func (this *VMessOutboundHandler) Dispatch(target v2net.Destination, payload *alloc.Buffer, ray ray.OutboundRay) error {
defer ray.OutboundInput().Release()
defer ray.OutboundOutput().Close()
var rec *protocol.ServerSpec
var conn internet.Connection
err := retry.Timed(5, 100).On(func() error {
rec = this.serverPicker.PickServer()
rawConn, err := internet.Dial(this.meta.Address, rec.Destination(), this.meta.StreamSettings)
if err != nil {
return err
}
conn = rawConn
return nil
})
if err != nil {
log.Error("VMess|Outbound: Failed to find an available destination:", err)
return err
}
log.Info("VMess|Outbound: Tunneling request to ", target, " via ", rec.Destination())
command := protocol.RequestCommandTCP
if target.IsUDP() {
command = protocol.RequestCommandUDP
}
request := &protocol.RequestHeader{
Version: encoding.Version,
User: rec.PickUser(),
Command: command,
Address: target.Address(),
Port: target.Port(),
Option: protocol.RequestOptionChunkStream,
}
defer conn.Close()
conn.SetReusable(true)
if conn.Reusable() { // Conn reuse may be disabled on transportation layer
request.Option.Set(protocol.RequestOptionConnectionReuse)
}
input := ray.OutboundInput()
output := ray.OutboundOutput()
var requestFinish, responseFinish sync.Mutex
requestFinish.Lock()
responseFinish.Lock()
session := encoding.NewClientSession(protocol.DefaultIDHash)
go this.handleRequest(session, conn, request, payload, input, &requestFinish)
go this.handleResponse(session, conn, request, rec.Destination(), output, &responseFinish)
requestFinish.Lock()
responseFinish.Lock()
return nil
}
func (v *VMessInboundHandler) Process(ctx context.Context, network net.Network, connection internet.Connection) error {
connReader := net.NewTimeOutReader(8, connection)
reader := bufio.NewReader(connReader)
session := encoding.NewServerSession(v.clients)
request, err := session.DecodeRequestHeader(reader)
if err != nil {
if errors.Cause(err) != io.EOF {
log.Access(connection.RemoteAddr(), "", log.AccessRejected, err)
log.Info("VMess|Inbound: Invalid request from ", connection.RemoteAddr(), ": ", err)
}
connection.SetReusable(false)
return err
}
log.Access(connection.RemoteAddr(), request.Destination(), log.AccessAccepted, "")
log.Info("VMess|Inbound: Received request for ", request.Destination())
connection.SetReusable(request.Option.Has(protocol.RequestOptionConnectionReuse))
ctx = proxy.ContextWithDestination(ctx, request.Destination())
ctx = protocol.ContextWithUser(ctx, request.User)
ray := v.packetDispatcher.DispatchToOutbound(ctx)
input := ray.InboundInput()
output := ray.InboundOutput()
userSettings := request.User.GetSettings()
connReader.SetTimeOut(userSettings.PayloadReadTimeout)
reader.SetBuffered(false)
requestDone := signal.ExecuteAsync(func() error {
return transferRequest(session, request, reader, input)
})
writer := bufio.NewWriter(connection)
response := &protocol.ResponseHeader{
Command: v.generateCommand(ctx, request),
}
if connection.Reusable() {
response.Option.Set(protocol.ResponseOptionConnectionReuse)
}
responseDone := signal.ExecuteAsync(func() error {
return transferResponse(session, request, response, output, writer)
})
if err := signal.ErrorOrFinish2(requestDone, responseDone); err != nil {
log.Info("VMess|Inbound: Connection ending with ", err)
connection.SetReusable(false)
input.CloseError()
output.CloseError()
return err
}
if err := writer.Flush(); err != nil {
log.Info("VMess|Inbound: Failed to flush remain data: ", err)
connection.SetReusable(false)
return err
}
return nil
}
func (this *VMessInboundHandler) HandleConnection(connection internet.Connection) {
defer connection.Close()
if !this.accepting {
return
}
connReader := v2net.NewTimeOutReader(8, connection)
defer connReader.Release()
reader := v2io.NewBufferedReader(connReader)
defer reader.Release()
this.RLock()
if !this.accepting {
this.RUnlock()
return
}
session := encoding.NewServerSession(this.clients)
defer session.Release()
request, err := session.DecodeRequestHeader(reader)
this.RUnlock()
if err != nil {
if err != io.EOF {
log.Access(connection.RemoteAddr(), "", log.AccessRejected, err)
