/*
* Copyright 2013 JBoss, by Red Hat, Inc
*
* 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.websockets.impl;
import io.undertow.websockets.core.FragmentedMessageChannel;
import io.undertow.websockets.core.StreamSinkFrameChannel;
import io.undertow.websockets.api.FragmentedTextFrameSender;
import io.undertow.websockets.api.SendCallback;
import io.undertow.websockets.core.WebSocketMessages;
import org.xnio.channels.BlockingWritableByteChannel;
import org.xnio.channels.StreamSinkChannel;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* Default {@link FragmentedTextFrameSender} implementation which use a {@link io.undertow.websockets.core.WebSocketChannel} for the write
* operations.
*
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
*/
final class DefaultFragmentedTextFrameSender extends DefaultTextFrameSender implements FragmentedTextFrameSender {
private FragmentedMessageChannel channel;
private boolean finalFragment;
public DefaultFragmentedTextFrameSender(WebSocketChannelSession session){
super(session);
}
@Override
protected StreamSinkFrameChannel createSink(long payloadSize) throws IOException {
if (session.closeFrameSent) {
WebSocketMessages.MESSAGES.closeFrameSentBefore();
}
if (channel == null) {
channel = session.getChannel().sendFragmentedText();
}
StreamSinkFrameChannel sink = channel.send(payloadSize, finalFragment);
return sink;
}
@Override
public void finalFragment() {
finalFragment = true;
}
@Override
public void sendText(final ByteBuffer payload, final SendCallback callback) {
try {
StreamSinkChannel sink = StreamSinkChannelUtils.applyAsyncSendTimeout(session, createSink(payload.remaining()));
StreamSinkChannelUtils.send(sink, payload, callback);
} catch (IOException e) {
StreamSinkChannelUtils.safeNotify(callback, e);
}
}
@Override
public void sendText(final ByteBuffer[] payload, final SendCallback callback) {
try {
long length = StreamSinkChannelUtils.payloadLength(payload);
StreamSinkChannel sink = StreamSinkChannelUtils.applyAsyncSendTimeout(session, createSink(length));
StreamSinkChannelUtils.send(sink, payload, callback);
} catch (IOException e) {
StreamSinkChannelUtils.safeNotify(callback, e);
}
}
@Override
public void sendText(ByteBuffer payload) throws IOException {
checkBlockingAllowed();
StreamSinkChannel sink = createSink(payload.remaining());
BlockingWritableByteChannel channel = new BlockingWritableByteChannel(sink);
while(payload.hasRemaining()) {
channel.write(payload);
}
sink.shutdownWrites();
channel.flush();
channel.close();
}
@Override
public void sendText(ByteBuffer[] payload) throws IOException {
checkBlockingAllowed();
long length = StreamSinkChannelUtils.payloadLength(payload);
StreamSinkChannel sink = createSink(length);
BlockingWritableByteChannel channel = new BlockingWritableByteChannel(sink);
long written = 0;
while(written < length) {
long w = channel.write(payload);
if (w > 0) {
written += w;
}
}
sink.shutdownWrites();
channel.flush();
channel.close();
}
}