author | michaelm |
Fri, 09 Dec 2016 11:35:02 +0000 | |
changeset 42460 | 7133f144981a |
child 43730 | b6847c320451 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.incubator.http.internal.common; |
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|
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import jdk.internal.misc.InnocuousThread; |
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import sun.net.NetProperties; |
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import javax.net.ssl.SSLParameters; |
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import java.io.ByteArrayOutputStream; |
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import java.io.Closeable; |
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import java.io.IOException; |
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import java.io.PrintStream; |
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import java.io.UnsupportedEncodingException; |
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import java.net.NetPermission; |
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import java.net.URI; |
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import java.net.URLPermission; |
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import java.nio.ByteBuffer; |
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import java.nio.charset.StandardCharsets; |
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import java.security.AccessController; |
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import java.security.PrivilegedAction; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Optional; |
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import java.util.Set; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.CompletableFuture; |
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import java.util.concurrent.Executor; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.LinkedBlockingQueue; |
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import java.util.function.Predicate; |
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/** |
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* Miscellaneous utilities |
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*/ |
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public final class Utils { |
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/** |
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* Allocated buffer size. Must never be higher than 16K. But can be lower |
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* if smaller allocation units preferred. HTTP/2 mandates that all |
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* implementations support frame payloads of at least 16K. |
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*/ |
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public static final int DEFAULT_BUFSIZE = 16 * 1024; |
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public static final int BUFSIZE = getIntegerNetProperty( |
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"jdk.httpclient.bufsize", DEFAULT_BUFSIZE |
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); |
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private static final Set<String> DISALLOWED_HEADERS_SET = Set.of( |
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"authorization", "connection", "cookie", "content-length", |
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"date", "expect", "from", "host", "origin", "proxy-authorization", |
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"referer", "user-agent", "upgrade", "via", "warning"); |
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public static final Predicate<String> |
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ALLOWED_HEADERS = header -> !Utils.DISALLOWED_HEADERS_SET.contains(header); |
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|
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public static final Predicate<String> |
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ALL_HEADERS = header -> true; |
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public static ByteBuffer getBuffer() { |
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return ByteBuffer.allocate(BUFSIZE); |
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} |
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public static IOException getIOException(Throwable t) { |
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if (t instanceof IOException) { |
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return (IOException) t; |
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} |
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Throwable cause = t.getCause(); |
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if (cause != null) { |
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return getIOException(cause); |
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} |
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return new IOException(t); |
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} |
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/** |
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* We use the same buffer for reading all headers and dummy bodies in an Exchange. |
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*/ |
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public static ByteBuffer getExchangeBuffer() { |
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ByteBuffer buf = getBuffer(); |
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// Force a read the first time it is used |
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buf.limit(0); |
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return buf; |
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} |
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|
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/** |
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* Puts position to limit and limit to capacity so we can resume reading |
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* into this buffer, but if required > 0 then limit may be reduced so that |
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* no more than required bytes are read next time. |
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*/ |
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static void resumeChannelRead(ByteBuffer buf, int required) { |
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int limit = buf.limit(); |
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buf.position(limit); |
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int capacity = buf.capacity() - limit; |
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if (required > 0 && required < capacity) { |
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buf.limit(limit + required); |
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} else { |
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buf.limit(buf.capacity()); |
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} |
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} |
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private Utils() { } |
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|
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public static ExecutorService innocuousThreadPool() { |
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return Executors.newCachedThreadPool( |
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(r) -> InnocuousThread.newThread("DefaultHttpClient", r)); |
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} |
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132 |
