diff --git a/client/client.go b/client/client.go
index d09e70f..5ad046e 100644
--- a/client/client.go
+++ b/client/client.go
@@ -48,6 +48,7 @@ type Client struct {
 
     jobhandlers map[string]JobHandler
 
+    isConn bool
     conn net.Conn
     addr string
     mutex sync.RWMutex
@@ -73,6 +74,7 @@ func New(addr string) (client *Client, err error) {
     if err = client.connect(); err != nil {
         return
     }
+    client.isConn = true
     go client.inLoop()
     go client.outLoop()
     return
@@ -105,6 +107,9 @@ func (client *Client) readData(length int) (data []byte, err error) {
     // read until data can be unpacked
     for i := length; i > 0 || len(data) < common.PACKET_LEN; i -= n {
         if n, err = client.conn.Read(buf); err != nil {
+            if !client.isConn {
+                return nil, common.ErrConnClosed
+            }
             if err == io.EOF && n == 0 {
                 if data == nil {
                     err = common.ErrConnection
@@ -193,7 +198,9 @@ func (client *Client) inLoop() {
             if err == common.ErrConnection {
                 client.Close()
             }
-            client.err(err)
+            if err != common.ErrConnClosed {
+               client.err(err)
+            }
             break
         }
         job, err := decodeJob(rel)
@@ -358,6 +365,7 @@ func (client *Client) Echo(data []byte) (r []byte) {
 
 // Close
 func (client *Client) Close() (err error) {
+    client.isConn = false
     close(client.in)
     close(client.out)
 
diff --git a/common/error.go b/common/error.go
index 4ee3195..fa52530 100644
--- a/common/error.go
+++ b/common/error.go
@@ -13,19 +13,20 @@ import (
 )
 
 var (
-    ErrJobTimeOut       = errors.New("Do a job time out.")
-    ErrInvalidData      = errors.New("Invalid data.")
-    ErrWorkWarning      = errors.New("Work warning.")
-    ErrWorkFail         = errors.New("Work fail.")
-    ErrWorkException    = errors.New("Work exeption.")
-    ErrDataType         = errors.New("Invalid data type.")
-    ErrOutOfCap         = errors.New("Out of the capability.")
-    ErrNotConn          = errors.New("Did not connect to job server.")
-    ErrFuncNotFound     = errors.New("The function was not found.")
-    ErrConnection       = errors.New("Connection error.")
-    ErrNoActiveAgent    = errors.New("No active agent.")
-    ErrTimeOut          = errors.New("Executing time out.")
-    ErrUnknown          = errors.New("Unknown error.")
+    ErrJobTimeOut       = errors.New("Do a job time out")
+    ErrInvalidData      = errors.New("Invalid data")
+    ErrWorkWarning      = errors.New("Work warning")
+    ErrWorkFail         = errors.New("Work fail")
+    ErrWorkException    = errors.New("Work exeption")
+    ErrDataType         = errors.New("Invalid data type")
+    ErrOutOfCap         = errors.New("Out of the capability")
+    ErrNotConn          = errors.New("Did not connect to job server")
+    ErrFuncNotFound     = errors.New("The function was not found")
+    ErrConnection       = errors.New("Connection error")
+    ErrNoActiveAgent    = errors.New("No active agent")
+    ErrTimeOut          = errors.New("Executing time out")
+    ErrUnknown          = errors.New("Unknown error")
+    ErrConnClosed       = errors.New("Connection closed")
 )
 func DisablePanic() {recover()}
 
diff --git a/gearman_test.go b/gearman_test.go
index c9c774b..9e35b1c 100644
--- a/gearman_test.go
+++ b/gearman_test.go
@@ -63,7 +63,8 @@ func TestJobs(t *testing.T) {
     defer c.Close()
 
     c.ErrHandler = func(e error) {
-        t.Error(e)
+//        t.Error(e)
+        t.Log(e)
     }
 
     {