fix: prevent Discord self-reply loops

astrbot/core/platform/sources/discord/client.py

@@ -98,6 +98,9 @@ def _create_interaction_data(self, interaction: discord.Interaction) -> dict:
 
     async def on_message(self, message: discord.Message) -> None:
         """当接收到消息时触发"""
+        if self.user is not None and message.author.id == self.user.id:
+            return
+
         if message.author.bot and not self.allow_bot_messages:
             return
 

tests/test_discord_adapter.py

@@ -12,6 +12,7 @@
     discord_platform_adapter,
     discord_platform_event,
 )
+from astrbot.core.platform.sources.discord.client import DiscordBotClient
 from astrbot.core.platform.sources.discord.discord_platform_adapter import (
     DiscordPlatformAdapter,
 )
@@ -26,6 +27,41 @@
 _WAV_PATH = "/tmp/discord_voice.wav"
 
 
+@pytest.mark.asyncio
+@pytest.mark.parametrize("allow_bot_messages", [False, True])
+@pytest.mark.parametrize(("author_id", "is_bot"), [(1, True), (2, True), (3, False)])
+async def test_discord_filters_self_messages(allow_bot_messages, author_id, is_bot):
+    """Reject self messages while preserving the other-bot setting.
+
+    Args:
+        allow_bot_messages: Whether messages from other bots are enabled.
+        author_id: The sender ID; 1 is the connected bot.
+        is_bot: Whether the sender is a bot.
+    """
+    client = DiscordBotClient(token="test", allow_bot_messages=allow_bot_messages)
+    client._connection.user = SimpleNamespace(id=1)
+    client.on_message_received = AsyncMock()
+    message = SimpleNamespace(
+        id=42,
+        author=SimpleNamespace(
+            id=author_id, bot=is_bot, name="tester", display_name="tester"
+        ),
+        content="hello",
+        clean_content="hello",
+        channel=SimpleNamespace(id=123),
+        guild=None,
+        mentions=[],
+    )
+
+    await client.on_message(message)
+
+    if author_id == 1 or (is_bot and not allow_bot_messages):
+        client.on_message_received.assert_not_awaited()
+    else:
+        client.on_message_received.assert_awaited_once()
+        assert client.on_message_received.call_args.args[0]["message"] is message
+
+
 @pytest.mark.asyncio
 @pytest.mark.parametrize("component_type", ["video", "video_url", "file"])
 @pytest.mark.parametrize("with_text", [False, True])