divconq.bus.net.WebSocketServerIndexPage.java Source code

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/* ************************************************************************
#
#  DivConq
#
#  http://divconq.com/
#
#  Copyright:
#    Copyright 2014 eTimeline, LLC. All rights reserved.
#
#  License:
#    See the license.txt file in the project's top-level directory for details.
#
#  Authors:
#    * Andy White
#
************************************************************************ */
package divconq.bus.net;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.util.CharsetUtil;

/**
 * TODO cleanup for dc stuff
 * Generates the demo HTML page which is served at localhost
 */
public final class WebSocketServerIndexPage {

    private static final String NEWLINE = "\r\n";

    public static ByteBuf getContent(String webSocketLocation) {
        return Unpooled.copiedBuffer("<html><head><title>Web Socket Test</title></head>" + NEWLINE + "<body>"
                + NEWLINE + "<script type=\"text/javascript\">" + NEWLINE + "var socket;" + NEWLINE
                + "if (!window.WebSocket) {" + NEWLINE + "  window.WebSocket = window.MozWebSocket;" + NEWLINE + '}'
                + NEWLINE + "if (window.WebSocket) {" + NEWLINE + "  socket = new WebSocket(\"" + webSocketLocation
                + "\");" + NEWLINE + "  socket.onmessage = function(event) {" + NEWLINE
                + "    var ta = document.getElementById('responseText');" + NEWLINE
                + "    ta.value = ta.value + '\\n' + event.data" + NEWLINE + "  };" + NEWLINE
                + "  socket.onopen = function(event) {" + NEWLINE
                + "    var ta = document.getElementById('responseText');" + NEWLINE
                + "    ta.value = \"Web Socket opened!\";" + NEWLINE + "  };" + NEWLINE
                + "  socket.onclose = function(event) {" + NEWLINE
                + "    var ta = document.getElementById('responseText');" + NEWLINE
                + "    ta.value = ta.value + \"Web Socket closed\"; " + NEWLINE + "  };" + NEWLINE + "} else {"
                + NEWLINE + "  alert(\"Your browser does not support Web Socket.\");" + NEWLINE + '}' + NEWLINE
                + NEWLINE + "function send(message) {" + NEWLINE + "  if (!window.WebSocket) { return; }" + NEWLINE
                + "  if (socket.readyState == WebSocket.OPEN) {" + NEWLINE + "    socket.send(message);" + NEWLINE
                + "  } else {" + NEWLINE + "    alert(\"The socket is not open.\");" + NEWLINE + "  }" + NEWLINE
                + '}' + NEWLINE + "</script>" + NEWLINE + "<form onsubmit=\"return false;\">" + NEWLINE
                + "<input type=\"text\" name=\"message\" value=\"Hello, World!\"/>"
                + "<input type=\"button\" value=\"Send Web Socket Data\"" + NEWLINE
                + "       onclick=\"send(this.form.message.value)\" />" + NEWLINE + "<h3>Output</h3>" + NEWLINE
                + "<textarea id=\"responseText\" style=\"width:500px;height:300px;\"></textarea>" + NEWLINE
                + "</form>" + NEWLINE + "</body>" + NEWLINE + "</html>" + NEWLINE, CharsetUtil.UTF_8);
    }

    private WebSocketServerIndexPage() {
        // Unused
    }
}