diff --git a/Makefile b/Makefile
index a0bd848..562f978 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,11 @@
+
 build:
 	mkdir -p devbin
 	go build -o devbin/yproxy ./cmd/yproxy
-	go build -o devbin/client ./cmd/client
\ No newline at end of file
+	go build -o devbin/client ./cmd/client
+
+####################### TESTS #######################
+
+unittest:
+	go test -race ./pkg/proc/...
+
diff --git a/cmd/client/main.go b/cmd/client/main.go
index 1c2f1b6..c4dffe7 100644
--- a/cmd/client/main.go
+++ b/cmd/client/main.go
@@ -84,9 +84,26 @@ var putCmd = &cobra.Command{
 
 		ylogger.Zero.Debug().Bytes("msg", msg).Msg("constructed message")
 
-		_, err = io.Copy(os.Stdin, con)
-		if err != nil {
-			return err
+		const SZ = 65536
+		chunk := make([]byte, SZ)
+		for {
+			n, err := os.Stdin.Read(chunk)
+			if n > 0 {
+				msg := proc.NewCopyDataMessage()
+				msg.Sz = uint64(n)
+				copy(msg.Data, chunk[:n])
+
+				_, err = con.Write(msg.Encode())
+				if err != nil {
+					return err
+				}
+			}
+
+			if err == io.EOF {
+				break
+			} else {
+				return err
+			}
 		}
 
 		msg = proc.NewCommandCompleteMessage().Encode()
diff --git a/go.mod b/go.mod
index 7708e36..b48d556 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/yezzey-gp/yproxy
 
-go 1.21.1
+go 1.21
 
 require (
 	github.com/BurntSushi/toml v1.3.2
diff --git a/pkg/crypt/crypt.go b/pkg/crypt/crypt.go
index b57b03f..07708df 100644
--- a/pkg/crypt/crypt.go
+++ b/pkg/crypt/crypt.go
@@ -14,6 +14,7 @@ import (
 
 type Crypter interface {
 	Decrypt(reader io.Reader) (io.Reader, error)
+	Encrypt(writer io.WriteCloser) (io.WriteCloser, error)
 }
 
 type GPGCrypter struct {
@@ -82,3 +83,19 @@ func (g *GPGCrypter) Decrypt(reader io.Reader) (io.Reader, error) {
 
 	return md.UnverifiedBody, nil
 }
+
+func (g *GPGCrypter) Encrypt(writer io.WriteCloser) (io.WriteCloser, error) {
+	err := g.loadSecret()
+	if err != nil {
+		return nil, err
+	}
+	ylogger.Zero.Debug().Str("gpg path", g.cnf.GPGKeyPath).Msg("loaded gpg key")
+
+	encryptedWriter, err := openpgp.Encrypt(writer, g.PubKey, nil, nil, nil)
+
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return encryptedWriter, nil
+}
diff --git a/pkg/proc/command_complete.go b/pkg/proc/command_complete.go
index 693aea7..c4768e2 100644
--- a/pkg/proc/command_complete.go
+++ b/pkg/proc/command_complete.go
@@ -3,6 +3,7 @@ package proc
 import "encoding/binary"
 
 type CommandCompleteMessage struct {
+	ProtoMessage
 }
 
 func NewCommandCompleteMessage() *CommandCompleteMessage {
@@ -23,3 +24,7 @@ func (cc *CommandCompleteMessage) Encode() []byte {
 	binary.BigEndian.PutUint64(bs, uint64(ln))
 	return append(bs, bt...)
 }
+
+func (c *CommandCompleteMessage) Decode(body []byte) error {
+	return nil
+}
diff --git a/pkg/proc/copy_data.go b/pkg/proc/copy_data.go
new file mode 100644
index 0000000..0fc1b18
--- /dev/null
+++ b/pkg/proc/copy_data.go
@@ -0,0 +1,41 @@
+package proc
+
+import (
+	"encoding/binary"
+)
+
+type CopyDataMessage struct {
+	ProtoMessage
+	Sz   uint64
+	Data []byte
+}
+
+func NewCopyDataMessage() *CopyDataMessage {
+	return &CopyDataMessage{}
+}
+
+func (cc *CopyDataMessage) Encode() []byte {
+	bt := make([]byte, 4+cc.Sz)
+
+	bt[0] = byte(MessageTypeCopyData)
+
+	// sizeof(sz) + data
+	ln := len(bt) + 8 + 8 + int(cc.Sz)
+
+	bs := make([]byte, 8)
+	binary.BigEndian.PutUint64(bs, uint64(ln))
+
+	binary.BigEndian.PutUint64(bt[4:], uint64(cc.Sz))
+
+	// check data len more than cc.sz?
+	copy(bt[4+8:], cc.Data[:cc.Sz])
+
+	return append(bs, bt...)
+}
+
+func (cc *CopyDataMessage) Decode(data []byte) {
+	msgLenBuf := data[4:12]
+	cc.Sz = binary.BigEndian.Uint64(msgLenBuf)
+	cc.Data = make([]byte, cc.Sz)
+	copy(cc.Data, data[12:12+cc.Sz])
+}
diff --git a/pkg/proc/interaction.go b/pkg/proc/interaction.go
index ccaae2e..87ebaa7 100644
--- a/pkg/proc/interaction.go
+++ b/pkg/proc/interaction.go
@@ -2,6 +2,7 @@ package proc
 
