diff --git a/connection_pool.go b/connection_pool.go
deleted file mode 100644
index 0f3fa10..0000000
--- a/connection_pool.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package crawler_manager
-
-import "google.golang.org/grpc"
-
-type GRPCPool struct {
-}
-
-func (c *GRPCPool)GetClient(container string,port string) (*grpc.ClientConn, error) {
-	return grpc.Dial("localhost:50000", grpc.WithInsecure())
-}
diff --git a/crawler_manager.go b/crawler_manager.go
index 26ecd93..e68ea35 100644
--- a/crawler_manager.go
+++ b/crawler_manager.go
@@ -11,7 +11,7 @@ import (
 
 	"io/ioutil"
 
-
+	"google.golang.org/grpc"
 )
 
 const (
@@ -26,7 +26,7 @@ const (
 )
 
 
-type crawler_manager struct {
+type CrawlerManager struct {
 
 }
 
@@ -44,6 +44,15 @@ func init() {
 
 }
 
+func (c *CrawlerManager)GetClient(container string,port string) (*grpc.ClientConn, error) {
+
+	port = portMap[container]
+
+	return grpc.Dial("localhost:"+port, grpc.WithInsecure())
+}
+
+
+
 func ReadConfig(path string ) *config.Config {
 
 	bytes, err := ioutil.ReadFile(path)
diff --git a/crawler_runner.go b/crawler_runner.go
index adc3e99..60f7c54 100644
--- a/crawler_runner.go
+++ b/crawler_runner.go
@@ -37,6 +37,9 @@ func RunContainer(container *string, cpm *map[string][]string) {
 		log.Println(*container + " run success port:" , currentPort , "pid:", cmd.Process.Pid )
 		//write pid file     container_pid_port
 		ioutil.WriteFile(PidFolder+*container+"_"+strconv.Itoa(cmd.Process.Pid)+ "_"+strconv.Itoa(currentPort), []byte(""), os.ModePerm)
+
+		portMap[*container] = strconv.Itoa(currentPort)
+
 		currentPort++
 
 		break;