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src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java

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   1 /*
   2  * Copyright (c) 1996, 2019, 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


  51     /* timeout value for receive() */
  52     int timeout = 0;
  53     boolean connected = false;
  54     private int trafficClass = 0;
  55     protected InetAddress connectedAddress = null;
  56     private int connectedPort = -1;
  57     private final boolean isMulticast;
  58 
  59     private static final String os =
  60             GetPropertyAction.privilegedGetProperty("os.name");
  61 
  62     /**
  63      * flag set if the native connect() call not to be used
  64      */
  65     private static final boolean connectDisabled = os.contains("OS X");
  66 
  67     /**
  68      * Load net library into runtime.
  69      */
  70     static {
  71         jdk.internal.loader.BootLoader.loadLibrary("net");
  72     }
  73 
  74     private static volatile boolean checkedReusePort;
  75     private static volatile boolean isReusePortAvailable;
  76 
  77     /**
  78      * Tells whether SO_REUSEPORT is supported.
  79      */
  80     static boolean isReusePortAvailable() {
  81         if (!checkedReusePort) {
  82             isReusePortAvailable = isReusePortAvailable0();
  83             checkedReusePort = true;
  84         }
  85         return isReusePortAvailable;
  86     }
  87 
  88     AbstractPlainDatagramSocketImpl(boolean isMulticast) {
  89         this.isMulticast = isMulticast;
  90     }
  91 


   1 /*
   2  * Copyright (c) 1996, 2020, 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


  51     /* timeout value for receive() */
  52     int timeout = 0;
  53     boolean connected = false;
  54     private int trafficClass = 0;
  55     protected InetAddress connectedAddress = null;
  56     private int connectedPort = -1;
  57     private final boolean isMulticast;
  58 
  59     private static final String os =
  60             GetPropertyAction.privilegedGetProperty("os.name");
  61 
  62     /**
  63      * flag set if the native connect() call not to be used
  64      */
  65     private static final boolean connectDisabled = os.contains("OS X");
  66 
  67     /**
  68      * Load net library into runtime.
  69      */
  70     static {
  71         sun.security.action.LoadLibraryAction.privilegedLoadLibrary("net");
  72     }
  73 
  74     private static volatile boolean checkedReusePort;
  75     private static volatile boolean isReusePortAvailable;
  76 
  77     /**
  78      * Tells whether SO_REUSEPORT is supported.
  79      */
  80     static boolean isReusePortAvailable() {
  81         if (!checkedReusePort) {
  82             isReusePortAvailable = isReusePortAvailable0();
  83             checkedReusePort = true;
  84         }
  85         return isReusePortAvailable;
  86     }
  87 
  88     AbstractPlainDatagramSocketImpl(boolean isMulticast) {
  89         this.isMulticast = isMulticast;
  90     }
  91 


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