@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable t) {
Channel ch = ctx.channel();
// Prevent recursion when the client close the connection during a write operation. In that
// scenario the sendError will be invoked, but will fail since the channel has already been
// closed
// For an unknown reason,
if (ch.attr(ATTACHMENT) != null
&& Error.class.isAssignableFrom(ch.attr(ATTACHMENT).get().getClass())) {
return;
}
Throwable cause = t.getCause();
if (cause instanceof TooLongFrameException) {
sendError(ctx, BAD_REQUEST, null);
return;
}
ch.attr(ATTACHMENT).set(new Error());
if (ch.isOpen()) {
sendError(ctx, INTERNAL_SERVER_ERROR, null);
}
if (ctx.channel().isActive()) {
sendError(ctx, INTERNAL_SERVER_ERROR, null);
}
}
private void sentOfflineMessage(Channel channel) {
log.trace("Channel was inactive for a long period.");
Boolean isHard = channel.attr(ChannelState.IS_HARD_CHANNEL).get();
if (isHard != null && isHard) {
User user = channel.attr(ChannelState.USER).get();
if (user != null) {
Notification notification =
user.getProfile().getActiveDashboardWidgetByType(Notification.class);
if (notification == null || !notification.notifyWhenOffline) {
Session session = sessionsHolder.userSession.get(user);
if (session.appChannels.size() > 0) {
session.sendMessageToApp(produce(0, DEVICE_WENT_OFFLINE));
}
} else {
String boardType = user.getProfile().getActiveDashBoard().getBoardType();
String dashName = user.getProfile().getActiveDashBoard().getName();
notificationsProcessor.push(
user,
notification,
String.format(
"Your %s went offline. \"%s\" project is disconnected.", boardType, dashName));
}
}
}
}
public void channelRead(final ChannelHandlerContext remoteChannelCtx, final Object msg)
throws Exception {
LoggerUtil.debug(
logger, uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY), "Remote msg", msg);
remainMsgCount++;
if (remainMsgCount <= 5) {
remoteChannelCtx.read();
}
HttpObject ho = (HttpObject) msg;
if (ho instanceof HttpResponse) {
HttpResponse httpResponse = (HttpResponse) ho;
LoggerUtil.info(
forwardRestLogger,
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY),
httpResponse.getStatus(),
httpResponse.getProtocolVersion());
httpResponse.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
httpResponse.headers().set("Proxy-Connection", HttpHeaders.Values.KEEP_ALIVE);
}
if (uaChannel.isActive()) {
uaChannel
.writeAndFlush(ho)
.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
LoggerUtil.debug(
logger,
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY),
"Write to UA finished: " + future.isSuccess());
if (future.isSuccess()) {
remainMsgCount--;
remoteChannelCtx.read();
LoggerUtil.debug(
logger,
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY),
"Fire read again");
} else {
remoteChannelCtx.close();
}
}
});
} else {
remoteChannelCtx.close();
}
}
@Override
public void channelInactive(final ChannelHandlerContext remoteChannelCtx) throws Exception {
LoggerUtil.debug(
logger,
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY),
"Remote channel inactive");
final String remoteAddr =
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY).get().getRemote().getRemoteAddr();
remoteChannelInactiveCallback.remoteChannelInactive(uaChannel, remoteAddr);
remoteChannelCtx.fireChannelInactive();
}
private void handleHTTP(OutPacketMessage msg, ChannelHandlerContext ctx, ChannelPromise promise)
throws IOException {
Channel channel = ctx.channel();
Attribute<Boolean> attr = channel.attr(WRITE_ONCE);
Queue<Packet> queue = msg.getClientHead().getPacketsQueue(msg.getTransport());
if (!channel.isActive() || queue.isEmpty() || !attr.compareAndSet(null, true)) {
promise.setSuccess();
return;
}
ByteBuf out = encoder.allocateBuffer(ctx.alloc());
Boolean b64 = ctx.channel().attr(EncoderHandler.B64).get();
if (b64 != null && b64) {
Integer jsonpIndex = ctx.channel().attr(EncoderHandler.JSONP_INDEX).get();
encoder.encodeJsonP(jsonpIndex, queue, out, ctx.alloc(), 50);
String type = "application/javascript";
if (jsonpIndex == null) {
type = "text/plain";
}
sendMessage(msg, channel, out, type, promise);
} else {
encoder.encodePackets(queue, out, ctx.alloc(), 50);
sendMessage(msg, channel, out, "application/octet-stream", promise);
}
}
public void onMessage(Message message) {
if (message.getType() == MessageType.MSG && message.get(MessageProperty.ROOM).equals("#main")) {
long userId = message.get(MessageProperty.USER_ID);
String name = message.get(MessageProperty.NAME);
UserCredentials userCredentials = null;
