minor refactoring

src/main/java/eu/m724/autopeerer/client/PacketHandler.java

@@ -18,6 +18,8 @@ import eu.m724.autopeerer.common.packet.c2s.SessionResponsePacket;
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.nio.BufferUnderflowException;
@@ -76,10 +78,22 @@ public class PacketHandler {
 
     private void handlePingRequest(PingRequestPacket packet) {
         System.out.printf("Ping request #%d to %s\n", packet.requestId, packet.target.getHostAddress());
+
+
+
+
         CompletableFuture.runAsync(() -> {
             float average = -1, meanDeviation = -1;
             var status = PingResponsePacket.PingResponseStatus.ERROR;
 
+            if (packet.target instanceof Inet6Address && !Connectivity.ipv6()) {
+                // target ipv6 but no ipv6
+                status = PingResponsePacket.PingResponseStatus.UNREACHABLE_PROTOCOL;
+            } else if (packet.target instanceof Inet4Address && !Connectivity.ipv4()) {
+                // target ipv4 but no ipv4
+                status = PingResponsePacket.PingResponseStatus.UNREACHABLE_PROTOCOL;
+            } else {
+                // target ip version supported
                 try {
                     // -3 was also an arumetn but not wokring on all
                     Process process = Runtime.getRuntime().exec(new String[] { "ping", "-Ac", "10", "-W", "1", packet.target.getHostAddress() });
@@ -109,6 +123,7 @@ public class PacketHandler {
                 } catch (IOException | InterruptedException e) {
                     System.err.println("Error executing ping request: " + e.getMessage());
                 }
+            }
 
             System.out.printf("Ping request #%d to %s - %s avg %.3f / mdev %.3f ms\n", packet.requestId, packet.target.getHostAddress(), status, average, meanDeviation);
             try {

src/main/java/eu/m724/autopeerer/common/AddressTools.java

@@ -7,7 +7,7 @@ import java.net.UnknownHostException;
 import java.util.Arrays;
 
 public class AddressTools {
-    private static boolean isIp(InetAddress address, boolean ipv6) {
+    public static boolean isIp(InetAddress address, boolean ipv6) {
         return ipv6 ? address instanceof Inet6Address : address instanceof Inet4Address;
     }
 

src/main/java/eu/m724/autopeerer/common/packet/c2s/PingResponsePacket.java

@@ -29,8 +29,12 @@ public class PingResponsePacket implements Packet<PingResponsePacket> {
 
         var status = PingResponseStatus.OK;
 
-        if (average == -1) {
+        if (average == -1 && meanDeviation == 0) {
-            status = meanDeviation == 0 ? PingResponseStatus.UNREACHABLE : PingResponseStatus.ERROR;
+            status = PingResponseStatus.UNREACHABLE;
+        } else if (average == -1 && meanDeviation == -1) {
+            status = PingResponseStatus.ERROR;
+        } else if (average == 0 && meanDeviation == -1) {
+            status = PingResponseStatus.UNREACHABLE_PROTOCOL;
         }
 
         return new PingResponsePacket(requestId, status, average, meanDeviation);
@@ -53,11 +57,15 @@ public class PingResponsePacket implements Packet<PingResponsePacket> {
                 bb.putFloat(-1);
                 bb.putFloat(-1);
             }
+            case UNREACHABLE_PROTOCOL -> {
+                bb.putFloat(0);
+                bb.putFloat(-1);
+            }
         }
         return bb;
     }
 
     public enum PingResponseStatus {
-        OK, UNREACHABLE, ERROR
+        OK, UNREACHABLE, ERROR, UNREACHABLE_PROTOCOL
     }
 }

src/main/java/eu/m724/autopeerer/server/MyHttpHandler.java

@@ -187,7 +187,9 @@ public class MyHttpHandler implements HttpHandler {
 
                             if (packet.result == SessionResponsePacket.SessionResult.OK) {
                                 resp.put("port", packet.port)
-                                        .put("publicKey", packet.publicKey);
+                                        .put("publicKey", packet.publicKey)
+                                        .put("endpoint", node.getNodeProfile().hostname() + ":" + packet.port)
+                                        .put("linkLocal", node.getNodeProfile().linkLocal());
                             }
 
                             sseWrite(exchange, resp.toString());
@@ -205,6 +207,8 @@ public class MyHttpHandler implements HttpHandler {
                     return null;
                 });
 
+            } else {
+                sendResponse(exchange, 404);
             }
         }
     }

src/main/java/eu/m724/autopeerer/server/Node.java

@@ -71,8 +71,8 @@ public final class Node {
                         properties.getProperty("hostname"),
                         linkLocal,
                         ipv4.equalsIgnoreCase("yes") || ipv4.equalsIgnoreCase("restricted"),
-                        ipv4.equalsIgnoreCase("restricted"),
                         ipv6.equalsIgnoreCase("yes") || ipv6.equalsIgnoreCase("restricted"),
+                        ipv4.equalsIgnoreCase("restricted"),
                         ipv6.equalsIgnoreCase("restricted")
                 )
         );