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com.sun.webkit.network.HTTP2Loader Maven / Gradle / Ivy
/*
* Copyright (c) 2019, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.webkit.network;
import com.sun.javafx.logging.PlatformLogger.Level;
import com.sun.javafx.logging.PlatformLogger;
import com.sun.javafx.tk.Toolkit;
import com.sun.webkit.Invoker;
import com.sun.webkit.LoadListenerClient;
import com.sun.webkit.WebPage;
import java.io.EOFException;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.SequenceInputStream;
import java.io.UnsupportedEncodingException;
import java.lang.annotation.Native;
import java.net.ConnectException;
import java.net.CookieHandler;
import java.net.HttpRetryException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.NoRouteToHostException;
import java.net.SocketException;
import java.net.SocketTimeoutException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLDecoder;
import java.net.UnknownHostException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse.BodyHandler;
import java.net.http.HttpResponse.BodySubscriber;
import java.net.http.HttpResponse;
import java.net.http.HttpTimeoutException;
import java.nio.ByteBuffer;
import java.security.AccessControlException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.time.Duration;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Vector;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage;
import java.util.concurrent.Flow;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.zip.GZIPInputStream;
import java.util.zip.InflaterInputStream;
import javax.net.ssl.SSLHandshakeException;
import static com.sun.webkit.network.URLs.newURL;
import static java.net.http.HttpClient.Redirect;
import static java.net.http.HttpClient.Version;
import static java.net.http.HttpResponse.BodyHandlers;
import static java.net.http.HttpResponse.BodySubscribers;
final class HTTP2Loader extends URLLoaderBase {
private static final PlatformLogger logger =
PlatformLogger.getLogger(URLLoader.class.getName());
private final WebPage webPage;
private final boolean asynchronous;
private String url;
private String method;
private final String headers;
private FormDataElement[] formDataElements;
private final long data;
private volatile boolean canceled = false;
private final CompletableFuture response;
// Use singleton instance of HttpClient to get the maximum benefits
@SuppressWarnings("removal")
private final static HttpClient HTTP_CLIENT =
AccessController.doPrivileged((PrivilegedAction) () -> HttpClient.newBuilder()
.version(Version.HTTP_2) // this is the default
.followRedirects(Redirect.NEVER) // WebCore handles redirection
.connectTimeout(Duration.ofSeconds(30)) // FIXME: Add a property to control the timeout
.cookieHandler(CookieHandler.getDefault())
.build());
// Singleton instance of direct ByteBuffer to transfer downloaded bytes from
// Java to native
private static final int DEFAULT_BUFSIZE = 40 * 1024;
private final static ByteBuffer BUFFER;
static {
@SuppressWarnings("removal")
int bufSize = AccessController.doPrivileged(
(PrivilegedAction) () ->
Integer.valueOf(System.getProperty("jdk.httpclient.bufsize", Integer.toString(DEFAULT_BUFSIZE))));
BUFFER = ByteBuffer.allocateDirect(bufSize);
}
/**
* Creates a new {@code HTTP2Loader}.
*/
static HTTP2Loader create(WebPage webPage,
ByteBufferPool byteBufferPool,
boolean asynchronous,
String url,
String method,
String headers,
FormDataElement[] formDataElements,
long data) {
if (url.startsWith("http://") || url.startsWith("https://")) {
return new HTTP2Loader(
webPage,
byteBufferPool,
asynchronous,
url,
method,
headers,
formDataElements,
data);
}
return null;
}
// following 2 methods can be generalized and keep a common
// implementation with URLLoader.java
private String[] getCustomHeaders() {
final var loc = Locale.getDefault();
String lang = "";
if (!loc.equals(Locale.US) && !loc.equals(Locale.ENGLISH)) {
lang = loc.getCountry().isEmpty() ?
