Various fixes

- Fix pycodestyle
- Change session.close API
- Fix logging

electrumx/server/peers.py

@@ -43,7 +43,7 @@ class PeerSession(ClientSession):
     async def handle_request(self, request):
         # We subscribe so might be unlucky enough to get a notification...
         if (isinstance(request, Notification) and
-               request.method == 'blockchain.headers.subscribe'):
+                request.method == 'blockchain.headers.subscribe'):
             pass
         else:
             await handler_invocation(None, request)   # Raises

electrumx/server/session.py

@@ -248,12 +248,9 @@ class SessionManager(object):
                                  for session in stale_sessions)
                 self.logger.info(f'closing stale connections {text}')
                 # Give the sockets some time to close gracefully
-                async with ignore_after(20):
-                    async with TaskGroup() as group:
-                        for session in stale_sessions:
-                            group.spawn(session.close())
-                for session in stale_sessions:
-                    session.abort()
+                async with TaskGroup() as group:
+                    for session in stale_sessions:
+                        await group.spawn(session.close(force_after=30))
 
             # Consolidate small groups
             bw_limit = self.env.bandwidth_limit
@@ -340,9 +337,7 @@ class SessionManager(object):
         '''
         async def close(session):
             '''Close the session's transport.'''
-            async with ignore_after(2):
-                await session.close()
-            session.abort()
+            await session.close(force_after=2)
             return f'disconnected {session.session_id}'
 
         return await self._for_each_session(session_ids, close)
@@ -439,10 +434,9 @@ class SessionManager(object):
             # Close servers and sessions
             self.state = self.SHUTTING_DOWN
             await self._close_servers(list(self.servers.keys()))
-            for session in self.sessions:
-                session.abort()
-            for session in list(self.sessions):
-                await session.close()
+            with TaskGroup() as group:
+                for session in list(self.sessions):
+                    await group.spawn(await session.close(force_after=0.1))
 
     def session_count(self):
         '''The number of connections that we've sent something to.'''
@@ -507,7 +501,9 @@ class SessionBase(ServerSession):
         self.txs_sent = 0
         self.log_me = False
         self.bw_limit = self.env.bandwidth_limit
-        self._crm_original = self.connection.receive_message
+        # Hijack the connection so we can log messages
+        self._receive_message_orig = self.connection.receive_message
+        self.connection.receive_message = self.receive_message
 
     async def notify(self, height, touched):
         pass
@@ -520,15 +516,12 @@ class SessionBase(ServerSession):
         return super().peer_address_str()
 
     def receive_message(self, message):
-        self.logger.info(f'processing {message}')
-        self._crm_original(message)
+        if self.log_me:
+            self.logger.info(f'processing {message}')
+        return self._receive_message_orig(message)
 
     def toggle_logging(self):
         self.log_me = not self.log_me
-        if self.log_me:
-            self.connection.receive_message = self.receive_message
-        else:
-            self.connection.receive_message = self._crm_original
 
     def flags(self):
         '''Status flags.'''
@@ -634,6 +627,13 @@ class ElectrumX(SessionBase):
     def protocol_version_string(self):
         return util.version_string(self.protocol_tuple)
 
+    # FIXME: make this the aiorpcx API for version 0.7
+    async def close(self, force_after=30):
+        '''Close the connection and return when closed.'''
+        async with ignore_after(force_after):
+            super().close()
+        self.abort()
+
     async def daemon_request(self, method, *args):
         '''Catch a DaemonError and convert it to an RPCError.'''
         try: