diff --git a/cmd/api-generator/main.go b/cmd/api-generator/main.go
index c908571..3a6a73b 100644
--- a/cmd/api-generator/main.go
+++ b/cmd/api-generator/main.go
@@ -231,9 +231,6 @@ func cut(s, sep string) (before, after string, found bool) {
 	return s, "", false
 }
 
-func isASCIIDigit(c byte) bool { return '0' <= c && c <= '9' }
-func isASCIILower(c byte) bool { return 'a' <= c && c <= 'z' }
-
 // some abbreviations need translation before transforming ro snake case
 var replacer = strings.NewReplacer("ID", "Id")
 
@@ -241,11 +238,12 @@ func snakecase(s string) string {
 	s = replacer.Replace(s)
 	t := make([]byte, 0, 32)
 	for i := 0; i < len(s); i++ {
-		if isASCIILower(s[i]) || isASCIIDigit(s[i]) {
-			t = append(t, s[i])
+		c := s[i]
+		if ('a' <= c && c <= 'z') || ('0' <= c && c <= '9') {
+			t = append(t, c)
 		} else {
 			t = append(t, '_')
-			t = append(t, s[i]^0x20)
+			t = append(t, c^0x20)
 		}
 	}
 	return string(t)
diff --git a/server/websocket.go b/server/websocket.go
index 9b1a547..e415ff2 100644
--- a/server/websocket.go
+++ b/server/websocket.go
@@ -167,6 +167,7 @@ func (c *websocketClient) connect(typ, url string, conptr **wsConn) {
 
 func (c *websocketClient) listenAPI(conn *wsConn, u bool) {
 	defer func() { _ = conn.Close(websocket.StatusNormalClosure, "") }()
+	conn.Conn.SetReadLimit(1024 * 1024 * 128)
 	for {
 		buffer := global.NewBuffer()
 		t, reader, err := conn.Conn.Reader(context.Background())