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JDK 17 java.base.jmod - Base Module
JDK 17 java.base.jmod is the JMOD file for JDK 17 Base module.
JDK 17 Base module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\java.base.jmod.
JDK 17 Base module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 Base module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\java.base.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ java/net/MulticastSocket.java
/* * Copyright (c) 1995, 2021, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package java.net; import java.io.IOException; import java.nio.channels.DatagramChannel; import java.nio.channels.MulticastChannel; /** * A {@code MulticastSocket} is a datagram socket that is * convenient for sending and receiving IP multicast datagrams. * The {@code MulticastSocket} constructors create a socket * with appropriate socket options enabled that make * it suitable for receiving multicast datagrams. * The {@code MulticastSocket} class additionally defines * convenient setter and getter methods for socket options * that are commonly used by multicasting applications. * <P> * Joining one or more multicast groups makes it possible to * receive multicast datagrams sent to these groups. * <P> * An IPv4 multicast group is specified by a class D IP address * and by a standard UDP port number. Class D IP addresses * are in the range {@code 224.0.0.0} to {@code 239.255.255.255}, * inclusive. The address 224.0.0.0 is reserved and should not be used. * <P> * One would join a multicast group by first creating a MulticastSocket * with the desired port, then invoking the * <CODE>joinGroup</CODE> method, specifying the group address and * the network interface through which multicast datagrams will be * received: * <PRE>{@code * // join a Multicast group and send the group salutations * ... * String msg = "Hello"; * InetAddress mcastaddr = InetAddress.getByName("228.5.6.7"); * InetSocketAddress group = new InetSocketAddress(mcastaddr, 6789); * NetworkInterface netIf = NetworkInterface.getByName("bge0"); * MulticastSocket s = new MulticastSocket(6789); * * s.joinGroup(new InetSocketAddress(mcastaddr, 0), netIf); * byte[] msgBytes = msg.getBytes(StandardCharsets.UTF_8); * DatagramPacket hi = new DatagramPacket(msgBytes, msgBytes.length, group); * s.send(hi); * // get their responses! * byte[] buf = new byte[1000]; * DatagramPacket recv = new DatagramPacket(buf, buf.length); * s.receive(recv); * ... * // OK, I'm done talking - leave the group... * s.leaveGroup(group, netIf); * }</PRE> * * When one sends a message to a multicast group, <B>all</B> subscribing * recipients to that host and port receive the message (within the * time-to-live range of the packet, see below). The socket needn't * be a member of the multicast group to send messages to it. * <P> * When a socket subscribes to a multicast group/port, it receives * datagrams sent by other hosts to the group/port, as do all other * members of the group and port. A socket relinquishes membership * in a group by the leaveGroup(SocketAddress mcastaddr, NetworkInterface netIf) * method. * <B>Multiple MulticastSockets</B> may subscribe to a multicast group * and port concurrently, and they will all receive group datagrams. * * <p> The {@code DatagramSocket} and {@code MulticastSocket} * classes define convenience methods to set and get several * socket options. Like {@code DatagramSocket} this class also * supports the {@link #setOption(SocketOption, Object) setOption} * and {@link #getOption(SocketOption) getOption} methods to set * and query socket options. * <a id="MulticastOptions"></a>The set of supported socket options * is defined in <a href="DatagramSocket.html#SocketOptions">{@code DatagramSocket}</a>. * Additional (implementation specific) options may also be supported. * * @apiNote {@link DatagramSocket} may be used directly for * sending and receiving multicast datagrams. * {@link DatagramChannel} implements the {@link MulticastChannel} interface * and provides an alternative API for sending and receiving multicast datagrams. * The {@link MulticastChannel} API supports both {@linkplain * MulticastChannel#join(InetAddress, NetworkInterface) any-source} and * {@linkplain MulticastChannel#join(InetAddress, NetworkInterface, InetAddress) * source-specific} multicast. Consider using {@link DatagramChannel} for * multicasting. * * @author Pavani Diwanji * @since 1.1 */ public class MulticastSocket extends DatagramSocket { @Override final MulticastSocket delegate() { return (MulticastSocket) super.delegate(); } /** * Create a MulticastSocket that delegates to the given delegate if not null. * @param delegate the delegate, can be null. */ MulticastSocket(MulticastSocket delegate) { super(delegate); } /** * Constructs a multicast socket and binds it to any available port * on the local host machine. The socket will be bound to the * {@link InetAddress#isAnyLocalAddress wildcard} address. * * <p> * If there is a security manager, its {@code checkListen} method is first * called with 0 as its argument to ensure the operation is