io.undertow.client.http2.Http2ClearClientProvider Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* 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.client.http2;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import io.undertow.client.ClientStatistics;
import io.undertow.conduits.ByteActivityCallback;
import io.undertow.conduits.BytesReceivedStreamSourceConduit;
import io.undertow.conduits.BytesSentStreamSinkConduit;
import org.xnio.ChannelListener;
import org.xnio.IoFuture;
import org.xnio.OptionMap;
import io.undertow.connector.ByteBufferPool;
import io.undertow.connector.PooledByteBuffer;
import org.xnio.StreamConnection;
import org.xnio.XnioIoThread;
import org.xnio.XnioWorker;
import org.xnio.channels.BoundChannel;
import org.xnio.http.HttpUpgrade;
import org.xnio.ssl.XnioSsl;
import io.undertow.UndertowOptions;
import io.undertow.client.ClientCallback;
import io.undertow.client.ClientConnection;
import io.undertow.client.ClientProvider;
import io.undertow.protocols.http2.Http2Channel;
import io.undertow.protocols.http2.Http2Setting;
import io.undertow.util.FlexBase64;
import io.undertow.util.Headers;
/**
* HTTP2 client provider that uses HTTP upgrade rather than ALPN. This provider will only use h2c, and sends an initial
* dummy request to do the initial upgrade.
*
*
*
* @author Stuart Douglas
*/
public class Http2ClearClientProvider implements ClientProvider {
@Override
public void connect(final ClientCallback listener, final URI uri, final XnioWorker worker, final XnioSsl ssl, final ByteBufferPool bufferPool, final OptionMap options) {
connect(listener, null, uri, worker, ssl, bufferPool, options);
}
@Override
public void connect(final ClientCallback listener, final URI uri, final XnioIoThread ioThread, final XnioSsl ssl, final ByteBufferPool bufferPool, final OptionMap options) {
connect(listener, null, uri, ioThread, ssl, bufferPool, options);
}
@Override
public Set handlesSchemes() {
return new HashSet<>(Arrays.asList(new String[]{"h2c"}));
}
@Override
public void connect(final ClientCallback listener, InetSocketAddress bindAddress, final URI uri, final XnioWorker worker, final XnioSsl ssl, final ByteBufferPool bufferPool, final OptionMap options) {
final URI upgradeUri;
try {
upgradeUri = new URI("http", uri.getUserInfo(), uri.getHost(), uri.getPort(), uri.getPath(), uri.getQuery(), uri.getFragment());
} catch (URISyntaxException e) {
listener.failed(new IOException(e));
return;
}
Map headers = createHeaders(options, bufferPool, uri);
HttpUpgrade.performUpgrade(worker, bindAddress, upgradeUri, headers, new Http2ClearOpenListener(bufferPool, options, listener, uri.getHost()), null, options, null).addNotifier(new FailedNotifier(listener), null);
}
@Override
public void connect(final ClientCallback listener, final InetSocketAddress bindAddress, final URI uri, final XnioIoThread ioThread, final XnioSsl ssl, final ByteBufferPool bufferPool, final OptionMap options) {
final URI upgradeUri;
try {
upgradeUri = new URI("http", uri.getUserInfo(), uri.getHost(), uri.getPort(), uri.getPath(), uri.getQuery(), uri.getFragment());
} catch (URISyntaxException e) {
listener.failed(new IOException(e));
return;
}
if (bindAddress != null) {
ioThread.openStreamConnection(bindAddress, new InetSocketAddress(uri.getHost(), uri.getPort()), new ChannelListener() {
@Override
public void handleEvent(StreamConnection channel) {
Map headers = createHeaders(options, bufferPool, uri);
HttpUpgrade.performUpgrade(channel, upgradeUri, headers, new Http2ClearOpenListener(bufferPool, options, listener, uri.getHost()), null).addNotifier(new FailedNotifier(listener), null);
}
}, new ChannelListener() {
@Override
public void handleEvent(BoundChannel channel) {
}
}, options).addNotifier(new FailedNotifier(listener), null);
} else {
ioThread.openStreamConnection(new InetSocketAddress(uri.getHost(), uri.getPort()), new ChannelListener() {
@Override
public void handleEvent(StreamConnection channel) {
Map headers = createHeaders(options, bufferPool, uri);
HttpUpgrade.performUpgrade(channel, upgradeUri, headers, new Http2ClearOpenListener(bufferPool, options, listener, uri.getHost()), null).addNotifier(new FailedNotifier(listener), null);
}
}, new ChannelListener() {
@Override
public void handleEvent(BoundChannel channel) {
}
}, options).addNotifier(new FailedNotifier(listener), null);
}
}
private Map createHeaders(OptionMap options, ByteBufferPool bufferPool, URI uri) {
Map headers = new HashMap<>();
headers.put("HTTP2-Settings", createSettingsFrame(options, bufferPool));
headers.put(Headers.UPGRADE_STRING, Http2Channel.CLEARTEXT_UPGRADE_STRING);
headers.put(Headers.CONNECTION_STRING, "Upgrade, HTTP2-Settings");
headers.put(Headers.HOST_STRING, uri.getHost());
