Merge pull request #7 from Minecraft-Java-Edition-Speedrunning/fix_no_internet_crash

fixes a no internet crash

Author: VoidXWalker

src/main/java/me/voidxwalker/serversiderng/RNGHandler.java

@@ -9,6 +9,8 @@
 import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
+import java.net.ConnectException;
+import java.net.UnknownHostException;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.Random;
@@ -50,7 +52,12 @@ public void log(Level level,String message){
     public static RNGHandler createRNGHandlerOrNull(long runId) {
         try {
             return new RNGHandler(new Random(ServerSideRNG.getGetRandomToken(runId).get("random").getAsLong()).nextLong());
-        } catch (IOException | NullPointerException e) {
+        }
+        catch (UnknownHostException | ConnectException e){
+            ServerSideRNG.log(Level.WARN,"Failed to create new RNGHandler: Could not connect to the Server.");
+            return null;
+        }
+        catch (IOException | NullPointerException e) {
             ServerSideRNG.log(Level.WARN,"Failed to create new RNGHandler: ");
             e.printStackTrace();
             return null;
@@ -207,7 +214,4 @@ public RandomMapEntry(Random random){
             useTimes=0;
         }
     }
-}
-
-
-
+}

src/main/java/me/voidxwalker/serversiderng/RNGSession.java

@@ -5,6 +5,8 @@
 import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
+import java.net.ConnectException;
+import java.net.UnknownHostException;
 import java.util.Optional;
 import java.util.Random;
 import java.util.concurrent.CompletableFuture;
@@ -129,7 +131,12 @@ public static boolean inSession() {
     public static RNGSession createRNGSessionOrNull() {
         try {
             return new RNGSession(ServerSideRNG.getStartRunToken());
-        } catch (IOException e) {
+        }
+        catch (UnknownHostException | ConnectException e){
+            ServerSideRNG.log(Level.WARN,"Failed to create new RNGSession: Could not connect to the Server.");
+            return null;
+        }
+        catch (IOException e) {
             ServerSideRNG.log(Level.WARN,"Failed to create new RNGSession: ");
             e.printStackTrace();
             return null;
@@ -208,8 +215,6 @@ boolean updateSessionState(){
     public void getRngHandlerFromFuture() {
         try {
             currentRNGHandler = rngHandlerCompletableFuture.get(1L, TimeUnit.SECONDS);
-            currentRNGHandler.activate(handlerIndex++);
-            currentRNGHandler.log(Level.INFO,"Successfully updated the current RNGHandler!");
         } catch (InterruptedException | ExecutionException | TimeoutException e) {
             e.printStackTrace();
         }
@@ -222,8 +227,15 @@ public void getRngHandlerFromFuture() {
             }
             else {
                 this.log(Level.WARN,"Failed to update the current RNGHandler!");
+                return;
             }
         }
+        else {
+            currentRNGHandler.activate(handlerIndex++);
+            currentRNGHandler.log(Level.INFO,"Successfully updated the current RNGHandler!");
+        }
+
+
         rngHandlerCompletableFuture = CompletableFuture.supplyAsync(()-> RNGHandler.createRNGHandlerOrNull(runId));
     }
     /**