func (this *Server) handleConnection(conn internet.Connection) {
defer conn.Close()
buffer := alloc.NewSmallBuffer()
defer buffer.Release()
timedReader := v2net.NewTimeOutReader(16, conn)
defer timedReader.Release()
bufferedReader := v2io.NewBufferedReader(timedReader)
defer bufferedReader.Release()
ivLen := this.config.Cipher.IVSize()
_, err := io.ReadFull(bufferedReader, buffer.Value[:ivLen])
if err != nil {
if err != io.EOF {
log.Access(conn.RemoteAddr(), "", log.AccessRejected, err)
log.Warning("Shadowsocks: Failed to read IV: ", err)
}
return
}
iv := buffer.Value[:ivLen]
key := this.config.Key
stream, err := this.config.Cipher.NewDecodingStream(key, iv)
if err != nil {
log.Error("Shadowsocks: Failed to create decoding stream: ", err)
return
}
reader := crypto.NewCryptionReader(stream, bufferedReader)
request, err := ReadRequest(reader, NewAuthenticator(HeaderKeyGenerator(key, iv)), false)
if err != nil {
log.Access(conn.RemoteAddr(), "", log.AccessRejected, err)
log.Warning("Shadowsocks: Invalid request from ", conn.RemoteAddr(), ": ", err)
return
}
defer request.Release()
bufferedReader.SetCached(false)
userSettings := protocol.GetUserSettings(this.config.Level)
timedReader.SetTimeOut(userSettings.PayloadReadTimeout)
dest := v2net.TCPDestination(request.Address, request.Port)
log.Access(conn.RemoteAddr(), dest, log.AccessAccepted, "")
log.Info("Shadowsocks: Tunnelling request to ", dest)
ray := this.packetDispatcher.DispatchToOutbound(dest)
defer ray.InboundOutput().Release()
var writeFinish sync.Mutex
writeFinish.Lock()
go func() {
if payload, err := ray.InboundOutput().Read(); err == nil {
payload.SliceBack(ivLen)
rand.Read(payload.Value[:ivLen])
stream, err := this.config.Cipher.NewEncodingStream(key, payload.Value[:ivLen])
if err != nil {
log.Error("Shadowsocks: Failed to create encoding stream: ", err)
return
}
stream.XORKeyStream(payload.Value[ivLen:], payload.Value[ivLen:])
conn.Write(payload.Value)
payload.Release()
writer := crypto.NewCryptionWriter(stream, conn)
v2writer := v2io.NewAdaptiveWriter(writer)
v2io.Pipe(ray.InboundOutput(), v2writer)
writer.Release()
v2writer.Release()
}
writeFinish.Unlock()
}()
var payloadReader v2io.Reader
if request.OTA {
payloadAuth := NewAuthenticator(ChunkKeyGenerator(iv))
payloadReader = NewChunkReader(reader, payloadAuth)
} else {
payloadReader = v2io.NewAdaptiveReader(reader)
}
v2io.Pipe(payloadReader, ray.InboundInput())
ray.InboundInput().Close()
payloadReader.Release()
writeFinish.Lock()
}
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 := raw.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(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.NewSmallBuffer().Clear()); err != nil {
connection.SetReusable(false)
}
}
v2writer.Release()
readFinish.Lock()
}
func (this *VMessInboundHandler) HandleConnection(connection *hub.TCPConn) {
defer connection.Close()
connReader := v2net.NewTimeOutReader(16, connection)
reader := v2io.NewBufferedReader(connReader)
session := raw.NewServerSession(this.clients)
request, err := session.DecodeRequestHeader(reader)
if err != nil {
log.Access(connection.RemoteAddr(), serial.StringLiteral(""), log.AccessRejected, serial.StringLiteral(err.Error()))
log.Warning("VMessIn: Invalid request from ", connection.RemoteAddr(), ": ", err)
return
}
log.Access(connection.RemoteAddr(), request.Destination(), log.AccessAccepted, serial.StringLiteral(""))
log.Debug("VMessIn: Received request for ", request.Destination())
ray := this.packetDispatcher.DispatchToOutbound(v2net.NewPacket(request.Destination(), nil, true))
input := ray.InboundInput()
output := ray.InboundOutput()
var readFinish, writeFinish sync.Mutex
readFinish.Lock()
writeFinish.Lock()
userSettings := proto.GetUserSettings(request.User.Level)
connReader.SetTimeOut(userSettings.PayloadReadTimeout)
reader.SetCached(false)
go func() {
defer close(input)
defer readFinish.Unlock()
bodyReader := session.DecodeRequestBody(reader)
var requestReader v2io.Reader
if request.Option.IsChunkStream() {
requestReader = vmessio.NewAuthChunkReader(bodyReader)
} else {
requestReader = v2io.NewAdaptiveReader(bodyReader)
}
v2io.ReaderToChan(input, requestReader)
}()
writer := v2io.NewBufferedWriter(connection)
response := &proto.ResponseHeader{
Command: this.generateCommand(request),
}
session.EncodeResponseHeader(response, writer)
bodyWriter := session.EncodeResponseBody(writer)
// Optimize for small response packet
if data, open := <-output; open {
if request.Option.IsChunkStream() {
vmessio.Authenticate(data)
}
bodyWriter.Write(data.Value)
