TeamSpeak: ServerQuery über SSH statt Beobachter-Client (kein dauerhafter Slot)

bridge/src/main/java/eu/mhsl/voicebridge/bridge/BridgeConfig.java

@@ -21,8 +21,9 @@ public record BridgeConfig(
     Discord discord,
     List<RoomConfig> rooms
 ) {
-    public record Teamspeak(String host, int port, String password, String parentChannel, String nickname,
-                            String roomNickname, int securityLevel, ClientVersion clientVersion) {
+    public record Teamspeak(String host, int port, String password, int queryPort, String queryLogin,
+                            String queryPassword, String parentChannel, String roomNickname, int securityLevel,
+                            ClientVersion clientVersion) {
         public boolean enabled() { return !host.isBlank(); }
     }
 
@@ -72,8 +73,9 @@ public record BridgeConfig(
             Path.of(string(root, "dataDir", "data")),
             integer(root, "lingerSeconds", 15) * 1000L,
             new Teamspeak(string(ts, "host", ""), integer(ts, "port", 9987), string(ts, "password", ""),
-                string(ts, "parentChannel", "0"), string(ts, "nickname", "Crosstalk"),
-                string(ts, "roomNickname", "%room% (MC/DC)"), integer(ts, "securityLevel", 15), version),
+                integer(ts, "queryPort", 10022), string(ts, "queryLogin", ""), string(ts, "queryPassword", ""),
+                string(ts, "parentChannel", "0"), string(ts, "roomNickname", "%room% (MC/DC)"),
+                integer(ts, "securityLevel", 15), version),
             new Discord(string(dc, "guild", ""), string(dc, "category", ""),
                 string(dc, "nickname", "%room% (MC/TS)")),
             List.copyOf(rooms));

bridge/src/main/java/eu/mhsl/voicebridge/bridge/teamspeak/TeamspeakSide.java

@@ -1,27 +1,12 @@
 package eu.mhsl.voicebridge.bridge.teamspeak;
 
-import com.github.manevolent.ts3j.command.SingleCommand;
-import com.github.manevolent.ts3j.command.parameter.CommandSingleParameter;
-import com.github.manevolent.ts3j.event.ChannelCreateEvent;
-import com.github.manevolent.ts3j.event.ChannelDeletedEvent;
-import com.github.manevolent.ts3j.event.ChannelEditedEvent;
-import com.github.manevolent.ts3j.event.ChannelListEvent;
-import com.github.manevolent.ts3j.event.ChannelMovedEvent;
-import com.github.manevolent.ts3j.event.ClientJoinEvent;
-import com.github.manevolent.ts3j.event.ClientLeaveEvent;
-import com.github.manevolent.ts3j.event.ClientMovedEvent;
-import com.github.manevolent.ts3j.event.DisconnectedEvent;
-import com.github.manevolent.ts3j.event.TS3Listener;
 import com.github.manevolent.ts3j.identity.LocalIdentity;
-import com.github.manevolent.ts3j.protocol.ProtocolRole;
-import com.github.manevolent.ts3j.protocol.socket.client.LocalTeamspeakClientSocket;
 import eu.mhsl.voicebridge.bridge.BridgeConfig;
 import eu.mhsl.voicebridge.bridge.Room;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
-import java.net.InetSocketAddress;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.security.GeneralSecurityException;
@@ -35,13 +20,14 @@ import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 
 /**
- * TeamSpeak-Anbindung. Ein Beobachter-Client bleibt dauerhaft verbunden, sieht so alle Clients und
- * Channels und legt fehlende Raum-Channels an. Pro aktivem Raum verbindet sich zusätzlich ein
- * {@link TeamspeakRoomClient}, der im Raum-Channel spricht und zuhört.
+ * TeamSpeak-Anbindung. Eine ServerQuery (belegt keinen Slot) sieht alle Clients und Channels und legt
+ * fehlende Raum-Channels an. Pro aktivem Raum verbindet sich ein {@link TeamspeakRoomClient}, der im
+ * Raum-Channel spricht und zuhört; nur diese Clients belegen Slots.
  */
-public final class TeamspeakSide implements TS3Listener {
+public final class TeamspeakSide {
     private static final Logger LOG = LoggerFactory.getLogger(TeamspeakSide.class);
-    private static final long RECONNECT_SECONDS = 30;
+    private static final long RECONNECT_SECONDS = 60;
+    private static final long RESYNC_SECONDS = 60;
     /** client_type 0 = normaler Client, 1 = ServerQuery. */
     private static final int CLIENT_TYPE_VOICE = 0;
     private static final long RETRY_MIN_MILLIS = 30_000;
@@ -64,7 +50,7 @@ public final class TeamspeakSide implements TS3Listener {
     private final Map<String, Long> backoff = new ConcurrentHashMap<>();
     private final Map<String, Long> nextAttempt = new ConcurrentHashMap<>();
 
