mirror of
https://github.com/XTLS/Xray-core.git
synced 2025-04-30 01:08:33 +00:00
Added tcp fragmentation for freedom outbound (#2021)
* Added tcp fragmentation for freedom outbound * Added TCP_NODELAY to outbound sockopt * Changed fragment parameters to accept ranges and changed strategy to use length * Changed packetNumber to packets, supporting range. * Refactored the freedom fragment logic * Refine Write() --------- Co-authored-by: RPRX <63339210+RPRX@users.noreply.github.com>
This commit is contained in:
sambali9
GitHub
parent
c80646a045
commit
5f5ae37571
10 changed files with 392 additions and 71 deletions
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@ -70,7 +70,7 @@ func (x Config_DomainStrategy) Number() protoreflect.EnumNumber {
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// Deprecated: Use Config_DomainStrategy.Descriptor instead.
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func (Config_DomainStrategy) EnumDescriptor() ([]byte, []int) {
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return file_proxy_freedom_config_proto_rawDescGZIP(), []int{1, 0}
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return file_proxy_freedom_config_proto_rawDescGZIP(), []int{2, 0}
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}
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type DestinationOverride struct {
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@ -120,6 +120,93 @@ func (x *DestinationOverride) GetServer() *protocol.ServerEndpoint {
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return nil
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}
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type Fragment struct {
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state protoimpl.MessageState
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sizeCache protoimpl.SizeCache
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unknownFields protoimpl.UnknownFields
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MinInterval int32 `protobuf:"varint,1,opt,name=min_interval,json=minInterval,proto3" json:"min_interval,omitempty"`
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MaxInterval int32 `protobuf:"varint,2,opt,name=max_interval,json=maxInterval,proto3" json:"max_interval,omitempty"`
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MinLength int32 `protobuf:"varint,3,opt,name=min_length,json=minLength,proto3" json:"min_length,omitempty"`
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MaxLength int32 `protobuf:"varint,4,opt,name=max_length,json=maxLength,proto3" json:"max_length,omitempty"`
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StartPacket int32 `protobuf:"varint,5,opt,name=start_packet,json=startPacket,proto3" json:"start_packet,omitempty"`
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EndPacket int32 `protobuf:"varint,6,opt,name=end_packet,json=endPacket,proto3" json:"end_packet,omitempty"`
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}
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func (x *Fragment) Reset() {
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*x = Fragment{}
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if protoimpl.UnsafeEnabled {
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mi := &file_proxy_freedom_config_proto_msgTypes[1]
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ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
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ms.StoreMessageInfo(mi)
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}
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}
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func (x *Fragment) String() string {
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return protoimpl.X.MessageStringOf(x)
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}
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func (*Fragment) ProtoMessage() {}
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func (x *Fragment) ProtoReflect() protoreflect.Message {
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mi := &file_proxy_freedom_config_proto_msgTypes[1]
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if protoimpl.UnsafeEnabled && x != nil {
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ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
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if ms.LoadMessageInfo() == nil {
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ms.StoreMessageInfo(mi)
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}
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return ms
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}
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return mi.MessageOf(x)
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}
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// Deprecated: Use Fragment.ProtoReflect.Descriptor instead.
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func (*Fragment) Descriptor() ([]byte, []int) {
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return file_proxy_freedom_config_proto_rawDescGZIP(), []int{1}
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}
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func (x *Fragment) GetMinInterval() int32 {
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if x != nil {
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return x.MinInterval
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}
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return 0
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}
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func (x *Fragment) GetMaxInterval() int32 {
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if x != nil {
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return x.MaxInterval
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}
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return 0
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}
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func (x *Fragment) GetMinLength() int32 {
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if x != nil {
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return x.MinLength
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}
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return 0
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}
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func (x *Fragment) GetMaxLength() int32 {
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if x != nil {
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return x.MaxLength
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}
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return 0
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}
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func (x *Fragment) GetStartPacket() int32 {
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if x != nil {
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return x.StartPacket
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}
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return 0
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}
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func (x *Fragment) GetEndPacket() int32 {
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if x != nil {
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return x.EndPacket
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}
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return 0
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}
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type Config struct {
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state protoimpl.MessageState
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sizeCache protoimpl.SizeCache
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@ -130,12 +217,13 @@ type Config struct {
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Timeout uint32 `protobuf:"varint,2,opt,name=timeout,proto3" json:"timeout,omitempty"`
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DestinationOverride *DestinationOverride `protobuf:"bytes,3,opt,name=destination_override,json=destinationOverride,proto3" json:"destination_override,omitempty"`
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UserLevel uint32 `protobuf:"varint,4,opt,name=user_level,json=userLevel,proto3" json:"user_level,omitempty"`
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Fragment *Fragment `protobuf:"bytes,5,opt,name=fragment,proto3" json:"fragment,omitempty"`
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}
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func (x *Config) Reset() {
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*x = Config{}
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if protoimpl.UnsafeEnabled {
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mi := &file_proxy_freedom_config_proto_msgTypes[1]
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mi := &file_proxy_freedom_config_proto_msgTypes[2]
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ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
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ms.StoreMessageInfo(mi)
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}
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@ -148,7 +236,7 @@ func (x *Config) String() string {
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func (*Config) ProtoMessage() {}
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func (x *Config) ProtoReflect() protoreflect.Message {
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mi := &file_proxy_freedom_config_proto_msgTypes[1]
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mi := &file_proxy_freedom_config_proto_msgTypes[2]
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if protoimpl.UnsafeEnabled && x != nil {
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ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
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if ms.LoadMessageInfo() == nil {
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@ -161,7 +249,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {
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// Deprecated: Use Config.ProtoReflect.Descriptor instead.