data.Release()
writer.SetCached(false)
go func(finish *sync.Mutex) {
var writer v2io.Writer = v2io.NewAdaptiveWriter(bodyWriter)
if request.Option.IsChunkStream() {
writer = vmessio.NewAuthChunkWriter(writer)
}
v2io.ChanToWriter(writer, output)
finish.Unlock()
}(&writeFinish)
writeFinish.Lock()
}
connection.CloseWrite()
readFinish.Lock()
}
func (this *Shadowsocks) handleConnection(conn *hub.TCPConn) {
defer conn.Close()
buffer := alloc.NewSmallBuffer()
defer buffer.Release()
timedReader := v2net.NewTimeOutReader(16, conn)
_, err := io.ReadFull(timedReader, buffer.Value[:this.config.Cipher.IVSize()])
if err != nil {
log.Access(conn.RemoteAddr(), serial.StringLiteral(""), log.AccessRejected, serial.StringLiteral(err.Error()))
log.Error("Shadowsocks: Failed to read IV: ", err)
return
}
iv := buffer.Value[:this.config.Cipher.IVSize()]
key := this.config.Key
reader, err := this.config.Cipher.NewDecodingStream(key, iv, timedReader)
if err != nil {
log.Error("Shadowsocks: Failed to create decoding stream: ", err)
return
}
request, err := ReadRequest(reader, NewAuthenticator(HeaderKeyGenerator(iv, key)), false)
if err != nil {
log.Access(conn.RemoteAddr(), serial.StringLiteral(""), log.AccessRejected, serial.StringLiteral(err.Error()))
log.Warning("Shadowsocks: Invalid request from ", conn.RemoteAddr(), ": ", err)
return
}
userSettings := protocol.GetUserSettings(this.config.Level)
timedReader.SetTimeOut(userSettings.PayloadReadTimeout)
dest := v2net.TCPDestination(request.Address, request.Port)
log.Access(conn.RemoteAddr(), dest, log.AccessAccepted, serial.StringLiteral(""))
log.Info("Shadowsocks: Tunnelling request to ", dest)
packet := v2net.NewPacket(dest, nil, true)
ray := this.packetDispatcher.DispatchToOutbound(packet)
var writeFinish sync.Mutex
writeFinish.Lock()
go func() {
if payload, ok := <-ray.InboundOutput(); ok {
payload.SliceBack(16)
rand.Read(payload.Value[:16])
writer, err := this.config.Cipher.NewEncodingStream(key, payload.Value[:16], conn)
if err != nil {
log.Error("Shadowsocks: Failed to create encoding stream: ", err)
return
}
writer.Write(payload.Value)
payload.Release()
v2io.ChanToRawWriter(writer, ray.InboundOutput())
}
writeFinish.Unlock()
}()
var payloadReader v2io.Reader
if request.OTA {
payloadAuth := NewAuthenticator(ChunkKeyGenerator(iv))
payloadReader = NewChunkReader(reader, payloadAuth)
} else {
payloadReader = v2io.NewAdaptiveReader(reader)
}
v2io.ReaderToChan(ray.InboundInput(), payloadReader)
close(ray.InboundInput())
writeFinish.Lock()
}
func (this *VMessInboundHandler) HandleConnection(connection *hub.TCPConn) {
defer connection.Close()
connReader := v2net.NewTimeOutReader(16, connection)
requestReader := protocol.NewVMessRequestReader(this.clients)
request, err := requestReader.Read(connReader)
if err != nil {
log.Access(connection.RemoteAddr(), serial.StringLiteral(""), log.AccessRejected, serial.StringLiteral(err.Error()))
log.Warning("VMessIn: Invalid request from ", connection.RemoteAddr(), ": ", err)
return
}
log.Access(connection.RemoteAddr(), request.Address, log.AccessAccepted, serial.StringLiteral(""))
log.Debug("VMessIn: Received request for ", request.Address)
ray := this.packetDispatcher.DispatchToOutbound(v2net.NewPacket(request.Destination(), nil, true))
input := ray.InboundInput()
output := ray.InboundOutput()
var readFinish, writeFinish sync.Mutex
readFinish.Lock()
writeFinish.Lock()
userSettings := proto.GetUserSettings(request.User.Level)
connReader.SetTimeOut(userSettings.PayloadReadTimeout)
go handleInput(request, connReader, input, &readFinish)
responseKey := md5.Sum(request.RequestKey)
responseIV := md5.Sum(request.RequestIV)
aesStream, err := v2crypto.NewAesEncryptionStream(responseKey[:], responseIV[:])
if err != nil {
log.Error("VMessIn: Failed to create AES decryption stream: ", err)
close(input)
return
}
responseWriter := v2crypto.NewCryptionWriter(aesStream, connection)
// Optimize for small response packet
buffer := alloc.NewLargeBuffer().Clear()
defer buffer.Release()
buffer.AppendBytes(request.ResponseHeader, byte(0))
this.generateCommand(buffer)
if data, open := <-output; open {
if request.IsChunkStream() {
vmessio.Authenticate(data)
}
buffer.Append(data.Value)
data.Release()
responseWriter.Write(buffer.Value)
go func(finish *sync.Mutex) {
var writer v2io.Writer = v2io.NewAdaptiveWriter(responseWriter)
if request.IsChunkStream() {
writer = vmessio.NewAuthChunkWriter(writer)
}
v2io.ChanToWriter(writer, output)
finish.Unlock()
}(&writeFinish)
writeFinish.Lock()
}
connection.CloseWrite()
readFinish.Lock()
}