-    private volatile LocalTeamspeakClientSocket observer;
+    private volatile TsQuery query;
     private volatile boolean ready;
     /** Channel, unter dem die Raum-Channels liegen (0 = oberste Ebene). */
     private volatile int parentChannel;
@@ -76,22 +62,8 @@ public final class TeamspeakSide implements TS3Listener {
     }
 
     public void start() {
-        executor.execute(this::connectObserver);
-        executor.scheduleWithFixedDelay(this::retryMissingChannels, RECONNECT_SECONDS, RECONNECT_SECONDS, TimeUnit.SECONDS);
-    }
-
-    /** Fehlende Raum-Channels erneut anlegen, z. B. nachdem jemand dem Beobachter die Rechte gegeben hat. */
-    private void retryMissingChannels() {
-        LocalTeamspeakClientSocket socket = observer;
-        if (!ready || socket == null || rooms.stream().allMatch(room -> roomChannels.containsKey(room.key()))) return;
-        try {
-            resolveChannels(socket);
-            joinParent(socket);
-        } catch (InterruptedException e) {
-            Thread.currentThread().interrupt();
-        } catch (Exception e) {
-            LOG.warn("Fehlende TeamSpeak-Channels: {}", e.toString());
-        }
+        executor.execute(this::connectQuery);
+        executor.scheduleWithFixedDelay(this::resync, RESYNC_SECONDS, RESYNC_SECONDS, TimeUnit.SECONDS);
     }
 
     public boolean ready() {
@@ -157,88 +129,78 @@ public final class TeamspeakSide implements TS3Listener {
 
     private Set<Integer> ownClientIds() {
         Set<Integer> own = new HashSet<>();
-        LocalTeamspeakClientSocket socket = observer;
-        if (socket != null) own.add(socket.getClientId());
         for (TeamspeakRoomClient client : roomClients.values()) own.add(client.clientId());
         return own;
     }
 
-    private void connectObserver() {
+    // --- ServerQuery ---
+
+    private void connectQuery() {
         try {
-            LocalTeamspeakClientSocket socket = TeamspeakRoomClient.newSocket(config, loadIdentity("ts-observer.ini"),
-                config.nickname());
-            socket.addListener(this);
-            observer = socket;
-            socket.connect(new InetSocketAddress(config.host(), config.port()), emptyToNull(config.password()), 15000L);
-            // Clients in nicht abonnierten Channels meldet der Server nicht
-            socket.subscribeAll();
-            awaitInitialState();
-            LOG.info("TeamSpeak verbunden mit {}:{} ({} Channels, {} Clients sichtbar)",
-                config.host(), config.port(), channels.size(), clients.size());
+            TsQuery q = new TsQuery(config.host(), config.queryPort(), config.queryLogin(), config.queryPassword(),
+                this::onNotification, () -> executor.execute(this::onQueryClosed));
+            query = q;
+            q.send("use", "port", Integer.toString(config.port()));
+            q.send("servernotifyregister", "event", "server");
+            q.send("servernotifyregister", "event", "channel", "id", "0");
+            loadChannels(q);
+            loadClients(q);
             parentChannel = resolveParent();
-            resolveChannels(socket);
-            joinParent(socket);
+            resolveChannels(q);
             ready = true;
+            LOG.info("TeamSpeak-Query verbunden mit {}:{} ({} Channels, {} Clients)",
+                config.host(), config.queryPort(), channels.size(), clients.size());
         } catch (Exception e) {
-            LOG.warn("TeamSpeak-Verbindung fehlgeschlagen ({}), neuer Versuch in {} s", e.toString(), RECONNECT_SECONDS);
-            disconnectObserver();
-            executor.schedule(this::connectObserver, RECONNECT_SECONDS, TimeUnit.SECONDS);
+            LOG.warn("TeamSpeak-Query fehlgeschlagen ({}), neuer Versuch in {} s", e.toString(), RECONNECT_SECONDS);
+            closeQuery();
+            executor.schedule(this::connectQuery, RECONNECT_SECONDS, TimeUnit.SECONDS);
         }
     }
 
