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

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   1 /*
   2  * Copyright (c) 1995, 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


  77     /* indicates connection reset state */
  78     private volatile boolean connectionReset;
  79 
  80     /* indicates whether impl is bound  */
  81     boolean isBound;
  82 
  83     /* indicates whether impl is connected  */
  84     volatile boolean isConnected;
  85 
  86    /* whether this Socket is a stream (TCP) socket or not (UDP)
  87     */
  88     protected boolean stream;
  89 
  90     /* whether this is a server or not */
  91     final boolean isServer;
  92 
  93     /**
  94      * Load net library into runtime.
  95      */
  96     static {
  97         jdk.internal.loader.BootLoader.loadLibrary("net");
  98     }
  99 
 100     private static volatile boolean checkedReusePort;
 101     private static volatile boolean isReusePortAvailable;
 102 
 103     /**
 104      * Tells whether SO_REUSEPORT is supported.
 105      */
 106     static boolean isReusePortAvailable() {
 107         if (!checkedReusePort) {
 108             isReusePortAvailable = isReusePortAvailable0();
 109             checkedReusePort = true;
 110         }
 111         return isReusePortAvailable;
 112     }
 113 
 114     AbstractPlainSocketImpl(boolean isServer) {
 115         this.isServer = isServer;
 116     }
 117 


   1 /*
   2  * Copyright (c) 1995, 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


  77     /* indicates connection reset state */
  78     private volatile boolean connectionReset;
  79 
  80     /* indicates whether impl is bound  */
  81     boolean isBound;
  82 
  83     /* indicates whether impl is connected  */
  84     volatile boolean isConnected;
  85 
  86    /* whether this Socket is a stream (TCP) socket or not (UDP)
  87     */
  88     protected boolean stream;
  89 
  90     /* whether this is a server or not */
  91     final boolean isServer;
  92 
  93     /**
  94      * Load net library into runtime.
  95      */
  96     static {
  97         sun.security.action.LoadLibraryAction.privilegedLoadLibrary("net");
  98     }
  99 
 100     private static volatile boolean checkedReusePort;
 101     private static volatile boolean isReusePortAvailable;
 102 
 103     /**
 104      * Tells whether SO_REUSEPORT is supported.
 105      */
 106     static boolean isReusePortAvailable() {
 107         if (!checkedReusePort) {
 108             isReusePortAvailable = isReusePortAvailable0();
 109             checkedReusePort = true;
 110         }
 111         return isReusePortAvailable;
 112     }
 113 
 114     AbstractPlainSocketImpl(boolean isServer) {
 115         this.isServer = isServer;
 116     }
 117 


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