From dca7f1499fa08944c67def6a25c2b590d867476b Mon Sep 17 00:00:00 2001
From: John Smith <xfgryujk@126.com>
Date: Sun, 31 Jan 2021 13:11:20 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E4=BB=A3=E7=A0=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 blivedm.py | 59 +++++++++++++++++++++++-------------------------------
 1 file changed, 25 insertions(+), 34 deletions(-)

diff --git a/blivedm.py b/blivedm.py
index 8769a23..1446319 100644
--- a/blivedm.py
+++ b/blivedm.py
@@ -22,8 +22,8 @@ DEFAULT_DANMAKU_SERVER_LIST = [
 
 HEADER_STRUCT = struct.Struct('>I2H2I')
 HeaderTuple = namedtuple('HeaderTuple', ('pack_len', 'raw_header_size', 'ver', 'operation', 'seq_id'))
-WS_BODY_PROTOCOL_VERSION_NORMAL = 0
-WS_BODY_PROTOCOL_VERSION_INT = 1  # 用于心跳包
+WS_BODY_PROTOCOL_VERSION_INFLATE = 0
+WS_BODY_PROTOCOL_VERSION_NORMAL = 1
 WS_BODY_PROTOCOL_VERSION_DEFLATE = 2
 
 
@@ -374,6 +374,7 @@ class BLiveClient:
         # noinspection PyProtectedMember
         self._ssl = ssl if ssl else ssl_._create_unverified_context()
         self._websocket = None
+        self._heartbeat_timer_handle = None
 
     @property
     def is_running(self):
@@ -507,7 +508,8 @@ class BLiveClient:
             return False
         return True
 
-    def _make_packet(self, data, operation):
+    @staticmethod
+    def _make_packet(data, operation):
         body = json.dumps(data).encode('utf-8')
         header = HEADER_STRUCT.pack(
             HEADER_STRUCT.size + len(body),
@@ -539,7 +541,6 @@ class BLiveClient:
 
         retry_count = 0
         while True:
-            heartbeat_future = None
             try:
                 # 连接
                 host_server = self._host_server_list[retry_count % len(self._host_server_list)]
@@ -549,27 +550,24 @@ class BLiveClient:
                 ) as websocket:
                     self._websocket = websocket
                     await self._send_auth()
-                    heartbeat_future = asyncio.ensure_future(self._heartbeat_loop(), loop=self._loop)
-                    heartbeat_future.add_done_callback(
-                        lambda _future: logger.debug('room %d 心跳循环结束', self.room_id)
+                    self._heartbeat_timer_handle = self._loop.call_later(
+                        self._heartbeat_interval, self._on_send_heartbeat
                     )
 
                     # 处理消息
                     async for message in websocket:  # type: aiohttp.WSMessage
                         retry_count = 0
-                        if message.type == aiohttp.WSMsgType.BINARY:
-                            try:
-                                await self._handle_message(message.data)
-                            except BaseException as e:
-                                if type(e) in (
-                                    asyncio.CancelledError, aiohttp.ClientConnectionError,
-                                    asyncio.TimeoutError, ssl_.SSLError
-                                ):
-                                    raise
-                                logger.exception('room %d 处理消息时发生错误：', self.room_id)
-                        else:
+                        if message.type != aiohttp.WSMsgType.BINARY:
                             logger.warning('room %d 未知的websocket消息：type=%s %s', self.room_id,
                                            message.type, message.data)
+                            continue
+
+                        try:
+                            await self._handle_message(message.data)
+                        except asyncio.CancelledError:
+                            raise
+                        except Exception:
+                            logger.exception('room %d 处理消息时发生错误：', self.room_id)
 
             except asyncio.CancelledError:
                 break
@@ -581,13 +579,10 @@ class BLiveClient:
                 # 证书错误时无法重连
                 break
             finally:
-                if heartbeat_future is not None:
-                    heartbeat_future.cancel()
-                    try:
-                        await heartbeat_future
-                    except asyncio.CancelledError:
-                        break
                 self._websocket = None
+                if self._heartbeat_timer_handle is not None:
+                    self._heartbeat_timer_handle.cancel()
+                    self._heartbeat_timer_handle = None
 
             retry_count += 1
             logger.warning('room %d 掉线重连中%d', self.room_id, retry_count)
@@ -596,14 +591,10 @@ class BLiveClient:
             except asyncio.CancelledError:
                 break
 
-    async def _heartbeat_loop(self):
-        while True:
-            try:
-                await self._websocket.send_bytes(self._make_packet({}, Operation.HEARTBEAT))
-                await asyncio.sleep(self._heartbeat_interval)
-
-            except (asyncio.CancelledError, aiohttp.ClientConnectionError):
-                break
+    def _on_send_heartbeat(self):
+        coro = self._websocket.send_bytes(self._make_packet({}, Operation.HEARTBEAT))
+        asyncio.ensure_future(coro, loop=self._loop)
+        self._heartbeat_timer_handle = self._loop.call_later(self._heartbeat_interval, self._on_send_heartbeat)
 
     async def _handle_message(self, data):
         offset = 0
@@ -622,13 +613,13 @@ class BLiveClient:
             elif header.operation == Operation.SEND_MSG_REPLY:
                 body = data[offset + HEADER_STRUCT.size: offset + header.pack_len]
                 if header.ver == WS_BODY_PROTOCOL_VERSION_DEFLATE:
-                    body = zlib.decompress(body)
+                    body = await self._loop.run_in_executor(None, zlib.decompress, body)
                     await self._handle_message(body)
                 else:
                     try:
                         body = json.loads(body.decode('utf-8'))
                         await self._handle_command(body)
-                    except BaseException:
+                    except Exception:
                         logger.error('body: %s', body)
                         raise