-    /** ts3j liefert die Channel- und Client-Liste asynchron aus; warten, bis sie sich nicht mehr ändert. */
-    private void awaitInitialState() throws InterruptedException {
-        int last = -1;
-        for (int i = 0; i < 50; i++) {
-            int now = channels.size() + clients.size();
-            if (now == last && now > 0) return;
-            last = now;
-            Thread.sleep(200);
+    private void onQueryClosed() {
+        if (query == null) return; // absichtlich geschlossen
+        LOG.warn("TeamSpeak-Query getrennt, neuer Versuch in {} s", RECONNECT_SECONDS);
+        closeQuery();
+        executor.schedule(this::connectQuery, RECONNECT_SECONDS, TimeUnit.SECONDS);
+    }
+
+    private void closeQuery() {
+        ready = false;
+        TsQuery q = query;
+        query = null;
+        if (q != null) q.close();
+        clients.clear();
+        channels.clear();
+    }
+
+    /** Hält die Verbindung offen und gleicht verpasste Ereignisse aus. */
+    private void resync() {
+        TsQuery q = query;
+        if (!ready || q == null) return;
+        try {
+            loadClients(q);
+            if (rooms.stream().anyMatch(room -> !roomChannels.containsKey(room.key()))) resolveChannels(q);
+        } catch (IOException e) {
+            LOG.debug("TeamSpeak-Abgleich fehlgeschlagen: {}", e.toString());
         }
     }
 
-    private void resolveChannels(LocalTeamspeakClientSocket socket) throws InterruptedException {
-        for (Room room : rooms) {
-            if (roomChannels.containsKey(room.key())) continue;
-            int configured = room.config().teamspeakChannel();
-            if (configured > 0) {
-                roomChannels.put(room.key(), configured);
-                continue;
-            }
-            Integer found = findChannel(room.name());
-            if (found == null) {
-                try {
-                    socket.executeCommand(new SingleCommand("channelcreate", ProtocolRole.CLIENT,
-                        new CommandSingleParameter("channel_name", room.name()),
-                        new CommandSingleParameter("cpid", Integer.toString(parentChannel)),
-                        new CommandSingleParameter("channel_flag_permanent", "1"),
-                        new CommandSingleParameter("channel_codec", "4"))).get();
-                } catch (InterruptedException e) {
-                    throw e;
-                } catch (Exception e) {
-                    LOG.error("{}: TeamSpeak-Channel konnte nicht angelegt werden ({}). Fehlen dem Client "
-                        + "\"{}\" die Rechte zum Anlegen? Bis dahin ohne TeamSpeak.", room.name(), e, config.nickname());
-                    continue;
-                }
-                // Die Antwort enthält die cid nicht, sie kommt per notifychannelcreated.
-                for (int i = 0; i < 50 && found == null; i++) {
-                    Thread.sleep(100);
-                    found = findChannel(room.name());
-                }
-                if (found == null) {
-                    LOG.error("{}: TeamSpeak-Channel wurde nicht angelegt", room.name());
-                    continue;
-                }
-                LOG.info("TeamSpeak-Channel angelegt: {} ({})", room.name(), found);
-            }
-            roomChannels.put(room.key(), found);
+    private void loadChannels(TsQuery q) throws IOException {
+        Map<Integer, TsChannel> fresh = new ConcurrentHashMap<>();
+        for (Map<String, String> c : q.send("channellist")) {
+            fresh.put(parse(c.get("cid"), -1), new TsChannel(parse(c.get("pid"), 0), c.getOrDefault("channel_name", "")));
         }
+        channels.clear();
+        channels.putAll(fresh);
     }
 
