diff --git a/client/control.go b/client/control.go
index 7c183c2..53669ae 100644
--- a/client/control.go
+++ b/client/control.go
@@ -19,6 +19,7 @@ import (
 	"io"
 	"io/ioutil"
 	"runtime"
+	"runtime/debug"
 	"sync"
 	"time"
 
@@ -271,6 +272,7 @@ func (ctl *Control) reader() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.Error("panic error: %v", err)
+			ctl.Error(string(debug.Stack()))
 		}
 	}()
 	defer ctl.readerShutdown.Done()
@@ -319,6 +321,7 @@ func (ctl *Control) msgHandler() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.Error("panic error: %v", err)
+			ctl.Error(string(debug.Stack()))
 		}
 	}()
 	defer ctl.msgHandlerShutdown.Done()
diff --git a/models/config/proxy.go b/models/config/proxy.go
index e6022b6..9558f5b 100644
--- a/models/config/proxy.go
+++ b/models/config/proxy.go
@@ -512,6 +512,7 @@ func (cfg *HttpProxyConf) CheckForSvr() (err error) {
 		err = fmt.Errorf("type [http] not support when vhost_http_port is not set")
 	}
 	if err = cfg.DomainConf.checkForSvr(); err != nil {
+		err = fmt.Errorf("proxy [%s] domain conf check error: %v", cfg.ProxyName, err)
 		return
 	}
 	return
@@ -574,6 +575,7 @@ func (cfg *HttpsProxyConf) CheckForSvr() (err error) {
 		return fmt.Errorf("type [https] not support when vhost_https_port is not set")
 	}
 	if err = cfg.DomainConf.checkForSvr(); err != nil {
+		err = fmt.Errorf("proxy [%s] domain conf check error: %v", cfg.ProxyName, err)
 		return
 	}
 	return
diff --git a/server/control.go b/server/control.go
index 26a0cf1..85b8484 100644
--- a/server/control.go
+++ b/server/control.go
@@ -17,6 +17,7 @@ package server
 import (
 	"fmt"
 	"io"
+	"runtime/debug"
 	"sync"
 	"time"
 
@@ -125,6 +126,7 @@ func (ctl *Control) RegisterWorkConn(conn net.Conn) {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
 		}
 	}()
 
@@ -145,6 +147,7 @@ func (ctl *Control) GetWorkConn() (workConn net.Conn, err error) {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
 		}
 	}()
 
@@ -199,6 +202,7 @@ func (ctl *Control) writer() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
 		}
 	}()
 
@@ -228,6 +232,7 @@ func (ctl *Control) reader() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
 		}
 	}()
 
@@ -254,6 +259,7 @@ func (ctl *Control) stoper() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
 		}
 	}()
 
@@ -292,6 +298,7 @@ func (ctl *Control) manager() {
 	defer func() {
 		if err := recover(); err != nil {
 			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
 		}
 	}()
 
@@ -306,7 +313,6 @@ func (ctl *Control) manager() {
 		case <-heartbeat.C:
 			if time.Since(ctl.lastPing) > time.Duration(g.GlbServerCfg.HeartBeatTimeout)*time.Second {
 				ctl.conn.Warn("heartbeat timeout")
-				ctl.allShutdown.Start()
 				return
 			}
 		case rawMsg, ok := <-ctl.readCh: