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 }