使用 socket.io 成功发送和接收事件,但没有任何反应
Sending and receiving events successfully with socket.io, but nothing is happening
我正在尝试让我的网络应用程序发送消息,但我不明白为什么它不起作用。我看不到任何错误,只是我的 event.py 函数中的操作没有发生。我是 运行 一个 gunicorn 服务器,eventlet workers 服务于一个 flask 应用程序。
这里是通过docker启动gunicorn服务器的命令:
CMD [ "gunicorn", "--reload", "-b", "0.0.0.0:5000", "--worker-class", "eventlet", "-w", "1", "app:app"]
这里是notes.html上的相关代码:
// Imports socketio
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.js" integrity="sha512-q/dWJ3kcmjBLU4Qc47E4A9kTB4m3wuTY7vkFJDTZKjTs8jhyGQnaUrxa0Ytd0ssMZhbNua9hE+E7Qv1j+DyZwA==" crossorigin="anonymous"></script>
<script type="text/javascript" charset="utf-8">
// sets domain to talk to. (empty sets it to localhost)
const socket = io()
// send message to server on trigger from form.
socket.emit('send_new_session', new_session_form_id.value, new_session_form_number.value, new_session_form_title.value, new_session_form_synopsis.value)
console.log('send_new_session')
// console logs the message here, do I know it's getting this far. The problem seems to be that the server isn't getting the message for some reason.
events.py:
from . import db, socketio
from .classes import *
from flask_socketio import emit
@socketio.on('send_new_session')
def send_new_session(id, number, title, synopsis=None):
print("arrived!!!!!!!!!!!")
# more code that adds the new session the the database
..
我已将日志记录正确设置为标准输出,但我从未看到“已到达”消息,所以我知道它永远不会访问服务器。
这是我发送消息时的服务器日志:
rest-server | Bpt-ydbpGYLF-HGKAAAC: Sending packet OPEN data {'sid': 'Bpt-ydbpGYLF-HGKAAAC', 'upgrades': ['websocket'], 'pingTimeout': 20000, 'pingInterval': 25000}
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received packet MESSAGE data 0
rest-server | Bpt-ydbpGYLF-HGKAAAC: Sending packet MESSAGE data 0{"sid":"MRAxFiGYyLB3C6MBAAAD"}
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received request to upgrade to websocket
rest-server | Bpt-ydbpGYLF-HGKAAAC: Upgrade to websocket successful
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received packet MESSAGE data 2["send_new_session","1","2","foo","bar"]
rest-server | received event "send_new_session" from MRAxFiGYyLB3C6MBAAAD [/]
rest-server | Bpt-ydbpGYLF-HGKAAAC: Sending packet PING data None
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received packet PONG data
您可以在日志中看到消息实际上正在发送和接收,但由于某种原因事件中的操作没有发生。几天来,我一直在尝试我能想到的一切。任何帮助将不胜感激!!
下面的所有内容可能都不相关,但如果有帮助,这就是我设置应用程序的方式:
文件设置:
/app
--app.py
--requirements.txt
--Dockerfile
--docker-compose.yml
--.flaskenv
--/project
----/static
----/templates
----__init__.py
----settings.py
----events.py
----BONapp.py
----auth.py
etc...
settings.py
import os
from flask import Flask
app = Flask(__name__)
db_password = os.environ.get('DB_PASS')
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymysql://root:' + db_password + '@bonmysqldb:3306/BON'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.config['SECRET_KEY'] = db_password
init.py
from flask_login import LoginManager
from flask_migrate import Migrate
from flask_sqlalchemy import SQLAlchemy
from flask_socketio import SocketIO
from .settings import app
db = SQLAlchemy(app)
socketio = SocketIO(app, logger=True, engineio_logger=True)
def create_app():
migrate = Migrate(app, db)
from .classes import Users
db.init_app(app)
socketio.init_app(app)
login_manager = LoginManager()
login_manager.login_view = 'auth.login'
login_manager.init_app(app)
# provide login_manager with a unicode user ID
@login_manager.user_loader
def load_user(user_id):
return Users.query.get(int(user_id))
# blueprint for auth routes of app
from .auth import auth as auth_blueprint
app.register_blueprint(auth_blueprint)
# blueprint for non-auth parts of app
from .BONapp import main as main_blueprint
app.register_blueprint(main_blueprint)
return app
app.py
from project.__init__ import create_app
app = create_app()
我在再次阅读我的问题时想通了...