|
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// ABNF primitives defined in RFC 7230 |
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private static final boolean[] tchar = new boolean[256]; |
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private static final boolean[] fieldvchar = new boolean[256]; |
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136 |
|
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static { |
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char[] allowedTokenChars = |
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("!#$%&'*+-.^_`|~0123456789" + |
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"abcdefghijklmnopqrstuvwxyz" + |
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray(); |
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for (char c : allowedTokenChars) { |
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tchar[c] = true; |
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} |
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145 |
for (char c = 0x21; c < 0xFF; c++) { |
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fieldvchar[c] = true; |
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} |
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fieldvchar[0x7F] = false; // a little hole (DEL) in the range |
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} |
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150 |
|
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/* |
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* Validates a RFC 7230 field-name. |
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*/ |
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public static boolean isValidName(String token) { |
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for (int i = 0; i < token.length(); i++) { |
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char c = token.charAt(i); |
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if (c > 255 || !tchar[c]) { |
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return false; |
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159 |
} |
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} |
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return !token.isEmpty(); |
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162 |
} |
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163 |
|
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/* |
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* Validates a RFC 7230 field-value. |
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166 |
* |
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167 |
* "Obsolete line folding" rule |
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168 |
* |
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* obs-fold = CRLF 1*( SP / HTAB ) |
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170 |
* |
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* is not permitted! |
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172 |
*/ |
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public static boolean isValidValue(String token) { |
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boolean accepted = true; |
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for (int i = 0; i < token.length(); i++) { |
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char c = token.charAt(i); |
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if (c > 255) { |
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return false; |
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} |
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if (accepted) { |
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181 |
if (c == ' ' || c == '\t') { |
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182 |
accepted = false; |
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183 |
} else if (!fieldvchar[c]) { |
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184 |
return false; // forbidden byte |
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|
185 |
} |
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186 |
} else { |
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187 |
if (c != ' ' && c != '\t') { |
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188 |
if (fieldvchar[c]) { |
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|
189 |
accepted = true; |
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|
190 |
} else { |
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|
191 |
return false; // forbidden byte |
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|
192 |
} |
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|
193 |
} |
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|
194 |
} |
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|
195 |
} |
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196 |
return accepted; |
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197 |
} |
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|
198 |
|
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199 |
/** |
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200 |
* Returns the security permission required for the given details. |
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201 |
* If method is CONNECT, then uri must be of form "scheme://host:port" |
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202 |
*/ |
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|
203 |
public static URLPermission getPermission(URI uri, |
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|
204 |
String method, |
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|
205 |
Map<String, List<String>> headers) { |
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|
206 |
StringBuilder sb = new StringBuilder(); |
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|
207 |
|
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|
208 |
String urlstring, actionstring; |
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|
209 |
|
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|
210 |
if (method.equals("CONNECT")) { |
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|
211 |
urlstring = uri.toString(); |
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|
212 |
actionstring = "CONNECT"; |
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|
213 |
} else { |
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214 |
sb.append(uri.getScheme()) |
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|
215 |
.append("://") |
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|
216 |
.append(uri.getAuthority()) |
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|
217 |
.append(uri.getPath()); |
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|
218 |
urlstring = sb.toString(); |
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|
219 |
|
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|
220 |
sb = new StringBuilder(); |
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|
221 |
sb.append(method); |
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|
222 |
if (headers != null && !headers.isEmpty()) { |
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|
223 |
sb.append(':'); |
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|
224 |
Set<String> keys = headers.keySet(); |
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|
225 |
boolean first = true; |
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|
226 |
for (String key : keys) { |
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|
227 |
if (!first) { |
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|
228 |
sb.append(','); |
