baseFrame.netty.atest.HttpHelloWorldServerHandler.java Source code

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Here is the source code for baseFrame.netty.atest.HttpHelloWorldServerHandler.java

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/*
 * Copyright 2013 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.
 */
package baseFrame.netty.atest;

import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.*;
import io.netty.handler.codec.http.HttpHeaders.Names;
import io.netty.handler.codec.http.HttpHeaders.Values;

import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import static io.netty.handler.codec.http.HttpResponseStatus.CONTINUE;
import static io.netty.handler.codec.http.HttpVersion.HTTP_1_1;

public class HttpHelloWorldServerHandler extends ChannelHandlerAdapter {

    private final StringBuilder responseContent = new StringBuilder();
    private FullHttpResponse response = null;

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        ctx.flush();
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {
        if (msg instanceof HttpRequest) {
            HttpRequest request = (HttpRequest) msg;
            if (HttpHeaders.is100ContinueExpected(request)) {
                ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
            }
            boolean keepAlive = HttpHeaders.isKeepAlive(request);

            // Encode the cookie.
            String cookieString = request.headers().get(Names.COOKIE);
            if (cookieString != null) {
                Set<Cookie> cookies = CookieDecoder.decode(cookieString);
                if (!cookies.isEmpty()) {
                    // Reset the cookies if necessary.
                    for (Cookie cookie : cookies) {
                        response.headers().add(Names.SET_COOKIE, ServerCookieEncoder.encode(cookie));
                    }
                }
            } else {
                // Browser sent no cookie.  Add some.
                /*  response.headers().add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.encode("key1", "value1"));
                  response.headers().add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.encode("key2", "value2"));*/
            }

            if (HttpHeaders.is100ContinueExpected(request)) {
                send100Continue(ctx);
            }

            responseContent.append("VERSION: ").append(request.getProtocolVersion()).append("\r\n");
            //responseContent.append("HOSTNAME: ").append(request.headers().).append("\r\n");
            responseContent.append("REQUEST_URI: ").append(request.getUri()).append("\r\n\r\n");

            HttpHeaders headers = request.headers();
            if (!headers.isEmpty()) {
                for (Entry<String, String> h : headers) {
                    CharSequence key = h.getKey();
                    CharSequence value = h.getValue();
                    responseContent.append("HEADER: ").append(key).append(" = ").append(value).append("\r\n");
                }
                responseContent.append("\r\n");
            }

            QueryStringDecoder queryStringDecoder = new QueryStringDecoder(request.getUri());
            Map<String, List<String>> params = queryStringDecoder.parameters();
            if (!params.isEmpty()) {
                for (Entry<String, List<String>> p : params.entrySet()) {
                    String key = p.getKey();
                    List<String> vals = p.getValue();
                    for (String val : vals) {
                        responseContent.append("PARAM: ").append(key).append(" = ").append(val).append("\r\n");
                    }
                }
                responseContent.append("\r\n");
            }

            response = setResponse(response, responseContent);

            if (!keepAlive) {
                ctx.write(response).addListener(ChannelFutureListener.CLOSE);
            } else {
                response.headers().set(Names.CONNECTION, Values.KEEP_ALIVE);
                ctx.write(response);
            }
        }

        if (msg instanceof HttpContent) {
            HttpContent content = (HttpContent) msg;

            if (msg instanceof LastHttpContent) {

            }
        }
    }

    public FullHttpResponse setResponse(FullHttpResponse response, StringBuilder responseContent) {

        LoginNameServiceHelper ffHelper = new LoginNameServiceHelper();
        List<String> dtos = ffHelper.findDomain();

        StringBuilder res = new StringBuilder();
        res.append(responseContent);

        // create Pseudo Menu
        res.append("<html>");
        res.append("<head>");
        res.append("<title>Netty Test Form</title>\r\n");
        res.append("</head>\r\n");
        res.append("<body bgcolor=white><style>td{font-size: 12pt;}</style>");

        res.append("<table border=\"0\">");
        res.append("<tr>");
        res.append("<td>");
        res.append("<h1>Netty Test Form</h1>");
        res.append("Choose one FORM");
        res.append("</td>");
        res.append("</tr>");

        for (String ss : dtos) {
            res.append("<tr>");
            res.append("<td>");
            res.append(ss);
            res.append("</td>");
            res.append("</tr>");
        }

        res.append("</table>\r\n");

        response = new DefaultFullHttpResponse(HTTP_1_1, HttpResponseStatus.OK,
                Unpooled.wrappedBuffer(res.toString().getBytes()));
        response.headers().set(Names.CONTENT_TYPE, "text/html; charset=UTF-8");
        response.headers().set(Names.CONTENT_LENGTH, response.content().readableBytes());
        return response;
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        cause.printStackTrace();
        ctx.close();
    }

    private static void send100Continue(ChannelHandlerContext ctx) {
        FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, CONTINUE);
        ctx.write(response);
    }
}