1 /*
   2  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.net.http;
  27 
  28 import java.net.URI;
  29 import java.net.URISyntaxException;
  30 import java.nio.Buffer;
  31 import java.nio.ByteBuffer;
  32 import java.util.Arrays;
  33 
  34 final class WSUtils {
  35 
  36     private WSUtils() { }
  37 
  38     static final System.Logger logger = System.getLogger("java.net.http.WebSocket");
  39     static final ByteBuffer EMPTY_BYTE_BUFFER = ByteBuffer.allocate(0);
  40 
  41     //
  42     // Helps to trim long names (packages, nested/inner types) in logs/toString
  43     //
  44     static String toStringSimple(Object o) {
  45         return o.getClass().getSimpleName() + "@" +
  46                 Integer.toHexString(System.identityHashCode(o));
  47     }
  48 
  49     //
  50     // 1. It adds a number of remaining bytes;
  51     // 2. Standard Buffer-type toString for CharBuffer (since it adheres to the
  52     // contract of java.lang.CharSequence.toString() which is both not too
  53     // useful and not too private)
  54     //
  55     static String toString(Buffer b) {
  56         return toStringSimple(b)
  57                 + "[pos=" + b.position()
  58                 + " lim=" + b.limit()
  59                 + " cap=" + b.capacity()
  60                 + " rem=" + b.remaining() + "]";
  61     }
  62 
  63     static String toString(CharSequence s) {
  64         return s == null
  65                 ? "null"
  66                 : toStringSimple(s) + "[len=" + s.length() + "]";
  67     }
  68 
  69     static String dump(Object... objects) {
  70         return Arrays.toString(objects);
  71     }
  72 
  73     static String webSocketSpecViolation(String section, String detail) {
  74         return "RFC 6455 " + section + " " + detail;
  75     }
  76 }