1,161 @@
package shadowsocks_2022
import (
"context"
"encoding/base64"
B "github.com/sagernet/sing/common/buf"
"github.com/sagernet/sing/common/bufio"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
"github.com/sagernet/sing/common/random"
"github.com/sagernet/sing/protocol/shadowsocks"
"github.com/sagernet/sing/protocol/shadowsocks/shadowaead_2022"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/buf"
"github.com/xtls/xray-core/common/log"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/common/uuid"
"github.com/xtls/xray-core/features/routing"
"github.com/xtls/xray-core/transport/internet/stat"
)
func init() {
common.Must(common.RegisterConfig((*MultiUserServerConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return NewMultiServer(ctx, config.(*MultiUserServerConfig))
}))
}
type MultiUserInbound struct {
networks []net.Network
service *shadowaead_2022.MultiService[string]
}
func NewMultiServer(ctx context.Context, config *MultiUserServerConfig) (*MultiUserInbound, error) {
networks := config.Network
if len(networks) == 0 {
networks = []net.Network{
net.Network_TCP,
net.Network_UDP,
}
}
inbound := &MultiUserInbound{
networks: networks,
}
if config.Key == "" {
return nil, newError("missing key")
}
psk, err := base64.StdEncoding.DecodeString(config.Key)
if err != nil {
return nil, newError("parse config").Base(err)
}
service, err := shadowaead_2022.NewMultiService[string](config.Method, psk, random.Default, 500, inbound)
if err != nil {
return nil, newError("create service").Base(err)
}
for _, user := range config.Users {
if user.Email == "" {
u := uuid.New()
user.Email = "(user with empty email - " + u.String() + ")"
}
uPsk, err := base64.StdEncoding.DecodeString(user.Key)
if err != nil {
return nil, newError("parse user key for ", user.Email).Base(err)
}
err = service.AddUser(user.Email, uPsk)
if err != nil {
return nil, newError("add user").Base(err)
}
}
inbound.service = service
return inbound, nil
}
func (i *MultiUserInbound) Network() []net.Network {
return i.networks
}
func (i *MultiUserInbound) Process(ctx context.Context, network net.Network, connection stat.Connection, dispatcher routing.Dispatcher) error {
inbound := session.InboundFromContext(ctx)
if inbound == nil {
panic("no inbound metadata")
}
var metadata M.Metadata
if inbound.Source.IsValid() {
metadata.Source = M.ParseSocksaddr(inbound.Source.NetAddr())
}
ctx = session.ContextWithDispatcher(ctx, dispatcher)
if network == net.Network_TCP {
return i.service.NewConnection(ctx, connection, metadata)
} else {
reader := buf.NewReader(connection)
pc := &natPacketConn{connection}
for {
mb, err := reader.ReadMultiBuffer()
if err != nil {
return err
}
for _, buffer := range mb {
err = i.service.NewPacket(ctx, pc, B.As(buffer.Bytes()), metadata)
if err != nil {
return err
}
}
}
}
}
func (i *MultiUserInbound) NewConnection(ctx context.Context, conn net.Conn, metadata M.Metadata) error {
userCtx := ctx.(*shadowsocks.UserContext[string])
ctx = log.ContextWithAccessMessage(userCtx.Context, &log.AccessMessage{
From: metadata.Source,
To: metadata.Destination,
Status: log.AccessAccepted,
Email: userCtx.User,
})
newError("tunnelling request to tcp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
dispatcher := session.DispatcherFromContext(ctx)
link, err := dispatcher.Dispatch(ctx, toDestination(metadata.Destination, net.Network_TCP))
if err != nil {
return err
}
outConn := &pipeConnWrapper{
&buf.BufferedReader{Reader: link.Reader},
link.Writer,
conn,
}
return bufio.CopyConn(ctx, conn, outConn)
}
func (i *MultiUserInbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
userCtx := ctx.(*shadowsocks.UserContext[string])
ctx = log.ContextWithAccessMessage(userCtx.Context, &log.AccessMessage{
From: metadata.Source,
To: metadata.Destination,
Status: log.AccessAccepted,
Email: userCtx.User,
})
newError("tunnelling request to udp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
dispatcher := session.DispatcherFromContext(ctx)
destination := toDestination(metadata.Destination, net.Network_UDP)
link, err := dispatcher.Dispatch(ctx, destination)
if err != nil {
return err
}
outConn := &packetConnWrapper{
Reader: link.Reader,
Writer: link.Writer,
Dest: destination,
}
return bufio.CopyPacketConn(ctx, conn, outConn)
}
func (i *MultiUserInbound) HandleError(err error) {
newError(err).AtWarning().WriteToLog()
}