Fixed test failures on JDK 17. Updated pom.xml.

pom.xml

@@ -36,19 +36,19 @@
 
     <dependencies>
         <dependency>
-            <groupId>asm</groupId>
+            <groupId>org.ow2.asm</groupId>
             <artifactId>asm</artifactId>
-            <version>3.3</version>
+            <version>9.2</version>
         </dependency>
         <dependency>
             <groupId>commons-logging</groupId>
             <artifactId>commons-logging</artifactId>
-            <version>1.0.3</version>
+            <version>1.2</version>
         </dependency>
         <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
-            <version>1.2.15</version>
+            <version>1.2.17</version>
             <exclusions>
                 <exclusion>
                     <groupId>javax.jms</groupId>
@@ -93,7 +93,7 @@
                             <target name="compile-native">
                                 <property name="build.dir"      value="target"/>
                                 <property name="src.dir"        value="src"/>
-                                <property name="gcc.extra.args" value=""/>
+                                <property name="gcc.args"       value="-O3 -fno-omit-frame-pointer -momit-leaf-frame-pointer"/>
 
                                 <echo message="Compiling native library..."/>
 
@@ -104,8 +104,9 @@
                                 </pathconvert>
 
                                 <exec os="Linux" executable="gcc">
-                                    <arg line="-g -O3 -fPIC -D_GNU_SOURCE ${gcc.extra.args}
-                                               -o ${build.dir}/native/libonenio.so -shared -Wl,-soname,libonenio.so
+                                    <arg line="-D_GNU_SOURCE -fPIC -shared -Wl,-soname,libonenio.so ${gcc.args}
+                                               -o ${build.dir}/native/libonenio.so
+                                               -I ${java.home}/include -I ${java.home}/include/linux
                                                -I ${java.home}/../include -I ${java.home}/../include/linux
                                                ${src.native} -ldl -lrt"/>
                                 </exec>

src/one/nio/net/SelectableJavaSocket.java

@@ -17,47 +17,63 @@
 package one.nio.net;
 
 import one.nio.util.JavaInternals;
-import sun.nio.ch.Net;
-import sun.nio.ch.SelChImpl;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
+import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.net.SocketTimeoutException;
 import java.nio.channels.SelectableChannel;
 
+import static one.nio.util.JavaInternals.unsafe;
+
 /**
  * @author ivan.grigoryev
  */
 public abstract class SelectableJavaSocket extends Socket {
-    private static final MethodHandle poll = getPollMethodHandle();
+    private static final Log log = LogFactory.getLog(SelectableJavaSocket.class);
+
+    private static final MethodHandle poll = getMethodHandle("sun.nio.ch.Net", "poll", FileDescriptor.class, int.class, long.class);
+    private static final MethodHandle getFD = getMethodHandle("sun.nio.ch.SelChImpl", "getFD");
 
-    private static MethodHandle getPollMethodHandle() {
+    static final int POLL_READ = getFieldValue("sun.nio.ch.Net", "POLLIN");
+    static final int POLL_WRITE = getFieldValue("sun.nio.ch.Net", "POLLOUT");
+
+    private static MethodHandle getMethodHandle(String cls, String name, Class<?>... params) {
         try {
-            Method m = JavaInternals.getMethod(Net.class, "poll", FileDescriptor.class, int.class, long.class);
-            if (m != null) {
-                return MethodHandles.publicLookup().unreflect(m);
-            }
+            Method m = Class.forName(cls).getDeclaredMethod(name, params);
+            JavaInternals.setAccessible(m);
+            return MethodHandles.publicLookup().unreflect(m);
         } catch (Throwable e) {
-            // ignore
+            log.debug("Failed to access sun.nio.ch API", e);
         }
         return null;
     }
 
-    static final int POLL_READ = Net.POLLIN;
-    static final int POLL_WRITE = Net.POLLOUT;
+    private static int getFieldValue(String cls, String name) {
+        try {
+            Field f = Class.forName(cls).getDeclaredField(name);
+            return unsafe.getShort(unsafe.staticFieldBase(f), unsafe.staticFieldOffset(f));
+        } catch (Throwable e) {
+            log.debug("Failed to access sun.nio.ch API", e);
+            return 0;
+        }
+    }
 
     void checkTimeout(int events, long timeout) throws IOException {
-        if (timeout <= 0 || poll == null) {
+        if (timeout <= 0 || poll == null || getFD == null) {
             return;
         }
 
         try {
             long endTime = System.currentTimeMillis() + timeout;
             do {
-                int result = (int) poll.invokeExact(((SelChImpl) getSelectableChannel()).getFD(), events, timeout);
+                FileDescriptor fd = (FileDescriptor) getFD.invoke(getSelectableChannel());
+                int result = (int) poll.invokeExact(fd, events, timeout);
                 if (result > 0) {
                     return;
                 }

test/one/nio/net/SocketTest.java

@@ -29,7 +29,7 @@ private static void testIPv4() throws IOException {
         Socket s = Socket.create();
         s.setTimeout(3000);
 
-        s.connect("www.ru", 80);
+        s.connect("google.com", 80);
         System.out.println("connected from " + s.getLocalAddress() + " to " + s.getRemoteAddress());
         s.close();
     }
@@ -38,7 +38,7 @@ private static void testIPv6() throws IOException {
         Socket s = Socket.create();
         s.setTimeout(3000);
 
-        s.connect("::1", 22);
+        s.connect("2a00:1450:4010:c07::71", 80);
         System.out.println("connected from " + s.getLocalAddress() + " to " + s.getRemoteAddress());
 
         byte[] b = new byte[1000];