allowed. This * could result in a SecurityException. * <p> * When the socket is created the * {@link DatagramSocket#setReuseAddress(boolean)} method is called to * enable the SO_REUSEADDR socket option. * * @throws IOException if an I/O exception occurs while creating the * MulticastSocket * @throws SecurityException if a security manager exists and its * {@code checkListen} method doesn't allow the operation. * @see SecurityManager#checkListen * @see java.net.DatagramSocket#setReuseAddress(boolean) * @see java.net.DatagramSocketImpl#setOption(SocketOption, Object) */ public MulticastSocket() throws IOException { this(new InetSocketAddress(0)); } /** * Constructs a multicast socket and binds it to the specified port * on the local host machine. The socket will be bound to the * {@link InetAddress#isAnyLocalAddress wildcard} address. * * <p>If there is a security manager, * its {@code checkListen} method is first called * with the {@code port} argument * as its argument to ensure the operation is allowed. * This could result in a SecurityException. * <p> * When the socket is created the * {@link DatagramSocket#setReuseAddress(boolean)} method is * called to enable the SO_REUSEADDR socket option. * * @param port port to use * @throws IOException if an I/O exception occurs * while creating the MulticastSocket * @throws SecurityException if a security manager exists and its * {@code checkListen} method doesn't allow the operation. * @throws IllegalArgumentException if port is <a href="DatagramSocket.html#PortRange"> * out of range.</a> * * @see SecurityManager#checkListen * @see java.net.DatagramSocket#setReuseAddress(boolean) */ public MulticastSocket(int port) throws IOException { this(new InetSocketAddress(port)); } /** * Creates a multicast socket, bound to the specified local * socket address. * <p> * If the address is {@code null} an unbound socket will be created. * * <p>If there is a security manager, * its {@code checkListen} method is first called * with the SocketAddress port as its argument to ensure the operation is allowed. * This could result in a SecurityException. * <p> * When the socket is created the * {@link DatagramSocket#setReuseAddress(boolean)} method is * called to enable the SO_REUSEADDR socket option. * * @param bindaddr Socket address to bind to, or {@code null} for * an unbound socket. * @throws IOException if an I/O exception occurs * while creating the MulticastSocket * @throws SecurityException if a security manager exists and its * {@code checkListen} method doesn't allow the operation. * @see SecurityManager#checkListen * @see java.net.DatagramSocket#setReuseAddress(boolean) * * @since 1.4 */ public MulticastSocket(SocketAddress bindaddr) throws IOException { this(createDelegate(bindaddr, MulticastSocket.class)); } /** * Set the default time-to-live for multicast packets sent out * on this {@code MulticastSocket} in order to control the * scope of the multicasts. * * <p>The ttl is an <b>unsigned</b> 8-bit quantity, and so <B>must</B> be * in the range {@code 0 <= ttl <= 0xFF }. * * @param ttl the time-to-live * @throws IOException if an I/O exception occurs * while setting the default time-to-live value * @deprecated use the {@link #setTimeToLive(int)} method instead, which uses * <b>int</b> instead of <b>byte</b> as the type for ttl. * @see #getTTL() */ @Deprecated public void setTTL(byte ttl) throws IOException { delegate().setTTL(ttl); } /** * Set the default time-to-live for multicast packets sent out * on this {@code MulticastSocket} in order to control the * scope of the multicasts. * * <P> The ttl <B>must</B> be in the range {@code 0 <= ttl <= * 255} or an {@code IllegalArgumentException} will be thrown. * Multicast packets sent with a TTL of {@code 0} are not transmitted * on the network but may be delivered locally. * * @apiNote * This method is equivalent to calling {@link #setOption(SocketOption, Object) * setOption(StandardSocketOptions.IP_MULTICAST_TTL, ttl)}. * * @param ttl * the time-to-live * * @throws IOException * if an I/O exception occurs while setting the * default time-to-live value * * @see #getTimeToLive() * @see StandardSocketOptions#IP_MULTICAST_TTL * @since 1.2 */ public void setTimeToLive(int ttl) throws IOException { delegate().setTimeToLive(ttl); } /** * Get the default time-to-live for multicast packets sent out on * the socket. * * @throws IOException if an I/O exception occurs * while getting the default time-to-live value * @return the default time-to-live value * @deprecated use the {@link #getTimeToLive()} method instead, * which returns an <b>int</b> instead of a <b>byte</b>. * @see #setTTL(byte) */ @Deprecated public byte getTTL() throws IOException { return delegate().getTTL(); } /** * Get the default time-to-live for multicast packets sent out on * the socket. * * @apiNote * This method is equivalent to calling {@link #getOption(SocketOption) * getOption(StandardSocketOptions.IP_MULTICAST_TTL)}. * * @throws IOException if an I/O exception occurs while * getting the default time-to-live value * @return the default time-to-live value * @see #setTimeToLive(int) * @see