if (needsFetchingConnectionData(userId)) {
userCredentials = fetchConnectionDataForUser(name, userId);
}
if (userCredentials != null) {
String id = userCredentials.getId();
Channel channel = connections.get(id.toLowerCase());
if (channel == null || !channel.isActive()) {
try {
channel = createConnection(id, userCredentials.getToken());
} catch (InterruptedException e) {
logger.warn("", e);
}
}
if (channel != null) {
channel.attr(lastMessageAttrKey).set(System.currentTimeMillis());
channel.writeAndFlush(
"PRIVMSG #" + this.channel + " :" + message.get(MessageProperty.TEXT) + "\r\n");
}
}
}
}
@Override
public void exceptionCaught(ChannelHandlerContext remoteChannelCtx, Throwable cause)
throws Exception {
logger.error(
cause.getMessage() + uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY), cause);
remoteChannelCtx.close();
}
@Override
public Channel fetch() {
Channel ch = channels.fetch();
if (ch != null && ch.isActive()) {
if (ch.attr(GlobalConstance.attributeKey).get() == SessionState.Connect) {
return ch;
}
}
return null;
}
private void addOriginHeaders(Channel channel, HttpResponse res) {
if (version != null) {
res.headers().add(HttpHeaders.Names.SERVER, version);
}
if (configuration.getOrigin() != null) {
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_ORIGIN, configuration.getOrigin());
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_CREDENTIALS, Boolean.TRUE);
} else {
String origin = channel.attr(ORIGIN).get();
if (origin != null) {
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_ORIGIN, origin);
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_CREDENTIALS, Boolean.TRUE);
} else {
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_ORIGIN, "*");
}
}
}
private void sendMessage(
HttpMessage msg, Channel channel, ByteBuf out, String type, ChannelPromise promise) {
HttpResponse res = new DefaultHttpResponse(HTTP_1_1, HttpResponseStatus.OK);
res.headers()
.add(CONTENT_TYPE, type)
.add("Set-Cookie", "io=" + msg.getSessionId())
.add(CONNECTION, KEEP_ALIVE);
addOriginHeaders(channel, res);
HttpHeaders.setContentLength(res, out.readableBytes());
// prevent XSS warnings on IE
// https://github.com/LearnBoost/socket.io/pull/1333
String userAgent = channel.attr(EncoderHandler.USER_AGENT).get();
if (userAgent != null && (userAgent.contains(";MSIE") || userAgent.contains("Trident/"))) {
res.headers().add("X-XSS-Protection", "0");
}
sendMessage(msg, channel, out, res, promise);
}
@Override
public void run() {
try {
logger.debug("starting cleanup");
for (Map.Entry<String, Channel> entry : connections.entrySet()) {
Channel channel = entry.getValue();
Long lastMessage = channel.attr(lastMessageAttrKey).get();
if (System.currentTimeMillis() - lastMessage > FIVE_MINUTES) {
channel.disconnect();
connections.remove(entry.getKey());
logger.debug("connection released for {}", entry.getKey());
} else if (!channel.isActive()) {
connections.remove(entry.getKey());
logger.debug("connection released for {}", entry.getKey());
}
}
logger.debug("cleanup complete");
} catch (Exception e) {
logger.error("exception while clean up", e);
}
}
private void a(final Packet var1, final GenericFutureListener[] var2) {
final EnumProtocol var3 = EnumProtocol.a(var1);
final EnumProtocol var4 = (EnumProtocol) k.attr(c).get();
if (var4 != var3) {
g.debug("Disabled auto read");
k.config().setAutoRead(false);
}
if (k.eventLoop().inEventLoop()) {
if (var3 != var4) {
this.a(var3);
}
ChannelFuture var5 = k.writeAndFlush(var1);
if (var2 != null) {
var5.addListeners(var2);
}
var5.addListener(ChannelFutureListener.FIRE_EXCEPTION_ON_FAILURE);
} else {
k.eventLoop()
.execute(
new Runnable() {
@Override
public void run() {
if (var3 != var4) {
class_ek.this.a(var3);
}
ChannelFuture var1x = k.writeAndFlush(var1);
if (var2 != null) {
var1x.addListeners(var2);
}
var1x.addListener(ChannelFutureListener.FIRE_EXCEPTION_ON_FAILURE);
}
});
}
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, UscException ex) throws Exception {
log.trace("UscExceptionHandler channelRead0" + ex);
final Throwable t = ex.getCause();
Channel channel = ctx.channel();
UscRouteIdentifier routeId = ctx.channel().attr(UscPlugin.ROUTE_IDENTIFIER).get();
if (routeId != null) {
// this is a channel using remote channel
if (broker == null) {
broker = UscServiceUtils.getService(UscRouteBrokerService.class);
}
if (broker != null) {
broker.removeLocalSession(routeId);
} else {
log.error(
"Broker service is null! Can't check if it is remote channel message, failed to proccess this exception {}.",
