使用 Web 套接字和 Gunicorn 运行 Flask 应用程序时出错

Question

当使用gunicorn在本地服务器上运行我的应用程序时，我收到以下错误日志：

[2019-06-10 20:12:20 +0200] [34160] [ERROR] Socket error processing request.
Traceback (most recent call last):
  File "/Users/user/Documents/project/venv/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 135, in handle
    self.handle_request(listener, req, client, addr)
  File "/Users/user/Documents/project/venv/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 191, in handle_request
    six.reraise(*sys.exc_info())
  File "/Users/user/Documents/project/venv/lib/python3.6/site-packages/gunicorn/six.py", line 625, in reraise
    raise value
  File "/Users/user/Documents/project/venv/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 183, in handle_request
    resp.close()
  File "/Users/user/Documents/project/venv/lib/python3.6/site-packages/gunicorn/http/wsgi.py", line 409, in close
    self.send_headers()
  File "/Users/user/Documents/project/venv/lib/python3.6/site-packages/gunicorn/http/wsgi.py", line 329, in send_headers
    util.write(self.sock, util.to_bytestring(header_str, "ascii"))
  File "/Users/user/Documents/project/venv/lib/python3.6/site-packages/gunicorn/util.py", line 304, in write
    sock.sendall(data)
OSError: [Errno 9] Bad file descriptor

我的gunicorn配置如下，我使用gunicorn -w 4 -b 0.0.0.0:8080 uwsgi:app config=config.ini执行它：

[server:main]
workers = 4
worker_class = 'eventlet'
bind = '0.0.0.0:8080'
reload = False
daemon = True
timeout = 1200
port = 8080

通过 Flask-SocketIO 连接 Web 套接字的代码：

app = Flask(__name__)
Session(app)
socketio = SocketIO(app)

我正在使用 Flask-SocketIO，现在我只是想让套接字框架在本地计算机上没有 Nginx 的情况下在 wsgi 服务器上工作。关于可能出现的问题有什么建议吗？无法从这些错误日志中将其拼凑起来 - 提前感谢您的任何建议！

Answer 1

我必须将工作人员指定为 eventlet，现在它正在使用 Gunicorn 在本地计算机上工作。我通过运行来做到这一点：

Gunicorn -w 1 -b 0.0.0.0:8080 app:app --worker-class eventlet --reload