StandardSocketOptions#IP_MULTICAST_TTL * @since 1.2 */ public int getTimeToLive() throws IOException { return delegate().getTimeToLive(); } /** * Joins a multicast group. Its behavior may be affected by * {@code setInterface} or {@code setNetworkInterface}. * * <p>If there is a security manager, this method first * calls its {@code checkMulticast} method with the * {@code mcastaddr} argument as its argument. * * @apiNote * Calling this method is equivalent to calling * {@link #joinGroup(SocketAddress, NetworkInterface) * joinGroup(new InetSocketAddress(mcastaddr, 0), null)}. * * @param mcastaddr is the multicast address to join * @throws IOException if there is an error joining, * or when the address is not a multicast address, * or the platform does not support multicasting * @throws SecurityException if a security manager exists and its * {@code checkMulticast} method doesn't allow the join. * @deprecated This method does not accept the network interface on * which to join the multicast group. Use * {@link #joinGroup(SocketAddress, NetworkInterface)} instead. * @see SecurityManager#checkMulticast(InetAddress) */ @Deprecated(since="14") public void joinGroup(InetAddress mcastaddr) throws IOException { delegate().joinGroup(mcastaddr); } /** * Leave a multicast group. Its behavior may be affected by * {@code setInterface} or {@code setNetworkInterface}. * * <p>If there is a security manager, this method first * calls its {@code checkMulticast} method with the * {@code mcastaddr} argument as its argument. * * @apiNote * Calling this method is equivalent to calling * {@link #leaveGroup(SocketAddress, NetworkInterface) * leaveGroup(new InetSocketAddress(mcastaddr, 0), null)}. * * @param mcastaddr is the multicast address to leave * @throws IOException if there is an error leaving * or when the address is not a multicast address. * @throws SecurityException if a security manager exists and its * {@code checkMulticast} method doesn't allow the operation. * @deprecated This method does not accept the network interface on which * to leave the multicast group. Use * {@link #leaveGroup(SocketAddress, NetworkInterface)} instead. * @see SecurityManager#checkMulticast(InetAddress) */ @Deprecated(since="14") public void leaveGroup(InetAddress mcastaddr) throws IOException { delegate().leaveGroup(mcastaddr); } /** * {@inheritDoc} * @throws IOException {@inheritDoc} * @throws SecurityException {@inheritDoc} * @throws IllegalArgumentException {@inheritDoc} * @see SecurityManager#checkMulticast(InetAddress) * @see DatagramChannel#join(InetAddress, NetworkInterface) * @see StandardSocketOptions#IP_MULTICAST_IF * @see #setNetworkInterface(NetworkInterface) * @see #setInterface(InetAddress) * @since 1.4 */ @Override public void joinGroup(SocketAddress mcastaddr, NetworkInterface netIf) throws IOException { super.joinGroup(mcastaddr, netIf); } /** * {@inheritDoc} * @apiNote {@inheritDoc} * @throws IOException {@inheritDoc} * @throws SecurityException {@inheritDoc} * @throws IllegalArgumentException {@inheritDoc} * @see SecurityManager#checkMulticast(InetAddress) * @see #joinGroup(SocketAddress, NetworkInterface) * @since 1.4 */ @Override public void leaveGroup(SocketAddress mcastaddr, NetworkInterface netIf) throws IOException { super.leaveGroup(mcastaddr, netIf); } /** * Set the multicast network interface used by methods * whose behavior would be affected by the value of the * network interface. Useful for multihomed hosts. * * @param inf the InetAddress * @throws SocketException if there is an error in * the underlying protocol, such as a TCP error. * @deprecated The InetAddress may not uniquely identify * the network interface. Use * {@link #setNetworkInterface(NetworkInterface)} instead. * @see #getInterface() */ @Deprecated(since="14") public void setInterface(InetAddress inf) throws SocketException { delegate().setInterface(inf); } /** * Retrieve the address of the network interface used for * multicast packets. * * @return An {@code InetAddress} representing the address * of the network interface used for multicast packets, * or if no interface has been set, an {@code InetAddress} * representing any local address. * @throws SocketException if there is an error in the * underlying protocol, such as a TCP error. * @deprecated The network interface may not be uniquely identified by * the InetAddress returned. * Use {@link #getNetworkInterface()} instead. * @see #setInterface(java.net.InetAddress) */ @Deprecated(since="14") public InetAddress getInterface() throws SocketException { return delegate().getInterface(); } /** * Specify the network interface for outgoing multicast datagrams * sent on this socket. * * @apiNote * This method is equivalent to calling {@link #setOption(SocketOption, Object) * setOption(StandardSocketOptions.IP_MULTICAST_IF, netIf)}. * * @param netIf the interface * @throws SocketException if there is an error in * the underlying protocol, such as a TCP error. * @see #getNetworkInterface() * @see StandardSocketOptions#IP_MULTICAST_IF * @since 1.4 */ public void setNetworkInterface(NetworkInterface