/*
* Copyright 2012 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:
*
* http://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.
*/
//The MIT License
//
//Copyright (c) 2009 Carl Bystršm
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in
//all copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//THE SOFTWARE.
package io.netty.example.http.websocketx.client;
import io.netty.channel.
Channel;
import io.netty.channel.
ChannelFuture;
import io.netty.channel.
ChannelHandlerContext;
import io.netty.channel.
ChannelPromise;
import io.netty.channel.
SimpleChannelInboundHandler;
import io.netty.handler.codec.http.
FullHttpResponse;
import io.netty.handler.codec.http.websocketx.
CloseWebSocketFrame;
import io.netty.handler.codec.http.websocketx.
PongWebSocketFrame;
import io.netty.handler.codec.http.websocketx.
TextWebSocketFrame;
import io.netty.handler.codec.http.websocketx.
WebSocketClientHandshaker;
import io.netty.handler.codec.http.websocketx.
WebSocketFrame;
import io.netty.handler.codec.http.websocketx.
WebSocketHandshakeException;
import io.netty.util.
CharsetUtil;
public class
WebSocketClientHandler extends
SimpleChannelInboundHandler<
Object> {
private final
WebSocketClientHandshaker handshaker;
private
ChannelPromise handshakeFuture;
public
WebSocketClientHandler(
WebSocketClientHandshaker handshaker) {
this.
handshaker =
handshaker;
}
public
ChannelFuture handshakeFuture() {
return
handshakeFuture;
}
@
Override
public void
handlerAdded(
ChannelHandlerContext ctx) {
handshakeFuture =
ctx.
newPromise();
}
@
Override
public void
channelActive(
ChannelHandlerContext ctx) {
handshaker.
handshake(
ctx.
channel());
}
@
Override
public void
channelInactive(
ChannelHandlerContext ctx) {
System.
out.
println("WebSocket Client disconnected!");
}
@
Override
public void
channelRead0(
ChannelHandlerContext ctx,
Object msg) throws
Exception {
Channel ch =
ctx.
channel();
if (!
handshaker.
isHandshakeComplete()) {
try {
handshaker.
finishHandshake(
ch, (
FullHttpResponse)
msg);
System.
out.
println("WebSocket Client connected!");
handshakeFuture.
setSuccess();
} catch (
WebSocketHandshakeException e) {
System.
out.
println("WebSocket Client failed to connect");
handshakeFuture.
setFailure(
e);
}
return;
}
if (
msg instanceof
FullHttpResponse) {
FullHttpResponse response = (
FullHttpResponse)
msg;
throw new
IllegalStateException(
"Unexpected FullHttpResponse (getStatus=" +
response.
status() +
", content=" +
response.
content().
toString(
CharsetUtil.
UTF_8) + ')');
}
WebSocketFrame frame = (
WebSocketFrame)
msg;
if (
frame instanceof
TextWebSocketFrame) {
TextWebSocketFrame textFrame = (
TextWebSocketFrame)
frame;
System.
out.
println("WebSocket Client received message: " +
textFrame.
text());
} else if (
frame instanceof
PongWebSocketFrame) {
System.
out.
println("WebSocket Client received pong");
} else if (
frame instanceof
CloseWebSocketFrame) {
System.
out.
println("WebSocket Client received closing");
ch.
close();
}
}
@
Override
public void
exceptionCaught(
ChannelHandlerContext ctx,
Throwable cause) {
cause.
printStackTrace();
if (!
handshakeFuture.
isDone()) {
handshakeFuture.
setFailure(
cause);
}
ctx.
close();
}
}