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|
229 |
} |
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|
230 |
sb.append(key); |
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|
231 |
first = false; |
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|
232 |
} |
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|
233 |
} |
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|
234 |
actionstring = sb.toString(); |
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|
235 |
} |
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|
236 |
return new URLPermission(urlstring, actionstring); |
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|
237 |
} |
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|
238 |
|
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|
239 |
public static void checkNetPermission(String target) { |
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|
240 |
SecurityManager sm = System.getSecurityManager(); |
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|
241 |
if (sm == null) { |
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|
242 |
return; |
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|
243 |
} |
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|
244 |
NetPermission np = new NetPermission(target); |
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|
245 |
sm.checkPermission(np); |
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|
246 |
} |
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|
247 |
|
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248 |
public static int getIntegerNetProperty(String name, int defaultValue) { |
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249 |
return AccessController.doPrivileged((PrivilegedAction<Integer>) () -> |
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250 |
NetProperties.getInteger(name, defaultValue)); |
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|
251 |
} |
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|
252 |
|
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253 |
static String getNetProperty(String name) { |
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|
254 |
return AccessController.doPrivileged((PrivilegedAction<String>) () -> |
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|
255 |
NetProperties.get(name)); |
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|
256 |
} |
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|
257 |
|
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|
258 |
public static SSLParameters copySSLParameters(SSLParameters p) { |
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259 |
SSLParameters p1 = new SSLParameters(); |
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260 |
p1.setAlgorithmConstraints(p.getAlgorithmConstraints()); |
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261 |
p1.setCipherSuites(p.getCipherSuites()); |
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262 |
p1.setEnableRetransmissions(p.getEnableRetransmissions()); |
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263 |
p1.setEndpointIdentificationAlgorithm(p.getEndpointIdentificationAlgorithm()); |
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264 |
p1.setMaximumPacketSize(p.getMaximumPacketSize()); |
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265 |
p1.setNeedClientAuth(p.getNeedClientAuth()); |
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String[] protocols = p.getProtocols(); |
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|
267 |
if (protocols != null) { |
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|
268 |
p1.setProtocols(protocols.clone()); |
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269 |
} |
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|
270 |
p1.setSNIMatchers(p.getSNIMatchers()); |
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|
271 |
p1.setServerNames(p.getServerNames()); |
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272 |
p1.setUseCipherSuitesOrder(p.getUseCipherSuitesOrder()); |
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273 |
p1.setWantClientAuth(p.getWantClientAuth()); |
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|
274 |
return p1; |
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|
275 |
} |
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|
276 |
|
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277 |
/** |
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|
278 |
* Set limit to position, and position to mark. |
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279 |
*/ |
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|
280 |
public static void flipToMark(ByteBuffer buffer, int mark) { |
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|
281 |
buffer.limit(buffer.position()); |
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|
282 |
buffer.position(mark); |
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|
283 |
} |
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|
284 |
|
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|
285 |
public static String stackTrace(Throwable t) { |
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|
286 |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
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|
287 |
String s = null; |
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|
288 |
try { |
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|
289 |
PrintStream p = new PrintStream(bos, true, "US-ASCII"); |
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|
290 |
t.printStackTrace(p); |
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|
291 |
s = bos.toString("US-ASCII"); |
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|
292 |
} catch (UnsupportedEncodingException ex) { |
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|
293 |
// can't happen |
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|
294 |
} |
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|
295 |
return s; |
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|
296 |
} |
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|
297 |
|
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|
298 |
/** |
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|
299 |
* Copies as much of src to dst as possible. |
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|
300 |
* Return number of bytes copied |
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parents:
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|
301 |
*/ |
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|
302 |
public static int copy(ByteBuffer src, ByteBuffer dst) { |
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|
303 |
int srcLen = src.remaining(); |
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|
304 |
int dstLen = dst.remaining(); |
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|
305 |
if (srcLen > dstLen) { |
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|
306 |
int diff = srcLen - dstLen; |
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|
307 |
int limit = src.limit(); |
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parents:
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|
308 |
src.limit(limit - diff); |
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parents:
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|
309 |
dst.put(src); |
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parents:
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changeset
|
310 |
src.limit(limit); |
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parents:
diff
changeset
|
311 |
} else { |
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parents:
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|
