fix buffer policy settings

app/policy/config.go

@@ -25,8 +25,7 @@ func defaultPolicy() *Policy {
 			DownlinkOnly:   &Second{Value: uint32(p.Timeouts.DownlinkOnly / time.Second)},
 		},
 		Buffer: &Policy_Buffer{
-			Enabled: p.Buffer.Enabled,
-			Size:    p.Buffer.Size,
+			Connection: p.Buffer.PerConnection,
 		},
 	}
 }
@@ -71,8 +70,7 @@ func (p *Policy) ToCorePolicy() core.Policy {
 		cp.Stats.UserDownlink = p.Stats.UserDownlink
 	}
 	if p.Buffer != nil {
-		cp.Buffer.Enabled = p.Buffer.Enabled
-		cp.Buffer.Size = p.Buffer.Size
+		cp.Buffer.PerConnection = p.Buffer.Connection
 	}
 	return cp
 }

app/policy/config.pb.go

@@ -26,7 +26,7 @@ func (m *Second) Reset()         { *m = Second{} }
 func (m *Second) String() string { return proto.CompactTextString(m) }
 func (*Second) ProtoMessage()    {}
 func (*Second) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{0}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{0}
 }
 func (m *Second) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Second.Unmarshal(m, b)
@@ -66,7 +66,7 @@ func (m *Policy) Reset()         { *m = Policy{} }
 func (m *Policy) String() string { return proto.CompactTextString(m) }
 func (*Policy) ProtoMessage()    {}
 func (*Policy) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{1}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{1}
 }
 func (m *Policy) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Policy.Unmarshal(m, b)
@@ -122,7 +122,7 @@ func (m *Policy_Timeout) Reset()         { *m = Policy_Timeout{} }
 func (m *Policy_Timeout) String() string { return proto.CompactTextString(m) }
 func (*Policy_Timeout) ProtoMessage()    {}
 func (*Policy_Timeout) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{1, 0}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{1, 0}
 }
 func (m *Policy_Timeout) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Policy_Timeout.Unmarshal(m, b)
@@ -182,7 +182,7 @@ func (m *Policy_Stats) Reset()         { *m = Policy_Stats{} }
 func (m *Policy_Stats) String() string { return proto.CompactTextString(m) }
 func (*Policy_Stats) ProtoMessage()    {}
 func (*Policy_Stats) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{1, 1}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{1, 1}
 }
 func (m *Policy_Stats) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Policy_Stats.Unmarshal(m, b)
@@ -217,8 +217,8 @@ func (m *Policy_Stats) GetUserDownlink() bool {
 }
 
 type Policy_Buffer struct {
-	Enabled              bool     `protobuf:"varint,1,opt,name=enabled" json:"enabled,omitempty"`
-	Size                 uint32   `protobuf:"varint,2,opt,name=size" json:"size,omitempty"`
+	// Buffer size per connection, in bytes. -1 for unlimited buffer.
+	Connection           int32    `protobuf:"varint,1,opt,name=connection" json:"connection,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -228,7 +228,7 @@ func (m *Policy_Buffer) Reset()         { *m = Policy_Buffer{} }
 func (m *Policy_Buffer) String() string { return proto.CompactTextString(m) }
 func (*Policy_Buffer) ProtoMessage()    {}
 func (*Policy_Buffer) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{1, 2}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{1, 2}
 }
 func (m *Policy_Buffer) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Policy_Buffer.Unmarshal(m, b)
@@ -248,16 +248,9 @@ func (m *Policy_Buffer) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_Policy_Buffer proto.InternalMessageInfo
 
-func (m *Policy_Buffer) GetEnabled() bool {
+func (m *Policy_Buffer) GetConnection() int32 {
 	if m != nil {
-		return m.Enabled
-	}
-	return false
-}
-
-func (m *Policy_Buffer) GetSize() uint32 {
-	if m != nil {
-		return m.Size
+		return m.Connection
 	}
 	return 0
 }
@@ -273,7 +266,7 @@ func (m *SystemPolicy) Reset()         { *m = SystemPolicy{} }
 func (m *SystemPolicy) String() string { return proto.CompactTextString(m) }
 func (*SystemPolicy) ProtoMessage()    {}
 func (*SystemPolicy) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{2}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{2}
 }
 func (m *SystemPolicy) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_SystemPolicy.Unmarshal(m, b)
@@ -312,7 +305,7 @@ func (m *SystemPolicy_Stats) Reset()         { *m = SystemPolicy_Stats{} }
 func (m *SystemPolicy_Stats) String() string { return proto.CompactTextString(m) }
 func (*SystemPolicy_Stats) ProtoMessage()    {}
 func (*SystemPolicy_Stats) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{2, 0}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{2, 0}
 }
 func (m *SystemPolicy_Stats) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_SystemPolicy_Stats.Unmarshal(m, b)
@@ -358,7 +351,7 @@ func (m *Config) Reset()         { *m = Config{} }
 func (m *Config) String() string { return proto.CompactTextString(m) }
 func (*Config) ProtoMessage()    {}
 func (*Config) Descriptor() ([]byte, []int) {
-	return fileDescriptor_config_505638f2092d854e, []int{3}
+	return fileDescriptor_config_700aba7c9186c0c0, []int{3}
 }
 func (m *Config) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Config.Unmarshal(m, b)
@@ -405,42 +398,42 @@ func init() {
 }
 