 import (
 	"io"
+	"sync"
 
 	"github.com/yezzey-gp/yproxy/pkg/client"
 	"github.com/yezzey-gp/yproxy/pkg/crypt"
@@ -9,7 +10,7 @@ import (
 	"github.com/yezzey-gp/yproxy/pkg/ylogger"
 )
 
-func ProcConn(s storage.StorageReader, cr crypt.Crypter, ycl *client.YClient) error {
+func ProcConn(s storage.StorageInteractor, cr crypt.Crypter, ycl *client.YClient) error {
 	pr := NewProtoReader(ycl)
 	tp, body, err := pr.ReadPacket()
 	if err != nil {
@@ -46,6 +47,63 @@ func ProcConn(s storage.StorageReader, cr crypt.Crypter, ycl *client.YClient) er
 
 	case MessageTypePut:
 
+		msg := PutMessage{}
+		msg.Decode(body)
+
+		var w io.WriteCloser
+
+		r, w := io.Pipe()
+
+		if msg.Encrypt {
+			var err error
+			w, err = cr.Encrypt(w)
+			if err != nil {
+				_ = ycl.ReplyError(err, "failed to encrypt")
+
+				return ycl.Conn.Close()
+			}
+		}
+
+		wg := sync.WaitGroup{}
+		wg.Add(1)
+
+		go func() {
+			defer wg.Done()
+			for {
+				tp, body, err := pr.ReadPacket()
+				if err != nil {
+					_ = ycl.ReplyError(err, "failed to compelete request")
+
+					_ = ycl.Conn.Close()
+					return
+				}
+
+				switch tp {
+				case MessageTypeCopyData:
+					msg := CopyDataMessage{}
+					msg.Decode(body)
+					w.Write(msg.Data)
+				case MessageTypeCommandComplete:
+					msg := CommandCompleteMessage{}
+					msg.Decode(body)
+				case MessageTypeReadyForQuery:
+					msg := ReadyForQueryMessage{}
+					msg.Decode(body)
+					return
+				}
+			}
+		}()
+
+		err := s.PutFileToDest(msg.Name, r)
+
+		wg.Wait()
+
+		if err != nil {
+			_ = ycl.ReplyError(err, "failed to upload")
+
+			return ycl.Conn.Close()
+		}
+
 	default:
 
 		_ = ycl.ReplyError(nil, "wrong request type")
diff --git a/pkg/proc/message.go b/pkg/proc/message.go
index 3231064..1cf6466 100644
--- a/pkg/proc/message.go
+++ b/pkg/proc/message.go
@@ -14,6 +14,7 @@ const (
 	MessageTypePut             = MessageType(43)
 	MessageTypeCommandComplete = MessageType(44)
 	MessageTypeReadyForQuery   = MessageType(45)
+	MessageTypeCopyData        = MessageType(46)
 
 	DecryptMessage   = RequestEncryption(1)
 	NoDecryptMessage = RequestEncryption(0)
diff --git a/pkg/proc/message_test.go b/pkg/proc/message_test.go
index f85da76..f9b1a92 100644
--- a/pkg/proc/message_test.go
+++ b/pkg/proc/message_test.go
@@ -36,3 +36,33 @@ func TestCatMsg(t *testing.T) {
 		assert.Equal(msg.Decrypt, msg2.Decrypt)
 	}
 }
+
+func TestPutMsg(t *testing.T) {
+	assert := assert.New(t)
+
+	type tcase struct {
+		name    string
+		encrypt bool
+		err     error
+	}
+
+	for _, tt := range []tcase{
+		{
+			"nam1",
+			true,
+			nil,
+		},
+	} {
+
+		msg := proc.NewPutMessage(tt.name, tt.encrypt)
+		body := msg.Encode()
+
+		msg2 := proc.CatMessage{}
+
+		err := msg2.Decode(body[8:])
+
+		assert.NoError(err)
+		assert.Equal(msg.Name, msg2.Name)
+		assert.Equal(msg.Encrypt, msg2.Decrypt)
+	}
+}
diff --git a/pkg/proc/put_message.go b/pkg/proc/put_message.go
index cfb7788..03972a8 100644
--- a/pkg/proc/put_message.go
+++ b/pkg/proc/put_message.go
@@ -1,6 +1,9 @@
 package proc
 
