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-rw-r--r--utils/src/main/java/org/onap/policy/common/utils/network/NetworkUtil.java79
1 files changed, 76 insertions, 3 deletions
diff --git a/utils/src/main/java/org/onap/policy/common/utils/network/NetworkUtil.java b/utils/src/main/java/org/onap/policy/common/utils/network/NetworkUtil.java
index ae70ba44..aca34bbe 100644
--- a/utils/src/main/java/org/onap/policy/common/utils/network/NetworkUtil.java
+++ b/utils/src/main/java/org/onap/policy/common/utils/network/NetworkUtil.java
@@ -1,8 +1,8 @@
-/*-
+/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
- * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -23,9 +23,13 @@ package org.onap.policy.common.utils.network;
import java.io.IOException;
import java.net.ConnectException;
import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
-
+import java.security.cert.X509Certificate;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509TrustManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -41,11 +45,80 @@ public class NetworkUtil {
*/
public static final String IPv4_WILDCARD_ADDRESS = "0.0.0.0";
+
+ /**
+ * A trust manager that always trusts certificates.
+ */
+ // @formatter:off
+ private static final TrustManager[] ALWAYS_TRUST_MANAGER = new TrustManager[] {
+ new X509TrustManager() {
+
+ @Override
+ public X509Certificate[] getAcceptedIssuers() {
+ return new X509Certificate[0];
+ }
+
+ @Override
+ public void checkClientTrusted(final java.security.cert.X509Certificate[] certs,
+ final String authType) {}
+
+ @Override
+ public void checkServerTrusted(final java.security.cert.X509Certificate[] certs,
+ final String authType) {}
+ }
+ };
+ // @formatter:on
+
private NetworkUtil() {
// Empty constructor
}
/**
+ * Allocates an available port on which a server may listen.
+ *
+ * @return an available port
+ * @throws IOException if a socket cannot be created
+ */
+ public static int allocPort() throws IOException {
+ return allocPort((InetSocketAddress) null);
+ }
+
+ /**
+ * Allocates an available port on which a server may listen.
+ *
+ * @param hostName the server's host name
+ * @return an available port
+ * @throws IOException if a socket cannot be created
+ */
+ public static int allocPort(String hostName) throws IOException {
+ return allocPort(new InetSocketAddress(hostName, 0));
+ }
+
+ /**
+ * Allocates an available port on which a server may listen.
+ *
+ * @param hostAddr the server's host address on which to listen
+ * @return an available port
+ * @throws IOException if a socket cannot be created
+ */
+ public static int allocPort(InetSocketAddress hostAddr) throws IOException {
+ try (ServerSocket socket = new ServerSocket()) {
+ socket.bind(hostAddr);
+
+ return socket.getLocalPort();
+ }
+ }
+
+ /**
+ * Gets a trust manager that accepts all certificates.
+ *
+ * @return a trust manager that accepts all certificates
+ */
+ public static TrustManager[] getAlwaysTrustingManager() {
+ return ALWAYS_TRUST_MANAGER;
+ }
+
+ /**
* try to connect to $host:$port $retries times while we are getting connection failures.
*
* @param host host