Suppress sonar warnings

src/main/java/org/chris/portmapper/PortMapperStarter.java

@@ -25,6 +25,7 @@ public class PortMapperStarter {
 
     private static final Logger LOG = LoggerFactory.getLogger(PortMapperStarter.class);
 
+    @SuppressWarnings("java:S4823") // Command line arguments are used securely
     public static void main(final String[] args) {
         redirectJavaUtilLoggingToLogback();
         final PortMapperCli cli = new PortMapperCli();

src/main/java/org/chris/portmapper/logging/LogbackConfiguration.java

@@ -47,6 +47,7 @@ public class LogbackConfiguration {
         configureLogger(appender);
     }
 
+    @SuppressWarnings("java:S4792") // Logger configuration is ok
     private void configureLogger(final OutputStreamAppender<ILoggingEvent> appender) {
         final Logger logbackLogger = getLogger();
         logbackLogger.addAppender(appender);
@@ -76,6 +77,7 @@ public class LogbackConfiguration {
         return encoder;
     }
 
+    @SuppressWarnings("java:S4792") // Logger configuration is ok
     public void setLogLevel(final String logLevel) {
         final Level level = Level.toLevel(logLevel);
         getLogger().setLevel(level);

src/main/java/org/chris/portmapper/router/AbstractRouter.java

@@ -77,6 +77,7 @@ public abstract class AbstractRouter implements IRouter {
      * @return the ip of the local host.
      * @throws RouterException
      */
+    @SuppressWarnings("java:S4818") // Sockets are used safely here
     private InetAddress getLocalHostAddressFromSocket() throws RouterException {
         InetAddress localHostIP = null;
         try {
@@ -126,6 +127,7 @@ public abstract class AbstractRouter implements IRouter {
      * @return the ip of the local host.
      * @throws RouterException
      */
+    @SuppressWarnings("java:S1313") // Hard coded IP address used by intention
     private InetAddress getLocalHostAddressFromDatagramSocket() throws RouterException {
         try (final DatagramSocket socket = new DatagramSocket()) {
             // What matters for IP and port is that they are valid