-    /** Der Beobachter wartet im Eltern-Channel; wer einen Channel anlegt, kann dorthin verschoben werden. */
-    private void joinParent(LocalTeamspeakClientSocket socket) throws Exception {
-        TsClient self = clients.get(socket.getClientId());
-        if (parentChannel > 0 && (self == null || self.channel() != parentChannel)) socket.joinChannel(parentChannel, null);
+    private void loadClients(TsQuery q) throws IOException {
+        Map<Integer, TsClient> fresh = new ConcurrentHashMap<>();
+        for (Map<String, String> c : q.send("clientlist")) {
+            fresh.put(parse(c.get("clid"), -1), new TsClient(parse(c.get("cid"), 0), parse(c.get("client_type"), 0)));
+        }
+        clients.clear();
+        clients.putAll(fresh);
     }
 
     /** {@code parentChannel} ist eine Channel-ID oder der Name eines Channels auf oberster Ebene. */
@@ -249,12 +211,32 @@ public final class TeamspeakSide implements TS3Listener {
         if (id >= 0) return id;
         Integer found = findChannel(0, configured);
         if (found == null) throw new IOException("TeamSpeak-Channel \"" + configured + "\" gibt es nicht");
-        LOG.info("TeamSpeak-Eltern-Channel {} hat die ID {}", configured, found);
         return found;
     }
 
-    private Integer findChannel(String name) {
-        return findChannel(parentChannel, name);
+    private void resolveChannels(TsQuery q) {
+        for (Room room : rooms) {
+            if (roomChannels.containsKey(room.key())) continue;
+            int configured = room.config().teamspeakChannel();
+            if (configured > 0) {
+                roomChannels.put(room.key(), configured);
+                continue;
+            }
+            Integer found = findChannel(parentChannel, room.name());
+            if (found == null) {
+                try {
+                    found = parse(q.send("channelcreate", "channel_name", room.name(), "cpid", Integer.toString(parentChannel),
+                        "channel_flag_permanent", "1", "channel_codec", "4").getFirst().get("cid"), -1);
+                    channels.put(found, new TsChannel(parentChannel, room.name()));
+                    LOG.info("TeamSpeak-Channel angelegt: {} ({})", room.name(), found);
+                } catch (IOException e) {
+                    LOG.error("{}: TeamSpeak-Channel konnte nicht angelegt werden ({}). Fehlen dem Query-Login die "
+                        + "Rechte zum Anlegen? Bis dahin ohne TeamSpeak.", room.name(), e.getMessage());
+                    continue;
+                }
+            }
+            roomChannels.put(room.key(), found);
+        }
     }
 
     private Integer findChannel(int parent, String name) {
@@ -264,22 +246,28 @@ public final class TeamspeakSide implements TS3Listener {
         return null;
     }
 
-    private void disconnectObserver() {
-        ready = false;
-        LocalTeamspeakClientSocket socket = observer;
-        observer = null;
-        if (socket != null) {
-            socket.removeListener(this);
-            try {
-                socket.disconnect();
-            } catch (Exception ignored) {
-                // Verbindung ist ohnehin weg
+    /** Lesethread der Query: nur Karten aktualisieren, keine Befehle schicken. */
+    private void onNotification(TsQuery.Notification n) {
+        Map<String, String> f = n.fields();
+        int clid = parse(f.get("clid"), -1);
+        int cid = parse(f.get("cid"), -1);
+        switch (n.name()) {
+            case "notifycliententerview" -> clients.put(clid, new TsClient(parse(f.get("ctid"), 0), parse(f.get("client_type"), 0)));
+            case "notifyclientleftview" -> clients.remove(clid);
+            case "notifyclientmoved" -> clients.compute(clid, (id, old) ->
+                new TsClient(parse(f.get("ctid"), 0), old == null ? CLIENT_TYPE_VOICE : old.type()));
+            case "notifychannelcreated" -> channels.put(cid, new TsChannel(parse(f.get("cpid"), 0), f.getOrDefault("channel_name", "")));
+            case "notifychanneledited" -> {
+                String name = f.get("channel_name");
+                if (name != null) channels.computeIfPresent(cid, (id, old) -> new TsChannel(old.parent(), name));
             }
+            case "notifychannelmoved" -> channels.computeIfPresent(cid, (id, old) -> new TsChannel(parse(f.get("cpid"), 0), old.name()));
+            case "notifychanneldeleted" -> {
+                channels.remove(cid);
+                roomChannels.values().removeIf(c -> c == cid);
+            }
+            default -> {}
         }
-        for (TeamspeakRoomClient client : roomClients.values()) client.disconnect();
-        roomClients.clear();
-        clients.clear();
-        channels.clear();
     }
 
