diff --git a/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpRequester.java b/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpRequester.java
index 2ca4e94ad..57e110b1e 100644
--- a/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpRequester.java
+++ b/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpRequester.java
@@ -84,6 +84,7 @@
 import org.apache.hc.core5.pool.PoolEntry;
 import org.apache.hc.core5.pool.PoolStats;
 import org.apache.hc.core5.util.Args;
+import org.apache.hc.core5.util.ReflectionUtils;
 import org.apache.hc.core5.util.TimeValue;
 import org.apache.hc.core5.util.Timeout;
 
@@ -240,6 +241,7 @@ public <T> T execute(
         }
     }
 
+    @SuppressWarnings("Since15")
     private HttpClientConnection createConnection(final Socket sock, final HttpHost targetHost) throws IOException {
         sock.setSoTimeout(socketConfig.getSoTimeout().toMillisecondsIntBound());
         sock.setReuseAddress(socketConfig.isSoReuseAddress());
@@ -251,14 +253,16 @@ private HttpClientConnection createConnection(final Socket sock, final HttpHost
         if (socketConfig.getSndBufSize() > 0) {
             sock.setSendBufferSize(socketConfig.getSndBufSize());
         }
-        if (this.socketConfig.getTcpKeepIdle() > 0) {
-            Sockets.setOption(sock, ExtendedSocketOptions.TCP_KEEPIDLE, this.socketConfig.getTcpKeepIdle());
-        }
-        if (this.socketConfig.getTcpKeepInterval() > 0) {
-            Sockets.setOption(sock, ExtendedSocketOptions.TCP_KEEPINTERVAL, this.socketConfig.getTcpKeepInterval());
-        }
-        if (this.socketConfig.getTcpKeepCount() > 0) {
-            Sockets.setOption(sock, ExtendedSocketOptions.TCP_KEEPCOUNT, this.socketConfig.getTcpKeepCount());
+        if (ReflectionUtils.supportsKeepAliveOptions()) {
+            if (this.socketConfig.getTcpKeepIdle() > 0) {
+                Sockets.setOption(sock, ExtendedSocketOptions.TCP_KEEPIDLE, this.socketConfig.getTcpKeepIdle());
+            }
+            if (this.socketConfig.getTcpKeepInterval() > 0) {
+                Sockets.setOption(sock, ExtendedSocketOptions.TCP_KEEPINTERVAL, this.socketConfig.getTcpKeepInterval());
+            }
+            if (this.socketConfig.getTcpKeepCount() > 0) {
+                Sockets.setOption(sock, ExtendedSocketOptions.TCP_KEEPCOUNT, this.socketConfig.getTcpKeepCount());
+            }
         }
         final int linger = socketConfig.getSoLinger().toMillisecondsIntBound();
         if (linger >= 0) {
diff --git a/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpServer.java b/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpServer.java
index 8b403389d..8a67d4ec3 100644
--- a/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpServer.java
+++ b/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/HttpServer.java
@@ -59,6 +59,7 @@
 import org.apache.hc.core5.io.Closer;
 import org.apache.hc.core5.io.ModalCloseable;
 import org.apache.hc.core5.util.Args;
+import org.apache.hc.core5.util.ReflectionUtils;
 import org.apache.hc.core5.util.TimeValue;
 import org.apache.hc.core5.util.Timeout;
 