 func init() {
-	proto.RegisterFile("v2ray.com/core/app/policy/config.proto", fileDescriptor_config_505638f2092d854e)
-}
-
-var fileDescriptor_config_505638f2092d854e = []byte{
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-	0x00, 0xff, 0xff, 0x2c, 0x2e, 0xe6, 0xcf, 0x95, 0x04, 0x00, 0x00,
+	proto.RegisterFile("v2ray.com/core/app/policy/config.proto", fileDescriptor_config_700aba7c9186c0c0)
+}
+
+var fileDescriptor_config_700aba7c9186c0c0 = []byte{
+	// 513 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x94, 0xdb, 0x6a, 0x13, 0x41,
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+	0x00,
 }

app/policy/config.proto

@@ -25,8 +25,8 @@ message Policy {
   }
 
   message Buffer {
-    bool enabled = 1;
-    uint32 size = 2;
+    // Buffer size per connection, in bytes. -1 for unlimited buffer.
+    int32 connection = 1;
   }
 
   Timeout timeout = 1;

policy.go

@@ -31,10 +31,8 @@ type StatsPolicy struct {
 
 // BufferPolicy contains settings for internal buffer.
 type BufferPolicy struct {
-	// Whether or not to enable internal buffer.
-	Enabled bool
-	// Size of internal buffer, in bytes.
-	Size uint32
+	// Size of buffer per connection, in bytes. -1 for unlimited buffer.
+	PerConnection int32
 }
 
 type SystemStatsPolicy struct {
@@ -67,7 +65,7 @@ type PolicyManager interface {
 	ForSystem() SystemPolicy
 }
 
-var defaultBufferSize uint32 = 10 * 1024 * 1024
+var defaultBufferSize int32 = 10 * 1024 * 1024
 
 func init() {
 	const key = "v2ray.ray.buffer.size"
@@ -76,16 +74,15 @@ func init() {
 		AltName: platform.NormalizeEnvName(key),
 	}.GetValueAsInt(10)
 	if size == 0 {
-		defaultBufferSize = 2147483647
+		defaultBufferSize = -1
 	} else {
-		defaultBufferSize = uint32(size) * 1024 * 1024
+		defaultBufferSize = int32(size) * 1024 * 1024
 	}
 }
 
 func defaultBufferPolicy() BufferPolicy {
 	return BufferPolicy{
-		Enabled: true,
-		Size:    defaultBufferSize,
+		PerConnection: defaultBufferSize,
 	}
 }
 

testing/scenarios/policy_test.go

@@ -194,7 +194,7 @@ func TestZeroBuffer(t *testing.T) {
 							DownlinkOnly: &policy.Second{Value: 0},
 						},
 						Buffer: &policy.Policy_Buffer{
-							Enabled: false,
+							Connection: 0,
 						},
 					},
 				},

transport/pipe/pipe.go

@@ -25,8 +25,8 @@ func OptionsFromContext(ctx context.Context) []Option {
 	var opt []Option
 
 	bp := core.BufferPolicyFromContext(ctx)
-	if bp.Enabled {
-		opt = append(opt, WithSizeLimit(int32(bp.Size)))
+	if bp.PerConnection >= 0 {
+		opt = append(opt, WithSizeLimit(bp.PerConnection))
 	} else {
 		opt = append(opt, WithoutSizeLimit())
 	}
@@ -37,7 +37,7 @@ func OptionsFromContext(ctx context.Context) []Option {
 // New creates a new Reader and Writer that connects to each other.
 func New(opts ...Option) (*Reader, *Writer) {
 	p := &pipe{
-		limit:       0,
+		limit:       -1,
 		readSignal:  signal.NewNotifier(),
 		writeSignal: signal.NewNotifier(),
 	}