     LocalIdentity loadIdentity(String file) throws IOException, GeneralSecurityException {
@@ -306,73 +294,9 @@ public final class TeamspeakSide implements TS3Listener {
 
     public void stop() {
         executor.shutdownNow();
-        disconnectObserver();
-    }
-
-    // --- Ereignisse des Beobachters ---
-
-    @Override
-    public void onClientJoin(ClientJoinEvent e) {
-        clients.put(e.getClientId(), new TsClient(e.getClientTargetId(), e.getClientType()));
-    }
-
-    @Override
-    public void onClientMoved(ClientMovedEvent e) {
-        clients.compute(e.getClientId(), (id, old) ->
-            new TsClient(e.getTargetChannelId(), old == null ? CLIENT_TYPE_VOICE : old.type()));
-    }
-
-    @Override
-    public void onClientLeave(ClientLeaveEvent e) {
-        clients.remove(e.getClientId());
-    }
-
-    @Override
-    public void onChannelList(ChannelListEvent e) {
-        putChannel(e.getMap());
-    }
-
-    @Override
-    public void onChannelCreate(ChannelCreateEvent e) {
-        putChannel(e.getMap());
-    }
-
-    @Override
-    public void onChannelEdit(ChannelEditedEvent e) {
-        Map<String, String> map = e.getMap();
-        String name = map.get("channel_name");
-        int cid = parse(map.get("cid"), -1);
-        if (name != null && cid >= 0) channels.computeIfPresent(cid, (id, old) -> new TsChannel(old.parent(), name));
-    }
-
-    @Override
-    public void onChannelMoved(ChannelMovedEvent e) {
-        Map<String, String> map = e.getMap();
-        int cid = parse(map.get("cid"), -1);
-        int parent = parse(map.get("cpid"), 0);
-        channels.computeIfPresent(cid, (id, old) -> new TsChannel(parent, old.name()));
-    }
-
-    @Override
-    public void onChannelDeleted(ChannelDeletedEvent e) {
-        channels.remove(e.getChannelId());
-        roomChannels.values().removeIf(cid -> cid == e.getChannelId());
-    }
-
-    @Override
-    public void onDisconnected(DisconnectedEvent e) {
-        // Beim fehlgeschlagenen Verbinden plant connectObserver den Neuversuch selbst
-        if (!ready) return;
-        ready = false;
-        LOG.warn("TeamSpeak-Beobachter getrennt, neuer Versuch in {} s", RECONNECT_SECONDS);
-        executor.execute(this::disconnectObserver);
-        executor.schedule(this::connectObserver, RECONNECT_SECONDS, TimeUnit.SECONDS);
-    }
-
-    private void putChannel(Map<String, String> map) {
-        int cid = parse(map.get("cid"), -1);
-        if (cid < 0) return;
-        channels.put(cid, new TsChannel(parse(map.get("cpid"), 0), map.getOrDefault("channel_name", "")));
+        for (TeamspeakRoomClient client : roomClients.values()) client.disconnect();
+        roomClients.clear();
+        closeQuery();
     }
 