它在 events.py 我改变了:
from . import db, socketio
至:
from .__init__ import db, socketio
我不太确定为什么这很重要,但它已解决。
捂脸
我正在尝试让我的网络应用程序发送消息,但我不明白为什么它不起作用。我看不到任何错误,只是我的 event.py 函数中的操作没有发生。我是 运行 一个 gunicorn 服务器,eventlet workers 服务于一个 flask 应用程序。
这里是通过docker启动gunicorn服务器的命令:
CMD [ "gunicorn", "--reload", "-b", "0.0.0.0:5000", "--worker-class", "eventlet", "-w", "1", "app:app"]
这里是notes.html上的相关代码:
// Imports socketio
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.js" integrity="sha512-q/dWJ3kcmjBLU4Qc47E4A9kTB4m3wuTY7vkFJDTZKjTs8jhyGQnaUrxa0Ytd0ssMZhbNua9hE+E7Qv1j+DyZwA==" crossorigin="anonymous"></script>
<script type="text/javascript" charset="utf-8">
// sets domain to talk to. (empty sets it to localhost)
const socket = io()
// send message to server on trigger from form.
socket.emit('send_new_session', new_session_form_id.value, new_session_form_number.value, new_session_form_title.value, new_session_form_synopsis.value)
console.log('send_new_session')
// console logs the message here, do I know it's getting this far. The problem seems to be that the server isn't getting the message for some reason.
events.py:
from . import db, socketio
from .classes import *
from flask_socketio import emit
@socketio.on('send_new_session')
def send_new_session(id, number, title, synopsis=None):
print("arrived!!!!!!!!!!!")
# more code that adds the new session the the database
..
我已将日志记录正确设置为标准输出,但我从未看到“已到达”消息,所以我知道它永远不会访问服务器。
这是我发送消息时的服务器日志:
rest-server | Bpt-ydbpGYLF-HGKAAAC: Sending packet OPEN data {'sid': 'Bpt-ydbpGYLF-HGKAAAC', 'upgrades': ['websocket'], 'pingTimeout': 20000, 'pingInterval': 25000}
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received packet MESSAGE data 0
rest-server | Bpt-ydbpGYLF-HGKAAAC: Sending packet MESSAGE data 0{"sid":"MRAxFiGYyLB3C6MBAAAD"}
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received request to upgrade to websocket
rest-server | Bpt-ydbpGYLF-HGKAAAC: Upgrade to websocket successful
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received packet MESSAGE data 2["send_new_session","1","2","foo","bar"]
rest-server | received event "send_new_session" from MRAxFiGYyLB3C6MBAAAD [/]
rest-server | Bpt-ydbpGYLF-HGKAAAC: Sending packet PING data None
rest-server | Bpt-ydbpGYLF-HGKAAAC: Received packet PONG data
您可以在日志中看到消息实际上正在发送和接收,但由于某种原因事件中的操作没有发生。几天来,我一直在尝试我能想到的一切。任何帮助将不胜感激!!
下面的所有内容可能都不相关,但如果有帮助,这就是我设置应用程序的方式:
文件设置:
/app
--app.py
--requirements.txt
--Dockerfile
--docker-compose.yml
--.flaskenv
--/project
----/static
----/templates
----__init__.py
----settings.py
----events.py
----BONapp.py
----auth.py
etc...
settings.py
import os
from flask import Flask
app = Flask(__name__)
db_password = os.environ.get('DB_PASS')
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymysql://root:' + db_password + '@bonmysqldb:3306/BON'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.config['SECRET_KEY'] = db_password
init.py
from flask_login import LoginManager
from flask_migrate import Migrate
from flask_sqlalchemy import SQLAlchemy
from flask_socketio import SocketIO
from .settings import app
db = SQLAlchemy(app)
socketio = SocketIO(app, logger=True, engineio_logger=True)
def create_app():
migrate = Migrate(app, db)
from .classes import Users
db.init_app(app)
socketio.init_app(app)
login_manager = LoginManager()
login_manager.login_view = 'auth.login'
login_manager.init_app(app)
# provide login_manager with a unicode user ID
@login_manager.user_loader
def load_user(user_id):
return Users.query.get(int(user_id))
# blueprint for auth routes of app
from .auth import auth as auth_blueprint
app.register_blueprint(auth_blueprint)
# blueprint for non-auth parts of app
from .BONapp import main as main_blueprint
app.register_blueprint(main_blueprint)
return app
app.py
from project.__init__ import create_app
app = create_app()
我在再次阅读我的问题时想通了...
它在 events.py 我改变了:
from . import db, socketio
至:
from .__init__ import db, socketio
我不太确定为什么这很重要,但它已解决。 捂脸