loc.getLanguage() + ",":
loc.getLanguage() + "-" + loc.getCountry() + ",";
}
return new String[] { "Accept-Language", lang.toLowerCase() + "en-us;q=0.8,en;q=0.7",
"Accept-Encoding", "gzip, inflate",
"Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7",
};
}
private String[] getRequestHeaders() {
return Arrays.stream(headers.split("\n"))
.flatMap(s -> Stream.of(s.split(":", 2))) // split from first occurance of :
.toArray(String[]::new);
}
private URI toURI() throws MalformedURLException {
URI uriObj;
try {
uriObj = new URI(this.url);
} catch(URISyntaxException | IllegalArgumentException e) {
// slow path
try {
var urlObj = newURL(this.url);
uriObj = new URI(
urlObj.getProtocol(),
urlObj.getUserInfo(),
urlObj.getHost(),
urlObj.getPort(),
urlObj.getPath(),
urlObj.getQuery(),
urlObj.getRef());
} catch(URISyntaxException | MalformedURLException | IllegalArgumentException ex) {
throw new MalformedURLException(this.url);
}
}
return uriObj;
}
private HttpRequest.BodyPublisher getFormDataPublisher() {
if (this.formDataElements == null) {
return HttpRequest.BodyPublishers.noBody();
}
final var formDataElementsStream = new Vector();
final AtomicLong length = new AtomicLong();
for (final var formData : formDataElements) {
try {
formData.open();
length.addAndGet(formData.getSize());
formDataElementsStream.add(formData.getInputStream());
} catch(IOException ex) {
return null;
}
}
final var stream = new SequenceInputStream(formDataElementsStream.elements());
final var streamBodyPublisher = HttpRequest.BodyPublishers.ofInputStream(() -> stream);
// Forwarding implementation to send didSendData notification
// to WebCore. Otherwise `formDataPublisher = streamBodyPublisher`
// can do the job.
final var formDataPublisher = new HttpRequest.BodyPublisher() {
@Override
public long contentLength() {
// streaming or fixed length
return length.longValue() <= Integer.MAX_VALUE ? length.longValue() : -1;
}
@Override
public void subscribe(Flow.Subscriber subscriber) {
streamBodyPublisher.subscribe(new Flow.Subscriber() {
@Override
public void onComplete() {
subscriber.onComplete();
}
@Override
public void onError(Throwable th) {
subscriber.onError(th);
}
@Override
public void onNext(ByteBuffer bytes) {
subscriber.onNext(bytes);
didSendData(bytes.limit(), length.longValue());
}
@Override
public void onSubscribe(Flow.Subscription subscription) {
subscriber.onSubscribe(subscription);
}
});
}
};
return formDataPublisher;
}
// InputStream based subscriber is used to handle gzip|inflate encoded body. Since InputStream based subscriber is costly interms
// of memory usage and thread usage, use only when response content-encoding is set to gzip|inflate.
// There will be 2 threads involved while reading data from InputStream provided by BodySubscriber.
// 1. The main worker which downloads HTTP data and writes to stream
// 2. Other worker which reads data from the InputStream(getBody.thenAcceptAsync)
// For the better efficiency, we should consider using java.util.zip.Inflater directly
// to deal with gzip and inflate encoded data.
private InputStream createZIPStream(final String type, InputStream in) throws IOException {
if ("gzip".equalsIgnoreCase(type))
return new GZIPInputStream(in);
else if ("deflate".equalsIgnoreCase(type))
return new InflaterInputStream(in);
return in;
}
private BodySubscriber createZIPEncodedBodySubscriber(final String contentEncoding) {
// Discard body if content type is unknown
if (!("gzip".equalsIgnoreCase(contentEncoding)
|| "inflate".equalsIgnoreCase(contentEncoding))) {
logger.severe(String.format("Unknown encoding type '%s' found, discarding", contentEncoding));
return BodySubscribers.discarding();
}
final BodySubscriber streamSubscriber = BodySubscribers.ofInputStream();
final CompletionStage unzipTask = streamSubscriber.getBody().thenAcceptAsync(is -> {
try (
// To AutoClose the InputStreams
final InputStream stream = is;
final InputStream in = createZIPStream(contentEncoding, stream);
) {
while (!canceled) {
// same as URLLoader.java
final byte[] buf = new byte[8 * 1024];
final int read = in.read(buf);
if (read < 0) {
didFinishLoading();
break;
}
didReceiveData(buf, read);
}
} catch (IOException ex) {
didFail(ex);
}
});
return new BodySubscriber() {
@Override
public void onComplete() {
streamSubscriber.onComplete();
}
@Override
public void onError(Throwable th) {
streamSubscriber.onError(th);
}
@Override
public void onNext(List bytes) {
streamSubscriber.onNext(bytes);
}
@Override
public void onSubscribe(Flow.Subscription subscription) {
streamSubscriber.onSubscribe(subscription);
}
@Override
public CompletionStage getBody() {
return streamSubscriber.getBody().thenCombine(unzipTask, (t, u) -> null);
}
};
}
// Normal plain body handler, simple, easy to use and pass data to downstream.
