/*
* 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.api.BinaryFrameSender;
import io.undertow.websockets.api.SendCallback;
import io.undertow.websockets.core.WebSocketFrameType;
import io.undertow.websockets.core.WebSocketMessages;
import org.xnio.ChannelListener;
import org.xnio.channels.StreamSinkChannel;
import org.xnio.streams.ChannelOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
/**
* Default implementation of the {@link BinaryFrameSender}.
*
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
*/
class DefaultBinaryFrameSender extends AbstractSender implements BinaryFrameSender {
DefaultBinaryFrameSender(WebSocketChannelSession session) {
super(session);
}
@Override
protected WebSocketFrameType type() {
return WebSocketFrameType.BINARY;
}
@Override
public void sendBinary(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 sendBinary(final ByteBuffer[] payload, final SendCallback callback) {
try {
final 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 sendBinary(final FileChannel payloadChannel, final int offset, final long length, final SendCallback callback) {
try{
if (length > payloadChannel.size() - offset) {
throw WebSocketMessages.MESSAGES.lengthBiggerThenFileChannel();
}
StreamSinkChannel sink = StreamSinkChannelUtils.applyAsyncSendTimeout(session, createSink(length));
long written = 0;
while (written < length) {
long w = sink.transferFrom(payloadChannel, offset + written, length - written);
if (w == 0) {
final long writtenBytes = written;
sink.getWriteSetter().set(new ChannelListener<StreamSinkChannel>() {
long written = writtenBytes;
@Override
public void handleEvent(StreamSinkChannel sink) {
try {
while (written < length) {
long w = sink.transferFrom(payloadChannel, offset + written, length - written);
if (w == 0) {
sink.resumeWrites();
return;
}
if (w > 0) {
written += w;
}
}
StreamSinkChannelUtils.shutdownAndFlush(sink, callback);
} catch (IOException e) {
StreamSinkChannelUtils.safeNotify(callback, e);
}
}
});
sink.resumeWrites();
return;
}
if (w > 0) {
written += w;
}
}
StreamSinkChannelUtils.shutdownAndFlush(sink, callback);
} catch (IOException e) {
StreamSinkChannelUtils.safeNotify(callback, e);
}
}
@Override
public void sendBinary(ByteBuffer payload) throws IOException {
checkBlockingAllowed();
StreamSinkChannel sink = createSink(payload.remaining());
StreamSinkChannelUtils.send(sink, payload);
}
@Override
public void sendBinary(ByteBuffer[] payload) throws IOException {
checkBlockingAllowed();
long length = StreamSinkChannelUtils.payloadLength(payload);
StreamSinkChannel sink = createSink(length);
StreamSinkChannelUtils.send(sink, payload);
}
@Override
public OutputStream sendBinary(long payloadSize) throws IOException {
checkBlockingAllowed();
return new ChannelOutputStream(createSink(payloadSize));
}
}