312 |
dst.put(src); |
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parents:
diff
changeset
|
313 |
} |
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parents:
diff
changeset
|
314 |
return srcLen - src.remaining(); |
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parents:
diff
changeset
|
315 |
} |
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parents:
diff
changeset
|
316 |
|
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parents:
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changeset
|
317 |
// copy up to amount from src to dst, but no more |
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|
318 |
public static int copyUpTo(ByteBuffer src, ByteBuffer dst, int amount) { |
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|
319 |
int toCopy = Math.min(src.remaining(), Math.min(dst.remaining(), amount)); |
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|
320 |
copy(src, dst, toCopy); |
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parents:
diff
changeset
|
321 |
return toCopy; |
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parents:
diff
changeset
|
322 |
} |
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parents:
diff
changeset
|
323 |
|
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parents:
diff
changeset
|
324 |
/** |
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parents:
diff
changeset
|
325 |
* Copy amount bytes from src to dst. at least amount must be |
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parents:
diff
changeset
|
326 |
* available in both dst and in src |
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parents:
diff
changeset
|
327 |
*/ |
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parents:
diff
changeset
|
328 |
public static void copy(ByteBuffer src, ByteBuffer dst, int amount) { |
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parents:
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changeset
|
329 |
int excess = src.remaining() - amount; |
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parents:
diff
changeset
|
330 |
assert excess >= 0; |
7133f144981a
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michaelm
parents:
diff
changeset
|
331 |
if (excess > 0) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
332 |
int srclimit = src.limit(); |
7133f144981a
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michaelm
parents:
diff
changeset
|
333 |
src.limit(srclimit - excess); |
7133f144981a
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michaelm
parents:
diff
changeset
|
334 |
dst.put(src); |
7133f144981a
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michaelm
parents:
diff
changeset
|
335 |
src.limit(srclimit); |
7133f144981a
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michaelm
parents:
diff
changeset
|
336 |
} else { |
7133f144981a
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michaelm
parents:
diff
changeset
|
337 |
dst.put(src); |
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michaelm
parents:
diff
changeset
|
338 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
339 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
340 |
|
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parents:
diff
changeset
|
341 |
public static ByteBuffer copy(ByteBuffer src) { |
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parents:
diff
changeset
|
342 |
ByteBuffer dst = ByteBuffer.allocate(src.remaining()); |
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parents:
diff
changeset
|
343 |
dst.put(src); |
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parents:
diff
changeset
|
344 |
dst.flip(); |
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parents:
diff
changeset
|
345 |
return dst; |
7133f144981a
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michaelm
parents:
diff
changeset
|
346 |
} |
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michaelm
parents:
diff
changeset
|
347 |
|
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parents:
diff
changeset
|
348 |
public static String dump(Object... objects) { |
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parents:
diff
changeset
|
349 |
return Arrays.toString(objects); |
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michaelm
parents:
diff
changeset
|
350 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
351 |
|
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michaelm
parents:
diff
changeset
|
352 |
public static String stringOf(Collection<?> source) { |
7133f144981a
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parents:
diff
changeset
|
353 |
// We don't know anything about toString implementation of this |
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parents:
diff
changeset
|
354 |
// collection, so let's create an array |
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parents:
diff
changeset
|
355 |
return Arrays.toString(source.toArray()); |
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michaelm
parents:
diff
changeset
|
356 |
} |
7133f144981a
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parents:
diff
changeset
|
357 |
|
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parents:
diff
changeset
|
358 |
public static int remaining(ByteBuffer[] bufs) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
359 |
int remain = 0; |
7133f144981a
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michaelm
parents:
diff
changeset
|
360 |
for (ByteBuffer buf : bufs) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
361 |
remain += buf.remaining(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
362 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
363 |
return remain; |
7133f144981a
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michaelm
parents:
diff
changeset
|
364 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
365 |
|
7133f144981a
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parents:
diff
changeset
|
366 |
public static int remaining(List<ByteBuffer> bufs) { |
7133f144981a
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parents:
diff
changeset
|
367 |
int remain = 0; |
7133f144981a
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michaelm
parents:
diff
changeset
|
368 |
for (ByteBuffer buf : bufs) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
369 |
remain += buf.remaining(); |
7133f144981a
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michaelm
parents:
diff
changeset
|
370 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
371 |
return remain; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
372 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
373 |
|
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parents:
diff
changeset
|
374 |
public static int remaining(ByteBufferReference[] refs) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
375 |
int remain = 0; |
7133f144981a
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michaelm
parents:
diff
changeset
|
376 |
for (ByteBufferReference ref : refs) { |
7133f144981a
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parents:
diff
changeset
|
377 |
remain += ref.get().remaining(); |
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michaelm
parents:
diff
changeset
|
378 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
379 |
return remain; |
7133f144981a
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michaelm
parents:
diff
changeset
|
380 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
381 |
|
7133f144981a
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michaelm
parents:
diff
changeset
|
382 |
// assumes buffer was written into starting at position zero |
7133f144981a
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michaelm
