DetailedErrorsToClient - only send detailed error info if this is on

server/control.go

@@ -438,7 +438,11 @@ func (ctl *Control) manager() {
 					ProxyName: m.ProxyName,
 				}
 				if err != nil {
-					resp.Error = err.Error()
+					if ctl.serverCfg.DetailedErrorsToClient {
+						resp.Error = err.Error()
+					} else {
+						resp.Error = fmt.Sprintf("new proxy [%s] error", m.ProxyName)
+					}
 					xl.Warn("new proxy [%s] error: %v", m.ProxyName, err)
 				} else {
 					resp.RemoteAddr = remoteAddr

server/service.go

@@ -320,9 +320,13 @@ func (svr *Service) HandleListener(l net.Listener) {
 					// Otherwise send success message in control's work goroutine.
 					if err != nil {
 						xl.Warn("register control error: %v", err)
+						errStr := "register control error"
+						if svr.cfg.DetailedErrorsToClient {
+							errStr = err.Error()
+						}
 						msg.WriteMsg(conn, &msg.LoginResp{
 							Version: version.Full(),
-							Error:   err.Error(),
+							Error:   errStr,
 						})
 						conn.Close()
 					}
@@ -331,9 +335,13 @@ func (svr *Service) HandleListener(l net.Listener) {
 				case *msg.NewVisitorConn:
 					if err = svr.RegisterVisitorConn(conn, m); err != nil {
 						xl.Warn("register visitor conn error: %v", err)
+						errStr := "register visitor conn error"
+						if svr.cfg.DetailedErrorsToClient {
+							errStr = err.Error()
+						}
 						msg.WriteMsg(conn, &msg.NewVisitorConnResp{
 							ProxyName: m.ProxyName,
-							Error:     err.Error(),
+							Error:     errStr,
 						})
 						conn.Close()
 					} else {