Increase ephemeral ports range for ServerTransportFilterIntegrationTe…

…sts (#112279)

This PR increases client's port range for `ServerTransportFilterIntegrationTests`
which are executed on Windows. This is needed in order to avoid failures
due to some port ranges being excluded from use.
The larger ports range (300) is chosen based on the observation where a
random consecutive range of 200 ports can be excluded on Windows test workers.

x-pack/plugin/security/src/internalClusterTest/java/org/elasticsearch/xpack/security/transport/ServerTransportFilterIntegrationTests.java

@@ -6,6 +6,7 @@
  */
 package org.elasticsearch.xpack.security.transport;
 
+import org.apache.lucene.util.Constants;
 import org.elasticsearch.ElasticsearchSecurityException;
 import org.elasticsearch.Version;
 import org.elasticsearch.action.support.PlainActionFuture;
@@ -53,11 +54,14 @@
 import static org.hamcrest.CoreMatchers.instanceOf;
 
 public class ServerTransportFilterIntegrationTests extends SecurityIntegTestCase {
+
+    private static final int NUMBER_OF_CLIENT_PORTS = Constants.WINDOWS ? 300 : 100;
+
     private static int randomClientPort;
 
     @BeforeClass
     public static void getRandomPort() {
-        randomClientPort = randomIntBetween(49000, 65500); // ephemeral port
+        randomClientPort = randomIntBetween(49152, 65535 - NUMBER_OF_CLIENT_PORTS); // ephemeral port
     }
 
     @Override
@@ -68,7 +72,7 @@ public boolean transportSSLEnabled() {
     @Override
     protected Settings nodeSettings(int nodeOrdinal, Settings otherSettings) {
         Settings.Builder settingsBuilder = Settings.builder().put(super.nodeSettings(nodeOrdinal, otherSettings));
-        String randomClientPortRange = randomClientPort + "-" + (randomClientPort + 100);
+        String randomClientPortRange = randomClientPort + "-" + (randomClientPort + NUMBER_OF_CLIENT_PORTS);
         addSSLSettingsForNodePEMFiles(settingsBuilder, "transport.profiles.client.xpack.security.", true);
         Path certPath = getDataPath("/org/elasticsearch/xpack/security/transport/ssl/certs/simple/testnode.crt");
         settingsBuilder.putList(