     private static int parse(String value, int def) {

bridge/src/main/java/eu/mhsl/voicebridge/bridge/teamspeak/TsQuery.java

@@ -0,0 +1,207 @@
+package eu.mhsl.voicebridge.bridge.teamspeak;
+
+import com.jcraft.jsch.ChannelShell;
+import com.jcraft.jsch.JSch;
+import com.jcraft.jsch.JSchException;
+import com.jcraft.jsch.Session;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.TimeUnit;
+import java.util.function.Consumer;
+
+/**
+ * ServerQuery über SSH (Port 10022). Query-Verbindungen belegen keinen Client-Slot.
+ * Antworten kommen als Datenzeilen und einer abschließenden {@code error id=…}-Zeile,
+ * Ereignisse (nach {@code servernotifyregister}) als {@code notify…}-Zeilen dazwischen.
+ */
+public final class TsQuery implements AutoCloseable {
+    public static final class QueryException extends IOException {
+        public final int id;
+
+        QueryException(int id, String message) {
+            super("Fehler " + id + ": " + message);
+            this.id = id;
+        }
+    }
+
+    /** Ein Ereignis: Name (z. B. {@code notifycliententerview}) und seine Felder. */
+    public record Notification(String name, Map<String, String> fields) {}
+
+    private final Session session;
+    private final ChannelShell channel;
+    private final OutputStream out;
+    private final BlockingQueue<Object> responses = new ArrayBlockingQueue<>(4);
+    private final Consumer<Notification> notifications;
+    private final Runnable onClose;
+    private final Thread reader;
+    private volatile boolean closed;
+    private long lastCommand;
+    /** Mindestabstand zwischen zwei Befehlen (die Query sperrt die IP bei zu vielen Befehlen). */
+    private static final long MIN_INTERVAL_MILLIS = 1000;
+
+    public TsQuery(String host, int port, String user, String password,
+                   Consumer<Notification> notifications, Runnable onClose) throws JSchException, IOException {
+        this.notifications = notifications;
+        this.onClose = onClose;
+        JSch jsch = new JSch();
+        session = jsch.getSession(user, host, port);
+        session.setPassword(password);
+        // TeamSpeak erzeugt seinen Host-Key selbst, es gibt nichts zum Abgleichen
+        session.setConfig("StrictHostKeyChecking", "no");
+        session.setServerAliveInterval(60_000);
+        session.connect(15_000);
+        channel = (ChannelShell) session.openChannel("shell");
+        channel.setPty(false);
+        BufferedReader in = new BufferedReader(new InputStreamReader(channel.getInputStream(), StandardCharsets.UTF_8));
+        out = channel.getOutputStream();
+        channel.connect(15_000);
+        reader = Thread.ofPlatform().daemon().name("ts-query").start(() -> readLoop(in));
+    }
+
+    private void readLoop(BufferedReader in) {
+        List<Map<String, String>> data = new ArrayList<>();
+        try {
+            String line;
+            while ((line = in.readLine()) != null) {
+                line = line.strip();
+                if (line.isEmpty() || line.equals("TS3") || line.startsWith("Welcome") || line.startsWith("Please type")) continue;
+                if (line.startsWith("notify")) {
+                    int space = line.indexOf(' ');
+                    String name = space < 0 ? line : line.substring(0, space);
+                    for (Map<String, String> entry : parse(space < 0 ? "" : line.substring(space + 1))) {
+                        notifications.accept(new Notification(name, entry));
+                    }
+                } else if (line.startsWith("error ")) {
+                    Map<String, String> error = parse(line.substring(6)).getFirst();
+                    int id = Integer.parseInt(error.getOrDefault("id", "-1"));
+                    responses.put(id == 0 ? List.copyOf(data) : new QueryException(id, error.getOrDefault("msg", "")));
+                    data.clear();
+                } else {
+                    data.addAll(parse(line));
+                }
+            }
+        } catch (IOException | InterruptedException e) {
+            // Verbindung beendet
+        } finally {
+            closed = true;
+            responses.offer(new IOException("Query-Verbindung getrennt"));
+            onClose.run();
+        }
+    }
+
+    /** Befehl schicken und auf die Antwort warten. Flags wie {@code -uid} gehören in {@code command}. */
+    @SuppressWarnings("unchecked")
+    public synchronized List<Map<String, String>> send(String command, String... keyValues) throws IOException {
+        if (closed) throw new IOException("Query-Verbindung getrennt");
+        StringBuilder line = new StringBuilder(command);
+        for (int i = 0; i + 1 < keyValues.length; i += 2) {
+            line.append(' ').append(keyValues[i]).append('=').append(escape(keyValues[i + 1]));
+        }
+        // Flood-Schutz der Query: lieber langsam als eine IP-Sperre
+        long wait = lastCommand + MIN_INTERVAL_MILLIS - System.currentTimeMillis();
+        if (wait > 0) {
+            try {
+                Thread.sleep(wait);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                throw new IOException("unterbrochen", e);
+            }
+        }
+        lastCommand = System.currentTimeMillis();
+        responses.clear();
+        out.write((line + "\n").getBytes(StandardCharsets.UTF_8));
+        out.flush();
+        Object response;
+        try {
+            response = responses.poll(10, TimeUnit.SECONDS);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new IOException("unterbrochen", e);
+        }
+        if (response == null) throw new IOException("Keine Antwort auf " + command);
+        if (response instanceof IOException e) throw e;
+        return (List<Map<String, String>>) response;
+    }
+
+    public boolean isOpen() {
+        return !closed;
+    }
+
+    @Override
+    public void close() {
+        closed = true;
+        try {
+            out.write("quit\n".getBytes(StandardCharsets.UTF_8));
+            out.flush();
+        } catch (IOException ignored) {
+            // Verbindung ist ohnehin weg
+        }
+        channel.disconnect();
+        session.disconnect();
+    }
+
+    static List<Map<String, String>> parse(String text) {
+        List<Map<String, String>> entries = new ArrayList<>();
+        for (String entry : text.split("\\|")) {
+            Map<String, String> map = new LinkedHashMap<>();
+            for (String token : entry.split(" ")) {
+                if (token.isEmpty()) continue;
+                int eq = token.indexOf('=');
+                if (eq < 0) map.put(token, "");
+                else map.put(token.substring(0, eq), unescape(token.substring(eq + 1)));
+            }
+            entries.add(map);
+        }
+        return entries;
+    }
+
+    static String escape(String value) {
+        StringBuilder sb = new StringBuilder(value.length());
+        for (char c : value.toCharArray()) {
+            switch (c) {
+                case '\\' -> sb.append("\\\\");
+                case '/' -> sb.append("\\/");
+                case ' ' -> sb.append("\\s");
+                case '|' -> sb.append("\\p");
+                case '\n' -> sb.append("\\n");
+                case '\r' -> sb.append("\\r");
+                case '\t' -> sb.append("\\t");
+                default -> sb.append(c);
+            }
+        }
+        return sb.toString();
+    }
+
+    static String unescape(String value) {
+        StringBuilder sb = new StringBuilder(value.length());
+        for (int i = 0; i < value.length(); i++) {
+            char c = value.charAt(i);
+            if (c != '\\' || i + 1 == value.length()) {
+                sb.append(c);
+                continue;
+            }
+            char next = value.charAt(++i);
+            switch (next) {
+                case 's' -> sb.append(' ');
+                case 'p' -> sb.append('|');
+                case '/' -> sb.append('/');
+                case 'n' -> sb.append('\n');
+                case 'r' -> sb.append('\r');
+                case 't' -> sb.append('\t');
+                case '\\' -> sb.append('\\');
+                default -> sb.append(next);
+            }
+        }
+        return sb.toString();
+    }
+}

