Golang VMessRequest.IsChunkStream方法代码示例

func (this *VMessOutboundHandler) handleRequest(conn net.Conn, request *protocol.VMessRequest, firstPacket v2net.Packet, input <-chan *alloc.Buffer, finish *sync.Mutex) {
	defer finish.Unlock()
	aesStream, err := v2crypto.NewAesEncryptionStream(request.RequestKey[:], request.RequestIV[:])
	if err != nil {
		log.Error("VMessOut: Failed to create AES encryption stream: ", err)
		return
	}
	encryptRequestWriter := v2crypto.NewCryptionWriter(aesStream, conn)

	buffer := alloc.NewBuffer().Clear()
	defer buffer.Release()
	buffer, err = request.ToBytes(protocol.NewRandomTimestampGenerator(protocol.Timestamp(time.Now().Unix()), 30), buffer)
	if err != nil {
		log.Error("VMessOut: Failed to serialize VMess request: ", err)
		return
	}

	// Send first packet of payload together with request, in favor of small requests.
	firstChunk := firstPacket.Chunk()
	moreChunks := firstPacket.MoreChunks()

	for firstChunk == nil && moreChunks {
		firstChunk, moreChunks = <-input
	}

	if firstChunk == nil && !moreChunks {
		log.Warning("VMessOut: Nothing to send. Existing...")
		return
	}

	if request.IsChunkStream() {
		vmessio.Authenticate(firstChunk)
	}

	aesStream.XORKeyStream(firstChunk.Value, firstChunk.Value)
	buffer.Append(firstChunk.Value)
	firstChunk.Release()

	_, err = conn.Write(buffer.Value)
	if err != nil {
		log.Error("VMessOut: Failed to write VMess request: ", err)
		return
	}

	if moreChunks {
		var streamWriter v2io.Writer
		streamWriter = v2io.NewAdaptiveWriter(encryptRequestWriter)
		if request.IsChunkStream() {
			streamWriter = vmessio.NewAuthChunkWriter(streamWriter)
		}
		v2io.ChanToWriter(streamWriter, input)
	}
	return
}

func (this *VMessOutboundHandler) handleResponse(conn net.Conn, request *protocol.VMessRequest, dest v2net.Destination, output chan<- *alloc.Buffer, finish *sync.Mutex) {
	defer finish.Unlock()
	defer close(output)
	responseKey := md5.Sum(request.RequestKey[:])
	responseIV := md5.Sum(request.RequestIV[:])

	aesStream, err := v2crypto.NewAesDecryptionStream(responseKey[:], responseIV[:])
	if err != nil {
		log.Error("VMessOut: Failed to create AES encryption stream: ", err)
		return
	}
	decryptResponseReader := v2crypto.NewCryptionReader(aesStream, conn)

	buffer := alloc.NewSmallBuffer()
	defer buffer.Release()
	_, err = io.ReadFull(decryptResponseReader, buffer.Value[:4])

	if err != nil {
		log.Error("VMessOut: Failed to read VMess response (", buffer.Len(), " bytes): ", err)
		return
	}
	if !headerMatch(request, buffer.Value[0]) {
		log.Warning("VMessOut: unexepcted response header. The connection is probably hijacked.")
		return
	}

	if buffer.Value[2] != 0 {
		command := buffer.Value[2]
		dataLen := int(buffer.Value[3])
		_, err := io.ReadFull(decryptResponseReader, buffer.Value[:dataLen])
		if err != nil {
			log.Error("VMessOut: Failed to read response command: ", err)
			return
		}
		data := buffer.Value[:dataLen]
		go this.handleCommand(dest, command, data)
	}

	var reader v2io.Reader
	if request.IsChunkStream() {
		reader = vmessio.NewAuthChunkReader(decryptResponseReader)
	} else {
		reader = v2io.NewAdaptiveReader(decryptResponseReader)
	}

	v2io.ReaderToChan(output, reader)

	return
}

func handleInput(request *protocol.VMessRequest, reader io.Reader, input chan<- *alloc.Buffer, finish *sync.Mutex) {
	defer close(input)
	defer finish.Unlock()

	aesStream, err := v2crypto.NewAesDecryptionStream(request.RequestKey, request.RequestIV)
	if err != nil {
		log.Error("VMessIn: Failed to create AES decryption stream: ", err)
		return
	}
	descriptionReader := v2crypto.NewCryptionReader(aesStream, reader)
	var requestReader v2io.Reader
	if request.IsChunkStream() {
		requestReader = vmessio.NewAuthChunkReader(descriptionReader)
	} else {
		requestReader = v2io.NewAdaptiveReader(descriptionReader)
	}
	v2io.ReaderToChan(input, requestReader)
}