Expose PlayerConnection#isConnected (#13166)

Author: Warriorrrr

paper-api/src/main/java/io/papermc/paper/connection/PlayerConnection.java

@@ -16,6 +16,11 @@ public interface PlayerConnection {
      */
     void disconnect(Component component);
 
+    /**
+     * {@return whether this connection is currently open and active}
+     */
+    boolean isConnected();
+
     /**
      * Gets if this connection originated from a transferred connection.
      * <p>

paper-server/src/main/java/io/papermc/paper/connection/PaperPlayerConfigurationConnection.java

@@ -144,4 +144,9 @@ public void sendPluginMessage(final Plugin source, final String channel, final b
     public Set<String> getListeningPluginChannels() {
         return Set.copyOf(this.channels());
     }
+
+    @Override
+    public boolean isConnected() {
+        return this.handle.connection.isConnected();
+    }
 }

paper-server/src/main/java/io/papermc/paper/connection/PaperPlayerGameConnection.java

@@ -39,4 +39,9 @@ public void sendPluginMessage(final Plugin source, final String channel, final b
     public Set<String> getListeningPluginChannels() {
         return getPlayer().getListeningPluginChannels();
     }
+
+    @Override
+    public boolean isConnected() {
+        return getPlayer().isConnected();
+    }
 }

paper-server/src/main/java/io/papermc/paper/connection/PaperPlayerLoginConnection.java

@@ -61,4 +61,9 @@ public boolean isTransferred() {
     public void disconnect(final Component component) {
         this.packetListener.disconnect(PaperAdventure.asVanilla(component));
     }
+
+    @Override
+    public boolean isConnected() {
+        return this.packetListener.connection.isConnected();
+    }
 }