log.Warning("VMessIn: Invalid request from ", connection.RemoteAddr(), ": ", err)
}
connection.SetReusable(false)
return
}
log.Access(connection.RemoteAddr(), request.Destination(), log.AccessAccepted, "")
log.Info("VMessIn: Received request for ", request.Destination())
connection.SetReusable(request.Option.Has(protocol.RequestOptionConnectionReuse))
ray := this.packetDispatcher.DispatchToOutbound(this.meta, &proxy.SessionInfo{
Source: v2net.DestinationFromAddr(connection.RemoteAddr()),
Destination: request.Destination(),
})
input := ray.InboundInput()
output := ray.InboundOutput()
defer input.Close()
defer output.Release()
var readFinish sync.Mutex
readFinish.Lock()
userSettings := protocol.GetUserSettings(request.User.Level)
connReader.SetTimeOut(userSettings.PayloadReadTimeout)
reader.SetCached(false)
go func() {
bodyReader := session.DecodeRequestBody(reader)
var requestReader v2io.Reader
if request.Option.Has(protocol.RequestOptionChunkStream) {
requestReader = vmessio.NewAuthChunkReader(bodyReader)
} else {
requestReader = v2io.NewAdaptiveReader(bodyReader)
}
err := v2io.Pipe(requestReader, input)
if err != io.EOF {
connection.SetReusable(false)
}
requestReader.Release()
input.Close()
readFinish.Unlock()
}()
writer := v2io.NewBufferedWriter(connection)
defer writer.Release()
response := &protocol.ResponseHeader{
Command: this.generateCommand(request),
}
if connection.Reusable() {
response.Option.Set(protocol.ResponseOptionConnectionReuse)
}
session.EncodeResponseHeader(response, writer)
bodyWriter := session.EncodeResponseBody(writer)
var v2writer v2io.Writer = v2io.NewAdaptiveWriter(bodyWriter)
if request.Option.Has(protocol.RequestOptionChunkStream) {
v2writer = vmessio.NewAuthChunkWriter(v2writer)
}
// Optimize for small response packet
if data, err := output.Read(); err == nil {
if err := v2writer.Write(data); err != nil {
connection.SetReusable(false)
}
writer.SetCached(false)
err = v2io.Pipe(output, v2writer)
if err != io.EOF {
connection.SetReusable(false)
}
}
output.Release()
if request.Option.Has(protocol.RequestOptionChunkStream) {
if err := v2writer.Write(alloc.NewLocalBuffer(32).Clear()); err != nil {
connection.SetReusable(false)
}
}
writer.Flush()
v2writer.Release()
readFinish.Lock()
}
func (v *VMessOutboundHandler) Dispatch(target v2net.Destination, payload *buf.Buffer, ray ray.OutboundRay) {
defer ray.OutboundInput().Release()
defer ray.OutboundOutput().Close()
var rec *protocol.ServerSpec
var conn internet.Connection
err := retry.ExponentialBackoff(5, 100).On(func() error {
rec = v.serverPicker.PickServer()
rawConn, err := internet.Dial(v.meta.Address, rec.Destination(), v.meta.GetDialerOptions())
if err != nil {
return err
}
conn = rawConn
return nil
})
if err != nil {
log.Warning("VMess|Outbound: Failed to find an available destination:", err)
return
}
log.Info("VMess|Outbound: Tunneling request to ", target, " via ", rec.Destination())
command := protocol.RequestCommandTCP
if target.Network == v2net.Network_UDP {
command = protocol.RequestCommandUDP
}
request := &protocol.RequestHeader{
Version: encoding.Version,
User: rec.PickUser(),
Command: command,
Address: target.Address,
Port: target.Port,
Option: protocol.RequestOptionChunkStream,
}
rawAccount, err := request.User.GetTypedAccount()
if err != nil {
log.Warning("VMess|Outbound: Failed to get user account: ", err)
}
account := rawAccount.(*vmess.InternalAccount)
request.Security = account.Security
defer conn.Close()
conn.SetReusable(true)
if conn.Reusable() { // Conn reuse may be disabled on transportation layer
request.Option.Set(protocol.RequestOptionConnectionReuse)
}
input := ray.OutboundInput()
output := ray.OutboundOutput()
var requestFinish, responseFinish sync.Mutex
requestFinish.Lock()
responseFinish.Lock()
session := encoding.NewClientSession(protocol.DefaultIDHash)
go v.handleRequest(session, conn, request, payload, input, &requestFinish)
go v.handleResponse(session, conn, request, rec.Destination(), output, &responseFinish)
requestFinish.Lock()
responseFinish.Lock()
return
}
// Dispatch implements OutboundHandler.Dispatch().
