Java Unix Domain Sockets (JUDS) 提供了 Java 的方法用来访问 Unix domain sockets 套接字。

示例代码：

package com.google.code.juds.test;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import com.google.code.juds.*;

public class TestUnixDomainSocket {

        public static void main(String[] args) throws IOException {
                if (args.length != 1) {
                        System.out
                                        .println("usage: java TestUnixDomainSocket socketfilename");
                        System.exit(1);
                }
                String socketFile = args[0];

                byte[] b = new byte[128];
                // Testcase 1.1: Test UnixDomainSocketClient with a stream socket
                UnixDomainSocketClient socket = new UnixDomainSocketClient(socketFile,
                                UnixDomainSocket.SOCK_STREAM);
                InputStream in = socket.getInputStream();
                OutputStream out = socket.getOutputStream();
                in.read(b);
                System.out.println("Text received: "" + new String(b) + """);
                String text = "[2] Hello! I'm the client!";
                out.write(text.getBytes());
                System.out.println("Text sent: " + """ + text + """);
                socket.close();

                // Testcase 1.2: Test UnixDomainSocketClient with a datagram socket
                socket = new UnixDomainSocketClient(socketFile,
                                UnixDomainSocket.SOCK_DGRAM);
                System.out.println("Provoke and catch an "
                                + "UnsupportedOperationException:");
                try {
                        in = socket.getInputStream();
                } catch (UnsupportedOperationException e) {
                        System.out.println("UnsupportedOperationException has been "
                                        + "thrown as expected.");
                }
                out = socket.getOutputStream();
                text = "[3] Hello! I'm the client!";
                out.write(text.getBytes());
                System.out.println("Text sent: "" + text + """);
                socket.close();

                // Testcase 2.1: Test UnixDomainSocketServer with a stream socket
                System.out.println("nTest #2: Test UnixDomainSocketServernTestcase "
                                + "2.1: Test UnixDomainSocketServer with a stream socket...");
                UnixDomainSocketServer ssocket = new UnixDomainSocketServer(socketFile,
                                UnixDomainSocket.SOCK_STREAM);
                in = ssocket.getInputStream();
                out = ssocket.getOutputStream();
                in.read(b);
                System.out.println("Text received: "" + new String(b) + """);
                text = "[5] Hello! I'm the server!";
                out.write(text.getBytes());
                System.out.println("Text sent: " + """ + text + """);
                ssocket.close();
                ssocket.unlink();

                // Testcase 2.2: Test UnixDomainSocketServer with a datagram socket
                System.out.println("Testcase 2.2: Test UnixDomainSocketServer with "
                                + "a datagram socket...");
                ssocket = new UnixDomainSocketServer(socketFile,
                                UnixDomainSocket.SOCK_DGRAM);
                System.out.println("Provoke and catch an "
                                + "UnsupportedOperationException:");
                in = ssocket.getInputStream();
                try {
                        out = ssocket.getOutputStream();
                } catch (UnsupportedOperationException e) {
                        System.out.println("UnsupportedOperationException has been "
                                        + "thrown as expected.");
                }
                in.read(b);
                System.out.println("Text received: "" + new String(b) + """);
                ssocket.close();
                ssocket.unlink();
        }
}

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