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Diffstat (limited to 'libjava/classpath/java/net/InetSocketAddress.java')
| -rw-r--r-- | libjava/classpath/java/net/InetSocketAddress.java | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/libjava/classpath/java/net/InetSocketAddress.java b/libjava/classpath/java/net/InetSocketAddress.java new file mode 100644 index 0000000..30d34e7 --- /dev/null +++ b/libjava/classpath/java/net/InetSocketAddress.java @@ -0,0 +1,221 @@ +/* InetSocketAddress.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.net; + + +/** + * InetSocketAddress instances represent socket addresses + * in the java.nio package. They encapsulate a InetAddress and + * a port number. + * + * @since 1.4 + */ +public class InetSocketAddress extends SocketAddress +{ + /** + * Compatible with JDK 1.4+ + */ + private static final long serialVersionUID = 5076001401234631237L; + + /** + * Name of host. + */ + private String hostname; + + /** + * Address of host. + */ + private InetAddress addr; + + /** + * Port of host. + */ + private int port; + + /** + * Constructs an InetSocketAddress instance. + * + * @param addr Address of the socket + * @param port Port if the socket + * + * @exception IllegalArgumentException If the port number is illegel + */ + public InetSocketAddress(InetAddress addr, int port) + throws IllegalArgumentException + { + if (port < 0 || port > 65535) + throw new IllegalArgumentException("Bad port number: " + port); + + if (addr == null) + addr = InetAddress.ANY_IF; + + this.addr = addr; + this.port = port; + this.hostname = addr.getHostName(); + } + + /** + * Constructs an InetSocketAddress instance. + * + * @param port Port if the socket + * + * @exception IllegalArgumentException If the port number is illegal + */ + public InetSocketAddress(int port) throws IllegalArgumentException + { + this((InetAddress) null, port); + } + + /** + * Constructs an InetSocketAddress instance. + * + * @param hostname The hostname for the socket address + * @param port The port for the socket address + * + * @exception IllegalArgumentException If the port number is illegal + */ + public InetSocketAddress(String hostname, int port) + throws IllegalArgumentException + { + if (hostname == null) + throw new IllegalArgumentException("Null host name value"); + + if (port < 0 || port > 65535) + throw new IllegalArgumentException("Bad port number: " + port); + + this.port = port; + this.hostname = hostname; + + try + { + this.addr = InetAddress.getByName(hostname); + } + catch (Exception e) // UnknownHostException, SecurityException + { + this.addr = null; + } + } + + /** + * Test if obj is a <code>InetSocketAddress</code> and + * has the same address and port + * + * @param obj The obj to compare this address with. + * + * @return True if obj is equal. + */ + public final boolean equals(Object obj) + { + // InetSocketAddress objects are equal when addr and port are equal. + // The hostname may differ. + if (obj instanceof InetSocketAddress) + { + InetSocketAddress sa = (InetSocketAddress) obj; + + if (addr == null && sa.addr != null) + return false; + else if (addr == null && sa.addr == null) + return hostname.equals(sa.hostname) && sa.port == port; + else + return addr.equals(sa.addr) && sa.port == port; + } + + return false; + } + + /** + * Returns the <code>InetAddress</code> or + * <code>null</code> if its unresolved + * + * @return The IP address of this address. + */ + public final InetAddress getAddress() + { + return addr; + } + + /** + * Returns <code>hostname</code> + * + * @return The hostname of this address. + */ + public final String getHostName() + { + return hostname; + } + + /** + * Returns the <code>port</code> + * + * @return The port of this address. + */ + public final int getPort() + { + return port; + } + + /** + * Returns the hashcode of the <code>InetSocketAddress</code> + * + * @return The hashcode for this address. + */ + public final int hashCode() + { + return port + addr.hashCode(); + } + + /** + * Checks wether the address has been resolved or not + * + * @return True if address is unresolved. + */ + public final boolean isUnresolved() + { + return addr == null; + } + + /** + * Returns the <code>InetSocketAddress</code> as string + * + * @return A string represenation of this address. + */ + public String toString() + { + return (addr == null ? hostname : addr.getHostName()) + ":" + port; + } +} |