[androiddebugbridge] Retry a command once when standby rejects the shell stream

bundles/org.openhab.binding.androiddebugbridge/src/main/java/org/openhab/binding/androiddebugbridge/internal/AndroidDebugBridgeDevice.java

@@ -779,7 +779,7 @@ private String runAdbShell(int commandTimeout, String... args)
             String result = commandFuture.get(commandTimeout, TimeUnit.SECONDS);
             Exception error = streamError.get();
             if (error != null) {
-                throw new AndroidDebugBridgeDeviceException(
+                throw new AndroidDebugBridgeDeviceStreamRejectedException(
                         "Error opening adb shell stream " + ip + ":" + port + ": " + error.getMessage());
             }
             return result;

bundles/org.openhab.binding.androiddebugbridge/src/main/java/org/openhab/binding/androiddebugbridge/internal/AndroidDebugBridgeDeviceStreamRejectedException.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2010-2026 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.binding.androiddebugbridge.internal;
+
+import org.eclipse.jdt.annotation.NonNullByDefault;
+
+/**
+ * Thrown when the device refuses to open the adb shell stream, which a device in standby commonly
+ * does. It is a distinct type because the shell command provably never ran, so the caller may
+ * safely reconnect and retry it without risking a duplicate execution.
+ *
+ * @author Stamate Viorel - Initial contribution
+ */
+@NonNullByDefault
+public class AndroidDebugBridgeDeviceStreamRejectedException extends AndroidDebugBridgeDeviceException {
+    private static final long serialVersionUID = 5471982041566281957L;
+
+    public AndroidDebugBridgeDeviceStreamRejectedException(String message) {
+        super(message);
+    }
+}

bundles/org.openhab.binding.androiddebugbridge/src/main/java/org/openhab/binding/androiddebugbridge/internal/AndroidDebugBridgeHandler.java

@@ -97,7 +97,21 @@ public void handleCommand(ChannelUID channelUID, Command command) {
                 // try reconnect
                 adbConnection.connect();
             }
-            handleCommandInternal(channelUID, command);
+            try {
+                handleCommandInternal(channelUID, command);
+            } catch (AndroidDebugBridgeDeviceStreamRejectedException e) {
+                // Socket.isConnected() only records that a connection was once established; it stays
+                // true after the device stops serving the socket, so the check above cannot notice a
+                // device that went into standby and the shell stream open is refused instead. The
+                // command provably never ran, so reconnect and run it once more rather than dropping
+                // it -- otherwise the first command after standby (typically the KEYCODE_WAKEUP meant
+                // to end it) is always lost.
+                logger.debug("{} - shell stream rejected, reconnecting and retrying command: {}", currentConfig.ip,
+                        e.getMessage());
+                adbConnection.disconnect();
+                adbConnection.connect();
+                handleCommandInternal(channelUID, command);
+            }
         } catch (InterruptedException ignored) {
         } catch (AndroidDebugBridgeDeviceException | ExecutionException e) {
             if (!(e.getCause() instanceof InterruptedException)) {