@@ -139,6 +140,7 @@ public int getLocalPort() {
         return -1;
     }
 
+    @SuppressWarnings("Since15")
     public void start() throws IOException {
         if (this.status.compareAndSet(Status.READY, Status.ACTIVE)) {
             this.serverSocket = this.serverSocketFactory.createServerSocket(
@@ -147,14 +149,16 @@ public void start() throws IOException {
             if (this.socketConfig.getRcvBufSize() > 0) {
                 this.serverSocket.setReceiveBufferSize(this.socketConfig.getRcvBufSize());
             }
-            if (this.socketConfig.getTcpKeepIdle() > 0) {
-                Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPIDLE, this.socketConfig.getTcpKeepIdle());
-            }
-            if (this.socketConfig.getTcpKeepInterval() > 0) {
-                Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPINTERVAL, this.socketConfig.getTcpKeepInterval());
-            }
-            if (this.socketConfig.getTcpKeepCount() > 0) {
-                Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPCOUNT, this.socketConfig.getTcpKeepCount());
+            if (ReflectionUtils.supportsKeepAliveOptions()) {
+                if (this.socketConfig.getTcpKeepIdle() > 0) {
+                    Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPIDLE, this.socketConfig.getTcpKeepIdle());
+                }
+                if (this.socketConfig.getTcpKeepInterval() > 0) {
+                    Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPINTERVAL, this.socketConfig.getTcpKeepInterval());
+                }
+                if (this.socketConfig.getTcpKeepCount() > 0) {
+                    Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPCOUNT, this.socketConfig.getTcpKeepCount());
+                }
             }
             if (this.sslSetupHandler != null && this.serverSocket instanceof SSLServerSocket) {
                 final SSLServerSocket sslServerSocket = (SSLServerSocket) this.serverSocket;
diff --git a/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/RequestListener.java b/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/RequestListener.java
index c2b1fd30c..9d0677197 100644
--- a/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/RequestListener.java
+++ b/httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/RequestListener.java
@@ -47,6 +47,7 @@
 import org.apache.hc.core5.http.io.HttpServerConnection;
 import org.apache.hc.core5.http.io.SocketConfig;
 import org.apache.hc.core5.io.Closer;
+import org.apache.hc.core5.util.ReflectionUtils;
 
 class RequestListener implements Runnable {
 
@@ -80,6 +81,7 @@ public RequestListener(
         this.terminated = new AtomicBoolean();
     }
 
+    @SuppressWarnings("Since15")
     private HttpServerConnection createConnection(final Socket socket) throws IOException {
         socket.setSoTimeout(this.socketConfig.getSoTimeout().toMillisecondsIntBound());
         socket.setKeepAlive(this.socketConfig.isSoKeepAlive());
@@ -93,14 +95,16 @@ private HttpServerConnection createConnection(final Socket socket) throws IOExce
         if (this.socketConfig.getSoLinger().toSeconds() >= 0) {
             socket.setSoLinger(true, this.socketConfig.getSoLinger().toSecondsIntBound());
         }
-        if (this.socketConfig.getTcpKeepIdle() > 0) {
-            Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPIDLE, this.socketConfig.getTcpKeepIdle());
-        }
-        if (this.socketConfig.getTcpKeepInterval() > 0) {
-            Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPINTERVAL, this.socketConfig.getTcpKeepInterval());
-        }
-        if (this.socketConfig.getTcpKeepCount() > 0) {
-            Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPCOUNT, this.socketConfig.getTcpKeepCount());
+        if (ReflectionUtils.supportsKeepAliveOptions()) {
+            if (this.socketConfig.getTcpKeepIdle() > 0) {
+                Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPIDLE, this.socketConfig.getTcpKeepIdle());
+            }
+            if (this.socketConfig.getTcpKeepInterval() > 0) {
+                Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPINTERVAL, this.socketConfig.getTcpKeepInterval());
+            }
+            if (this.socketConfig.getTcpKeepCount() > 0) {
+                Sockets.setOption(this.serverSocket, ExtendedSocketOptions.TCP_KEEPCOUNT, this.socketConfig.getTcpKeepCount());
+            }
         }
         if (!(socket instanceof SSLSocket) && sslSocketFactory != null) {
             final SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(socket, null, -1, false);
diff --git a/httpcore5/src/main/java/org/apache/hc/core5/reactor/SingleCoreIOReactor.java b/httpcore5/src/main/java/org/apache/hc/core5/reactor/SingleCoreIOReactor.java
index 65a8f9cb7..7510c26f9 100644
--- a/httpcore5/src/main/java/org/apache/hc/core5/reactor/SingleCoreIOReactor.java
+++ b/httpcore5/src/main/java/org/apache/hc/core5/reactor/SingleCoreIOReactor.java
@@ -55,6 +55,7 @@
 import org.apache.hc.core5.io.Closer;
 import org.apache.hc.core5.net.NamedEndpoint;
 import org.apache.hc.core5.util.Args;
+import org.apache.hc.core5.util.ReflectionUtils;
 import org.apache.hc.core5.util.Timeout;
 
 class SingleCoreIOReactor extends AbstractSingleCoreIOReactor implements ConnectionInitiator, IOWorkerStats {
@@ -278,6 +279,7 @@ public Future<IOSession> connect(
         return sessionRequest;
     }
 