parents:
diff
changeset
|
383 |
static void unflip(ByteBuffer buf) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
384 |
buf.position(buf.limit()); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
385 |
buf.limit(buf.capacity()); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
386 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
387 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
388 |
public static void close(Closeable... closeables) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
389 |
for (Closeable c : closeables) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
390 |
try { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
391 |
c.close(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
392 |
} catch (IOException ignored) { } |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
393 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
394 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
395 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
396 |
public static void close(Throwable t, Closeable... closeables) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
397 |
for (Closeable c : closeables) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
398 |
try { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
399 |
ExceptionallyCloseable.close(t, c); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
400 |
} catch (IOException ignored) { } |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
401 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
402 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
403 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
404 |
/** |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
405 |
* Returns an array with the same buffers, but starting at position zero |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
406 |
* in the array. |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
407 |
*/ |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
408 |
public static ByteBuffer[] reduce(ByteBuffer[] bufs, int start, int number) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
409 |
if (start == 0 && number == bufs.length) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
410 |
return bufs; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
411 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
412 |
ByteBuffer[] nbufs = new ByteBuffer[number]; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
413 |
int j = 0; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
414 |
for (int i=start; i<start+number; i++) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
415 |
nbufs[j++] = bufs[i]; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
416 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
417 |
return nbufs; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
418 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
419 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
420 |
static String asString(ByteBuffer buf) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
421 |
byte[] b = new byte[buf.remaining()]; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
422 |
buf.get(b); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
423 |
return new String(b, StandardCharsets.US_ASCII); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
424 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
425 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
426 |
/** |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
427 |
* Returns a single threaded executor which uses one invocation |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
428 |
* of the parent executor to execute tasks (in sequence). |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
429 |
* |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
430 |
* Use a null valued Runnable to terminate. |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
431 |
*/ |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
432 |
// TODO: this is a blocking way of doing this; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
433 |
public static Executor singleThreadExecutor(Executor parent) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
434 |
BlockingQueue<Optional<Runnable>> queue = new LinkedBlockingQueue<>(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
435 |
parent.execute(() -> { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
436 |
while (true) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
437 |
try { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
438 |
Optional<Runnable> o = queue.take(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
439 |
if (!o.isPresent()) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
440 |
return; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
441 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
442 |
o.get().run(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
443 |
} catch (InterruptedException ex) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
444 |
return; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
445 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
446 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
447 |
}); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
448 |
return new Executor() { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
449 |
@Override |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
450 |
public void execute(Runnable command) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
451 |
queue.offer(Optional.ofNullable(command)); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
452 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
453 |
}; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
454 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
455 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
456 |
private static void executeInline(Runnable r) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
457 |
r.run(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
458 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
459 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
460 |
static Executor callingThreadExecutor() { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
461 |
return Utils::executeInline; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
462 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
463 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
464 |
// Put all these static 'empty' singletons here |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
465 |
@SuppressWarnings("rawtypes") |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
466 |
public static final CompletableFuture[] EMPTY_CFARRAY = new CompletableFuture[0]; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
467 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
468 |
public static final ByteBuffer EMPTY_BYTEBUFFER = ByteBuffer.allocate(0); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
469 |
public static final ByteBuffer[] EMPTY_BB_ARRAY = new ByteBuffer[0]; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
470 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
471 |
public static ByteBuffer slice(ByteBuffer buffer, int amount) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
472 |
ByteBuffer newb = buffer.slice(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
473 |
newb.limit(amount); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
474 |
buffer.position(buffer.position() + amount); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
475 |
return newb; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
476 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
477 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
478 |
} |