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Djangoチャンネルを使用するDjangoでアプリケーションを構築しようとしています。私はElastic Beanstalkに展開しています。私の理解では、アプリケーションロードバランサはWebソケットをサポートしており、websocketトラフィックを適切なポートにルーティングできます。 WebSocketは私のlocalhost：8000で動作します。私は自分のチャンネル層にフリーティアのRedis Labsを使っています。EC2でDjangoチャンネルを使用したWebsocketエラー
私はこのチュートリアルに従いました。 https://blog.mangoforbreakfast.com/2017/02/13/django-channels-on-aws-elastic-beanstalk-using-an-alb/#comment-43
このチュートリアルでは、Daphneと作業者が正しいポートで動作しているようです。私は次の出力を得るためにEC2インスタンスにSSHしました。
$ sudo /usr/local/bin/supervisorctl -c /opt/python/etc/supervisord.conf status
Daphne RUNNING pid 4240, uptime 0:05:51
Worker:Worker_00 RUNNING pid 4242, uptime 0:05:51
Worker:Worker_01 RUNNING pid 4243, uptime 0:05:51
Worker:Worker_02 RUNNING pid 4244, uptime 0:05:51
Worker:Worker_03 RUNNING pid 4245, uptime 0:05:51
httpd RUNNING pid 4248, uptime 0:05:51
私のdaphne.out.logとworkers.out.logはうまく見えます。
$ cat daphne.out.log
2017-07-20 21:41:43,693 INFO Starting server at tcp:port=5000:interface=0.0.0.0, channel layer mysite.asgi:channel_layer.
2017-07-20 21:41:43,693 INFO HTTP/2 support not enabled (install the http2 and tls Twisted extras)
2017-07-20 21:41:43,694 INFO Using busy-loop synchronous mode on channel layer
2017-07-20 21:41:43,694 INFO Listening on endpoint tcp:port=5000:interface=0.0.0.0
$ cat workers.out.log
2017-07-20 21:41:44,114 - INFO - runworker - Using single-threaded worker.
2017-07-20 21:41:44,120 - INFO - runworker - Using single-threaded worker.
2017-07-20 21:41:44,121 - INFO - runworker - Running worker against channel layer default (asgi_redis.core.RedisChannelLayer)
2017-07-20 21:41:44,121 - INFO - worker - Listening on channels http.request, websocket.connect, websocket.disconnect, websocket.receive
2017-07-20 21:41:44,126 - INFO - runworker - Using single-threaded worker.
2017-07-20 21:41:44,126 - INFO - runworker - Running worker against channel layer default (asgi_redis.core.RedisChannelLayer)
2017-07-20 21:41:44,126 - INFO - runworker - Running worker against channel layer default (asgi_redis.core.RedisChannelLayer)
2017-07-20 21:41:44,127 - INFO - worker - Listening on channels http.request, websocket.connect, websocket.disconnect, websocket.receive
2017-07-20 21:41:44,127 - INFO - worker - Listening on channels http.request, websocket.connect, websocket.disconnect, websocket.receive
2017-07-20 21:41:44,133 - INFO - runworker - Using single-threaded worker.
2017-07-20 21:41:44,136 - INFO - runworker - Running worker against channel layer default (asgi_redis.core.RedisChannelLayer)
2017-07-20 21:41:44,136 - INFO - worker - Listening on channels http.request, websocket.connect, websocket.disconnect, websocket.receive
ここから私は、セキュリティグループの設定を更新し、ロードバランサを設定し、自分のWebページをテストしました。再ルーティングのためのパスとして/ ws /の代わりに、/ table/*を使用しました。これはWebソケットが必要なページであるためです。
私が/ ws /を使用すると、このエラーが発生します。
'WS：//example.com/table/1/' へのWebSocket接続に失敗しました：のWebSocketハンドシェイク中にエラーが発生しました：予期しない応答コード：404
私は/テーブルを使用する場合は/ * Iが得ますこのエラー。
'WS：//example.com/table/1/' へのWebSocket接続に失敗しました：のWebSocketハンドシェイク中にエラーが発生しました：予期しない応答コード：504
を、私は私のセキュリティグループの設定を変更した場合ポート5000でTCPを許可するようにロードバランサを設定すると、ワーカーログが変更されます。私のロードバランサで/ WS /パスの規則では、私は今、労働者のログにこれを取得する：
...
2017-07-20 21:41:44,136 - INFO - worker - Listening on channels http.request, websocket.connect, websocket.disconnect, websocket.receive
Not Found: /ws/
Not Found: /ws/
Not Found: /ws/
Not Found: /ws/
Not Found: /ws/
Not Found: /ws/
私は/テーブル/ *パスを使用している場合は、私は私のログに非常に長いエラーが発生します。私はWebSocketをを使用しようとすると
2017-07-21 01:22:05,270 - ERROR - worker - Error processing message with consumer deal.consumers.ws_connect:
Traceback (most recent call last):
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/contrib/sessions/backends/base.py", line 193, in _get_session
return self._session_cache
AttributeError: 'SessionStore' object has no attribute '_session_cache'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection
self.connect()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/base/base.py", line 171, in connect
self.connection = self.get_new_connection(conn_params)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/postgresql/base.py", line 175, in get_new_connection
connection = Database.connect(**conn_params)
File "/opt/python/run/venv/local/lib64/python3.4/site-packages/psycopg2/__init__.py", line 130, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/opt/python/run/venv/local/lib/python3.4/site-packages/channels/worker.py", line 119, in run
consumer(message, **kwargs)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/channels/sessions.py", line 220, in inner
result = func(message, *args, **kwargs)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/channels/auth.py", line 71, in inner
message.user = auth.get_user(fake_request)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/contrib/auth/__init__.py", line 167, in get_user
user_id = _get_user_session_key(request)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/contrib/auth/__init__.py", line 59, in _get_user_session_key
return get_user_model()._meta.pk.to_python(request.session[SESSION_KEY])
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/contrib/sessions/backends/base.py", line 48, in __getitem__
return self._session[key]
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/contrib/sessions/backends/base.py", line 198, in _get_session
self._session_cache = self.load()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/contrib/sessions/backends/db.py", line 33, in load
expire_date__gt=timezone.now()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/models/manager.py", line 122, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/models/query.py", line 381, in get
num = len(clone)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/models/query.py", line 240, in __len__
self._fetch_all()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/models/query.py", line 1074, in _fetch_all
self._result_cache = list(self.iterator())
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/models/query.py", line 52, in __iter__
results = compiler.execute_sql()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/models/sql/compiler.py", line 846, in execute_sql
cursor = self.connection.cursor()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/base/base.py", line 231, in cursor
cursor = self.make_debug_cursor(self._cursor())
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/base/base.py", line 204, in _cursor
self.ensure_connection()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection
self.connect()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/utils.py", line 95, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection
self.connect()
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/base/base.py", line 171, in connect
self.connection = self.get_new_connection(conn_params)
File "/opt/python/run/venv/local/lib/python3.4/site-packages/django/db/backends/postgresql/base.py", line 175, in get_new_connection
connection = Database.connect(**conn_params)
File "/opt/python/run/venv/local/lib64/python3.4/site-packages/psycopg2/__init__.py", line 130, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?
は、当然のことながら、私はこのエラーを取得する：
のWebSocketはCLOSINGまたはCLOSED状態に既にあります。
私は間違っていると思いますか？