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/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package org.apache.hbase.thirdparty.io.netty.handler.codec.http.websocketx;
import org.apache.hbase.thirdparty.io.netty.buffer.Unpooled;
import org.apache.hbase.thirdparty.io.netty.channel.Channel;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelFutureListener;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelInboundHandler;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelPipeline;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelPromise;
import org.apache.hbase.thirdparty.io.netty.handler.codec.http.DefaultFullHttpResponse;
import org.apache.hbase.thirdparty.io.netty.handler.codec.http.FullHttpResponse;
import org.apache.hbase.thirdparty.io.netty.handler.codec.http.HttpHeaders;
import org.apache.hbase.thirdparty.io.netty.handler.codec.http.HttpResponseStatus;
import org.apache.hbase.thirdparty.io.netty.util.AttributeKey;
import java.util.List;
import static org.apache.hbase.thirdparty.io.netty.handler.codec.http.HttpVersion.HTTP_1_1;
import static org.apache.hbase.thirdparty.io.netty.handler.codec.http.websocketx.WebSocketServerProtocolConfig.DEFAULT_HANDSHAKE_TIMEOUT_MILLIS;
import static org.apache.hbase.thirdparty.io.netty.util.internal.ObjectUtil.checkNotNull;
/**
* This handler does all the heavy lifting for you to run a websocket server.
*
* It takes care of websocket handshaking as well as processing of control frames (Close, Ping, Pong). Text and Binary
* data frames are passed to the next handler in the pipeline (implemented by you) for processing.
*
* See org.apache.hbase.thirdparty.io.netty.example.http.websocketx.html5.WebSocketServer for usage.
*
* The implementation of this handler assumes that you just want to run a websocket server and not process other types
* HTTP requests (like GET and POST). If you wish to support both HTTP requests and websockets in the one server, refer
* to the org.apache.hbase.thirdparty.io.netty.example.http.websocketx.server.WebSocketServer example.
*
* To know once a handshake was done you can intercept the
* {@link ChannelInboundHandler#userEventTriggered(ChannelHandlerContext, Object)} and check if the event was instance
* of {@link HandshakeComplete}, the event will contain extra information about the handshake such as the request and
* selected subprotocol.
*/
public class WebSocketServerProtocolHandler extends WebSocketProtocolHandler {
/**
* Events that are fired to notify about handshake status
*/
public enum ServerHandshakeStateEvent {
/**
* The Handshake was completed successfully and the channel was upgraded to websockets.
*
* @deprecated in favor of {@link HandshakeComplete} class,
* it provides extra information about the handshake
*/
@Deprecated
HANDSHAKE_COMPLETE,
/**
* The Handshake was timed out
*/
HANDSHAKE_TIMEOUT
}
/**
* The Handshake was completed successfully and the channel was upgraded to websockets.
*/
public static final class HandshakeComplete {
private final String requestUri;
private final HttpHeaders requestHeaders;
private final String selectedSubprotocol;
HandshakeComplete(String requestUri, HttpHeaders requestHeaders, String selectedSubprotocol) {
this.requestUri = requestUri;
this.requestHeaders = requestHeaders;
this.selectedSubprotocol = selectedSubprotocol;
}
public String requestUri() {
return requestUri;
}
public HttpHeaders requestHeaders() {
return requestHeaders;
}
public String selectedSubprotocol() {
return selectedSubprotocol;
}
}
private static final AttributeKey HANDSHAKER_ATTR_KEY =
AttributeKey.valueOf(WebSocketServerHandshaker.class, "HANDSHAKER");
private final WebSocketServerProtocolConfig serverConfig;
/**
* Base constructor
*
* @param serverConfig
* Server protocol configuration.
