writeMenu() — netty Function Reference

Architecture documentation for the writeMenu() function in HttpUploadServerHandler.java from the netty codebase.

Function java Buffer Telemetry called by 1

Entity Profile

Buffer→ Telemetry→ writeMenu() — netty Function Reference

Dependency Diagram

graph TD
  d1e50d33_7f97_e02f_a49f_0d6fd3b1bffa["writeMenu()"]
  15610e19_8d3a_d230_9604_65cc0397e9e9["HttpUploadServerHandler"]
  d1e50d33_7f97_e02f_a49f_0d6fd3b1bffa -->|defined in| 15610e19_8d3a_d230_9604_65cc0397e9e9
  98681448_b82b_1b97_25a8_c44670111876["channelRead0()"]
  98681448_b82b_1b97_25a8_c44670111876 -->|calls| d1e50d33_7f97_e02f_a49f_0d6fd3b1bffa
  style d1e50d33_7f97_e02f_a49f_0d6fd3b1bffa fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

example/src/main/java/io/netty/example/http/upload/HttpUploadServerHandler.java lines 352–446

    private void writeMenu(ChannelHandlerContext ctx) {
        // print several HTML forms
        // Convert the response content to a ChannelBuffer.
        responseContent.setLength(0);

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

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

        // GET
        responseContent.append("<CENTER>GET FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
        responseContent.append("<FORM ACTION=\"/formget\" METHOD=\"GET\">");
        responseContent.append("<input type=hidden name=getform value=\"GET\">");
        responseContent.append("<table border=\"0\">");
        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
        responseContent
                .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
        responseContent.append("</td></tr>");
        responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
        responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
        responseContent.append("</table></FORM>\r\n");
        responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");

        // POST
        responseContent.append("<CENTER>POST FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
        responseContent.append("<FORM ACTION=\"/formpost\" METHOD=\"POST\">");
        responseContent.append("<input type=hidden name=getform value=\"POST\">");
        responseContent.append("<table border=\"0\">");
        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
        responseContent
                .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
        responseContent.append("<tr><td>Fill with file (only file name will be transmitted): <br> "
                + "<input type=file name=\"myfile\">");
        responseContent.append("</td></tr>");
        responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
        responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
        responseContent.append("</table></FORM>\r\n");
        responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");

        // POST with enctype="multipart/form-data"
        responseContent.append("<CENTER>POST MULTIPART FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
        responseContent.append("<FORM ACTION=\"/formpostmultipart\" ENCTYPE=\"multipart/form-data\" METHOD=\"POST\">");
        responseContent.append("<input type=hidden name=getform value=\"POST\">");
        responseContent.append("<table border=\"0\">");
        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
        responseContent
                .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
        responseContent.append("<tr><td>Fill with file: <br> <input type=file name=\"myfile\">");
        responseContent.append("</td></tr>");
        responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
        responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
        responseContent.append("</table></FORM>\r\n");
        responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");

        responseContent.append("</body>");
        responseContent.append("</html>");

        ByteBuf buf = copiedBuffer(responseContent.toString(), CharsetUtil.UTF_8);
        // Build the response object.
        FullHttpResponse response = new DefaultFullHttpResponse(
                HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);

        response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/html; charset=UTF-8");
        response.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, buf.readableBytes());

        // Decide whether to close the connection or not.