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@ -1,14 +1,12 @@
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package com.baiye.server;
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import cn.hutool.core.util.StrUtil;
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import com.alibaba.fastjson.JSON;
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import com.baiye.request.MessageRequest;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.*;
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import io.netty.handler.codec.http.DefaultFullHttpResponse;
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import io.netty.handler.codec.http.FullHttpRequest;
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import io.netty.handler.codec.http.HttpResponseStatus;
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import io.netty.handler.codec.http.HttpVersion;
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import io.netty.handler.codec.http.*;
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import io.netty.handler.codec.http.websocketx.*;
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import io.netty.util.CharsetUtil;
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import lombok.extern.slf4j.Slf4j;
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@ -22,7 +20,9 @@ import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.Future;
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import java.util.concurrent.TimeUnit;
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import static io.netty.handler.codec.http.HttpResponseStatus.*;
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import static io.netty.handler.codec.http.HttpUtil.isKeepAlive;
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import static io.netty.handler.codec.http.HttpVersion.HTTP_1_1;
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/**
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* @author Enzo
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@ -62,12 +62,12 @@ public class SocketServerHandler extends SimpleChannelInboundHandler<Object> {
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* @throws Exception
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*/
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@Override
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protected void channelRead0(ChannelHandlerContext ctx, Object msg) {
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protected void channelRead0(ChannelHandlerContext ctx, Object msg) {
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if (msg instanceof FullHttpRequest){
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if (msg instanceof FullHttpRequest) {
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//以http请求形式接入，但是走的是websocket
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handleHttpRequest(ctx, (FullHttpRequest) msg);
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}else if (msg instanceof WebSocketFrame){
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} else if (msg instanceof WebSocketFrame) {
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//处理websocket客户端的消息
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handlerWebSocketFrame(ctx, (WebSocketFrame) msg);
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}
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@ -101,7 +101,7 @@ public class SocketServerHandler extends SimpleChannelInboundHandler<Object> {
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* @throws Exception
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*/
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@Override
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public void handlerAdded(ChannelHandlerContext ctx) {
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public void handlerAdded(ChannelHandlerContext ctx) {
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log.info("一个客户端连接......" + ctx.channel().remoteAddress() + Thread.currentThread().getName());
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}
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@ -154,31 +154,39 @@ public class SocketServerHandler extends SimpleChannelInboundHandler<Object> {
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/**
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* 唯一的一次http请求，用于创建websocket
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* */
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*/
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private void handleHttpRequest(ChannelHandlerContext ctx,
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FullHttpRequest req) {
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//要求Upgrade为websocket，过滤掉get/Post
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if (!req.decoderResult().isSuccess()
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|| (!"websocket".equals(req.headers().get("Upgrade")))) {
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//若不是websocket方式，则创建BAD_REQUEST的req，返回给客户端
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sendHttpResponse(ctx, req, new DefaultFullHttpResponse(
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HttpVersion.HTTP_1_1, HttpResponseStatus.BAD_REQUEST));
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// Handle a bad request.
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if (!req.decoderResult().isSuccess()) {
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sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, BAD_REQUEST, Unpooled.EMPTY_BUFFER));
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return;
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}
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// Allow only GET methods.
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if (!HttpMethod.GET.equals(req.method())) {
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sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, FORBIDDEN, Unpooled.EMPTY_BUFFER));
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return;
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}
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// Handshake
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//注意，这条地址别被误导了，其实这里填写什么都无所谓，WS协议消息的接收不受这
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WebSocketServerHandshakerFactory wsFactory = new WebSocketServerHandshakerFactory(
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"ws://localhost:8099/websocket", null, false);
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getWebSocketLocation(req), null, true, 5 * 1024 * 1024);
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handShaker = wsFactory.newHandshaker(req);
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if (handShaker == null) {
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WebSocketServerHandshakerFactory
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.sendUnsupportedVersionResponse(ctx.channel());
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WebSocketServerHandshakerFactory.sendUnsupportedVersionResponse(ctx.channel());
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} else {
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// 通过它构造握手响应消息返回给客户端，
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// 同时将WebSocket相关的编码和解码类动态添加到ChannelPipeline中，用于WebSocket消息的编解码，
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// 添加WebSocketEncoder和WebSocketDecoder之后，服务端就可以自动对WebSocket消息进行编解码了
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handShaker.handshake(ctx.channel(), req);
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}
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}
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/**
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* 拒绝不合法的请求，并返回错误信息
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* */
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*/
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private static void sendHttpResponse(ChannelHandlerContext ctx,
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FullHttpRequest req, DefaultFullHttpResponse res) {
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// 返回应答给客户端
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@ -196,7 +204,7 @@ public class SocketServerHandler extends SimpleChannelInboundHandler<Object> {
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}
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private void handlerWebSocketFrame(ChannelHandlerContext ctx, WebSocketFrame frame){
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private void handlerWebSocketFrame(ChannelHandlerContext ctx, WebSocketFrame frame) {
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// 判断是否关闭链路的指令
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if (frame instanceof CloseWebSocketFrame) {
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handShaker.close(ctx.channel(), (CloseWebSocketFrame) frame.retain());
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@ -219,10 +227,10 @@ public class SocketServerHandler extends SimpleChannelInboundHandler<Object> {
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log.debug("服务端收到：" + request);
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TextWebSocketFrame tws = new TextWebSocketFrame(new Date().toString()
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+ ctx.channel().id() + "：" + request);
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// channelHandlerContext.channel().writeAndFlush(tws);
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// 返回【谁发的发给谁】
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ctx.channel().writeAndFlush(tws);
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ctx.channel().writeAndFlush(tws);
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}
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public static Map<String, Channel> getChannelMap() {
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return CHANNEL_MAP;
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}
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@ -234,4 +242,9 @@ public class SocketServerHandler extends SimpleChannelInboundHandler<Object> {
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public static Map<String, Long> getClientMap() {
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return CLIENT_MAP;
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}
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private static String getWebSocketLocation(FullHttpRequest req) {
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String location = req.headers().get(HttpHeaderNames.HOST) + req.uri();
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return "ws://" + location;
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}
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}
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bynt
2 years ago