*/
public WebSocketServerProtocolHandler(WebSocketServerProtocolConfig serverConfig) {
super(checkNotNull(serverConfig, "serverConfig").dropPongFrames(),
serverConfig.sendCloseFrame(),
serverConfig.forceCloseTimeoutMillis()
);
this.serverConfig = serverConfig;
}
public WebSocketServerProtocolHandler(String websocketPath) {
this(websocketPath, DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, long handshakeTimeoutMillis) {
this(websocketPath, false, handshakeTimeoutMillis);
}
public WebSocketServerProtocolHandler(String websocketPath, boolean checkStartsWith) {
this(websocketPath, checkStartsWith, DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, boolean checkStartsWith, long handshakeTimeoutMillis) {
this(websocketPath, null, false, 65536, false, checkStartsWith, handshakeTimeoutMillis);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols) {
this(websocketPath, subprotocols, DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols, long handshakeTimeoutMillis) {
this(websocketPath, subprotocols, false, handshakeTimeoutMillis);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols, boolean allowExtensions) {
this(websocketPath, subprotocols, allowExtensions, DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols, boolean allowExtensions,
long handshakeTimeoutMillis) {
this(websocketPath, subprotocols, allowExtensions, 65536, handshakeTimeoutMillis);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols,
boolean allowExtensions, int maxFrameSize) {
this(websocketPath, subprotocols, allowExtensions, maxFrameSize, DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols,
boolean allowExtensions, int maxFrameSize, long handshakeTimeoutMillis) {
this(websocketPath, subprotocols, allowExtensions, maxFrameSize, false, handshakeTimeoutMillis);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols,
boolean allowExtensions, int maxFrameSize, boolean allowMaskMismatch) {
this(websocketPath, subprotocols, allowExtensions, maxFrameSize, allowMaskMismatch,
DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols, boolean allowExtensions,
int maxFrameSize, boolean allowMaskMismatch, long handshakeTimeoutMillis) {
this(websocketPath, subprotocols, allowExtensions, maxFrameSize, allowMaskMismatch, false,
handshakeTimeoutMillis);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols,
boolean allowExtensions, int maxFrameSize, boolean allowMaskMismatch, boolean checkStartsWith) {
this(websocketPath, subprotocols, allowExtensions, maxFrameSize, allowMaskMismatch, checkStartsWith,
DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols,
boolean allowExtensions, int maxFrameSize, boolean allowMaskMismatch,
boolean checkStartsWith, long handshakeTimeoutMillis) {
this(websocketPath, subprotocols, allowExtensions, maxFrameSize, allowMaskMismatch, checkStartsWith, true,
handshakeTimeoutMillis);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols,
boolean allowExtensions, int maxFrameSize, boolean allowMaskMismatch,
boolean checkStartsWith, boolean dropPongFrames) {
this(websocketPath, subprotocols, allowExtensions, maxFrameSize, allowMaskMismatch, checkStartsWith,
dropPongFrames, DEFAULT_HANDSHAKE_TIMEOUT_MILLIS);
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols, boolean allowExtensions,
int maxFrameSize, boolean allowMaskMismatch, boolean checkStartsWith,
boolean dropPongFrames, long handshakeTimeoutMillis) {
this(websocketPath, subprotocols, checkStartsWith, dropPongFrames, handshakeTimeoutMillis,
WebSocketDecoderConfig.newBuilder()
.maxFramePayloadLength(maxFrameSize)
.allowMaskMismatch(allowMaskMismatch)
.allowExtensions(allowExtensions)
.build());
}
public WebSocketServerProtocolHandler(String websocketPath, String subprotocols, boolean checkStartsWith,
boolean dropPongFrames, long handshakeTimeoutMillis,
WebSocketDecoderConfig decoderConfig) {
this(WebSocketServerProtocolConfig.newBuilder()
.websocketPath(websocketPath)
.subprotocols(subprotocols)
.checkStartsWith(checkStartsWith)
.handshakeTimeoutMillis(handshakeTimeoutMillis)
.dropPongFrames(dropPongFrames)
.decoderConfig(decoderConfig)
.build());
}
@Override
public void handlerAdded(ChannelHandlerContext ctx) {
ChannelPipeline cp = ctx.pipeline();
if (cp.get(WebSocketServerProtocolHandshakeHandler.class) == null) {
// Add the WebSocketHandshakeHandler before this one.
cp.addBefore(ctx.name(), WebSocketServerProtocolHandshakeHandler.class.getName(),
new WebSocketServerProtocolHandshakeHandler(serverConfig));
}
if (serverConfig.decoderConfig().withUTF8Validator() && cp.get(Utf8FrameValidator.class) == null) {
// Add the UFT8 checking before this one.
cp.addBefore(ctx.name(), Utf8FrameValidator.class.getName(),
new Utf8FrameValidator());
}
}
@Override
protected void decode(ChannelHandlerContext ctx, WebSocketFrame frame, List