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func (*Config) Descriptor() ([]byte, []int) {
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return file_proxy_freedom_config_proto_rawDescGZIP(), []int{1}
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return file_proxy_freedom_config_proto_rawDescGZIP(), []int{2}
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}
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func (x *Config) GetDomainStrategy() Config_DomainStrategy {
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@ -193,6 +281,13 @@ func (x *Config) GetUserLevel() uint32 {
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return 0
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}
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func (x *Config) GetFragment() *Fragment {
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if x != nil {
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return x.Fragment
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}
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return nil
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}
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var File_proxy_freedom_config_proto protoreflect.FileDescriptor
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var file_proxy_freedom_config_proto_rawDesc = []byte{
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@ -206,33 +301,50 @@ var file_proxy_freedom_config_proto_rawDesc = []byte{
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|
||||
0x78, 0x79, 0x2e, 0x66, 0x72, 0x65, 0x65, 0x64, 0x6f, 0x6d, 0x50, 0x01, 0x5a, 0x27, 0x67, 0x69,
|
||||
0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72,
|
||||
0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x66, 0x72,
|
||||
0x65, 0x65, 0x64, 0x6f, 0x6d, 0xaa, 0x02, 0x12, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f,
|
||||
0x78, 0x79, 0x2e, 0x46, 0x72, 0x65, 0x65, 0x64, 0x6f, 0x6d, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
|
||||
0x6f, 0x33,
|
||||
}
|
||||
|
||||
var (
|
||||
|
|
@ -248,22 +360,24 @@ func file_proxy_freedom_config_proto_rawDescGZIP() []byte {
|
|||
}
|
||||
|
||||
var file_proxy_freedom_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
|
||||
var file_proxy_freedom_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
|
||||
var file_proxy_freedom_config_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
|
||||
var file_proxy_freedom_config_proto_goTypes = []interface{}{
|
||||
(Config_DomainStrategy)(0), // 0: xray.proxy.freedom.Config.DomainStrategy
|
||||
(*DestinationOverride)(nil), // 1: xray.proxy.freedom.DestinationOverride
|
||||
(*Config)(nil), // 2: xray.proxy.freedom.Config
|
||||
(*protocol.ServerEndpoint)(nil), // 3: xray.common.protocol.ServerEndpoint
|
||||
(*Fragment)(nil), // 2: xray.proxy.freedom.Fragment
|
||||
(*Config)(nil), // 3: xray.proxy.freedom.Config
|
||||
(*protocol.ServerEndpoint)(nil), // 4: xray.common.protocol.ServerEndpoint
|
||||
}
|
||||
var file_proxy_freedom_config_proto_depIdxs = []int32{
|
||||
3, // 0: xray.proxy.freedom.DestinationOverride.server:type_name -> xray.common.protocol.ServerEndpoint
|
||||
4, // 0: xray.proxy.freedom.DestinationOverride.server:type_name -> xray.common.protocol.ServerEndpoint
|
||||
0, // 1: xray.proxy.freedom.Config.domain_strategy:type_name -> xray.proxy.freedom.Config.DomainStrategy
|
||||
1, // 2: xray.proxy.freedom.Config.destination_override:type_name -> xray.proxy.freedom.DestinationOverride
|
||||
3, // [3:3] is the sub-list for method output_type
|
||||
3, // [3:3] is the sub-list for method input_type
|
||||
3, // [3:3] is the sub-list for extension type_name
|
||||
3, // [3:3] is the sub-list for extension extendee
|
||||
0, // [0:3] is the sub-list for field type_name
|
||||
2, // 3: xray.proxy.freedom.Config.fragment:type_name -> xray.proxy.freedom.Fragment
|
||||
4, // [4:4] is the sub-list for method output_type
|
||||
4, // [4:4] is the sub-list for method input_type
|
||||
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_freedom_config_proto_init() }
|
||||
|
|