bridge/src/test/java/eu/mhsl/voicebridge/bridge/teamspeak/TsQueryTest.java

@@ -0,0 +1,33 @@
+package eu.mhsl.voicebridge.bridge.teamspeak;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class TsQueryTest {
+
+    @Test
+    void escapeRoundTrip() {
+        String value = "Crosstalk 1 (MC/DC) | a\\b";
+        assertEquals("Crosstalk\\s1\\s(MC\\/DC)\\s\\p\\sa\\\\b", TsQuery.escape(value));
+        assertEquals(value, TsQuery.unescape(TsQuery.escape(value)));
+    }
+
+    @Test
+    void parsesListEntries() {
+        List<Map<String, String>> entries = TsQuery.parse(
+            "clid=5 cid=265 client_nickname=Crosstalk\\s1\\s(MC\\/DC) client_type=0|clid=7 cid=1 client_type=1");
+        assertEquals(2, entries.size());
+        assertEquals("Crosstalk 1 (MC/DC)", entries.get(0).get("client_nickname"));
+        assertEquals("265", entries.get(0).get("cid"));
+        assertEquals("1", entries.get(1).get("client_type"));
+    }
+
+    @Test
+    void parsesFlagsWithoutValue() {
+        assertEquals("", TsQuery.parse("cid=3 channel_flag_permanent").getFirst().get("channel_flag_permanent"));
+    }
+}