diff --git a/client/client.go b/client/client.go
index 6de4212..4a3aa8f 100644
--- a/client/client.go
+++ b/client/client.go
@@ -82,7 +82,7 @@ func (client *Client) inLoop() {
     for {
         rel, err := client.read()
         if err != nil {
-            if err == common.ErrEmptyReading {
+            if err == common.ErrConnection {
                 client.Close()
                 break
             }
@@ -123,7 +123,7 @@ func (client *Client) read() (data []byte, err error) {
             if n, err = client.conn.Read(buf); err != nil {
                 if err == io.EOF && n == 0 {
                     if data == nil {
-                        err = common.ErrEmptyReading
+                        err = common.ErrConnection
                         return
                     }
                     break
diff --git a/common/error.go b/common/error.go
index 463af2d..23d2879 100644
--- a/common/error.go
+++ b/common/error.go
@@ -22,7 +22,7 @@ var (
     ErrOutOfCap         = errors.New("Out of the capability.")
     ErrNotConn          = errors.New("Did not connect to job server.")
     ErrFuncNotFound     = errors.New("The function was not found.")
-    ErrEmptyReading     = errors.New("Empty reading.")
+    ErrConnection     = errors.New("Connection error.")
 )
 func DisablePanic() {recover()}
 
diff --git a/worker/agent.go b/worker/agent.go
index ceef56a..4e92209 100644
--- a/worker/agent.go
+++ b/worker/agent.go
@@ -61,7 +61,8 @@ func (a *agent) inLoop() {
         }
         rel, err := a.read()
         if err != nil {
-            if err == common.ErrEmptyReading {
+            if err == common.ErrConnection {
+                // TODO: reconnection
                 break
             }
             a.worker.err(err)
@@ -102,7 +103,7 @@ func (a *agent) read() (data []byte, err error) {
             if n, err = a.conn.Read(buf); err != nil {
                 if err == io.EOF && n == 0 {
                     if data == nil {
-                        err = common.ErrEmptyReading
+                        err = common.ErrConnection
                         return
                     }
                     break