@ -285,6 +399,18 @@ func file_proxy_freedom_config_proto_init() {
|
|||
}
|
||||
}
|
||||
file_proxy_freedom_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Fragment); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
case 1:
|
||||
return &v.sizeCache
|
||||
case 2:
|
||||
return &v.unknownFields
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
file_proxy_freedom_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Config); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
|
|
@ -303,7 +429,7 @@ func file_proxy_freedom_config_proto_init() {
|
|||
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
|
||||
RawDescriptor: file_proxy_freedom_config_proto_rawDesc,
|
||||
NumEnums: 1,
|
||||
NumMessages: 2,
|
||||
NumMessages: 3,
|
||||
NumExtensions: 0,
|
||||
NumServices: 0,
|
||||
},
|
||||
|
|
|
|||
|
|
@ -12,6 +12,15 @@ message DestinationOverride {
|
|||
xray.common.protocol.ServerEndpoint server = 1;
|
||||
}
|
||||
|
||||
message Fragment {
|
||||
int32 min_interval = 1;
|
||||
int32 max_interval = 2;
|
||||
int32 min_length = 3;
|
||||
int32 max_length = 4;
|
||||
int32 start_packet = 5;
|
||||
int32 end_packet = 6;
|
||||
}
|
||||
|
||||
message Config {
|
||||
enum DomainStrategy {
|
||||
AS_IS = 0;
|
||||
|
|
@ -23,4 +32,5 @@ message Config {
|
|||
uint32 timeout = 2 [deprecated = true];
|
||||
DestinationOverride destination_override = 3;
|
||||
uint32 user_level = 4;
|
||||
Fragment fragment = 5;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -4,6 +4,9 @@ package freedom
|
|||
|
||||
import (
|
||||
"context"
|
||||
"crypto/rand"
|
||||
"io"
|
||||
"math/big"
|
||||
"time"
|
||||
|
||||
"github.com/xtls/xray-core/common"
|
||||
|
|
@ -169,7 +172,21 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
|
|||
|
||||
var writer buf.Writer
|
||||
if destination.Network == net.Network_TCP {
|
||||
writer = buf.NewWriter(conn)
|
||||
if h.config.Fragment != nil {
|
||||
writer = buf.NewWriter(
|
||||
&FragmentWriter{
|
||||
Writer: conn,
|
||||
minLength: int(h.config.Fragment.MinLength),
|
||||
maxLength: int(h.config.Fragment.MaxLength),
|
||||
minInterval: time.Duration(h.config.Fragment.MinInterval) * time.Millisecond,
|
||||
maxInterval: time.Duration(h.config.Fragment.MaxInterval) * time.Millisecond,
|
||||
startPacket: int(h.config.Fragment.StartPacket),
|
||||
endPacket: int(h.config.Fragment.EndPacket),
|
||||
PacketCount: 0,
|
||||
})
|
||||
} else {
|
||||
writer = buf.NewWriter(conn)
|
||||
}
|
||||
} else {
|
||||
writer = NewPacketWriter(conn, h, ctx, UDPOverride)
|
||||
}
|
||||
|
|
@ -324,3 +341,50 @@ func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
|
|||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type FragmentWriter struct {
|
||||
io.Writer
|
||||
minLength int
|
||||
maxLength int
|
||||
minInterval time.Duration
|
||||
maxInterval time.Duration
|
||||
startPacket int
|
||||
endPacket int
|
||||
PacketCount int
|
||||
}
|
||||
|
||||
func (w *FragmentWriter) Write(buf []byte) (int, error) {
|
||||
w.PacketCount += 1
|
||||
if (w.startPacket != 0 && (w.PacketCount < w.startPacket || w.PacketCount > w.endPacket)) || len(buf) <= w.minLength {
|
||||
return w.Writer.Write(buf)
|
||||
}
|
||||
|
||||
nTotal := 0
|
||||
for {
|
||||
randomBytesTo := int(randBetween(int64(w.minLength), int64(w.maxLength))) + nTotal
|
||||
if randomBytesTo > len(buf) {
|
||||
randomBytesTo = len(buf)
|
||||
}
|
||||
n, err := w.Writer.Write(buf[nTotal:randomBytesTo])
|
||||
if err != nil {
|
||||
return nTotal + n, err
|
||||
}
|
||||
nTotal += n
|
||||
|
||||
if nTotal >= len(buf) {
|
||||
return nTotal, nil
|
||||
}
|
||||
|
||||
randomInterval := randBetween(int64(w.minInterval), int64(w.maxInterval))
|
||||
time.Sleep(time.Duration(randomInterval))
|
||||
}
|
||||
}
|
||||
|
||||
// stolen from github.com/xtls/xray-core/transport/internet/reality
|
||||
func randBetween(left int64, right int64) int64 {
|
||||
if left == right {
|
||||
return left
|
||||
}
|
||||
bigInt, _ := rand.Int(rand.Reader, big.NewInt(right-left))
|
||||
return left + bigInt.Int64()
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue