Tolerate AbstractMethodError for servletRequest remote port (#11403)

Tolerate AbstractMethodError for servletRequest remote port

Co-authored-by: devflow.devflow-routing-intake <devflow.devflow-routing-intake@kubernetes.us1.ddbuild.io>

Author: amarziali

dd-java-agent/instrumentation/servlet/javax-servlet/javax-servlet-3.0/src/main/java/datadog/trace/instrumentation/servlet3/Servlet3Decorator.java

@@ -1,5 +1,7 @@
 package datadog.trace.instrumentation.servlet3;
 
+import static datadog.trace.api.telemetry.LogCollector.EXCLUDE_TELEMETRY;
+
 import datadog.context.Context;
 import datadog.trace.api.ClassloaderConfigurationOverrides;
 import datadog.trace.bootstrap.instrumentation.api.AgentPropagation;
@@ -10,6 +12,8 @@
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class Servlet3Decorator
     extends HttpServerDecorator<
@@ -21,6 +25,7 @@ public class Servlet3Decorator
       UTF8BytesString.create(DECORATE.operationName());
   public static final String DD_CONTEXT_PATH_ATTRIBUTE = "datadog.context.path";
   public static final String DD_SERVLET_PATH_ATTRIBUTE = "datadog.servlet.path";
+  private static final Logger LOGGER = LoggerFactory.getLogger(Servlet3Decorator.class);
 
   @Override
   protected String[] instrumentationNames() {
@@ -64,7 +69,15 @@ protected String peerHostIP(final HttpServletRequest httpServletRequest) {
 
   @Override
   protected int peerPort(final HttpServletRequest httpServletRequest) {
-    return httpServletRequest.getRemotePort();
+    try {
+      return httpServletRequest.getRemotePort();
+    } catch (AbstractMethodError e) {
+      LOGGER.debug(
+          EXCLUDE_TELEMETRY,
+          "Method not implemented when trying to get the request remote port",
+          e);
+      return 0; // 0 will be handled as `no port` by the caller
+    }
   }
 
   @Override