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WsSslErrorHandler.java
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WsSslErrorHandler.java
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/*
* Copyright (C) 2016-2019 phantombot.tv
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.gmt2001.httpwsserver;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler.HandshakeComplete;
import org.json.JSONStringer;
/**
* Processes WebSocket frames and passes successful ones to the appropriate registered final handler
*
* @author gmt2001
*/
public class WsSslErrorHandler extends SimpleChannelInboundHandler<WebSocketFrame> {
WsSslErrorHandler() {
super();
}
/**
* Handles incoming WebSocket frames and passes them to the appropriate {@link WsFrameHandler}
*
* @param ctx The {@link ChannelHandlerContext} of the session
* @param req The {@link WebSocketFrame} containing the request frame
* @throws Exception Passes any thrown exceptions up the stack
*/
@Override
protected void channelRead0(ChannelHandlerContext ctx, WebSocketFrame frame) throws Exception {
}
/**
* Captures {@link HandshakeComplete} events and saves the {@link WsFrameHandler} URI to the session
*
* If a handler is not available for the requested path, then {@code 404 NOT FOUND} is sent back to the client using JSON:API format
*
* @param ctx The {@link ChannelHandlerContext} of the session
* @param evt The event object
* @throws Exception Passes any thrown exceptions up the stack
*/
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof HandshakeComplete) {
JSONStringer jsonObject = new JSONStringer();
jsonObject.object().key("errors").array().object()
.key("status").value("403")
.key("title").value("Forbidden")
.key("detail").value("WSS Required")
.endObject().endArray().endObject();
ctx.channel().writeAndFlush(new TextWebSocketFrame(jsonObject.toString()));
ctx.close();
}
}
/**
* Handles exceptions that are thrown up the stack
*
* @param ctx The {@link ChannelHandlerContext} of the session
* @param cause The exception
*/
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
com.gmt2001.Console.debug.printOrLogStackTrace(cause);
ctx.close();
}
}