netIf) throws SocketException { delegate().setNetworkInterface(netIf); } /** * Get the multicast network interface set for outgoing multicast * datagrams sent from this socket. * * @apiNote * When an interface is set, this method is equivalent * to calling {@link #getOption(SocketOption) * getOption(StandardSocketOptions.IP_MULTICAST_IF)}. * * @throws SocketException if there is an error in * the underlying protocol, such as a TCP error. * @return The multicast {@code NetworkInterface} currently set. A placeholder * NetworkInterface is returned when there is no interface set; it has * a single InetAddress to represent any local address. * @see #setNetworkInterface(NetworkInterface) * @see StandardSocketOptions#IP_MULTICAST_IF * @since 1.4 */ public NetworkInterface getNetworkInterface() throws SocketException { return delegate().getNetworkInterface(); } /** * Disable/Enable local loopback of multicast datagrams. * The option is used by the platform's networking code as a hint * for setting whether multicast data will be looped back to * the local socket. * * <p>Because this option is a hint, applications that want to * verify what loopback mode is set to should call * {@link #getLoopbackMode()} * @param disable {@code true} to disable the LoopbackMode * @throws SocketException if an error occurs while setting the value * @since 1.4 * @deprecated Use {@link #setOption(SocketOption, Object)} with * {@link java.net.StandardSocketOptions#IP_MULTICAST_LOOP} * instead. The loopback mode is enabled by default, * {@code MulticastSocket.setOption(StandardSocketOptions.IP_MULTICAST_LOOP, false)} * disables it. * @see #getLoopbackMode */ @Deprecated(since="14") public void setLoopbackMode(boolean disable) throws SocketException { delegate().setLoopbackMode(disable); } /** * Get the setting for local loopback of multicast datagrams. * * @throws SocketException if an error occurs while getting the value * @return true if the LoopbackMode has been disabled * @since 1.4 * @deprecated Use {@link #getOption(SocketOption)} with * {@link java.net.StandardSocketOptions#IP_MULTICAST_LOOP} * instead. * @see #setLoopbackMode */ @Deprecated(since="14") public boolean getLoopbackMode() throws SocketException { return delegate().getLoopbackMode(); } /** * Sends a datagram packet to the destination, with a TTL (time-to-live) * other than the default for the socket. This method * need only be used in instances where a particular TTL is desired; * otherwise it is preferable to set a TTL once on the socket, and * use that default TTL for all packets. This method does <B>not * </B> alter the default TTL for the socket. Its behavior may be * affected by {@code setInterface}. * * <p>If there is a security manager, this method first performs some * security checks. First, if {@code p.getAddress().isMulticastAddress()} * is true, this method calls the * security manager's {@code checkMulticast} method * with {@code p.getAddress()} and {@code ttl} as its arguments. * If the evaluation of that expression is false, * this method instead calls the security manager's * {@code checkConnect} method with arguments * {@code p.getAddress().getHostAddress()} and * {@code p.getPort()}. Each call to a security manager method * could result in a SecurityException if the operation is not allowed. * * @param p is the packet to be sent. The packet should contain * the destination multicast ip address and the data to be sent. * One does not need to be the member of the group to send * packets to a destination multicast address. * @param ttl optional time to live for multicast packet. * default ttl is 1. * * @throws IOException is raised if an error occurs i.e * error while setting ttl. * @throws SecurityException if a security manager exists and its * {@code checkMulticast} or {@code checkConnect} * method doesn't allow the send. * @throws PortUnreachableException may be thrown if the socket is connected * to a currently unreachable destination. Note, there is no * guarantee that the exception will be thrown. * @throws IllegalArgumentException if the socket is connected, * and connected address and packet address differ, or * if the socket is not connected and the packet address * is not set or if its port is out of range. * * * @deprecated Use the following code or its equivalent instead: * <pre>{@code ...... * int ttl = mcastSocket.getOption(StandardSocketOptions.IP_MULTICAST_TTL); * mcastSocket.setOption(StandardSocketOptions.IP_MULTICAST_TTL, newttl); * mcastSocket.send(p); * mcastSocket.setOption(StandardSocketOptions.IP_MULTICAST_TTL, ttl); * ......}</pre> * * @see DatagramSocket#send * @see DatagramSocket#receive * @see SecurityManager#checkMulticast(java.net.InetAddress, byte) * @see SecurityManager#checkConnect */ @Deprecated public void send(DatagramPacket p, byte ttl) throws IOException { delegate().send(p, ttl); } }
⏎ java/net/MulticastSocket.java
Or download all of them as a single archive file:
File name: java.base-17.0.5-src.zip File size: 8883851 bytes Release date: 2022-09-13 Download
2023-09-26, 94481👍, 1💬
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