@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
ChannelPipeline p = ctx.pipeline();
SocksProtocolVersion version = SocksProtocolVersion.valueOf(in.readByte());
System.out.println(version);
in.resetReaderIndex();
switch (version) {
case SOCKS4a:
p.addLast(new Socks4CmdRequestDecoder());
p.addLast(Socks4MessageEncoder.INSTANCE);
break;
case SOCKS5:
p.addLast(new Socks5InitRequestDecoder());
p.addLast(Socks5MessageEncoder.INSTANCE);
break;
case UNKNOWN:
in.clear();
ctx.close();
return;
}
p.addLast(SocksServerHandler.INSTANCE);
p.remove(this);
}
static void removeIfExists(
ChannelPipeline pipeline, Class<? extends ChannelHandler> handlerClass) {
ChannelHandler channelHandler = pipeline.get(handlerClass);
if (channelHandler != null) {
pipeline.remove(channelHandler);
}
}
private static void ensureThatExceptionHandlerIsLast(ChannelPipeline pipeline) {
ChannelInboundHandler exceptionHandler = ChannelExceptionHandler.getInstance();
if (pipeline.last() != exceptionHandler || pipeline.context(exceptionHandler) == null) {
return;
}
pipeline.remove(exceptionHandler);
pipeline.addLast(exceptionHandler);
}
public static void modifyPipeline() {
ChannelPipeline pipeline = null;
// Creates a FirstHandler instance
FirstHandler firstHandler = new FirstHandler();
// Adds this instance to the ChannelPipeline as “handler1”
pipeline.addLast("handler1", firstHandler);
// Adds an instance of a SecondHandler to the ChannelPipeline in the first slot,
// as “handler2”. It will be placed before the existing “handler1”.
pipeline.addFirst("handler2", new SecondHandler());
// Adds a ThirdHandler instance to the ChannelPipeline in the last slot as “handler3”.
pipeline.addLast("handler3", new ThirdHandler());
// Removes “handler3” by name.
pipeline.remove("handler3");
// Removes the FirstHandler by reference (it’s unique, so its name is not needed).
pipeline.remove(firstHandler);
// Replaces the SecondHandler (“handler2”) with a FourthHandler: “handler4”.
pipeline.replace("handler2", "handler4", new FourthHandler());
}
protected void decode(ChannelHandlerContext context, ByteBuf buffer) throws Exception {
ChannelPipeline pipeline = context.pipeline();
if (detectSsl && SslHandler.isEncrypted(buffer)) {
SSLEngine engine = SSL_SERVER_CONTEXT.getValue().createSSLEngine();
engine.setUseClientMode(false);
pipeline.addLast(
new SslHandler(engine),
new ChunkedWriteHandler(),
new PortUnificationServerHandler(delegatingHttpRequestHandler, false, detectGzip));
} else {
int magic1 = buffer.getUnsignedByte(buffer.readerIndex());
int magic2 = buffer.getUnsignedByte(buffer.readerIndex() + 1);
if (detectGzip && magic1 == 31 && magic2 == 139) {
pipeline.addLast(
new JZlibEncoder(ZlibWrapper.GZIP),
new JdkZlibDecoder(ZlibWrapper.GZIP),
new PortUnificationServerHandler(delegatingHttpRequestHandler, detectSsl, false));
} else if (isHttp(magic1, magic2)) {
NettyUtil.initHttpHandlers(pipeline);
pipeline.addLast(delegatingHttpRequestHandler);
if (BuiltInServer.LOG.isDebugEnabled()) {
pipeline.addLast(
new ChannelOutboundHandlerAdapter() {
@Override
public void write(
ChannelHandlerContext context, Object message, ChannelPromise promise)
throws Exception {
if (message instanceof HttpResponse) {
// BuiltInServer.LOG.debug("OUT HTTP:\n" + message);
HttpResponse response = (HttpResponse) message;
BuiltInServer.LOG.debug(
"OUT HTTP: "
+ response.getStatus().code()
+ " "
+ response.headers().get("Content-type"));
}
super.write(context, message, promise);
}
});
}
} else if (magic1 == 'C' && magic2 == 'H') {
buffer.skipBytes(2);
pipeline.addLast(new CustomHandlerDelegator());
} else {
BuiltInServer.LOG.warn("unknown request, first two bytes " + magic1 + " " + magic2);
context.close();
}
}
// must be after new channels handlers addition (netty bug?)
ensureThatExceptionHandlerIsLast(pipeline);
pipeline.remove(this);
context.fireChannelRead(buffer);
}
/**
* Handle the web socket handshake for the web socket specification <a href=
* "http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17">HyBi versions 13-17</a>.
* Versions 13-17 share the same wire protocol.