private BodySubscriber createNormalBodySubscriber() {
final BodySubscriber normalBodySubscriber = BodySubscribers.fromSubscriber(new Flow.Subscriber>() {
private Flow.Subscription subscription;
private final AtomicBoolean subscribed = new AtomicBoolean();
@Override
public void onComplete() {
didFinishLoading();
}
@Override
public void onError(Throwable th) {}
@Override
public void onNext(final List bytes) {
didReceiveData(bytes);
requestIfNotCancelled();
}
@Override
public void onSubscribe(Flow.Subscription subscription) {
if (!subscribed.compareAndSet(false, true)) {
subscription.cancel();
} else {
this.subscription = subscription;
requestIfNotCancelled();
}
}
private void requestIfNotCancelled() {
if (canceled) {
subscription.cancel();
} else {
subscription.request(1);
}
}
});
return normalBodySubscriber;
}
private BodySubscriber getBodySubscriber(final String contentEncoding) {
return contentEncoding.isEmpty() ?
createNormalBodySubscriber() : createZIPEncodedBodySubscriber(contentEncoding);
}
private HTTP2Loader(WebPage webPage,
ByteBufferPool byteBufferPool,
boolean asynchronous,
String url,
String method,
String headers,
FormDataElement[] formDataElements,
long data)
{
this.webPage = webPage;
this.asynchronous = asynchronous;
this.url = url;
this.method = method;
this.headers = headers;
this.formDataElements = formDataElements;
this.data = data;
URI uri;
try {
uri = toURI();
} catch(MalformedURLException e) {
this.response = null;
didFail(e);
return;
}
final var request = HttpRequest.newBuilder()
.uri(uri)
.headers(getRequestHeaders()) // headers from WebCore
.headers(getCustomHeaders()) // headers set by us
.version(Version.HTTP_2) // this is the default
.method(method, getFormDataPublisher())
.build();
final BodyHandler bodyHandler = rsp -> {
if(!handleRedirectionIfNeeded(rsp)) {
didReceiveResponse(rsp);
}
return getBodySubscriber(getContentEncoding(rsp));
};
// Run the HttpClient in the page's access control context
@SuppressWarnings("removal")
var tmpResponse = AccessController.doPrivileged((PrivilegedAction>) () -> {
return HTTP_CLIENT.sendAsync(request, bodyHandler)
.thenAccept($ -> {})
.exceptionally(ex -> didFail(ex.getCause()));
}, webPage.getAccessControlContext());
this.response = tmpResponse;
if (!asynchronous) {
waitForRequestToComplete();
}
}
/**
* Cancels this loader.
*/
@Override
public void fwkCancel() {
if (logger.isLoggable(Level.FINEST)) {
logger.finest(String.format("data: [0x%016X]", data));
}
canceled = true;
}
private void callBackIfNotCanceled(final Runnable r) {
Invoker.getInvoker().invokeOnEventThread(() -> {
if (!canceled) {
r.run();
}
});
}
private void waitForRequestToComplete() {
// Wait for the response using nested event loop. Once the response
// arrives, nested event loop will be terminated.
final Object key = new Object();
this.response.handle((r, th) -> {
Invoker.getInvoker().invokeOnEventThread(() ->
Toolkit.getToolkit().exitNestedEventLoop(key, null));
return null;
});
Toolkit.getToolkit().enterNestedEventLoop(key);
// No need to join, nested event loop takes care of
// blocking the caller until response arrives.
// this.response.join();
}
private boolean handleRedirectionIfNeeded(final HttpResponse.ResponseInfo rsp) {
switch(rsp.statusCode()) {
case 301: // Moved Permanently
case 302: // Found
case 303: // See Other
case 307: // Temporary Redirect
willSendRequest(rsp);
return true;
case 304: // Not Modified
didReceiveResponse(rsp);
didFinishLoading();
return true;
}
return false;
}
private static long getContentLength(final HttpResponse.ResponseInfo rsp) {
return rsp.headers().firstValueAsLong("content-length").orElse(-1);
}
private static String getContentType(final HttpResponse.ResponseInfo rsp) {
return rsp.headers().firstValue("content-type").orElse("application/octet-stream");
}
private static String getContentEncoding(final HttpResponse.ResponseInfo rsp) {
return rsp.headers().firstValue("content-encoding").orElse("");
}
private static String getHeadersAsString(final HttpResponse.ResponseInfo rsp) {
return rsp.headers()
.map()
.entrySet()
.stream()
.map(e -> String.format("%s:%s", e.getKey(), e.getValue().stream().collect(Collectors.joining(","))))
.collect(Collectors.joining("\n")) + "\n";
}
private void willSendRequest(final HttpResponse.ResponseInfo rsp) {
callBackIfNotCanceled(() -> {
twkWillSendRequest(
rsp.statusCode(),
getContentType(rsp),
"",
getContentLength(rsp),
getHeadersAsString(rsp),
this.url,
data);
});
}
private void didReceiveResponse(final HttpResponse.ResponseInfo rsp) {
callBackIfNotCanceled(() -> {
twkDidReceiveResponse(
rsp.statusCode(),
getContentType(rsp),
"",
getContentLength(rsp),
getHeadersAsString(rsp),
this.url,
data);
});
}
private ByteBuffer getDirectBuffer(int size) {
ByteBuffer dbb = BUFFER;
// Though the chance of reaching here is rare, handle the
// case by allocating a tmp direct buffer.
