/* * JBoss, Home of Professional Open Source. * Copyright 2014 Red Hat, Inc., and individual contributors * as indicated by the @author tags. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package io.undertow.protocols.ajp; import java.util.Deque; import java.util.Iterator; import java.util.List; import io.undertow.server.protocol.framed.FramePriority; import io.undertow.server.protocol.framed.SendFrameHeader; /** * AJP frame priority * @author Stuart Douglas */ class AjpClientFramePriority implements FramePriority<AjpClientChannel, AbstractAjpClientStreamSourceChannel, AbstractAjpClientStreamSinkChannel>{ public static AjpClientFramePriority INSTANCE = new AjpClientFramePriority(); @Override public boolean insertFrame(AbstractAjpClientStreamSinkChannel newFrame, List<AbstractAjpClientStreamSinkChannel> pendingFrames) { if(newFrame instanceof AjpClientRequestClientStreamSinkChannel) { SendFrameHeader header = ((AjpClientRequestClientStreamSinkChannel) newFrame).generateSendFrameHeader(); if(header.getByteBuffer() == null) { //we clear the header, as we want to generate a new real header when the flow control window is updated ((AjpClientRequestClientStreamSinkChannel) newFrame).clearHeader(); return false; } } pendingFrames.add(newFrame); return true; } @Override public void frameAdded(AbstractAjpClientStreamSinkChannel addedFrame, List<AbstractAjpClientStreamSinkChannel> pendingFrames, Deque<AbstractAjpClientStreamSinkChannel> holdFrames) { Iterator<AbstractAjpClientStreamSinkChannel> it = holdFrames.iterator(); while (it.hasNext()){ AbstractAjpClientStreamSinkChannel pending = it.next(); if(pending instanceof AjpClientRequestClientStreamSinkChannel) { SendFrameHeader header = ((AjpClientRequestClientStreamSinkChannel) pending).generateSendFrameHeader(); if(header.getByteBuffer() != null) { pendingFrames.add(pending); it.remove(); } else { //we clear the header, as we want to generate a new real header when the flow control window is updated ((AjpClientRequestClientStreamSinkChannel) pending).clearHeader(); } } } } }