*
* <p>Browser request to the server:
*
* <pre>
* GET /chat HTTP/1.1
* Host: server.example.com
* Upgrade: websocket
* Connection: Upgrade
* Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
* Sec-WebSocket-Origin: http://example.com
* Sec-WebSocket-Protocol: chat, superchat
* Sec-WebSocket-Version: 13
* </pre>
*
* <p>Server response:
*
* <pre>
* HTTP/1.1 101 Switching Protocols
* Upgrade: websocket
* Connection: Upgrade
* Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=
* Sec-WebSocket-Protocol: chat
* </pre>
*
* @param channel Channel
* @param req HTTP request
*/
@Override
public ChannelFuture handshake(Channel channel, HttpRequest req) {
if (logger.isDebugEnabled()) {
logger.debug(String.format("Channel %s WS Version 13 server handshake", channel.getId()));
}
HttpResponse res = new DefaultHttpResponse(HTTP_1_1, HttpResponseStatus.SWITCHING_PROTOCOLS);
String key = req.getHeader(Names.SEC_WEBSOCKET_KEY);
if (key == null) {
throw new WebSocketHandshakeException("not a WebSocket request: missing key");
}
String acceptSeed = key + WEBSOCKET_13_ACCEPT_GUID;
byte[] sha1 = WebSocketUtil.sha1(acceptSeed.getBytes(CharsetUtil.US_ASCII));
String accept = WebSocketUtil.base64(sha1);
if (logger.isDebugEnabled()) {
logger.debug(
String.format("WS Version 13 Server Handshake key: %s. Response: %s.", key, accept));
}
res.setStatus(HttpResponseStatus.SWITCHING_PROTOCOLS);
res.addHeader(Names.UPGRADE, WEBSOCKET.toLowerCase());
res.addHeader(Names.CONNECTION, Names.UPGRADE);
res.addHeader(Names.SEC_WEBSOCKET_ACCEPT, accept);
String protocol = req.getHeader(Names.SEC_WEBSOCKET_PROTOCOL);
if (protocol != null) {
res.addHeader(Names.SEC_WEBSOCKET_PROTOCOL, selectSubprotocol(protocol));
}
ChannelFuture future = channel.write(res);
// Upgrade the connection and send the handshake response.
ChannelPipeline p = channel.getPipeline();
if (p.get(HttpChunkAggregator.class) != null) {
p.remove(HttpChunkAggregator.class);
}
p.replace(
HttpRequestDecoder.class,
"wsdecoder",
new WebSocket13FrameDecoder(true, allowExtensions, this.getMaxFramePayloadLength()));
p.replace(HttpResponseEncoder.class, "wsencoder", new WebSocket13FrameEncoder(false));
return future;
}
@Override
protected void channelRead0(ChannelHandlerContext context, ByteBuf message) throws Exception {
ByteBuf buffer = getBufferIfSufficient(message, UUID_LENGTH, context);
if (buffer == null) {
message.release();
} else {
UUID uuid = new UUID(buffer.readLong(), buffer.readLong());
for (BinaryRequestHandler customHandler : BinaryRequestHandler.EP_NAME.getExtensions()) {
if (uuid.equals(customHandler.getId())) {
ChannelPipeline pipeline = context.pipeline();
pipeline.addLast(customHandler.getInboundHandler());
ensureThatExceptionHandlerIsLast(pipeline);
pipeline.remove(this);
context.fireChannelRead(buffer);
break;
}
}
}
}
public void sendLoginSuccess(int status, Player player) {
ByteBuf buf = channel.alloc().buffer(11);
buf.writeByte(player.getRights());
buf.writeByte(0);
buf.writeByte(0);
buf.writeByte(0);
buf.writeByte(0);
buf.writeByte(0);
buf.writeByte(0);
buf.writeShort(player.getId());
buf.writeByte(1);
buf.writeByte(1);
ChannelPipeline pipeline = channel.pipeline();
GameSession session = new GameSession(server, channel, player);
RsChannelHandler handler = pipeline.get(RsChannelHandler.class);
handler.setSession(session);
pipeline.remove(ReadTimeoutHandler.class); // TODO a different timeout mechanism is used in-game
LoginResponse response = new LoginResponse(status, buf);
channel.write(response);
pipeline.addFirst(
new GameFrameEncoder(outRandom),
new GameMessageEncoder(server.getCodecRepository()),
new GameFrameDecoder(inRandom),
new GameMessageDecoder(server.getCodecRepository()));
if (displayMode == 0 || displayMode == 1)
player.getInterfaceSet().setDisplayMode(DisplayMode.FIXED);
else player.getInterfaceSet().setDisplayMode(DisplayMode.RESIZABLE);
session.init();
}
NetSocket createNetSocket() {
DefaultNetSocket socket =
new DefaultNetSocket(vertx, channel, context, server.tcpHelper, false);
Map<Channel, DefaultNetSocket> connectionMap = new HashMap<Channel, DefaultNetSocket>(1);
connectionMap.put(channel, socket);
// Flush out all pending data
endReadAndFlush();
// remove old http handlers and replace the old handler with one that handle plain sockets
ChannelPipeline pipeline = channel.pipeline();
ChannelHandler compressor = pipeline.get(HttpChunkContentCompressor.class);
if (compressor != null) {
pipeline.remove(compressor);
}
pipeline.remove("httpDecoder");
if (pipeline.get("chunkedWriter") != null) {
pipeline.remove("chunkedWriter");
}
channel
.pipeline()
.replace(
"handler",
"handler",
new VertxNetHandler(server.vertx, connectionMap) {
@Override
public void exceptionCaught(ChannelHandlerContext chctx, Throwable t)
throws Exception {
// remove from the real mapping
server.connectionMap.remove(channel);
super.exceptionCaught(chctx, t);
}
@Override
public void channelInactive(ChannelHandlerContext chctx) throws Exception {
// remove from the real mapping
server.connectionMap.remove(channel);
super.channelInactive(chctx);
}
@Override
public void channelRead(ChannelHandlerContext chctx, Object msg) throws Exception {
if (msg instanceof HttpContent) {
ReferenceCountUtil.release(msg);
return;
}
super.channelRead(chctx, msg);
}
});
// check if the encoder can be removed yet or not.
