diff --git a/client/client.go b/client/client.go
index 355b1e7..c426226 100644
--- a/client/client.go
+++ b/client/client.go
@@ -9,6 +9,7 @@ import (
 	"io"
 	"net"
 	"sync"
+	"fmt"
 )
 
 /*
@@ -114,6 +115,7 @@ func (client *Client) readLoop() {
 			client.err(err)
 			continue
 		}
+		fmt.Printf("[%X]", data)
 		client.in <- data
 	}
 	close(client.in)
@@ -191,10 +193,6 @@ func (client *Client) handleInner(key string, resp *Response) {
 // Internal do
 func (client *Client) do(funcname string, data []byte,
 	flag uint32) (handle string, err error) {
-	id := IdGen.Id()
-	req := getJob(id, []byte(funcname), data)
-	req.DataType = flag
-	client.write(req)
 	var wg sync.WaitGroup
 	wg.Add(1)
 	client.mutex.RLock()
@@ -208,6 +206,10 @@ func (client *Client) do(funcname string, data []byte,
 		}
 		handle = resp.Handle
 	})
+	id := IdGen.Id()
+	req := getJob(id, []byte(funcname), data)
+	req.DataType = flag
+	client.write(req)
 	wg.Wait()
 	return
 }
@@ -260,10 +262,6 @@ func (client *Client) DoBg(funcname string, data []byte,
 // Get job status from job server.
 // !!!Not fully tested.!!!
 func (client *Client) Status(handle string) (status *Status, err error) {
-	req := getRequest()
-	req.DataType = GET_STATUS
-	req.Data = []byte(handle)
-	client.write(req)
 	var wg sync.WaitGroup
 	wg.Add(1)
 	client.mutex.Lock()
@@ -277,25 +275,27 @@ func (client *Client) Status(handle string) (status *Status, err error) {
 			client.err(err)
 		}
 	})
+	req := getRequest()
+	req.DataType = GET_STATUS
+	req.Data = []byte(handle)
+	client.write(req)
 	wg.Wait()
 	return
 }
 
 // Send a something out, get the samething back.
 func (client *Client) Echo(data []byte) (echo []byte, err error) {
+	var wg sync.WaitGroup
+	wg.Add(1)
+	client.innerHandler["e"] = ResponseHandler(func(resp *Response) {
+		defer wg.Done()
+		echo = resp.Data
+	})
 	req := getRequest()
 	req.DataType = ECHO_REQ
 	req.Data = data
 	client.write(req)
-	var wg sync.WaitGroup
-	wg.Add(1)
-	client.mutex.Lock()
 	client.lastcall = "e"
-	client.innerHandler["e"] = ResponseHandler(func(resp *Response) {
-		defer wg.Done()
-		defer client.mutex.Unlock()
-		echo = resp.Data
-	})
 	wg.Wait()
 	return
 }
diff --git a/client/common.go b/client/common.go
index 4636bfb..cc40750 100644
--- a/client/common.go
+++ b/client/common.go
@@ -22,30 +22,30 @@ const (
 	RES_STR = "\x00RES"
 
 	// package data type
-	CAN_DO          = 1
-	CANT_DO         = 2
-	RESET_ABILITIES = 3
-	PRE_SLEEP       = 4
-	NOOP            = 6
-	JOB_CREATED     = 8
-	GRAB_JOB        = 9
-	NO_JOB          = 10
-	JOB_ASSIGN      = 11
-	WORK_STATUS     = 12
-	WORK_COMPLETE   = 13
-	WORK_FAIL       = 14
-	GET_STATUS      = 15
-	ECHO_REQ        = 16
-	ECHO_RES        = 17
-	ERROR           = 19
-	STATUS_RES      = 20
-	SET_CLIENT_ID   = 22
-	CAN_DO_TIMEOUT  = 23
-	WORK_EXCEPTION  = 25
-	WORK_DATA       = 28
-	WORK_WARNING    = 29
-	GRAB_JOB_UNIQ   = 30
-	JOB_ASSIGN_UNIQ = 31
+	CAN_DO          = 0x1
+	CANT_DO         = 0x2
+	RESET_ABILITIES = 0x3
+	PRE_SLEEP       = 0x4
+	NOOP            = 0x6
+	JOB_CREATED     = 0x8
+	GRAB_JOB        = 0x9
+	NO_JOB          = 0xa
+	JOB_ASSIGN      = 0xb
+	WORK_STATUS     = 0xc
+	WORK_COMPLETE   = 0xd
+	WORK_FAIL       = 0xe
+	GET_STATUS      = 0xf
+	ECHO_REQ        = 0x10
+	ECHO_RES        = 0x11
+	ERROR           = 0x13
+	STATUS_RES      = 0x14
+	SET_CLIENT_ID   = 0x16
+	CAN_DO_TIMEOUT  = 0x17
+	WORK_EXCEPTION  = 0x19
+	WORK_DATA       = 0x1c
+	WORK_WARNING    = 0x1d
+	GRAB_JOB_UNIQ   = 0x1e
+	JOB_ASSIGN_UNIQ = 0x1f
 
 	SUBMIT_JOB         = 7
 	SUBMIT_JOB_BG      = 18
diff --git a/example/client/client.go b/example/client/client.go
index cce04dc..9161c57 100644
--- a/example/client/client.go
+++ b/example/client/client.go
@@ -3,7 +3,6 @@ package main
 import (
     "log"
     "sync"
-    "time"
     "github.com/mikespook/gearman-go/client"
 )
 
@@ -14,29 +13,32 @@ func main() {
     // by implementing IdGenerator interface.
     // client.IdGen = client.NewAutoIncId()
 
-    c, err := client.New("127.0.0.1:4730")
+    c, err := client.New("tcp4", "127.0.0.1:4730")
     if err != nil {
         log.Fatalln(err)
     }
     defer c.Close()
-    c.ErrHandler = func(e error) {
+    c.ErrorHandler = func(e error) {
         log.Println(e)
     }
     echo := []byte("Hello\x00 world")
     wg.Add(1)
-    echomsg, err := c.Echo(echo, time.Second)
+    echomsg, err := c.Echo(echo)
     if err != nil {
         log.Fatalln(err)
     }
     log.Println(string(echomsg))
     wg.Done()
-    jobHandler := func(job *client.Job) {
+    jobHandler := func(job *client.Response) {
         log.Printf("%s", job.Data)
         wg.Done()
     }
-    handle := c.Do("ToUpper", echo, client.JOB_NORMAL, jobHandler)
+    handle, err := c.Do("ToUpper", echo, client.JOB_NORMAL, jobHandler)
+	if err != nil {
+		log.Fatalln(err)
+	}
     wg.Add(1)
-    status, err := c.Status(handle, time.Second)
+    status, err := c.Status(handle)
     if err != nil {
         log.Fatalln(err)
     }