headers.put("X-HTTP2-connect-only", "connect"); //undertow specific header that tells the remote server that this request should be ignored
return headers;
}
public static String createSettingsFrame(OptionMap options, ByteBufferPool bufferPool) {
PooledByteBuffer b = bufferPool.allocate();
try {
ByteBuffer currentBuffer = b.getBuffer();
if (options.contains(UndertowOptions.HTTP2_SETTINGS_HEADER_TABLE_SIZE)) {
pushOption(currentBuffer, Http2Setting.SETTINGS_HEADER_TABLE_SIZE, options.get(UndertowOptions.HTTP2_SETTINGS_HEADER_TABLE_SIZE));
}
if (options.contains(UndertowOptions.HTTP2_SETTINGS_ENABLE_PUSH)) {
pushOption(currentBuffer, Http2Setting.SETTINGS_ENABLE_PUSH, options.get(UndertowOptions.HTTP2_SETTINGS_ENABLE_PUSH) ? 1 : 0);
}
if (options.contains(UndertowOptions.HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS)) {
pushOption(currentBuffer, Http2Setting.SETTINGS_MAX_CONCURRENT_STREAMS, options.get(UndertowOptions.HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS));
}
if (options.contains(UndertowOptions.HTTP2_SETTINGS_INITIAL_WINDOW_SIZE)) {
pushOption(currentBuffer, Http2Setting.SETTINGS_INITIAL_WINDOW_SIZE, options.get(UndertowOptions.HTTP2_SETTINGS_INITIAL_WINDOW_SIZE));
}
if (options.contains(UndertowOptions.HTTP2_SETTINGS_MAX_FRAME_SIZE)) {
pushOption(currentBuffer, Http2Setting.SETTINGS_MAX_FRAME_SIZE, options.get(UndertowOptions.HTTP2_SETTINGS_MAX_FRAME_SIZE));
}
if (options.contains(UndertowOptions.HTTP2_SETTINGS_MAX_HEADER_LIST_SIZE)) {
pushOption(currentBuffer, Http2Setting.SETTINGS_MAX_HEADER_LIST_SIZE, options.get(UndertowOptions.HTTP2_SETTINGS_MAX_HEADER_LIST_SIZE));
} else if(options.contains(UndertowOptions.MAX_HEADER_SIZE)) {
pushOption(currentBuffer, Http2Setting.SETTINGS_MAX_HEADER_LIST_SIZE, options.get(UndertowOptions.MAX_HEADER_SIZE));
}
currentBuffer.flip();
return FlexBase64.encodeStringURL(currentBuffer, false);
} finally {
b.close();
}
}
private static void pushOption(ByteBuffer currentBuffer, int id, int value) {
currentBuffer.put((byte) ((id >> 8) & 0xFF));
currentBuffer.put((byte) (id & 0xFF));
currentBuffer.put((byte) ((value >> 24) & 0xFF));
currentBuffer.put((byte) ((value >> 16) & 0xFF));
currentBuffer.put((byte) ((value >> 8) & 0xFF));
currentBuffer.put((byte) (value & 0xFF));
}
private static class Http2ClearOpenListener implements ChannelListener {
private final ByteBufferPool bufferPool;
private final OptionMap options;
private final ClientCallback listener;
private final String defaultHost;
Http2ClearOpenListener(ByteBufferPool bufferPool, OptionMap options, ClientCallback listener, String defaultHost) {
this.bufferPool = bufferPool;
this.options = options;
this.listener = listener;
this.defaultHost = defaultHost;
}
@Override
public void handleEvent(StreamConnection channel) {
final ClientStatisticsImpl clientStatistics;
//first we set up statistics, if required
if (options.get(UndertowOptions.ENABLE_STATISTICS, false)) {
clientStatistics = new ClientStatisticsImpl();
channel.getSinkChannel().setConduit(new BytesSentStreamSinkConduit(channel.getSinkChannel().getConduit(), new ByteActivityCallback() {
@Override
public void activity(long bytes) {
clientStatistics.written += bytes;
}
}));
channel.getSourceChannel().setConduit(new BytesReceivedStreamSourceConduit(channel.getSourceChannel().getConduit(), new ByteActivityCallback() {
@Override
public void activity(long bytes) {
clientStatistics.read += bytes;
}
}));
} else {
clientStatistics = null;
}
Http2Channel http2Channel = new Http2Channel(channel, null, bufferPool, null, true, true, options);
Http2ClientConnection http2ClientConnection = new Http2ClientConnection(http2Channel, true, defaultHost, clientStatistics, false);
listener.completed(http2ClientConnection);
}
}
private static class FailedNotifier implements IoFuture.Notifier {
private final ClientCallback listener;
FailedNotifier(ClientCallback listener) {
this.listener = listener;
}
@Override
public void notify(IoFuture ioFuture, Object attachment) {
if (ioFuture.getStatus() == IoFuture.Status.FAILED) {
listener.failed(ioFuture.getException());
}
}
}
private static class ClientStatisticsImpl implements ClientStatistics {
private long requestCount, read, written;
public long getRequestCount() {
return requestCount;
}
public void setRequestCount(long requestCount) {
this.requestCount = requestCount;
}
public void setRead(long read) {
this.read = read;
}
public void setWritten(long written) {
this.written = written;
}
@Override
public long getRequests() {
return requestCount;
}
@Override
public long getRead() {
return read;
}
@Override
public long getWritten() {
return written;
}
@Override
public void reset() {
read = 0;
written = 0;
requestCount = 0;
}
}
}