if (lastWriteFuture == null) {
channel.pipeline().remove("httpEncoder");
} else {
lastWriteFuture.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
channel.pipeline().remove("httpEncoder");
}
});
}
return socket;
}
@Override
public final boolean trySend(HttpResponse message) {
try {
final HttpRequestWrapper nettyRequest = (HttpRequestWrapper) message.getRequest();
final FullHttpRequest req = nettyRequest.req;
final ChannelHandlerContext ctx = nettyRequest.ctx;
final HttpResponseStatus status = HttpResponseStatus.valueOf(message.getStatus());
if (message.getStatus() >= 400 && message.getStatus() < 600) {
sendHttpResponse(
ctx, req, new DefaultFullHttpResponse(req.getProtocolVersion(), status), false);
close();
return true;
}
if (message.getRedirectPath() != null) {
sendHttpRedirect(ctx, req, message.getRedirectPath());
close();
return true;
}
FullHttpResponse res;
if (message.getStringBody() != null)
res =
new DefaultFullHttpResponse(
req.getProtocolVersion(),
status,
Unpooled.wrappedBuffer(message.getStringBody().getBytes()));
else if (message.getByteBufferBody() != null)
res =
new DefaultFullHttpResponse(
req.getProtocolVersion(),
status,
Unpooled.wrappedBuffer(message.getByteBufferBody()));
else res = new DefaultFullHttpResponse(req.getProtocolVersion(), status);
if (message.getCookies() != null) {
final ServerCookieEncoder enc = ServerCookieEncoder.STRICT;
for (final Cookie c : message.getCookies())
HttpHeaders.setHeader(res, COOKIE, enc.encode(getNettyCookie(c)));
}
if (message.getHeaders() != null) {
for (final Map.Entry<String, String> h : message.getHeaders().entries())
HttpHeaders.setHeader(res, h.getKey(), h.getValue());
}
if (message.getContentType() != null) {
String ct = message.getContentType();
if (message.getCharacterEncoding() != null)
ct = ct + "; charset=" + message.getCharacterEncoding().name();
HttpHeaders.setHeader(res, CONTENT_TYPE, ct);
}
final boolean sseStarted = message.shouldStartActor();
if (trackSession(sseStarted)) {
final String sessionId = UUID.randomUUID().toString();
res.headers()
.add(SET_COOKIE, ServerCookieEncoder.STRICT.encode(SESSION_COOKIE_KEY, sessionId));
startSession(sessionId, actorContext);
}
if (!sseStarted) {
final String stringBody = message.getStringBody();
long contentLength = 0L;
if (stringBody != null) contentLength = stringBody.getBytes().length;
else {
final ByteBuffer byteBufferBody = message.getByteBufferBody();
if (byteBufferBody != null) contentLength = byteBufferBody.remaining();
}
res.headers().add(CONTENT_LENGTH, contentLength);
}
final HttpStreamActorAdapter httpStreamActorAdapter;
if (sseStarted)
// This will copy the request content, which must still be referenceable, doing before the
// request handler
// unallocates it (unfortunately it is explicitly reference-counted in Netty)
httpStreamActorAdapter = new HttpStreamActorAdapter(ctx, req);
else httpStreamActorAdapter = null;
sendHttpResponse(ctx, req, res, false);
if (sseStarted) {
if (httpResponseEncoderName != null) {
ctx.pipeline().remove(httpResponseEncoderName);
} else {
final ChannelPipeline pl = ctx.pipeline();
final List<String> handlerKeysToBeRemoved = new ArrayList<>();
for (final Map.Entry<String, ChannelHandler> e : pl) {
if (e.getValue() instanceof HttpResponseEncoder)
handlerKeysToBeRemoved.add(e.getKey());
}
for (final String k : handlerKeysToBeRemoved) pl.remove(k);
}
try {
message.getFrom().send(new HttpStreamOpened(httpStreamActorAdapter.ref(), message));
} catch (SuspendExecution e) {
throw new AssertionError(e);
}
}
return true;
} finally {
if (actor != null) actor.unwatch();
}
}
public static void removeTimeoutHandler(ChannelPipeline pipeline) {
if (pipeline.get(READ_TIMEOUT_HANDLER_NAME) != null) {
pipeline.remove(READ_TIMEOUT_HANDLER_NAME);
}
}