func (v *VMessOutboundHandler) Process(ctx context.Context, outboundRay ray.OutboundRay) error {
var rec *protocol.ServerSpec
var conn internet.Connection
dialer := proxy.DialerFromContext(ctx)
err := retry.ExponentialBackoff(5, 100).On(func() error {
rec = v.serverPicker.PickServer()
rawConn, err := dialer.Dial(ctx, rec.Destination())
if err != nil {
return err
}
conn = rawConn
return nil
})
if err != nil {
log.Warning("VMess|Outbound: Failed to find an available destination:", err)
return err
}
defer conn.Close()
target := proxy.DestinationFromContext(ctx)
log.Info("VMess|Outbound: Tunneling request to ", target, " via ", rec.Destination())
command := protocol.RequestCommandTCP
if target.Network == net.Network_UDP {
command = protocol.RequestCommandUDP
}
request := &protocol.RequestHeader{
Version: encoding.Version,
User: rec.PickUser(),
Command: command,
Address: target.Address,
Port: target.Port,
Option: protocol.RequestOptionChunkStream,
}
rawAccount, err := request.User.GetTypedAccount()
if err != nil {
log.Warning("VMess|Outbound: Failed to get user account: ", err)
return err
}
account := rawAccount.(*vmess.InternalAccount)
request.Security = account.Security
conn.SetReusable(true)
if conn.Reusable() { // Conn reuse may be disabled on transportation layer
request.Option.Set(protocol.RequestOptionConnectionReuse)
}
input := outboundRay.OutboundInput()
output := outboundRay.OutboundOutput()
session := encoding.NewClientSession(protocol.DefaultIDHash)
requestDone := signal.ExecuteAsync(func() error {
writer := bufio.NewWriter(conn)
session.EncodeRequestHeader(request, writer)
bodyWriter := session.EncodeRequestBody(request, writer)
firstPayload, err := input.ReadTimeout(time.Millisecond * 500)
if err != nil && err != ray.ErrReadTimeout {
return errors.Base(err).Message("VMess|Outbound: Failed to get first payload.")
}
if !firstPayload.IsEmpty() {
if err := bodyWriter.Write(firstPayload); err != nil {
return errors.Base(err).Message("VMess|Outbound: Failed to write first payload.")
}
firstPayload.Release()
}
writer.SetBuffered(false)
if err := buf.PipeUntilEOF(input, bodyWriter); err != nil {
return err
}
if request.Option.Has(protocol.RequestOptionChunkStream) {
if err := bodyWriter.Write(buf.NewLocal(8)); err != nil {
return err
}
}
return nil
})
responseDone := signal.ExecuteAsync(func() error {
defer output.Close()
reader := bufio.NewReader(conn)
header, err := session.DecodeResponseHeader(reader)
if err != nil {
return err
}
v.handleCommand(rec.Destination(), header.Command)
conn.SetReusable(header.Option.Has(protocol.ResponseOptionConnectionReuse))
reader.SetBuffered(false)
bodyReader := session.DecodeResponseBody(request, reader)
if err := buf.PipeUntilEOF(bodyReader, output); err != nil {
return err
}
return nil
})
if err := signal.ErrorOrFinish2(requestDone, responseDone); err != nil {
log.Info("VMess|Outbound: Connection ending with ", err)
conn.SetReusable(false)
input.CloseError()
output.CloseError()
return err
}
return nil
}