if (size > dbb.capacity()) {
dbb = ByteBuffer.allocateDirect(size);
}
return dbb.clear();
}
private ByteBuffer copyToDirectBuffer(final ByteBuffer bb) {
return getDirectBuffer(bb.limit()).put(bb).flip();
}
// another variant to use from createZIPEncodedBodySubscriber
private void didReceiveData(final byte[] bytes, int size) {
callBackIfNotCanceled(() -> {
notifyDidReceiveData(getDirectBuffer(size).put(bytes, 0, size).flip());
});
}
private void didReceiveData(final List bytes) {
callBackIfNotCanceled(() -> bytes.stream()
.map(this::copyToDirectBuffer)
.forEach(this::notifyDidReceiveData)
);
}
private void notifyDidReceiveData(ByteBuffer byteBuffer) {
Invoker.getInvoker().checkEventThread();
if (logger.isLoggable(Level.FINEST)) {
logger.finest(String.format(
"byteBuffer: [%s], "
+ "position: [%s], "
+ "remaining: [%s], "
+ "data: [0x%016X]",
byteBuffer,
byteBuffer.position(),
byteBuffer.remaining(),
data));
}
twkDidReceiveData(byteBuffer, byteBuffer.position(), byteBuffer.remaining(), data);
}
private void didFinishLoading() {
callBackIfNotCanceled(this::notifyDidFinishLoading);
}
private void notifyDidFinishLoading() {
Invoker.getInvoker().checkEventThread();
if (logger.isLoggable(Level.FINEST)) {
logger.finest(String.format("data: [0x%016X]", data));
}
twkDidFinishLoading(data);
}
private Void didFail(final Throwable th) {
callBackIfNotCanceled(() -> {
// FIXME: simply copied from URLLoader.java, it should be
// retwritten using if..else rather than throw.
int errorCode;
try {
throw th;
} catch (MalformedURLException ex) {
errorCode = LoadListenerClient.MALFORMED_URL;
} catch (@SuppressWarnings("removal") AccessControlException ex) {
errorCode = LoadListenerClient.PERMISSION_DENIED;
} catch (UnknownHostException ex) {
errorCode = LoadListenerClient.UNKNOWN_HOST;
} catch (NoRouteToHostException ex) {
errorCode = LoadListenerClient.NO_ROUTE_TO_HOST;
} catch (ConnectException ex) {
errorCode = LoadListenerClient.CONNECTION_REFUSED;
} catch (SocketException ex) {
errorCode = LoadListenerClient.CONNECTION_RESET;
} catch (SSLHandshakeException ex) {
errorCode = LoadListenerClient.SSL_HANDSHAKE;
} catch (SocketTimeoutException | HttpTimeoutException ex) {
errorCode = LoadListenerClient.CONNECTION_TIMED_OUT;
} catch (FileNotFoundException ex) {
errorCode = LoadListenerClient.FILE_NOT_FOUND;
} catch (Throwable ex) {
errorCode = LoadListenerClient.UNKNOWN_ERROR;
}
notifyDidFail(errorCode, url, th.getMessage());
});
return null;
}
private void notifyDidFail(int errorCode, String url, String message) {
Invoker.getInvoker().checkEventThread();
if (logger.isLoggable(Level.FINEST)) {
logger.finest(String.format(
"errorCode: [%d], "
+ "url: [%s], "
+ "message: [%s], "
+ "data: [0x%016X]",
errorCode,
url,
message,
data));
}
twkDidFail(errorCode, url, message, data);
}
private void didSendData(final long totalBytesSent,
final long totalBytesToBeSent)
{
callBackIfNotCanceled(() -> notifyDidSendData(totalBytesSent, totalBytesToBeSent));
}
private void notifyDidSendData(long totalBytesSent,
long totalBytesToBeSent)
{
Invoker.getInvoker().checkEventThread();
if (logger.isLoggable(Level.FINEST)) {
logger.finest(String.format(
"totalBytesSent: [%d], "
+ "totalBytesToBeSent: [%d], "
+ "data: [0x%016X]",
totalBytesSent,
totalBytesToBeSent,
data));
}
twkDidSendData(totalBytesSent, totalBytesToBeSent, data);
}
}
