1 python django node.js socket.io
我一直在尝试将 socketio 与 Django 集成，但出现以下错误。
[31/Mar/2020 14:50:27] "GET /socket.io/?EIO=3&transport=polling&t=N4n4ds4&b64=1 HTTP/1.1" 200 117
[31/Mar/2020 14:50:27] "POST /socket.io/?EIO=3&transport=polling&t=N4n4dsj&b64=1&sid=9053be92266c46148304c09833b2ebe8 HTTP/1.1" 200 2
Traceback (most recent call last):
File "/usr/local/opt/python/Frameworks/Python.framework/Versions/3.7/lib/python3.7/wsgiref/handlers.py", line 137, in run
self.result = application(self.environ, self.start_response)
File "/Users/murali/yourenv/lib/python3.7/site-packages/django/contrib/staticfiles/handlers.py", line 68, in __call__
return self.application(environ, start_response)
File "/Users/murali/yourenv/lib/python3.7/site-packages/engineio/middleware.py", line 60, in __call__
return self.engineio_app.handle_request(environ, start_response)
File "/Users/murali/yourenv/lib/python3.7/site-packages/socketio/server.py", line 558, in handle_request
return self.eio.handle_request(environ, start_response)
File "/Users/murali/yourenv/lib/python3.7/site-packages/engineio/server.py", line 377, in handle_request
environ, start_response)
File "/Users/murali/yourenv/lib/python3.7/site-packages/engineio/socket.py", line 108, in handle_get_request
start_response)
File "/Users/murali/yourenv/lib/python3.7/site-packages/engineio/socket.py", line 152, in _upgrade_websocket
return ws(environ, start_response)
File "/Users/murali/yourenv/lib/python3.7/site-packages/engineio/async_drivers/eventlet.py", line 16, in __call__
raise RuntimeError('You need to use the eventlet server. '
RuntimeError: You need to use the eventlet server. See the Deployment section of the documentation for more information.
[31/Mar/2020 14:50:27] "GET /socket.io/?EIO=3&transport=websocket&sid=9053be92266c46148304c09833b2ebe8 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 52220)
Traceback (most recent call last):
File "/usr/local/opt/python/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 650, in process_request_thread
self.finish_request(request, client_address)
File "/usr/local/opt/python/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 360, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/local/opt/python/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socketserver.py", line 720, in __init__
self.handle()
File "/Users/murali/yourenv/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 174, in handle
self.handle_one_request()
File "/Users/murali/yourenv/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 182, in handle_one_request
self.raw_requestline = self.rfile.readline(65537)
File "/usr/local/opt/python/Frameworks/Python.framework/Versions/3.7/lib/python3.7/socket.py", line 589, in readinto
return self._sock.recv_into(b)
ConnectionResetError: [Errno 54] Connection reset by peer
----------------------------------------
我指的链接https://www.botreetechnologies.com/blog/django-websocket-with-socketio
下面是我的代码：
要求.txt：
enum-compat==0.0.2
eventlet==0.25.1
python-engineio
python-socketio
pytz==2018.7
six==1.10.0
settings.py：在INSTALLED_APPS中添加了socketio：
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'socketio'
]
wsgi.py:
import os
import eventlet
import socketio
from django.core.wsgi import get_wsgi_application
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'integrate_socketio.settings')
application = get_wsgi_application()
sio = socketio.Server()
application = socketio.WSGIApp(sio, application)
urls.py
from django.contrib import admin
from django.urls import path
from . import views
urlpatterns = [
#path('admin/', admin.site.urls),
path('', views.hello, name='hello')
]
视图.py
import eventlet
async_mode = eventlet
import os
from django.http import HttpResponse
import socketio
basedir = os.path.dirname(os.path.realpath(__file__))
sio = socketio.Server(async_mode='eventlet')\
@sio.on('connection-bind')
def connection_bind(sid, data):
print("sid:",sid,"data",data)
@sio.on('message')
def message(data):
print(data)
sio.emit('test',data)
@sio.on('disconnect')
def test_disconnect(sid):
print("Disconnected")
def hello(data):
return HttpResponse("Hello")
下面是用nodejs编写的客户端代码，
var io = require('socket.io-client');
var socket = io.connect('http://localhost:8000', {reconnect: false});
socket.on('connect', function (socket) {
console.log('Connected!');
});
socket.emit('message', 'messgae', 'test msg');
socket.on('test', function (data) {
console.log(data);
})
跑步：
python manage.py runserver
当我在浏览器中打开http://localhost:8000/时得到响应，但当我运行 nodejs 客户端时出现上述错误。
任何帮助，将不胜感激 ：）
提前致谢...！
问题是实例async_mode的参数socketio.Server（sio）。该参数基本上选择运行时使用什么模型。每种模型类型都需要以某种方式运行。默认为async_mode，'eventlet'这意味着 SocketIO 服务器需要使用 eventlet 来运行。就您而言，它似乎默认为'eventlet'，但您没有使用 eventlet 运行 django 服务器，这会引发错误。要解决此问题，您可以更改sio参数以与您的方式兼容（解决方案 1），也可以配置 wsgi.py 以使用 eventlet 运行服务器（解决方案 2）。
您可以sio按如下方式更改初始化参数：
sio = socketio.Server(async_mode='mode') # Change 'mode' to your mode
您可以'mode'根据服务器的运行方式进行更改。选项是'gevent_uwsgi'、'gevent'、 或'threading'（或'eventlet'、None，但都不能解决您的问题）。
从你的运行语句来看，你没有使用gunicorn或uwsgi，所以在你的情况下，最好使用threading或gevent。（使用gunicorn或uwsgi的说明'gevent'分别'gevent_uwsgi'在底部引用的官方文档中）
如果您使用'threading'，则不需要在 wsgi.py 中安装任何内容或更改任何内容（模式除外），但它的性能相对较慢。
如果您使用的是'gevent'，则需要安装 gevent，如下所示：
$ pip install gevent
然后，您需要更改 wsgi.py 中的一些设置。如果您安装了 gevent websocket 传输，请将以下内容添加到 wsgi.py 的底部：
from gevent import pywsgi
from geventwebsocket.handler import WebSocketHandler
pywsgi.WSGIServer(('', 8000), app,
handler_class=WebSocketHandler).serve_forever()
如果没有，则添加以下内容：
from gevent import pywsgi
pywsgi.WSGIServer(('', 8000), app).serve_forever()
如果您决定将 wsgi.py 配置为与 eventlet 一起运行，则首先安装 eventlet...
$ pip install eventlet
...并将以下内容添加到 wsgi.py 的底部：
import eventlet
import eventlet.wsgi
eventlet.wsgi.server(eventlet.listen(('', 8000)), application)
我从这个网站和官方 socket.io 文档中获取了所有信息。官方文档还提供了使用“解决方案 1”中其他模式的说明