-import "encoding/binary"
+import (
+	"bytes"
+	"encoding/binary"
+)
 
 type PutMessage struct {
 	ProtoMessage
@@ -37,3 +40,24 @@ func (c *PutMessage) Encode() []byte {
 	binary.BigEndian.PutUint64(bs, uint64(ln))
 	return append(bs, bt...)
 }
+
+func (c *PutMessage) GetPutName(b []byte) string {
+	buff := bytes.NewBufferString("")
+
+	for i := 0; i < len(b); i++ {
+		if b[i] == 0 {
+			break
+		}
+		buff.WriteByte(b[i])
+	}
+
+	return buff.String()
+}
+
+func (c *PutMessage) Decode(body []byte) error {
+	if body[1] == byte(EncryptMessage) {
+		c.Encrypt = true
+	}
+	c.Name = c.GetPutName(body[4:])
+	return nil
+}
diff --git a/pkg/proc/ready_for_query.go b/pkg/proc/ready_for_query.go
index 3972770..99e6a2f 100644
--- a/pkg/proc/ready_for_query.go
+++ b/pkg/proc/ready_for_query.go
@@ -3,6 +3,7 @@ package proc
 import "encoding/binary"
 
 type ReadyForQueryMessage struct {
+	ProtoMessage
 }
 
 func NewReadyForQueryMessage() *ReadyForQueryMessage {
@@ -23,3 +24,7 @@ func (cc *ReadyForQueryMessage) Encode() []byte {
 	binary.BigEndian.PutUint64(bs, uint64(ln))
 	return append(bs, bt...)
 }
+
+func (c *ReadyForQueryMessage) Decode(body []byte) error {
+	return nil
+}
diff --git a/pkg/storage/storage.go b/pkg/storage/storage.go
index a496b27..3cdbac3 100644
--- a/pkg/storage/storage.go
+++ b/pkg/storage/storage.go
@@ -7,6 +7,7 @@ import (
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/service/s3"
+	"github.com/aws/aws-sdk-go/service/s3/s3manager"
 	"github.com/yezzey-gp/yproxy/config"
 	"github.com/yezzey-gp/yproxy/pkg/ylogger"
 )
@@ -15,19 +16,31 @@ type StorageReader interface {
 	CatFileFromStorage(name string) (io.Reader, error)
 }
 
-type S3StorageReader struct {
+type StorageWriter interface {
+	PutFileToDest(name string, r io.Reader) error
+}
+
+type StorageInteractor interface {
+	StorageReader
+	StorageWriter
+}
+
+type S3StorageInteractor struct {
+	StorageReader
+	StorageWriter
+
 	pool SessionPool
 	cnf  *config.Storage
 }
 
-func NewStorage(cnf *config.Storage) StorageReader {
-	return &S3StorageReader{
+func NewStorage(cnf *config.Storage) StorageInteractor {
+	return &S3StorageInteractor{
 		pool: NewSessionPool(cnf),
 		cnf:  cnf,
 	}
 }
 
-func (s *S3StorageReader) CatFileFromStorage(name string) (io.Reader, error) {
+func (s *S3StorageInteractor) CatFileFromStorage(name string) (io.Reader, error) {
 	// XXX: fix this
 	sess, err := s.pool.GetSession(context.TODO())
 	if err != nil {
@@ -47,3 +60,30 @@ func (s *S3StorageReader) CatFileFromStorage(name string) (io.Reader, error) {
 	object, err := sess.GetObject(input)
 	return object.Body, err
 }
+
+func (s *S3StorageInteractor) PutFileToDest(name string, r io.Reader) error {
+	sess, err := s.pool.GetSession(context.TODO())
+	if err != nil {
+		ylogger.Zero.Err(err).Msg("failed to acquire s3 session")
+		return nil
+	}
+
+	objectPath := path.Join(s.cnf.StoragePrefix, name)
+
+	up := s3manager.NewUploaderWithClient(sess, func(uploader *s3manager.Uploader) {
+		uploader.PartSize = int64(1 << 20)
+		uploader.Concurrency = 1
+	})
+
+	_, err = up.Upload(
+		&s3manager.UploadInput{
+
+			Bucket:       aws.String(s.cnf.StorageBucket),
+			Key:          aws.String(objectPath),
+			Body:         r,
+			StorageClass: aws.String("STANDARD"),
+		},
+	)
+
+	return err
+}