/** Example of reading request by chunk and getting values from chunk to chunk */
private void readHttpDataChunkByChunk() {
try {
while (decoder.hasNext()) {
InterfaceHttpData data = decoder.next();
if (data != null) {
// check if current HttpData is a FileUpload and previously set as partial
if (partialContent == data) {
logger.info(" 100% (FinalSize: " + partialContent.length() + ")");
partialContent = null;
}
try {
// new value
writeHttpData(data);
} finally {
data.release();
}
}
}
// Check partial decoding for a FileUpload
InterfaceHttpData data = decoder.currentPartialHttpData();
if (data != null) {
StringBuilder builder = new StringBuilder();
if (partialContent == null) {
partialContent = (HttpData) data;
if (partialContent instanceof FileUpload) {
builder
.append("Start FileUpload: ")
.append(((FileUpload) partialContent).getFilename())
.append(" ");
} else {
builder.append("Start Attribute: ").append(partialContent.getName()).append(" ");
}
builder.append("(DefinedSize: ").append(partialContent.definedLength()).append(")");
}
if (partialContent.definedLength() > 0) {
builder
.append(" ")
.append(partialContent.length() * 100 / partialContent.definedLength())
.append("% ");
logger.info(builder.toString());
} else {
builder.append(" ").append(partialContent.length()).append(" ");
logger.info(builder.toString());
}
}
} catch (EndOfDataDecoderException e1) {
// end
responseContent.append("\r\n\r\nEND OF CONTENT CHUNK BY CHUNK\r\n\r\n");
}
}
private void writeResponse(Channel channel) {
// Convert the response content to a ChannelBuffer.
ByteBuf buf = copiedBuffer(responseContent.toString(), CharsetUtil.UTF_8);
responseContent.setLength(0);
// Decide whether to close the connection or not.
boolean close =
request.headers().contains(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE, true)
|| request.protocolVersion().equals(HttpVersion.HTTP_1_0)
&& !request
.headers()
.contains(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE, true);
// Build the response object.
FullHttpResponse response =
new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);
response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/plain; charset=UTF-8");
if (!close) {
// There's no need to add 'Content-Length' header
// if this is the last response.
response.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, buf.readableBytes());
}
Set<Cookie> cookies;
String value = request.headers().getAndConvert(HttpHeaderNames.COOKIE);
if (value == null) {
cookies = Collections.emptySet();
} else {
cookies = ServerCookieDecoder.STRICT.decode(value);
}
if (!cookies.isEmpty()) {
// Reset the cookies if necessary.
for (Cookie cookie : cookies) {
response
.headers()
.add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.STRICT.encode(cookie));
}
}
// Write the response.
ChannelFuture future = channel.writeAndFlush(response);
// Close the connection after the write operation is done if necessary.
if (close) {
future.addListener(ChannelFutureListener.CLOSE);
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
logger.log(Level.WARNING, responseContent.toString(), cause);
ctx.channel().close();
}
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());
// Write the response.
ctx.channel().writeAndFlush(response);
}