ex);
}
return;
}
SettableFuture<UscSessionImpl> tmp = channel.attr(UscPlugin.SESSION).get();
if (tmp != null) {
UscSessionImpl session = tmp.get();
UscChannelImpl connection = session.getChannel();
// connection is down
if (t instanceof UscConnectionException) {
plugin.getConnectionManager().removeConnection(connection);
} else if (t instanceof UscChannelException) {
// TODO
;
} else if (t instanceof UscSessionException) {
connection.removeSession(session.getSessionId());
}
}
throw ex;
}
@Override
public void encode(ChannelHandlerContext ctx, Packet<PacketListener> packet, ByteBuf output)
throws Exception {
Channel channel = ctx.channel();
EnumProtocol currentProtocol = channel.attr(currentStateAttrKey).get();
final Integer packetId = currentProtocol.a(direction, packet);
if (packetId == null) {
throw new IOException("Can't serialize unregistered packet");
}
ClientBoundMiddlePacket<RecyclableCollection<PacketData>> packetTransformer =
dataRemapperRegistry.getTransformer(currentProtocol, packetId);
if (packetTransformer != null) {
serverdata.clear();
packet.b(serverdata);
if (packetTransformer.needsPlayer()) {
packetTransformer.setPlayer(ChannelUtils.getBukkitPlayer(channel));
}
packetTransformer.readFromServerData(serverdata);
packetTransformer.setLocalStorage(storage);
packetTransformer.handle();
RecyclableCollection<PacketData> data = packetTransformer.toData(version);
try {
for (PacketData packetdata : data) {
ByteBuf senddata = Allocator.allocateBuffer();
senddata.writeByte(
packetIdRegistry.getNewPacketId(currentProtocol, packetdata.getPacketId()));
senddata.writeBytes(packetdata);
ctx.write(senddata);
}
ctx.flush();
} finally {
for (PacketData packetdata : data) {
packetdata.recycle();
}
data.recycle();
}
}
}
public synchronized void addChannel(Channel ch) {
// 标识连接已建立
ch.attr(GlobalConstance.attributeKey).set(SessionState.Connect);
getChannels().add(ch);
int cnt = incrementConn();
// 如果是CMPP端口
if (getEndpointEntity() instanceof CMPPEndpointEntity) {
// 创建持久化Map用于存储发送的message
Map<Long, Message> storedMap =
BDBStoredMapFactoryImpl.INS.buildMap(
getEndpointEntity().getId(), "Session_" + getEndpointEntity().getId());
Map<Long, Message> preSendMap = new HashMap<Long, Message>();
logger.debug(
"Channel added To Endpoint {} .totalCnt:{} ,Channel.ID: {}", endpoint, cnt, ch.id());
if (cnt == 1) {
// 如果是第一个连接。要把上次发送失败的消息取出，再次发送一次
if (storedMap != null && storedMap.size() > 0) {
for (Map.Entry<Long, Message> entry : storedMap.entrySet()) {
preSendMap.put(entry.getKey(), entry.getValue());
}
}
}
CMPPEndpointEntity cmppentity = (CMPPEndpointEntity) getEndpointEntity();
// 将SessinManager放在messageHeaderCodec后边。因为要处理Submit 和 deliver消息的长短信分拆
ch.pipeline()
.addBefore(
CMPPCodecChannelInitializer.codecName,
"sessionStateManager",
new SessionStateManager(cmppentity, storedMap, preSendMap));
// 加载业务handler
bindHandler(ch.pipeline(), cmppentity);
}
}
@Override
public void postProcess(IOTMessage ioTMessage) {
switch (ioTMessage.getMessageType()) {
case ConnectAcknowledgeMessage.MESSAGE_TYPE:
ConnectAcknowledgeMessage conMessage = (ConnectAcknowledgeMessage) ioTMessage;
/** Use the connection acknowledgement message to store session id for persistance. */
Channel channel = getChannel(ioTMessage.getConnectionId());
if (Objects.nonNull(channel)) {
if (MqttConnectReturnCode.CONNECTION_ACCEPTED.equals(conMessage.getReturnCode())) {
channel.attr(ServerImpl.REQUEST_SESSION_ID).set(ioTMessage.getSessionId());
} else {
closeClient(ioTMessage.getConnectionId());
}
}
break;
default:
super.postProcess(ioTMessage);
}
}
@Override
public <X> X getAttribute(String key, Class<X> clz) {
AttributeKey<X> attributeKey = AttributeKey.valueOf(key);
Attribute<X> attribute = channel.attr(attributeKey);
return attribute == null ? null : attribute.get();
}
@Override
public <X, Y extends X> void setAttribute(String key, Class<X> clz, Y value) {
AttributeKey<X> attributeKey = AttributeKey.valueOf(key);
channel.attr(attributeKey).set(value);
}
@Override
public void channelActive(ChannelHandlerContext remoteChannelCtx) throws Exception {
LoggerUtil.debug(
logger, uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY), "Remote channel active");
remoteChannelCtx.read();
}
public synchronized void removeChannel(Channel ch) {
ch.attr(GlobalConstance.attributeKey).set(SessionState.DisConnect);
if (getChannels().remove(ch)) decrementConn();
}
public void a(EnumProtocol var1) {
k.attr(c).set(var1);
k.config().setAutoRead(true);
g.debug("Enabled auto read");
}
