diff --git a/README.md b/README.md
index fbae1cc..8161ee0 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Yet another cross platform transparent proxy tool
       |       | relay service|        |
       | +-----+---------------------+ |
       | |                           | |
-      | | parsr http(s) target url  | |
+      | | parse http(s) target url  | |
       | |                           | |
       | +---------------------------+ |
       |     shadow service            |
@@ -23,7 +23,7 @@ Yet another cross platform transparent proxy tool
       |                  |            |
       |  shadow service  |            |
       |  relay service   |     dns    |
-      |                  |    server  |
+      |                  |   service  |
       |                  |            |
       |       127.0.0.1 or other      |
       |                  |            |
@@ -41,7 +41,7 @@ Yet another cross platform transparent proxy tool
 1. install server on `server node` by `make server`
 2. write config file, example: [conf/sower.toml](https://github.com/wweir/sower/blob/master/conf/sower.toml)
 3. install client on `client node` by `make client`
-4. add `127.0.0.1` as you first domain server
+4. add `127.0.0.1` as you first domain name server
 
 ## todo
 - [x] authenticate
diff --git a/parse/addr.go b/parse/parse_addr.go
similarity index 100%
rename from parse/addr.go
rename to parse/parse_addr.go
diff --git a/proxy/client.go b/proxy/client.go
index 0b01c79..ad64f7c 100644
--- a/proxy/client.go
+++ b/proxy/client.go
@@ -16,6 +16,7 @@ type Client interface {
 
 func StartClient(netType, server, cipher, password string) {
 	var connCh = listenLocal([]string{":80", ":443"})
+
 	var client Client
 	switch netType {
 	case QUIC.String():
@@ -24,9 +25,11 @@ func StartClient(netType, server, cipher, password string) {
 		client = kcp.NewClient()
 	case TCP.String():
 		client = tcp.NewClient()
+	default:
+		glog.Fatalln("invalid net type: " + netType)
 	}
-	glog.Infoln("Client started.")
 
+	glog.Infoln("Client started.")
 	for {
 		conn := <-connCh
 		glog.V(1).Infof("new conn from (%s) to (%s)", conn.RemoteAddr(), server)
diff --git a/proxy/server.go b/proxy/server.go
index d8dea42..891c9ec 100644
--- a/proxy/server.go
+++ b/proxy/server.go
@@ -25,6 +25,8 @@ func StartServer(netType, port, cipher, password string) {
 		server = kcp.NewServer(password)
 	case TCP.String():
 		server = tcp.NewServer()
+	default:
+		glog.Fatalln("invalid net type: " + netType)
 	}
 
 	if port == "" {
@@ -37,8 +39,8 @@ func StartServer(netType, port, cipher, password string) {
 	if err != nil {
 		glog.Fatalf("listen %v fail: %s", port, err)
 	}
-	glog.Infoln("Server started.")
 
+	glog.Infoln("Server started.")
 	for {
 		conn := <-connCh
 		conn = shadow.Shadow(conn, cipher, password)
@@ -57,6 +59,7 @@ func handle(conn net.Conn) {
 
 	rc, err := net.Dial("tcp", addr)
 	if err != nil {
+		conn.Close()
 		glog.Warningln(err)
 		return
 	}