+    @SuppressWarnings("Since15")
     private void prepareSocket(final SocketChannel socketChannel) throws IOException {
         if (this.reactorConfig.getSndBufSize() > 0) {
             socketChannel.setOption(StandardSocketOptions.SO_SNDBUF, this.reactorConfig.getSndBufSize());
@@ -300,14 +302,16 @@ private void prepareSocket(final SocketChannel socketChannel) throws IOException
         if (this.reactorConfig.getTrafficClass() > 0) {
             socketChannel.setOption(StandardSocketOptions.IP_TOS, this.reactorConfig.getTrafficClass());
         }
-        if (this.reactorConfig.getTcpKeepIdle() > 0) {
-            socketChannel.setOption(ExtendedSocketOptions.TCP_KEEPIDLE, this.reactorConfig.getTcpKeepIdle());
-        }
-        if (this.reactorConfig.getTcpKeepInterval() > 0) {
-            socketChannel.setOption(ExtendedSocketOptions.TCP_KEEPINTERVAL, this.reactorConfig.getTcpKeepInterval());
-        }
-        if (this.reactorConfig.getTcpKeepCount() > 0) {
-            socketChannel.setOption(ExtendedSocketOptions.TCP_KEEPCOUNT, this.reactorConfig.getTcpKeepCount());
+        if (ReflectionUtils.supportsKeepAliveOptions()) {
+            if (this.reactorConfig.getTcpKeepIdle() > 0) {
+                socketChannel.setOption(ExtendedSocketOptions.TCP_KEEPIDLE, this.reactorConfig.getTcpKeepIdle());
+            }
+            if (this.reactorConfig.getTcpKeepInterval() > 0) {
+                socketChannel.setOption(ExtendedSocketOptions.TCP_KEEPINTERVAL, this.reactorConfig.getTcpKeepInterval());
+            }
+            if (this.reactorConfig.getTcpKeepCount() > 0) {
+                socketChannel.setOption(ExtendedSocketOptions.TCP_KEEPCOUNT, this.reactorConfig.getTcpKeepCount());
+            }
         }
     }
 
diff --git a/httpcore5/src/main/java/org/apache/hc/core5/util/ReflectionUtils.java b/httpcore5/src/main/java/org/apache/hc/core5/util/ReflectionUtils.java
index 749268dba..4ef59075e 100644
--- a/httpcore5/src/main/java/org/apache/hc/core5/util/ReflectionUtils.java
+++ b/httpcore5/src/main/java/org/apache/hc/core5/util/ReflectionUtils.java
@@ -27,12 +27,20 @@
 
 package org.apache.hc.core5.util;
 
-import java.lang.reflect.Method;
-
+import jdk.net.ExtendedSocketOptions;
+import jdk.net.Sockets;
 import org.apache.hc.core5.annotation.Internal;
 
+import java.lang.reflect.Method;
+import java.net.Socket;
+import java.util.Arrays;
+
 @Internal
+@SuppressWarnings("Since15")
 public final class ReflectionUtils {
+    private static final boolean SUPPORTS_KEEPALIVE_OPTIONS = Sockets.supportedOptions(Socket.class)
+            .containsAll(Arrays.asList(ExtendedSocketOptions.TCP_KEEPIDLE, ExtendedSocketOptions.TCP_KEEPINTERVAL,
+                    ExtendedSocketOptions.TCP_KEEPCOUNT));
 
     public static void callSetter(final Object object, final String setterName, final Class<?> type, final Object value) {
         try {
@@ -89,4 +97,7 @@ public static int determineJRELevel() {
         return 7;
     }
 
+    public static boolean supportsKeepAliveOptions() {
+        return SUPPORTS_KEEPALIVE_OPTIONS;
+    }
 }