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| Original file line number | Diff line number | Diff line change |
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| #!/bin/sh | ||
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| ./gradlew netty-websocket-http2-example:runLwsClient |
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168 changes: 168 additions & 0 deletions
168
...c/main/java/com/jauntsdn/netty/handler/codec/http2/websocketx/example/lwsclient/Main.java
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright 2020 - present Maksym Ostroverkhov. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
|
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| package com.jauntsdn.netty.handler.codec.http2.websocketx.example.lwsclient; | ||
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| import static io.netty.channel.ChannelHandler.Sharable; | ||
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| import com.jauntsdn.netty.handler.codec.http2.websocketx.Http2WebSocketClientHandler; | ||
| import com.jauntsdn.netty.handler.codec.http2.websocketx.Http2WebSocketClientHandshaker; | ||
| import com.jauntsdn.netty.handler.codec.http2.websocketx.example.Security; | ||
| import io.netty.bootstrap.Bootstrap; | ||
| import io.netty.channel.*; | ||
| import io.netty.channel.nio.NioEventLoopGroup; | ||
| import io.netty.channel.socket.SocketChannel; | ||
| import io.netty.channel.socket.nio.NioSocketChannel; | ||
| import io.netty.handler.codec.http.websocketx.TextWebSocketFrame; | ||
| import io.netty.handler.codec.http.websocketx.WebSocketDecoderConfig; | ||
| import io.netty.handler.codec.http2.DefaultHttp2Headers; | ||
| import io.netty.handler.codec.http2.Http2FrameCodec; | ||
| import io.netty.handler.codec.http2.Http2FrameCodecBuilder; | ||
| import io.netty.handler.codec.http2.Http2Headers; | ||
| import io.netty.handler.ssl.SslContext; | ||
| import io.netty.handler.ssl.SslHandler; | ||
| import io.netty.util.concurrent.Future; | ||
| import io.netty.util.concurrent.GenericFutureListener; | ||
| import io.netty.util.concurrent.ScheduledFuture; | ||
| import java.net.InetSocketAddress; | ||
| import java.util.concurrent.TimeUnit; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
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| public class Main { | ||
| private static final Logger logger = LoggerFactory.getLogger(Main.class); | ||
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| public static void main(String[] args) throws Exception { | ||
| String host = System.getProperty("HOST", "libwebsockets.org"); | ||
| int port = Integer.parseInt(System.getProperty("PORT", "443")); | ||
| InetSocketAddress address = new InetSocketAddress(host, port); | ||
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| logger.info("\n==> libwebsockets.org websocket-over-http2 client\n"); | ||
| logger.info("\n==> Remote address: {}:{}", host, port); | ||
| logger.info("\n==> Dumb increment demo of https://libwebsockets.org/testserver/"); | ||
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| final SslContext sslContext = Security.clientSslContext(); | ||
| Channel channel = | ||
| new Bootstrap() | ||
| .group(new NioEventLoopGroup()) | ||
| .channel(NioSocketChannel.class) | ||
| .handler( | ||
| new ChannelInitializer<SocketChannel>() { | ||
| @Override | ||
| protected void initChannel(SocketChannel ch) { | ||
| SslHandler sslHandler = sslContext.newHandler(ch.alloc()); | ||
| Http2FrameCodecBuilder http2FrameCodecBuilder = | ||
| Http2FrameCodecBuilder.forClient(); | ||
| http2FrameCodecBuilder.initialSettings().initialWindowSize(10_000); | ||
| Http2FrameCodec http2FrameCodec = http2FrameCodecBuilder.build(); | ||
| Http2WebSocketClientHandler http2WebSocketClientHandler = | ||
| Http2WebSocketClientHandler.builder() | ||
| .decoderConfig( | ||
| WebSocketDecoderConfig.newBuilder() | ||
| .allowExtensions(true) | ||
| .allowMaskMismatch(true) | ||
| .build()) | ||
| .handshakeTimeoutMillis(15_000) | ||
| .compression(true) | ||
| .build(); | ||
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| ch.pipeline().addLast(sslHandler, http2FrameCodec, http2WebSocketClientHandler); | ||
| } | ||
| }) | ||
| .connect(address) | ||
| .sync() | ||
| .channel(); | ||
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| Http2WebSocketClientHandshaker handShaker = Http2WebSocketClientHandshaker.create(channel); | ||
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| Http2Headers headers = | ||
| new DefaultHttp2Headers().set("user-agent", "jauntsdn-websocket-http2-client/0.1.0"); | ||
| ChannelFuture handshake = | ||
| handShaker.handshake( | ||
| "/", "dumb-increment-protocol", headers, new WebSocketDumbIncrementHandler()); | ||
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| handshake.addListener(new WebSocketFutureListener()); | ||
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| Channel echoWebSocketChannel = handshake.channel(); | ||
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| EventLoopGroup eventLoop = echoWebSocketChannel.eventLoop(); | ||
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| echoWebSocketChannel.closeFuture().sync(); | ||
| logger.info("==> Websocket closed. Terminating client..."); | ||
| eventLoop.shutdownGracefully(); | ||
| logger.info("==> Client terminated"); | ||
| } | ||
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| @Sharable | ||
| private static class WebSocketDumbIncrementHandler | ||
| extends SimpleChannelInboundHandler<TextWebSocketFrame> { | ||
| private ScheduledFuture<?> sendResetFuture; | ||
| private ScheduledFuture<?> receiveReportFuture; | ||
| private int receiveCounter; | ||
| private int receiveValue; | ||
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| @Override | ||
| public void channelActive(ChannelHandlerContext ctx) throws Exception { | ||
| sendResetFuture = | ||
| ctx.executor() | ||
| .scheduleAtFixedRate( | ||
| () -> { | ||
| ctx.writeAndFlush(new TextWebSocketFrame("reset\n")); | ||
| logger.info("==> Sent reset counter websocket frame"); | ||
| }, | ||
| 5_000, | ||
| 5_000, | ||
| TimeUnit.MILLISECONDS); | ||
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| receiveReportFuture = | ||
| ctx.executor() | ||
| .scheduleAtFixedRate( | ||
| () -> | ||
| logger.info( | ||
| "==> Received {} frames, latest value: {}", receiveCounter, receiveValue), | ||
| 1_000, | ||
| 1_000, | ||
| TimeUnit.MILLISECONDS); | ||
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| super.channelActive(ctx); | ||
| } | ||
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| @Override | ||
| public void channelInactive(ChannelHandlerContext ctx) throws Exception { | ||
| sendResetFuture.cancel(true); | ||
| receiveReportFuture.cancel(true); | ||
| super.channelInactive(ctx); | ||
| } | ||
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| @Override | ||
| protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame webSocketFrame) { | ||
| receiveValue = Integer.parseInt(webSocketFrame.text()); | ||
| receiveCounter++; | ||
| } | ||
| } | ||
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| private static class WebSocketFutureListener | ||
| implements GenericFutureListener<Future<? super Void>> { | ||
| @Override | ||
| public void operationComplete(Future<? super Void> future) { | ||
| if (future.isSuccess()) { | ||
| logger.info("==> Websocket channel future success"); | ||
| } else { | ||
| logger.info("==> Websocket channel future error: {}", future.cause().toString()); | ||
| } | ||
| } | ||
| } | ||
| } |
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