1 /*
2 * Copyright 2025 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.handler.codec.http.websocketx;
17
18 /**
19 * Allows to customize how the mask is generated that is used to mask the {@link WebSocketFrame}. Masking
20 * is only be done on the client-side.
21 */
22 public interface WebSocketFrameMaskGenerator {
23
24 /**
25 * Return the next mask that is used to mask the payload of the {@link WebSocketFrame}.
26 *
27 * @return mask.
28 */
29 int nextMask();
30 }