feat(multiplayer): auto rejection.

HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java

@@ -176,8 +176,11 @@ public final class MessageDialogPane extends StackPane {
 
                 @Override
                 public void run() {
-                    if (timeout < 0) {
+                    if (timeout <= 0) {
                         cancel();
+                        runInFX(() -> {
+                            cancelButton.fire();
+                        });
                         return;
                     }
                     timeout -= 1000;

HMCL/src/main/java/org/jackhuang/hmcl/ui/multiplayer/MultiplayerPage.java

@@ -46,6 +46,7 @@ import java.util.logging.Level;
 
 import static org.jackhuang.hmcl.setting.ConfigHolder.globalConfig;
 import static org.jackhuang.hmcl.ui.FXUtils.runInFX;
+import static org.jackhuang.hmcl.util.Lang.resolveException;
 import static org.jackhuang.hmcl.util.Logging.LOG;
 import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
 
@@ -215,7 +216,7 @@ public class MultiplayerPage extends DecoratorAnimatedPage implements DecoratorP
                 session.getServer().setOnClientAdding((client, resolveClient, rejectClient) -> {
                     runInFX(() -> {
                         Controllers.dialog(new MessageDialogPane.Builder(i18n("multiplayer.session.create.join.prompt", client.getUsername()), i18n("multiplayer.session.create.join"), MessageDialogPane.MessageType.INFO)
-                                .yesOrNo(resolveClient, () -> rejectClient.accept(""))
+                                .yesOrNo(resolveClient, () -> rejectClient.accept(i18n("multiplayer.session.join.wait_timeout")))
                                 .cancelOnTimeout(30 * 1000)
                                 .build());
                     });
@@ -314,20 +315,21 @@ public class MultiplayerPage extends DecoratorAnimatedPage implements DecoratorP
                             resolve.run();
                         }, Platform::runLater)
                         .exceptionally(throwable -> {
-                            if (throwable instanceof CancellationException) {
+                            Throwable resolved = resolveException(throwable);
+                            if (resolved instanceof CancellationException) {
                                 LOG.info("Connection rejected by the server");
                                 reject.accept(i18n("multiplayer.session.join.rejected"));
                                 return null;
-                            } else if (throwable instanceof MultiplayerManager.CatoAlreadyStartedException) {
+                            } else if (resolved instanceof MultiplayerManager.CatoAlreadyStartedException) {
                                 LOG.info("Cato already started");
                                 reject.accept(i18n("multiplayer.session.error.already_started"));
                                 return null;
-                            } else if (throwable instanceof MultiplayerManager.JoinRequestTimeoutException) {
+                            } else if (resolved instanceof MultiplayerManager.JoinRequestTimeoutException) {
                                 LOG.info("Cato already started");
                                 reject.accept(i18n("multiplayer.session.join.wait_timeout"));
                                 return null;
                             } else {
-                                LOG.log(Level.WARNING, "Failed to join sessoin");
+                                LOG.log(Level.WARNING, "Failed to join session", resolved);
                                 reject.accept(i18n("multiplayer.session.join.error"));
                             }
                             return null;
@@ -389,7 +391,9 @@ public class MultiplayerPage extends DecoratorAnimatedPage implements DecoratorP
     }
 
     private void stopCatoSession() {
-        getSession().stop();
+        if (getSession() != null) {
+            getSession().stop();
+        }
         clearCatoSession();
     }
 

HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties

@@ -666,7 +666,7 @@ multiplayer.session.create.token.prompt=默认为临时 Token。你可以在 noi
 multiplayer.session.error.already_started=本地已经开启 cato 服务，请检查是否有其他 HMCL 正在运行联机服务。或者你可以在任务管理器里杀掉 cato 进程以继续。
 multiplayer.session.expired=联机会话连续使用时间超过了 3 小时，你需要重新创建/加入房间以继续联机。
 multiplayer.session.join=加入房间
-multiplayer.session.join.error=加入房间失败
+multiplayer.session.join.error=加入房间失败。如果你或对方的网络类型是差（对称型），可能无法使用联机功能。
 multiplayer.session.join.hint=你需要向已经创建好房间的玩家索要邀请码以便加入多人联机房间
 multiplayer.session.join.invitation_code=邀请码
 multiplayer.session.join.invitation_code.error=邀请码不正确，请向开服玩家获取邀请码

HMCLCore/src/main/java/org/jackhuang/hmcl/task/AsyncTaskExecutor.java

@@ -26,8 +26,7 @@ import java.util.Collections;
 import java.util.concurrent.*;
 import java.util.logging.Level;
 
-import static org.jackhuang.hmcl.util.Lang.rethrow;
+import static org.jackhuang.hmcl.util.Lang.*;
-import static org.jackhuang.hmcl.util.Lang.wrap;
 
 /**
  *
@@ -320,13 +319,6 @@ public final class AsyncTaskExecutor extends TaskExecutor {
         }
     }
 
-    private static Throwable resolveException(Throwable e) {
-        if (e instanceof ExecutionException || e instanceof CompletionException)
-            return resolveException(e.getCause());
-        else
-            return e;
-    }
-
     private void checkCancellation() {
         if (isCancelled()) {
             throw new CancellationException("Cancelled by user");

HMCLCore/src/main/java/org/jackhuang/hmcl/util/Lang.java

@@ -377,6 +377,13 @@ public final class Lang {
         return task;
     }
 
+    public static Throwable resolveException(Throwable e) {
+        if (e instanceof ExecutionException || e instanceof CompletionException)
+            return resolveException(e.getCause());
+        else
+            return e;
+    }
+
     /**
      * This is a useful function to prevent exceptions being eaten when using CompletableFuture.
      * You can write: