diff --git a/client/client.go b/client/client.go
index e793514..ad8cc50 100644
--- a/client/client.go
+++ b/client/client.go
@@ -2,8 +2,8 @@ package client
 
 import (
 	"fmt"
-	"io"
 	"log"
+	"net"
 	"runtime"
 	"sync"
 	"sync/atomic"
@@ -31,7 +31,7 @@ type Client interface {
 type client struct {
 	ch ClientHandler
 
-	rwc io.ReadWriteCloser
+	conn net.Conn
 
 	pendingRequestsCount uint32
 	pendingRequests      map[interface{}]*CallState
@@ -51,7 +51,7 @@ func (c *client) Connect() error {
 		panic("RPC Client: the given client is already started. Call Client.Stop() before calling Client.Start() again!")
 	}
 
-	if c.rwc, err = c.ch.Connect(); nil != err {
+	if c.conn, err = c.ch.Connect(); nil != err {
 		return err
 	}
 	c.stopChan = make(chan struct{})
@@ -187,7 +187,7 @@ func (c *client) handleRPC() {
 		<-writerDone
 	}
 
-	c.rwc.Close()
+	c.conn.Close()
 
 	if err != nil {
 		//c.LogError("%s", err)
@@ -258,7 +258,7 @@ func (c *client) rpcWriter(stopChan <-chan struct{}, writerDone chan<- error) {
 			releaseCallState(cs)
 		}
 
-		if err = c.ch.GetCodec().Write(c.rwc, cs.Method, cs.Args, cs.ID); nil != err {
+		if err = c.ch.GetCodec().Write(c.conn, cs.Method, cs.Args, cs.ID); nil != err {
 			err = fmt.Errorf("Client: Cannot send request to wire: [%s]", err)
 			return
 		}
@@ -277,7 +277,7 @@ func (c *client) rpcReader(readerDone chan<- error) {
 	}()
 
 	for {
-		crn, err := c.ch.GetCodec().NewResponseOrNotify(c.rwc)
+		crn, err := c.ch.GetCodec().NewResponseOrNotify(c.conn)
 		if nil != err {
 			err = fmt.Errorf("Client: Cannot decode response or notify: [%s]", err)
 			return
diff --git a/client/client_handler.go b/client/client_handler.go
index d510812..c2b8c58 100644
--- a/client/client_handler.go
+++ b/client/client_handler.go
@@ -1,7 +1,7 @@
 package client
 
 import (
-	"io"
+	"net"
 	"time"
 
 	"git.loafle.net/commons_go/rpc"
@@ -9,7 +9,7 @@ import (
 )
 
 type ClientHandler interface {
-	Connect() (io.ReadWriteCloser, error)
+	Connect() (net.Conn, error)
 	GetCodec() protocol.ClientCodec
 
 	GetRPCRegistry() rpc.Registry
diff --git a/client/client_handlers.go b/client/client_handlers.go
index cf46657..997cdf8 100644
--- a/client/client_handlers.go
+++ b/client/client_handlers.go
@@ -2,7 +2,7 @@ package client
 
 import (
 	"errors"
-	"io"
+	"net"
 	"sync"
 	"time"
 
@@ -30,7 +30,7 @@ type ClientHandlers struct {
 	requestIDMtx sync.Mutex
 }
 
-func (ch *ClientHandlers) Connect() (io.ReadWriteCloser, error) {
+func (ch *ClientHandlers) Connect() (net.Conn, error) {
 	return nil, errors.New("RPC Client: ClientHandlers method[Connect] is not implement")
 }